A CCS integrated busbar welding device and method

Abstract

The present application relates to lithium battery processing technical field, specifically is CCS integrated busbar welding device and method, be applied to the sampling nickel piece on the flexible circuit board installed in the blister support is welded to the busbar surface supported by the blister support, including welding rack, welding execution unit, the welding rack includes basic installation platform and composite clamping mechanism, through setting up composite clamping mechanism with composite clamping function, actively exerting the composite force of third direction compression and first direction tension to sampling nickel piece before welding, realizes the zero gap close contact and accurate positioning of welding interface, thereby effectively avoids the problems such as false welding, uneven penetration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery processing, in particular to a CCS integrated busbar welding device and method. BACKGROUND

[0002] In a new energy automobile and energy storage battery system, a CCS (Cell Contact System) integrated busbar is a key component of a battery management system, responsible for the collection of battery cell electrical energy and the transmission of voltage and temperature signals. The assembly is mainly composed of a flexible circuit board (FPC / FFC), an insulating structural member, and a copper-aluminum busbar (busbar). Among them, the welding between the sampling nickel sheet and the busbar is the core manufacturing process that determines the electrical connection reliability of the CCS.

[0003] Currently commonly used laser welding, resistance welding and other processes still face significant challenges in implementation: due to the small size and thin thickness of the sampling nickel sheet, and the welding of dissimilar materials with the busbar, the fit of the welding interface is extremely high. If there is a microscopic gap or poor fit between the two, it is easy to cause defects such as virtual welding and insufficient penetration, directly affecting product yield and long-term operation stability.

[0004] Existing welding fixtures mostly use simple vertical pressing, which is difficult to actively eliminate the assembly gap between the nickel sheet and the busbar before welding, and also cannot compensate for the microscopic position changes caused by part tolerances or thermal deformation. This results in welding quality being greatly affected by process fluctuations, making it difficult to meet the stringent requirements for consistency, efficiency and reliability in large-scale production of power batteries.

[0005] Therefore, it is urgent to develop a special welding device that can achieve precise positioning before welding, actively eliminate gaps and maintain stable pre-tightening, in order to improve the welding quality and manufacturing reliability of the CCS integrated busbar. SUMMARY

[0006] In view of the problems existing in the prior art, a CCS integrated busbar welding device and method are provided, which actively applies a combined force of third direction pressing and first direction tensioning to the sampling nickel sheet before welding by setting a combined clamping mechanism with combined clamping function, achieving zero-gap tight fit and precise positioning of the welding interface, thereby effectively avoiding problems such as virtual welding and uneven penetration.

[0007] In order to solve the prior art problems, the present application provides a CCS integrated busbar welding device, which is applied to weld a sampling nickel sheet on a flexible circuit board installed in a blister support to the surface of a busbar carried by the blister support, and comprises a welding rack and a welding execution unit arranged on the top of the welding rack and capable of composite motion in a first direction, a second direction and a third direction, wherein the welding rack comprises: a basic installation platform, the surface of which is provided with a cavity structure for positioning and fixing the blister support; a composite clamping mechanism, which has a driving assembly with elastic reset function and a rigid pressing head, the driving assembly has a reset input end arranged at the top end of the basic installation platform and needing to overcome elastic restoring force when being displaced in the first direction, and an execution output end capable of being elastically pressed against the upper surface of the sampling nickel sheet in the third direction, and the rigid pressing head is fixedly installed on the execution output end of the driving assembly in the third direction; wherein, while driving the reset input end to be displaced in the first direction, the rigid pressing head is thirdly pressed against the top of the sampling nickel sheet, so that the sampling nickel sheet is subjected to the traction force generated by the reset action force of the reset input end in the first direction and tightly adheres to the preset welding area of the busbar.

[0008] Preferably, a pair of tracks parallel to each other are arranged on the basic installation platform and located on both sides of the cavity structure, and a lockable sliding block is arranged on the tracks; the reset input end of the driving assembly is connected with the sliding block, and the reset input end can be displaced in the second direction along the tracks and locked and fixed at a target position with the sliding block.

