Busbar welding equipment and busbar welding method

Abstract

The present invention provides a busbar welding device and busbar welding method, comprising a battery string regular welding platform, a busbar welding platform, a battery string feeding device, a busbar feeding device, a busbar welding device, and a battery string unloading device, wherein: the battery string feeding device lays the battery strings onto the battery string regular welding platform; the battery string regular welding platform is used to adjust the battery strings to the welding position; the busbar feeding device includes an intermediate busbar feeding device and an end busbar feeding device, which respectively lay the intermediate busbars and the end busbars onto the busbar welding platform; the busbar welding device welds the intermediate busbars and the end busbars to the welding strips of the battery string group; and the battery string unloading device unloads the welded battery string group from the battery string regular welding platform. The present invention realizes automatic adjustment of the position of each battery string within the battery string group, improving the efficiency and quality of busbar welding.

Description

Technical Field

[0001] The present invention relates to the field of battery production, in particular to a busbar welding device and a busbar welding method. Background Art

[0002] The production of photovoltaic modules involves modularizing individual cells. The main steps include: using solder ribbons to weld individual cells (whole cells or half cells) into strings, arranging the strings in parallel to form cell strings, and finally welding busbars to the end ribbons of the cell strings.

[0003] The busbar welding equipment in the prior art cannot adjust the position of the battery string group. Therefore, a predetermined number of battery strings to be welded must be manually laid on the welding machine to form a battery string group, and the battery string group must be adjusted to a predetermined welding position.

[0004] The use of busbar welding equipment in the prior art to perform busbar welding has the disadvantages of low efficiency and unstable welding quality. Summary of the Invention

[0005] In view of the above technical problems existing in the busbar welding equipment in the prior art, the present invention provides a busbar welding equipment, and its specific technical solutions are as follows:

[0006] A busbar welding device includes a battery string regular welding platform, a busbar welding platform, a battery string feeding device, a busbar feeding device, a busbar welding device and a battery string unloading device, wherein:

[0007] The battery string feeding device is used to lay the battery strings to be welded onto the battery string regular welding platform to form a first battery string group and a second battery string group;

[0008] The battery string regularization welding platform is used to adjust the carried first battery string group and the second battery string group to a predetermined welding position;

[0009] The busbar feeding device includes an intermediate busbar feeding device and an end busbar feeding device. The intermediate busbar feeding device is used to provide a bent intermediate busbar and lay the intermediate busbar on the busbar welding platform so that the two ends of the intermediate busbar overlap with the tail welding strip of the first battery string group and the head welding strip of the second battery string group respectively. The end busbar feeding device is used to provide end busbars and lay the end busbars on the busbar welding platform so that the end busbars overlap with the head welding strip of the first battery string group or the tail welding strip of the second battery string group;

[0010] The busbar welding device is used to weld the middle busbar to the tail welding strip of the first battery string group and the head welding strip of the second battery string group, and to weld the end busbar to the head welding strip of the first battery string group or the tail welding strip of the second battery string group;

[0011] The battery string unloading device is used to unload and load the welded battery string groups from the battery string regular welding platform.

[0012] By coordinating a battery string regularization welding platform, a busbar welding platform, a battery string feeding device, a busbar feeding device, a busbar welding device, and a battery string unloading device, the present invention can automatically load battery strings and busbars to be welded onto the welding platform and complete automatic busbar welding, as well as automatically unload welded battery string groups from the welding platform. In particular, by regularizing the battery string regularization welding platform, the present invention can automatically adjust the position of each battery string within the battery string group, thereby further improving busbar welding efficiency and welding quality.

[0013] In some embodiments, the intermediate bus bar feeding device includes a first bus bar pulling device, a first bus bar cutting device, a bus bar bending device, a bus bar transfer platform, a first bus bar handling device and a bus bar grabber, wherein: the first bus bar pulling device is used to pull out the bus bar from the bus bar storage device, the first bus bar cutting device cuts the bus bar pulled out by the first bus bar pulling device, the bus bar bending device bends the cut bus bar to obtain an intermediate bus bar, the first bus bar handling device is used to transport the intermediate bus bar to the bus bar transfer platform, and the bus bar grabber is used to grab the intermediate bus bar from the bus bar transfer platform and lay the intermediate bus bar on the bus bar welding platform.

[0014] By configuring the intermediate bus bar feeding device as a first bus bar traction device, a first bus bar cutting device, a bus bar bending device, a bus bar transfer platform, a first bus bar handling device and a bus bar gripper, the intermediate bus bar feeding device realizes continuous automated processing of cutting, bending, forming and loading of the intermediate bus bar.