[0009] Preferably, a guide groove extending in the width direction of the basic installation platform is arranged on the basic installation platform; the tracks are slidingly arranged in the guide groove and perpendicular to the extension direction of the guide groove; an adjusting bolt is arranged in the guide groove and threadedly connected with the tracks, and the bolt head abuts against the bottom end of the basic installation platform, for adjusting and locking the first direction position of the tracks in the guide groove.

[0010] Preferably, the execution output end of the driving assembly is provided with a threaded hole extending in the third direction; the top end of the rigid pressing head is integrally formed with a threaded adjusting column; the threaded adjusting column is threadedly connected with the threaded hole, for adjusting the third direction pressing position of the rigid pressing head.

[0011] Preferably, the driving assembly of the composite clamping mechanism comprises a reset base, an elastic connecting arm and a reset tension spring; the reset base is fixedly arranged on the slider to form the reset input end, and a connecting column that needs to overcome elastic resistance when moving in a first direction and a second direction is vertically arranged at the center of the reset base; one end of the elastic connecting arm is rotationally connected with the connecting column, and the other end is connected with the rigid pressing head to form the execution output end; the reset tension spring is arranged in the elastic connecting arm, and both ends thereof are connected between the connecting column and the elastic connecting arm, for providing elastic force for resetting the elastic connecting arm.

[0012] Preferably, the reset base is internally provided with a mounting cavity; a mounting port with a diameter larger than that of the connecting column is formed at the top end of the mounting cavity; the bottom end of the connecting column is provided with a sliding disc that is slidingly arranged at the bottom of the mounting cavity; the top of the mounting cavity is provided with a pressure ring, the top end of the sliding disc is in contact with the pressure ring through the matching tapered surfaces, and an elastic element is arranged between the pressure ring and the top end of the mounting cavity.

[0013] Preferably, an external threaded cylinder is arranged in the mounting port and is threadedly connected with the mounting port, the bottom end of the external threaded cylinder is integrally provided with an adjusting ring, and the elastic element is arranged between the adjusting ring and the pressure ring.

[0014] Preferably, the bottom end of the reset base is provided with a guide strip that is radially slidingly connected with the slider, the outer side of the reset base is provided with a connecting lug, the connecting lug is provided with a connecting groove that is parallel to the guide strip, the slider is provided with a bolt that is threadedly connected with the slider, the bottom end of the bolt penetrates through the slider and abuts against the track, and the shank head of the bolt abuts against the top end of the connecting groove.

[0015] Preferably, the elastic connecting arm comprises a connecting plate, an upper arm and a lower arm, the upper arm and the lower arm are arranged in parallel between the connecting plate and the connecting column, both ends of the upper arm and the lower arm are rotationally connected with the connecting column and the connecting plate, and both ends of the reset tension spring are connected with the central position of the upper arm and the connecting column, respectively.

[0016] A CCS integrated busbar welding method adopts a CCS integrated busbar welding device, and comprises the following steps:

[0017] Step one, position and install the blister support installed with the flexible circuit board and the sampling nickel sheet in the cavity structure of the basic installation platform, so that the sampling nickel sheet corresponds to the preset welding area of the busbar;

[0018] Step two, drive the reset input end of the composite clamping mechanism to move in the first direction, while making the rigid pressing head press in the third direction on the top of the sampling nickel sheet, so that the sampling nickel sheet is continuously pulled in the first direction and closely attached to the preset welding area of the busbar;

[0019] Step three, in the state that the sampling nickel sheet is continuously pulled and closely attached to the busbar, control the welding execution unit to move to the welding position and perform welding on the contact interface between the sampling nickel sheet and the busbar;

[0020] Step four, after the welding is completed, the pressing of the rigid pressing head on the sampling nickel sheet is released, and the reset input end is driven to reset, so as to remove the CCS integrated busbar assembly which has completed the welding.

[0021] The beneficial effects of the present application compared with the prior art are:

[0022] The present application effectively eliminates the assembly gap between the sampling nickel sheet and the busbar by simultaneously applying the combined force of the third direction pressing and the first direction tension on the sampling nickel sheet before welding, ensuring the close attachment and stable positioning of the welding interface, thereby significantly improving the stability and consistency of the welding quality; the composite clamping method can adaptively compensate for the position changes caused by factors such as part tolerance and thermal deformation, reducing the influence of process fluctuations on the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a perspective view of a CCS integrated busbar welding device of the present application in a first kind of view.

[0024] Figure 2 is Figure 1 is a partial enlarged view of A in

[0025] Figure 3 is a top view of a CCS integrated busbar welding device of the present application.

[0026] Figure 4 is a perspective view of a CCS integrated busbar welding device of the present application in a second kind of view.

[0027] Figure 5 is Figure 4 is a partial enlarged view of B in

[0028] Figure 6 is a perspective view of a composite clamping mechanism in a CCS integrated busbar welding device of the present application in a first kind of view.

[0029] Figure 7 is a perspective view of a composite clamping mechanism in a CCS integrated busbar welding device of the present application in a second kind of view.

[0030] Figure 8 is a schematic diagram of a composite clamping mechanism in a CCS integrated busbar welding device of the present application when only vertical force is applied.

[0031] Figure 9 is a schematic diagram of a composite clamping mechanism in a CCS integrated busbar welding device of the present application when vertical and horizontal forces are applied.

[0032] Figure 10 is a partial exploded view of a composite clamping mechanism in a CCS integrated busbar welding device of the present application.

[0033] Figure 11 is an exploded view of a reset base in a CCS integrated busbar welding device of the present application.

[0034] Figure 12 is a schematic diagram of a foundation mounting platform and a blister support in a CCS integrated busbar welding device of the present application.

[0035] In the figure, the reference numerals are: 11, blister support; 12, flexible circuit board; 13, sampling nickel sheet; 14, busbar; 21, foundation mounting platform; 211, guide groove; 221, drive assembly; 2211, reset input end; 2212, execution output end; 222, rigid pressing head; 2221, threaded adjusting column; 223, reset base; 2231, guide bar; 2232, connecting lug; 2233, bolt; 224, connecting column; 2241, sliding disc; 2251, connecting plate; 2252, upper arm; 2253, lower arm; 226, reset tension spring; 227, pressure ring; 228, elastic element; 229, externally threaded cylinder; 2291, adjusting ring; 23, track; 231, sliding block; 24, adjusting peg. DETAILED DESCRIPTION

[0036] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application is described in further detail below in conjunction with the drawings and specific embodiments.

[0037] As Figure 1 , Figure 2 , Figure 3 and Figure 12As shown, a CCS integrated busbar welding device is applied to weld the sampling nickel sheet 13 on the flexible circuit board 12 installed in the blister support 11 to the surface of the busbar 14 carried by the blister support 11, comprising a welding rack and a welding execution unit arranged on the top of the welding rack and capable of composite motion in the first direction, the second direction and the third direction. The welding rack comprises: a basic mounting platform 21, the surface of which is provided with a cavity structure for positioning and fixing the blister support 11; a composite clamping mechanism arranged on the top end of the basic mounting platform 21 in the same number as the sampling nickel sheet 13, which has a driving assembly 221 with elastic reset function and a rigid pressing head 222, the driving assembly 221 has a reset input end 2211 arranged on the top end of the basic mounting platform 21 and needs to overcome the elastic restoring force when displaced in the first direction, and an execution output end 2212 capable of being elastically pressed against the upper surface of the sampling nickel sheet 13 in the third direction, and the rigid pressing head 222 is fixedly installed on the execution output end 2212 of the driving assembly 221 in the third direction; wherein, while driving the reset input end 2211 to displace in the first direction, the rigid pressing head 222 is thirdly connected to the top of the sampling nickel sheet 13, so that the sampling nickel sheet 13 generates a traction force under the reset action of the reset input end 2211 and is tightly attached to the preset welding area of the busbar 14.

[0038] As shown in Figure 8 and Figure 9 When the rigid pressing head 222 abuts against the sampling nickel sheet 13 and needs to apply traction in the length direction of the sampling nickel sheet 13, the connecting column 224 is moved towards the sampling nickel sheet 13. During the movement of the connecting column 224, the elastic resistance applied by the pressure ring 227 needs to be continuously overcome; the pressure ring 227 always has a motion trend of guiding the connecting column 224 to keep coaxial with the center axis of the mounting cavity under the pre-tightening action of the elastic element 228, and then drives the rigid pressing head 222 to implement smooth and controllable tension traction on the sampling nickel sheet 13 along the length direction of the sampling nickel sheet 13 through the elastic connecting arm. As shown in Figure 8 The mounting port is provided with an external thread cylinder 229 threadedly connected thereto, and the bottom end of the external thread cylinder 229 is provided with an integrally formed adjusting ring 2291, and the elastic element 228 is arranged between the adjusting ring 2291 and the pressure ring 227.