[0015] In some embodiments, the busbar bending device includes a frame, a first bending mechanism, a second bending mechanism and a third bending mechanism, wherein: a slide rail is provided on the frame; the first bending mechanism and the second bending mechanism are slidably connected to the frame via the slide rail, and the third bending mechanism is fixedly connected to the frame and is located between the first bending mechanism and the second bending mechanism; each bending mechanism includes a supporting platform, a pressing member and a bending member, wherein: the supporting platform is used to support the busbar cut by the first busbar cutting device, the pressing member is used to press the busbar on the supporting platform, and the bending member is used to bend the busbar on the supporting platform upward to form an intermediate busbar.

[0016] By providing a first bending mechanism, a second bending mechanism, and a third bending mechanism, the busbar bending device can achieve bending operations on four busbar sections. In particular, the distances between the first bending mechanism, the second bending mechanism, and the third bending mechanism can be flexibly adjusted. Therefore, the present invention can achieve bending operations on busbars of different lengths.

[0017] In some embodiments, the end bus bar feeding device includes a second bus bar pulling device, a second bus bar cutting device, and a second bus bar transporting device, wherein: the second bus bar pulling device is used to pull out the bus bar from the bus bar storage device, the second bus bar cutting device cuts the bus bar pulled out by the second bus bar pulling device to obtain the end bus bar, and the second bus bar transporting device is used to lay the end bus bar onto the bus bar welding platform.

[0018] By configuring the end busbar feeding device as a second busbar pulling device, a second busbar cutting device and a second busbar transporting device, the end busbar feeding device realizes continuous automatic processing of cutting, forming and loading of the end busbars.

[0019] In some embodiments, the busbar feeding device is provided in two groups, and the two groups of busbar feeding devices are provided on opposite sides of the busbar welding platform, wherein: the end busbar feeding device in the first group of busbar feeding devices lays the end busbar on the busbar welding platform so that the end busbar overlaps with the head welding strip of the first battery string group; the end busbar feeding device in the second group of busbar feeding devices lays the end busbar on the busbar welding platform so that the end busbar overlaps with the tail welding strip of the second battery string group; the intermediate busbar feeding device in the first group of busbar feeding devices and the intermediate busbar feeding device in the second group of busbar feeding devices alternately lay the intermediate busbar on the busbar welding platform so that the two ends of the intermediate busbar overlap with the tail welding strip of the first battery string group and the head welding strip of the second battery string group respectively.

[0020] By providing two sets of busbar feeding devices, parallel feeding of the end busbars and alternating feeding of the middle busbars are achieved, thereby significantly improving the feeding efficiency of the busbars.

[0021] In some embodiments, the battery string regular welding platform includes a first battery string regular welding platform and a second battery string regular welding platform arranged side by side along a first horizontal direction. The first battery string regular welding platform and the second battery string regular welding platform each include a plurality of regularization machines arranged in parallel along a second horizontal direction perpendicular to the first horizontal direction. Each regularization machine is used to carry a battery string. The first battery string group is laid on the first battery string regular welding platform, and the second battery string group is laid on the second battery string regular welding platform. The bus bar welding platform includes a first end bus bar welding platform, a second end bus bar welding platform, and an intermediate bus bar welding platform, wherein: the first end bus bar welding platform is located outside the first battery string regular welding platform, the second end bus bar welding platform is located outside the second battery string regular welding platform, and the intermediate bus bar welding platform is located between the first battery string regular welding platform and the second battery string regular welding platform. The end bus bars are laid on the first end bus bar welding platform or the second end bus bar welding platform, and the intermediate bus bars are laid on the intermediate bus bar welding platform.

[0022] By setting the battery string regular welding platform as a first battery string regular welding platform and a second battery string regular welding platform side by side, and setting the bus bar welding platform as a first end bus bar welding platform, a second end bus bar welding platform and an intermediate bus bar welding platform, the present invention can synchronously weld the intermediate bus bar and the end bus bar to the battery string group, thereby improving the bus bar welding efficiency.

[0023] In some embodiments, the first battery string regularization welding platform and the second battery string regularization welding platform each include a first guide rail extending along a second horizontal direction, and the regularization machines of the first battery string regularization welding platform and the second battery string regularization welding platform are slidably connected to the corresponding first guide rail and can translate along the first guide rail in the second horizontal direction. The regularization machines include an adjustment mechanism and a battery string support plate, wherein the battery string support plate is connected to a driving end of the adjustment mechanism, and the adjustment mechanism is used to drive the battery string support plate to translate in the first horizontal direction and to drive the battery string support plate to rotate in the horizontal direction.

[0024] Controlling the battery string adjustment platform to move along the first guide rail allows the battery string to be positioned in the second horizontal direction. The adjustment mechanism and the battery string support plate cooperate to adjust the battery string's position in the first horizontal direction and its horizontal angle. Thus, the battery string regularization welding platform of the present invention automatically adjusts the position and angle of the battery string assembly, ensuring that the battery string assembly is adjusted to the desired position.