[0039] The device comprises a welding rack and a welding execution unit arranged on the top of the welding rack and capable of composite motion in the first direction, the second direction and the third direction. The welding rack comprises a basic mounting platform 21 and a composite clamping mechanism, wherein the surface of the basic mounting platform 21 is provided with a cavity structure for positioning and fixing the blister support 11.

[0040] A composite clamping mechanism is arranged at the top end of the base mounting platform 21, the number of which corresponds to the sampling nickel sheet 13. The mechanism has a driving assembly 221 with elastic reset function and a rigid pressing head 222, the driving assembly 221 including a reset input end 2211 arranged at the top end of the base mounting platform 21 and needing to overcome the elastic restoring force when displaced laterally, and an execution output end 2212 capable of being elastically pressed against the upper surface of the sampling nickel sheet 13 in the third direction.

[0041] In operation, first, the blister support 11 with the flexible circuit board 12 and the sampling nickel sheet 13 mounted thereon is positioned and mounted in the cavity structure of the base mounting platform 21, so that the sampling nickel sheet 13 accurately corresponds to the preset welding area of the busbar 14;

[0042] Subsequently, the reset input end 2211 of the composite clamping mechanism is moved in the first direction, while the rigid pressing head 222 is pressed in the third direction against the top of the sampling nickel sheet 13, so that the sampling nickel sheet 13 is simultaneously subjected to the combined action of the third direction pressing force and the first direction tensioning force, thereby realizing zero-gap close contact with and stable positioning of the welding area of the busbar 14;

[0043] Then, in the state that the sampling nickel sheet 13 is kept under tension traction and close contact, the welding execution unit is controlled to move to the welding position, and welding is performed on the contact interface between the sampling nickel sheet 13 and the busbar 14. Finally, after the welding is completed, the pressing of the rigid pressing head 222 against the sampling nickel sheet 13 is released, and the reset input end 2211 is driven to reset, thereby removing the CCS integrated busbar 14 assembly that has completed welding.

[0044] As shown in Figure 3 , Figure 6 and Figure 7 , a pair of tracks 23 parallel to each other and located on both sides of the cavity structure are arranged on the base mounting platform 21, and a lockable sliding block 231 is arranged on the track 23. The reset input end 2211 of the driving assembly 221 is connected with the sliding block 231, and the reset input end 2211 can be displaced in the second direction along the track 23 with the sliding block 231 and locked and fixed at the target position.

[0045] A pair of tracks 23 parallel to each other and located on both sides of the cavity structure are arranged on the base mounting platform 21, and a lockable sliding block 231 is arranged on the track 23. The reset input end 2211 of the driving assembly 221 is connected with the sliding block 231, so that the reset input end 2211 can be displaced in the second direction along the track 23 with the sliding block 231 and fixed by the locking mechanism after reaching the target position.

[0046] Through the guide groove 211 structure arranged along the width direction of the base installation platform 21, the track 23 can be integrally adjusted in the first direction position, and the adjusting mechanism enables the execution output end 2212 of all composite clamping mechanisms installed on the same track 23 to realize synchronous position adjustment. This design facilitates the rigid pressing head 222 to accurately abut against the surface of the busbar 14 of different models or size specifications, improves the adaptability and versatility of the device to different product models, and ensures the consistency and cooperation of multiple clamping mechanisms during position adjustment.

[0047] As shown in Figure 4 , Figure 5 , the base installation platform 21 is provided with a guide groove 211 extending along the width direction thereof; the track 23 is slidably arranged in the guide groove 211 and perpendicular to the extension direction of the guide groove 211; the guide groove 211 is provided with an adjusting bolt 24, which is threadedly connected with the track 23, and the bolt head abuts against the bottom end of the base installation platform 21, for adjusting and locking the first direction position of the track 23 in the guide groove 211.

[0048] The base installation platform 21 is provided with a guide groove 211 extending along the width direction thereof, for providing a guide basis for the overall position adjustment of the track 23. The track 23 is slidably arranged in the guide groove 211, and the extension direction thereof is perpendicular to the guide groove 211, so that the track 23 can translate along the width direction of the base installation platform 21 within the range of the guide groove 211.

[0049] The guide groove 211 is further provided with an adjusting bolt 24, which is threadedly connected with the track 23, and the bolt head abuts against the bottom end of the base installation platform 21. By rotating the adjusting bolt 24, the track 23 can be driven to move accurately along the guide groove 211, and after adjustment, the first direction position of the track 23 in the guide groove 211 is adjusted and stably locked through the self-locking of the thread and the pressing effect of the bolt head on the bottom end.

[0050] This structure realizes the synchronous overall adjustment of the position of the execution output end 2212 of all composite clamping mechanisms installed on the same track 23, facilitates the adaptation of the welding requirements of busbars 14 of different models, and improves the versatility and adjustment accuracy of the device.

[0051] As shown in Figures 6 to 10 , the execution output end 2212 of the driving assembly 221 is provided with a threaded hole extending in the third direction; the top end of the rigid pressing head 222 is integrally formed with a threaded adjusting column 2221; the threaded adjusting column 2221 is threadedly connected with the threaded hole, for adjusting the third direction pressing position of the rigid pressing head 222.

[0052] The execution output end 2212 of the driving assembly 221 is provided with a threaded hole extending in the third direction, for providing a fine adjustment interface of the third direction position. The top end of the rigid pressing head 222 is integrally formed with a threaded adjusting column 2221, which is threadedly connected with the threaded hole of the execution output end 2212.

[0053] By rotating the rigid pressing head 222, the threaded adjusting column 2221 can be screwed into or out of the threaded hole, so as to realize the adjustment of the third direction extension length of the rigid pressing head 222. This adjustment mechanism enables the operator to flexibly adjust the pressing position and pressing force of the rigid pressing head 222 when contacting the sampling nickel sheet 13 according to the actual welding requirements and the height difference of different workpieces, so as to ensure that the third direction pressing force is always within a reasonable and stable range while the first direction tensioning force is applied. Not only does it enhance the adaptability of the device to the size tolerance of the workpiece, but also further optimizes the coordination between the third direction pressing and the first direction tensioning in the composite clamping process, and improves the positioning accuracy and fitting quality before welding.

[0054] As shown in Figures 6 to 10 The driving assembly 221 of the composite clamping mechanism includes a reset base 223, an elastic connecting arm, and a reset tension spring 226; the reset base 223 is fixedly arranged on the sliding block 231 to constitute the reset input end 2211, and a connecting column 224 vertically arranged at the center of the reset base 223 needs to overcome the elastic resistance when moving in the first direction and the second direction; one end of the elastic connecting arm is rotationally connected with the connecting column 224, and the other end is connected with the rigid pressing head 222 to constitute the execution output end 2212; the reset tension spring 226 is arranged in the elastic connecting arm, and its two ends are respectively connected between the connecting column 224 and the elastic connecting arm, for providing an elastic force for resetting the elastic connecting arm.

[0055] The reset base 223 is vertically arranged at the center with the connecting column 224, which needs to overcome the elastic resistance from the inside of the system during the movement in the first direction. One end of the elastic connecting arm is rotationally connected with the connecting column 224, and the other end is connected with the rigid pressing head 222, which together constitute the execution output end 2212 of the driving assembly 221.

[0056] The reset tension spring 226 is connected between the connecting column 224 and the elastic connecting arm respectively at both ends, for providing elastic restoring force to restore the elastic connecting arm to the initial position after the rotation or displacement of the elastic connecting arm. When the reset input end 2211 drives the first direction displacement of the reset base 223, the connecting column 224 moves synchronously and pulls the elastic connecting arm, and then the rigid pressing head 222 presses the sampling nickel sheet 13 in the third direction, and the sampling nickel sheet 13 is continuously and controllably pulled in the first direction by the elastic action of the reset tension spring 226. The elastic reset mechanism not only realizes the composite clamping action on the sampling nickel sheet 13 before welding, but also ensures that the mechanism can be reset smoothly after the welding is completed.