[0025] In some embodiments, the adjustment mechanism includes a first mounting plate, a second mounting plate and a rotation drive mechanism, wherein: the first mounting plate is slidably connected to the first guide rail, and the first mounting plate is provided with a second guide rail extending along the first horizontal direction; the second mounting plate is slidably connected to the second guide rail and can translate along the second guide rail in the first horizontal direction; the rotation drive mechanism is provided on the second mounting plate, the battery string supporting plate is connected to the driving end of the rotation drive mechanism, and the rotation drive mechanism is used to drive the battery string supporting plate to rotate in the horizontal direction.

[0026] Through the cooperation of the first mounting plate, the second mounting plate and the rotation drive mechanism, the adjustment mechanism realizes the position adjustment of the battery string in the first horizontal direction and the angle adjustment of the battery string in the horizontal direction.

[0027] In some embodiments, the battery string feeding device includes a battery string regular loading device and a battery string loading and transporting device, wherein the battery string regular loading device is used to adjust the glass plate carrying the battery strings to be welded to a predetermined loading position, and the battery string loading and transporting device is used to pick up the battery strings to be welded from the glass plate at the loading position and lay the picked up battery strings onto the battery string regular welding platform; the battery string unloading device includes a battery string regular unloading device and a battery string unloading and transporting device, wherein the battery string regular unloading device is used to adjust the glass plate to a predetermined unloading position, and the battery string unloading and transporting device is used to pick up the welded battery string group from the battery string regular welding platform and transport the picked up battery string group to the glass plate at the unloading position. The busbar welding equipment also includes a glass plate circulation device, which is arranged between the battery string regular loading device and the battery string regular unloading device, and is used to transfer the glass plate on the battery string regular loading device that has been emptied by the battery string loading and transporting device to the battery string regular unloading device.

[0028] Through the cooperation of the battery string regular loading device and the battery string loading and transporting device, the battery string feeding device of the present invention can efficiently lay the battery strings to be welded onto the battery string regular welding platform to form a battery string group. Through the cooperation of the battery string regular unloading device and the battery string unloading and transporting device, the battery string unloading device of the present invention can efficiently unload and load the completed battery string group from the battery string regular welding platform. And by setting up a glass plate circulation device, it is possible to transfer the glass plate emptied from the battery string regular loading device to the battery string regular unloading device, so that the glass plate can be used to receive the completed battery string group picked up from the battery string regular welding platform by the battery string unloading and transporting device.

[0029] In some embodiments, the battery string regular loading device and the battery string regular unloading device both include a fixed bracket, a lifting bracket, a conveying mechanism and a blocking and limiting mechanism, wherein: the conveying mechanism is arranged on the lifting bracket, and the conveying mechanism is configured to drive the glass plate to move horizontally; the lifting bracket is arranged on the fixed bracket, and the lifting bracket is configured to be lifted and lowered in the vertical direction to drive the glass plate on the conveying mechanism to lift and lower synchronously; the blocking and limiting mechanism is arranged on the lifting bracket and is located on the conveying path of the conveying mechanism, and the blocking and limiting mechanism is configured to achieve blocking and limiting of the glass plate.

[0030] By setting up the battery string regular loading device and the battery string regular unloading device, the battery string regular loading device and the battery string regular unloading device can adjust the glass plates thereon to the predetermined loading position and unloading position, and can complete the height adjustment of the glass plates in the vertical direction, thereby facilitating the loading of the battery string loading and transporting device and the unloading of the battery string unloading and transporting device.

[0031] Another aspect of the present invention provides a busbar welding method, comprising:

[0032] The battery string feeding device lays the battery strings to be welded onto the battery string regular welding platform to form a first battery string group and a second battery string group;

[0033] The battery string regularization welding platform adjusts the first battery string group and the second battery string group to the predetermined welding position;

[0034] The intermediate bus bar feeding device in the bus bar feeding device provides a bent intermediate bus bar and lays the intermediate bus bar on the bus bar welding platform, so that the two ends of the intermediate bus bar overlap with the tail welding strip of the first battery string group and the head welding strip of the second battery string group respectively; the end bus bar feeding device in the bus bar feeding device provides an end bus bar and lays the end bus bar on the bus bar welding platform, so that the end bus bar overlaps with the head welding strip of the first battery string group or the tail welding strip of the second battery string group; the bus bar welding device welds the intermediate bus bar to the tail welding strip of the first battery string group and the head welding strip of the second battery string group, and welds the end bus bar to the head welding strip of the first battery string group or the tail welding strip of the second battery string group; the battery string unloading device unloads and loads the battery string group that has completed welding from the battery string regular welding platform.