[0057] As shown in Figures 8 to 11 The reset base 223 is internally provided with a mounting cavity; the mounting cavity is provided with a mounting opening at the top end, the diameter of the mounting opening is greater than that of the connecting column 224; the bottom end of the connecting column 224 is provided with a sliding disc 2241 which is slidingly arranged at the bottom of the mounting cavity; the top of the mounting cavity is provided with a pressure ring 227, the top end of the sliding disc 2241 and the pressure ring 227 are in contact and sliding through the matching tapered surfaces; the pressure ring 227 and the top end of the mounting cavity are provided with an elastic element 228.

[0058] The mounting cavity is provided with a mounting opening at the top end, the diameter of the mounting opening is slightly greater than that of the connecting column 224, which provides vertical movement space for the connecting column 224 while limiting its radial swing.

[0059] The bottom end of the connecting column 224 is provided with a sliding disc 2241 which is slidingly arranged at the bottom plane of the mounting cavity, so that the connecting column 224 can move smoothly in the third direction under stress. The top of the mounting cavity is provided with a pressure ring 227, the lower surface of the pressure ring 227 and the upper end surface of the sliding disc 2241 are in contact and sliding through the matching tapered surfaces.

[0060] The pressure ring 227 and the top end of the mounting cavity are provided with an elastic element 228, which continuously applies downward elastic force to the pressure ring 227, and then decomposes the pressure through the tapered surface into vertical pressure and horizontal constraint force on the sliding disc 2241. When the connecting column 224 is subjected to lateral force due to first direction displacement, the tapered surface cooperation between the sliding disc 2241 and the pressure ring 227 will convert part of the lateral force into compression of the elastic element 228, so that the first direction movement of the connecting column 224 needs to continuously overcome the elastic resistance.

[0061] The structure not only realizes the elastic reset function of the connecting column 224, but also improves the motion stability and force transmission efficiency through the tapered surface cooperation, ensuring the smooth application and accurate control of the first direction tension force in the composite clamping process.

[0062] The mounting port is provided with an externally threaded cylinder 229 threadedly connected thereto, and the externally threaded cylinder 229 is integrally formed with an adjusting ring 2291 at the bottom end, and the elastic element 228 is arranged between the adjusting ring 2291 and the pressure ring 227. This structure allows the pre-tightening force of the elastic element 228 to be adjusted by rotating the externally threaded cylinder 229, thereby achieving precise control of the size of the elastic resistance to be overcome by the first direction movement of the connecting column 224, to adapt to the differentiated requirements for the tensioning force under different welding working conditions.

[0063] As shown in Figure 10 The bottom end of the reset base 223 is provided with a guide strip 2231 radially slidingly connected with the sliding block 231, the outer side of the reset base 223 is provided with a connecting lug 2232, the connecting lug 2232 is provided with a connecting groove parallel to the guide strip 2231, the sliding block 231 is provided with a bolt 2233 threadedly connected therewith, the bottom end of the bolt 2233 penetrates through the sliding block 231 and abuts against the track 23, and the head of the bolt 2233 abuts against the top end of the connecting groove.

[0064] The bottom end of the reset base 223 is provided with a guide strip 2231 radially slidingly connected with the sliding block 231, for ensuring the radial movement accuracy and stability of the reset base 223 on the sliding block 231. The outer side of the reset base 223 is provided with a connecting lug 2232, and the connecting lug 2232 is provided with a connecting groove parallel to the extension direction of the guide strip 2231.

[0065] The sliding block 231 is provided with an adjusting bolt 2233 threadedly connected therewith, the bottom end of the adjusting bolt 2233 penetrates through the sliding block 231 and abuts against the surface of the track 23 below, and the head of the bolt 2233 abuts against the top end of the connecting groove on the connecting lug 2232 downward. This structure allows the head of the adjusting bolt 2233 to compress the connecting groove when the adjusting bolt 2233 is screwed in, thereby locking the reset base 223 relative to the sliding block 231; conversely, unscrewing the adjusting bolt 2233 can release the constraint on the reset base 223, so that the reset base 223 can be finely adjusted in the radial position along the guide strip 2231. This design not only facilitates accurate adjustment and fixation of the installation position of the composite clamping mechanism according to actual assembly needs, but also improves the adaptability and maintainability of the overall structure, ensuring the reliability and repeat accuracy of the mechanism positioning in long-term use.