[0035] The busbar welding method of the present invention can automatically load the battery strings and busbars to be welded onto the welding platform and complete the automatic welding of the busbars, as well as automatically unload the welded battery string group from the welding platform. In particular, by regularizing the battery string welding platform, the present invention can automatically adjust the position of each battery string within the battery string group, further improving the efficiency and quality of busbar welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of the busbar welding equipment provided by the present invention at a first viewing angle;

[0037] Figure 2 A schematic structural diagram of the busbar welding equipment provided by the present invention from a second viewing angle;

[0038] Figure 3 A schematic structural diagram of the busbar welding equipment provided by the present invention from a third viewing angle;

[0039] Figure 4 A schematic structural diagram of the busbar welding equipment provided by the present invention from a first viewing angle after omitting components such as a battery string feeding device and a battery string unloading device;

[0040] Figure 5 A schematic structural diagram of the busbar welding equipment provided by the present invention from a second viewing angle after omitting components such as a battery string feeding device and a battery string unloading device;

[0041] Figure 6 A schematic structural diagram of the busbar welding equipment provided by the present invention from a third viewing angle after omitting components such as the battery string feeding device and the battery string unloading device;

[0042] Figure 7 Schematic diagram of the structure of the battery string regular welding platform and the busbar welding platform in some embodiments of the present invention;

[0043] Figure 8 Schematic diagram of the structure of the battery string regular feeding device in some embodiments of the present invention;

[0044] Figure 9 Schematic diagram of the structure of the battery string regular welding platform in some embodiments of the present invention;

[0045] Figure 10 This is a schematic structural diagram of the first battery string regular welding platform in some embodiments of the present invention;

[0046] Figure 11 Schematic diagram of the structure of the tidying machine in some embodiments of the present invention;

[0047] Figure 12 Schematic diagram of the structure of the busbar bending device in some embodiments of the present invention;

[0048] Figure 13 Schematic diagram of the structure of the first bending mechanism in some embodiments of the present invention;

[0049] Figure 14 A schematic diagram of an intermediate bus bar and a battery string after welding provided in one embodiment of the present invention;

[0050] Figures 1 to 14 Included are:

[0051] Battery string regularization welding platform 10, first battery string regularization welding platform 11, second battery string regularization welding platform 12, first guide rail 111, regularization machine 112, battery string carrying plate 1121, first mounting plate 1122, second mounting plate 1123, rotation drive mechanism 1124;

[0052] busbar welding platform 20, first end busbar welding platform 21, second end busbar welding platform 22, middle busbar welding platform 23;

[0053] Battery string feeding device 30, battery string regular loading device 31, battery string loading and handling device 32, fixed bracket 311, lifting bracket 312, conveying mechanism 313, blocking and limiting mechanism 314;

[0054] Busbar feeding device 40, busbar bending device 41, busbar transfer platform 42, busbar gripper 43, frame 411, first bending mechanism 412, second bending mechanism 413, third bending mechanism 414, carrying platform 4121, pressing member 4122, bending member 4123;

[0055] Busbar welding device 50, first end busbar welding device 51, second end busbar welding device 52, middle busbar welding device 53;

[0056] Battery string unloading device 60, battery string regular unloading device 61, battery string unloading and conveying device 62. Specific implementation plan

[0057] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] In some busbar welding examples, each battery string in the battery string group to be welded is formed by welding a predetermined number of broken half-cell cells in series. The length of these battery strings is only half of that of a standard battery string (formed by welding a predetermined number of whole-cell cells in series). Therefore, in order to ensure that the overall length of the battery string assembly after busbar welding meets the predetermined requirements, in the subsequent busbar welding process, it is necessary to use an intermediate busbar to connect the two battery strings to be welded end to end to form a standard battery string group of predetermined length, and weld end busbars to the head and tail of the standard battery string group respectively.

[0059] Before welding the busbars, each battery string within the two battery string groups needs to be adjusted to a predetermined welding position. Existing busbar welding equipment cannot adjust the position of the battery string groups. Therefore, a predetermined number of battery strings to be welded must be manually laid out on the welding table to form the battery string group, and then the battery string group must be adjusted to the predetermined welding position.

[0060] In light of this, the present invention provides a busbar welding device that automatically loads battery strings and busbars to be welded onto a welding platform, automatically welds the busbars, and automatically unloads welded battery strings from the welding platform. In particular, the present invention can automatically adjust the position of each battery string within a battery string group, thereby improving busbar welding efficiency and quality.

[0061] like Figures 1 to 7 As shown, the busbar welding equipment provided by the present invention includes a battery string regular welding platform 10, a busbar welding platform 20, a battery string feeding device 30, a busbar feeding device 40, a busbar welding device 50 and a battery string unloading device 60. Among them:

[0062] The battery string feeding device 30 is used to lay the battery strings to be welded onto the battery string regular welding platform 10 to form a first battery string group and a second battery string group;

[0063] The battery string regularization welding platform 10 is used to adjust the supported first battery string group and second battery string group to a predetermined welding position.