[0066] As shown in Figure 10As shown, the elastic connecting arm includes a connecting plate 2251, an upper arm 2252 and a lower arm 2253, the upper arm 2252 and the lower arm 2253 are arranged in parallel between the connecting plate 2251 and the connecting column 224, both ends of the upper arm 2252 and the lower arm 2253 are rotationally connected with the connecting column 224 and the connecting plate 2251, and both ends of the reset tension spring 226 are connected with the center of the upper arm 2252 and the connecting column 224 respectively.

[0067] The upper arm 2252 and the lower arm 2253 are arranged in parallel with each other between the connecting plate 2251 and the connecting column 224, and both ends of the upper arm 2252 and the lower arm 2253 are rotationally connected with the connecting column 224 and the connecting plate 2251 respectively, thereby forming a connecting arm structure with parallel four-bar linkage motion characteristics.

[0068] Both ends of the reset tension spring 226 are connected between the center of the upper arm 2252 and the connecting column 224. When the reset input end 2211 drives the connecting column 224 to move in the first direction, the upper arm 2252 and the lower arm 2253 swing in parallel under the constraint of rotation, thereby driving the connecting plate 2251 and the rigid pressing head 222 connected thereto to move correspondingly.

[0069] The reset tension spring 226 is stretched during the swinging of the connecting arm, and the elastic force of the reset tension spring 226 acts on the center of the upper arm 2252, thereby continuously providing an elastic restoring action of tending to reset the connecting arm while transmitting the displacement in the first direction. The parallel linkage structure not only enhances the stability and motion accuracy of the execution output end 2212 in the combined motion of the third direction pressure welding and the first direction traction, but also makes the force transmission of the reset tension spring 226 more direct and balanced, effectively improving the linearity and consistency of the tension control applied to the sampling nickel sheet 13 during the combined clamping process.

[0070] A CCS integrated busbar 14 welding method adopts a CCS integrated busbar 14 welding device, including the following steps:

[0071] Step one, position and install the blister support 11 installed with the flexible circuit board 12 and the sampling nickel sheet 13 in the cavity structure of the base installation platform 21, so that the sampling nickel sheet 13 corresponds to the preset welding area of the busbar 14;

[0072] Step two, drive the reset input end 2211 of the combined clamping mechanism to move in the first direction, and at the same time make the rigid pressing head 222 pressure weld in the third direction on the top of the sampling nickel sheet 13, so that the sampling nickel sheet 13 is continuously pulled by tension in the first direction and closely attached to the preset welding area of the busbar 14;

[0073] Step three, in the state that the sampling nickel sheet 13 is kept being pulled by tension and closely attached to the busbar 14, the welding execution unit is controlled to move to a welding position and perform welding on the contact interface of the sampling nickel sheet 13 and the busbar 14;

[0074] Step four, after the welding is completed, the crimping of the rigid pressing head 222 to the sampling nickel sheet 13 is released, the reset input end 2211 is driven to reset, and the CCS integrated busbar 14 assembly which has completed welding is removed.

[0075] The above embodiment only expresses one or several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A CCS integrated busbar welding device, used for welding sampling nickel sheets from a flexible circuit board mounted in a vacuum forming bracket to the surface of a busbar supported by the vacuum forming bracket, characterized in that, The welding machine includes a welding frame and a welding execution unit disposed on top of the welding frame and capable of performing compound movements in a first direction, a second direction, and a third direction. The welding frame includes: The basic installation platform has a cavity structure on its surface for positioning and fixing the vacuum forming bracket; A composite clamping mechanism has a drive assembly and a rigid pressing head. The drive assembly has a reset input end disposed at the top of the base mounting platform and which needs to overcome the elastic restoring force when displaced in a first direction, and an execution output end that can elastically press against the upper surface of the sampling nickel sheet in a third direction. The rigid pressing head is fixedly installed on the execution output end of the drive assembly in a third direction. While driving the reset input terminal to move in the first direction, the rigid pressing head presses against the top of the sampling nickel sheet in the third direction, so that the sampling nickel sheet is subjected to the traction force generated by the reset action of the reset input terminal in the first direction and is in close contact with the preset welding area of ​​the busbar.

2. The CCS integrated busbar welding device according to claim 1, characterized in that, The basic installation platform is provided with a pair of parallel tracks located on both sides of the cavity structure, and a lockable slider is provided on the track; the reset input end of the drive component is connected to the slider, and the reset input end can move along the track in a second direction with the slider and lock and fix it at the target position.