[0064] The bus bar feeding device 40 includes an intermediate bus bar feeding device and an end bus bar feeding device. The intermediate bus bar feeding device is used to provide a bent intermediate bus bar and lay the intermediate bus bar on the bus bar welding platform 20, so that the two ends of the intermediate bus bar overlap with the tail welding strip of the first battery string group and the head welding strip of the second battery string group respectively. The end bus bar feeding device is used to provide an end bus bar and lay the end bus bar on the bus bar welding platform 20, so that the end bus bar overlaps with the head welding strip of the first battery string group or the tail welding strip of the second battery string group.

[0065] The busbar welding device 50 is used to weld the middle busbar to the tail welding strip of the first battery string group and the head welding strip of the second battery string group, and to weld the end busbar to the head welding strip of the first battery string group or the tail welding strip of the second battery string group;

[0066] The battery string unloading device 60 is used to unload and load the welded battery string groups from the battery string regular welding platform.

[0067] It can be seen that through the cooperation of the battery string regularization welding platform 10, the busbar welding platform 20, the battery string feeding device 30, the busbar feeding device 40, the busbar welding device 50 and the battery string unloading device 60, the present invention can automatically load the battery strings and busbars to be welded onto the corresponding welding platforms and complete the automatic welding of the busbars, and automatically unload the welded battery string groups from the welding platforms. In particular, through the regularization of the battery string regularization welding platform 20, the present invention can automatically adjust the position of each battery string in the two battery string groups, thereby further improving the busbar welding efficiency and welding quality.

[0068] In order to achieve the welding of the first battery string group and the second battery string group, the middle bus bar needs to be bent. Figure 14 As shown, when welding the first and second battery string groups, four intermediate busbars are required: the first busbar h1, the second busbar h2, the third busbar h3, and the fourth busbar h4. The first busbar h1 is used to weld battery strings a1 and b1; the second busbar h2 is used to weld battery strings a2 and b2, as well as battery strings a3 and b3; the third busbar h3 is used to weld battery strings a4 and b4, as well as battery strings a5 and b5; and the fourth busbar h4 is used to weld battery strings a6 and b6. The end of the first busbar h1 near the second busbar h2 needs to be connected to the lead wire x1, so it needs to be bent upward. After bending, the first busbar h1 is roughly L-shaped. Both ends of the second and third busbars h2 and h3 need to be connected to the junction box JX, so they also need to be bent upward, forming a roughly U-shape. The end of the fourth busbar h4 near the third busbar h3 needs to be connected to the lead x2, so it also needs to be bent upward, forming a roughly L-shape. The adjacent ends of the first and second busbars h1 and h2 can be connected to the same lead x1. The adjacent ends of the second and third busbars h2 and h3 can be connected to the same junction box JX, and the adjacent ends of the third and fourth busbars h3 and h4 can be connected to the same lead x2.

[0069] In order to realize the production and feeding of the intermediate busbar, optional Figure 4As shown, the intermediate bus bar feeding device includes a first bus bar pulling device, a first bus bar cutting device, a bus bar bending device 41, a bus bar transfer platform 42, a first bus bar conveying device and a bus bar gripper 43, wherein: the first bus bar pulling device is used to pull out the bus bar from the bus bar storage device, the first bus bar cutting device cuts the bus bar pulled out by the first bus bar pulling device, the bus bar bending device 41 bends the cut bus bar to obtain an intermediate bus bar, the first bus bar conveying device is used to convey the intermediate bus bar to the bus bar transfer platform 42, and the bus bar gripper 43 is used to grab the intermediate bus bar from the bus bar transfer platform 42 and lay the intermediate bus bar on the bus bar welding platform 20.

[0070] It can be seen that by setting the intermediate bus bar feeding device as the first bus bar traction device, the first bus bar cutting device, the bus bar bending device 41, the bus bar transfer platform 42, the first bus bar handling device and the bus bar gripper 43, the intermediate bus bar feeding device realizes the continuous automatic processing of cutting, bending and loading of the intermediate bus bar.

[0071] As those skilled in the art will appreciate, for different welding embodiments, the required lengths of the intermediate bus bars are different. In order to achieve the bending of bus bars of different lengths to produce intermediate bus bars of corresponding lengths, it is optional, such as Figure 12 and Figure 13 As shown, the busbar bending device 41 includes three bending mechanisms. The first bending mechanism is used to bend the ends of the first busbar h1 and the second busbar h2 that are close to each other. The second bending mechanism is used to bend the ends of the third busbar h3 and the fourth busbar h4 that are close to each other. The third bending mechanism is used to bend the ends of the second busbar h2 and the third busbar h3 that are close to each other. Specifically, the busbar bending device 41 includes a frame 411, a first bending mechanism 412, a second bending mechanism 413, and a third bending mechanism 414. The frame 411 is provided with a slide rail. The first bending mechanism 412 and the second bending mechanism 413 are slidably connected to the frame 411 via the slide rail. The third bending mechanism 414 is connected to the frame 411 and is located between the first bending mechanism 412 and the second bending mechanism 413.