3. The CCS integrated busbar welding device according to claim 2, characterized in that, The basic installation platform is provided with a guide groove extending along its width direction. The track is slidably disposed within the guide groove and perpendicular to the extending direction of the guide groove; An adjusting bolt is provided in the guide groove. The adjusting bolt is threadedly connected to the track, and its head abuts against the bottom end of the base mounting platform. It is used to adjust and lock the track in the first direction position in the guide groove.

4. A CCS integrated busbar welding device according to any one of claims 1-3, characterized in that, The drive component's output terminal is provided with a threaded hole extending in a third direction; The top of the rigid pressing head is integrally formed with a threaded adjustment post; The threaded adjusting pin is threadedly connected to the threaded hole and is used to adjust the third-direction pressing position of the rigid pressing head.

5. A CCS integrated busbar welding device according to claim 2 or 3, characterized in that, The drive assembly of the composite clamping mechanism includes a reset base, an elastic connecting arm, and a reset tension spring. The reset base is fixedly mounted on the slider to form the reset input end. A connecting column that needs to overcome elastic resistance when moving in the first and second directions is vertically arranged at the center of the reset base. One end of the elastic connecting arm is rotatably connected to the connecting column, and the other end is connected to the rigid pressing head to form the execution output end; The reset spring is disposed inside the elastic connecting arm, with its two ends connected between the connecting column and the elastic connecting arm, respectively, to provide an elastic force for resetting the elastic connecting arm.

6. The CCS integrated busbar welding device according to claim 5, characterized in that, The reset base has an internal mounting cavity; The top of the mounting cavity has a mounting opening with a diameter larger than that of the connecting column; The bottom end of the connecting column is provided with a sliding disc that is slidably disposed at the bottom of the mounting cavity; A pressure ring is provided at the top of the mounting cavity, and the pressure ring slides in contact with the top of the sliding disk through mutually cooperating conical surfaces; An elastic element is provided between the pressure ring and the top of the mounting cavity.

7. The CCS integrated busbar welding device according to claim 6, characterized in that, An external threaded cylinder is provided in the mounting port and is threadedly connected thereto. An integrally formed adjusting ring is provided at the bottom end of the external threaded cylinder. The elastic element is provided between the adjusting ring and the pressure ring.

8. The CCS integrated busbar welding device according to claim 5, characterized in that, The bottom end of the reset base is provided with a guide bar that is radially slidably connected to the slider. The outer side of the reset base is provided with a connecting ear. The connecting ear is provided with a connecting groove parallel to the guide bar. The slider is provided with a bolt that is threadedly connected to it. The bottom end of the bolt passes through the slider and abuts against the track. The head of the bolt abuts against the top end of the connecting groove.

9. A CCS integrated busbar welding device according to claim 5, characterized in that, The elastic connecting arm includes a connecting plate, an upper arm, and a lower arm. The upper arm and the lower arm are arranged parallel between the connecting plate and the connecting column. Both ends of the upper arm and the lower arm are rotatably connected to the connecting column and the connecting plate. The two ends of the reset spring are respectively connected to the center position of the upper arm and the connecting column.

10. A method for welding CCS integrated busbars, characterized in that, The CCS integrated busbar welding device as described in any one of claims 1-3 includes the following steps: Step 1: Position and install the blister bracket with the flexible circuit board and sampling nickel sheet in the cavity structure of the basic mounting platform, so that the sampling nickel sheet corresponds to the preset welding area of ​​the busbar; Step 2: Drive the reset input end of the composite clamping mechanism to move along the first direction, and at the same time make the rigid pressing head press against the top of the sampling nickel sheet in the third direction, so that the sampling nickel sheet is subjected to continuous tension traction along the first direction and is tightly attached to the preset welding area of ​​the busbar. Step 3: While the sampled nickel sheet is under tension and pressed against the busbar, control the welding execution unit to move to the welding position and perform welding on the contact interface between the sampled nickel sheet and the busbar. Step four: After welding is completed, release the rigid pressing head from the sampling nickel sheet and drive the reset input terminal to reset, then remove the welded CCS integrated busbar assembly.

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