[0072] Optionally, the structures of the three bending mechanisms are the same. Taking the first bending mechanism 412 as an example, it includes a supporting platform 4121, a pressing member 4122 and a bending member 4123, wherein: the supporting platform 4121 is used to support the bus bar, the pressing member 4123 is used to press the bus bar on the supporting platform 4121, and the bending member 4123 is used to bend the bus bar on the supporting platform 4121 upward.

[0073] The working process of the busbar bending device 41 in one embodiment is as follows:

[0074] Adjustment: According to the lengths of the second bus bar h2 and the third bus bar h3, adjust the positions of the first bending mechanism 412 and the second bending mechanism 413 and fix the first bending mechanism 412 and the second bending mechanism 413 to the guide rail.

[0075] Loading: Place the tail of the first bus bar h1 on the supporting platform 4121 of the first bending mechanism 412; place the head of the second bus bar h2 on the supporting platform 4121 of the first bending mechanism 412, and place the tail of the second bus bar h2 on the supporting platform 4121 of the third bending mechanism 414; place the head of the third bus bar h3 on the supporting platform 4121 of the third bending mechanism 414, and place the tail of the third bus bar h3 on the supporting platform 4121 of the second bending mechanism 413; place the head of the fourth bus bar h4 on the supporting platform 4121 of the second bending mechanism 413.

[0076] Pressing: Control the pressing member 4122 of the first bending mechanism 412 to press the tail of the first busbar h1 and the head of the second busbar h2. Control the pressing member 4122 of the third bending mechanism 414 to press the tail of the second busbar h2 and the head of the third busbar h3. Control the pressing member 4122 of the second bending mechanism 413 to press the tail of the third busbar h3 and the head of the fourth busbar h4.

[0077] Bending: The first, second, and third bending mechanisms 412, 413, and 414 are controlled to move the bending members 4123 upward synchronously. During this process, the tail of the first busbar h1 and the head of the second busbar h2 are bent upward by the bending member 4123 of the first bending mechanism 412. The tail of the second busbar h2 and the head of the third busbar h3 are bent upward by the pressing member 4122 of the third bending mechanism 414. The tail of the third busbar h3 and the head of the fourth busbar h4 are bent upward by the pressing member 4122 of the second bending mechanism 413. After the bending operation, the first and fourth busbars h1 and h4 are roughly L-shaped; after the bending operation, the second and third busbars h2 and h3 are roughly U-shaped.

[0078] It can be seen that through the cooperation of the first bending mechanism 412, the second bending mechanism 413 and the third bending mechanism 414, the busbar bending device 41 can perform synchronous bending of four busbars. In particular, by adjusting the positions of the first bending mechanism 412 and the second bending mechanism 413, the present invention can realize the bending operation of the second busbar h2 and the third busbar h3 of different lengths.

[0079] Unlike middle busbars, end busbars do not need to be bent. Optionally, the end busbar feeding device includes a second busbar pulling device, a second busbar cutting device, and a second busbar handling device. The second busbar pulling device is used to pull busbars from the busbar storage device, the second busbar cutting device cuts the busbars pulled by the second busbar pulling device to obtain end busbars, and the second busbar handling device is used to lay the end busbars onto the busbar welding platform. Thus, by configuring the end busbar feeding device as a second busbar pulling device, a second busbar cutting device, and a second busbar handling device, the end busbar feeding device achieves continuous automated processing of cutting, forming, and loading end busbars.

[0080] In order to save equipment space and reduce equipment costs, optionally, the second busbar transporting device and the first busbar transporting device can be set to the same transporting device 44, which alternately transports the end busbars to the first end busbar welding platform / second end busbar welding platform and the transfer platform 42.

[0081] Optionally, in order to improve the efficiency of busbar feeding, the busbar feeding device is provided in two groups, and the two groups of busbar feeding devices 40 are respectively arranged on opposite sides of the busbar welding platform 20, wherein: the end busbar feeding device in the first group of busbar feeding devices 40 lays the end busbar on the busbar welding platform 20, so that the end busbar overlaps with the head welding ribbon of the first battery string group. Simultaneously, the end busbar feeding device in the second group of busbar feeding devices 40 lays the end busbar on the busbar welding platform 20, so that the end busbar overlaps with the tail welding ribbon of the second battery string group. The middle busbar feeding device in the first group of busbar feeding devices 40 and the middle busbar feeding device in the second group of busbar feeding devices 40 alternately lay the middle busbar on the busbar welding platform 20, so that the two ends of the middle busbar overlap with the tail welding ribbon of the first battery string group and the head welding ribbon of the second battery string group, respectively.

[0082] In order to realize the regularization of the first battery string group and the second battery string group and the bus bar welding, it is optional, such as Figures 4 to 6 、 Figure 7 and Figures 9 and 10As shown, the battery string regular welding platform 10 includes a first battery string regular welding platform 11 and a second battery string regular welding platform 12 arranged side by side along a first horizontal direction (such as the X-axis direction in the figure). The first battery string regular welding platform 11 and the second battery string regular welding platform 12 each include a plurality of regular machines 112 arranged in parallel along a second horizontal direction perpendicular to the first horizontal direction (such as the Y-axis direction in the figure), each regular machine 112 is used to carry a string of battery strings. The first battery string group is laid on the first battery string regular welding platform 11, and the second battery string group is laid on the second battery string regular welding platform 12.

[0083] Correspondingly, in order to achieve the support and welding of the end busbars and the middle busbars, such as Figure 7 As shown, the busbar welding platform 20 includes a first end busbar welding platform 21, a second end busbar welding platform 22, and an intermediate busbar welding platform 23, wherein: the first end busbar welding platform 21 is located on the outside of the first battery string regular welding platform 11, the second end busbar welding platform 22 is located on the outside of the second battery string regular welding platform 12, and the intermediate busbar welding platform 23 is located between the first battery string regular welding platform 11 and the second battery string regular welding platform 12.

[0084] In some optional embodiments, the end busbar feeding device of the first group of busbar feeding devices 40 lays the end busbar onto the first end busbar welding platform 21, so that the end busbar overlaps with the head welding ribbon of the first battery string group supported on the first end busbar welding platform 21. Simultaneously, the second group of busbar feeding devices 40 lays the end busbar onto the second end busbar welding platform 22, so that the end busbar overlaps with the tail welding ribbon of the second battery string group supported on the second end busbar welding platform 22. The intermediate busbar welding platform 23 is configured to be liftable, and the first group of busbar feeding devices 40 and the second group of busbar feeding devices 40 alternately lay the intermediate busbar onto the intermediate busbar welding platform 23, which is lifted upward so that the intermediate busbar overlaps with the tail welding ribbon of the first battery string group and the head welding ribbon of the second battery string group.

[0085] In order to achieve synchronous welding of the end bus bars and the middle bus bars at both ends and improve welding efficiency, it is optional, such as Figures 4 to 6As shown, the busbar welding device 50 includes a first end busbar welding device 51, a second end busbar welding device 52, and an intermediate busbar welding device 53, wherein: the first end busbar welding device 51 is used to weld the end busbars on the first end busbar welding platform 21 to the head welding strip of the first battery string group. The second end busbar welding device 52 is used to weld the end busbars on the second end busbar welding platform 22 to the tail welding strip of the second battery string group. The intermediate busbar welding device 53 is used to weld the intermediate busbars on the intermediate busbar welding platform 23 to the tail welding strip of the first battery string group and the head welding strip of the second battery string group.

[0086] It can be seen that by setting the battery string regular welding platform 10 as a first battery string regular welding platform 11 and a second battery string regular welding platform 12 side by side, setting the bus bar welding platform 20 as a first end bus bar welding platform 21, a second end bus bar welding platform 22 and an intermediate bus bar welding platform 23, and setting the bus bar welding device 50 as a first end bus bar welding device 51, a second end bus bar welding device 52 and an intermediate bus bar welding device 53, the bus bar welding equipment of the present invention can synchronously weld the intermediate bus bar and the end bus bar to the battery string group, thereby improving the bus bar welding efficiency.

[0087] like Figure 9 and Figure 10 As shown, optionally, the first battery string regular welding platform 11 and the second battery string regular welding platform 12 both include a first guide rail 111 extending along the second horizontal direction, and the regularization machines 112 of the first battery string regular welding platform 11 and the second battery string regular welding platform 12 are both slidably connected to the corresponding first guide rail 111 and can be translated along the first guide rail 111 in the second horizontal direction.

[0088] like Figure 11 As shown, optionally, the tidying machine 112 includes an adjustment mechanism and a battery string carrier plate 1121, wherein: the battery string carrier plate 1121 is connected to the driving end of the adjustment mechanism, and the adjustment mechanism is used to drive the battery string carrier plate 1121 to translate in the first horizontal direction, and to drive the battery string carrier plate 1121 to rotate in the horizontal direction. Optionally, the adjustment mechanism includes a first mounting plate 1122, a second mounting plate 1123, and a rotation drive mechanism 1124, wherein: the first mounting plate 1122 is slidably connected to the first guide rail 111, and the first mounting plate 1122 is provided with a second guide rail extending in the first horizontal direction. The second mounting plate 1123 is slidably connected to the second guide rail and can translate along the second guide rail in the first horizontal direction. The rotation drive mechanism 1124 is provided on the second mounting plate 1123, and the battery string carrier plate 1121 is connected to the driving end of the rotation drive mechanism 1124, and the rotation drive mechanism 1124 is used to drive the battery string carrier plate 1121 to rotate in the horizontal direction.

[0089] Continue to refer Figures 1 to 3 As shown, the battery string feeding device 30 includes a battery string regular loading device 31 and a battery string loading and conveying device 32, wherein the battery string regular loading device 31 is used to adjust the glass plate carrying the battery strings to be welded to a predetermined loading position, and the battery string loading and conveying device 32 is used to pick up the battery strings to be welded from the glass plate at the loading position and lay the picked up battery strings onto the battery string regular welding platform 10.

[0090] The battery strings to be welded are placed on the glass plate, and the battery string regular loading device 31 transports the glass plate to a predetermined loading position and lifts the glass plate to a predetermined height, so that the battery string loading and transporting device 32 can conveniently and quickly pick up the battery strings to be welded from the glass plate and transport the battery strings to the battery string regular welding platform 10.

[0091] Similarly, the battery string unloading device 60 includes a battery string regular unloading device 61 and a battery string unloading and conveying device 62, wherein the battery string regular unloading device 61 is used to adjust the glass plate to a predetermined unloading position, and the battery string unloading and conveying device 62 is used to pick up the welded battery string group from the battery string regular welding platform 10 and convey the picked-up battery string group to the glass plate at the unloading position.

[0092] Optionally, the battery string regular feeding device 31 and the battery string regular unloading device 61 have the same structure, so this specification only describes the structure of the battery string regular feeding device 31. Figure 8 As shown, the battery string regular loading device 31 includes a fixed support 311, a lifting support 312, a conveying mechanism 313, and a blocking and limiting mechanism 314. The conveying mechanism 313 is mounted on the lifting support 312 and is configured to drive the glass sheet to move horizontally. The lifting support 312 is mounted on the fixed support 312 and is configured to rise and fall vertically to drive the glass sheet on the conveying mechanism 313 to rise and fall synchronously. The blocking and limiting mechanism 314 is mounted on the lifting support 312 and is located in the conveying path of the conveying mechanism 313. The blocking and limiting mechanism 314 is configured to block and limit the glass sheet.

[0093] It can be seen that through the cooperation of the conveying mechanism 313, the blocking and limiting mechanism 314 and the lifting bracket 312, the battery string regular loading device 31 can realize the adjustment of the horizontal position and vertical height of the glass plate carrying the battery string, so that the battery string loading and handling device 32 can easily pick up the battery string to be welded from the glass plate and lay the picked up battery string on the battery string regular welding platform 10.

[0094] Optionally, the conveying mechanism 313 includes a plurality of conveying belts installed on the lifting bracket 312. The glass plate carrying the battery string is supported on a bearing surface formed by these conveying belts and is translated under the drive of these conveying belts. Figure 8 In this embodiment, three conveyor belts are provided. Two sets of blocking and limiting mechanisms 314 are provided, each set being positioned between two adjacent conveyor belts. When a glass sheet carrying a battery string is conveyed to the loading position by the conveyor mechanism 313, the two sets of blocking and limiting mechanisms 314 simultaneously extend upward from the conveyor belts, thereby blocking and positioning the glass sheet.

[0095] Optionally, the busbar welding equipment of the present invention also includes a glass plate circulation device (not shown), which is arranged between the battery string regular loading device 31 and the battery string regular unloading device 61, and is used to: transfer the glass plate on the battery string regular loading device 31 that is emptied by the battery string loading and conveying device 32 to the battery string regular unloading device 61, so as to use the glass plate to receive the completed welded battery string group picked up from the battery string regular welding platform 10 by the battery string unloading and conveying device 62.

[0096] The present invention also provides a busbar welding method, which comprises:

[0097] The battery string feeding device 30 lays the battery strings to be welded onto the battery string regular welding platform 10 to form a first battery string group and a second battery string group.

[0098] The battery string regularization welding platform 10 adjusts the first battery string group and the second battery string group to a predetermined welding position.

[0099] The intermediate bus bar feeding device in the bus bar feeding device 40 provides a bent intermediate bus bar and lays the intermediate bus bar on the bus bar welding platform 20, so that the two ends of the intermediate bus bar overlap with the tail welding strip of the first battery string group and the head welding strip of the second battery string group respectively. The end bus bar feeding device in the bus bar feeding device 40 provides an end bus bar and lays the end bus bar on the bus bar welding platform 20, so that the end bus bar overlaps with the head welding strip of the first battery string group or the tail welding strip of the second battery string group; the bus bar welding device 50 welds the intermediate bus bar to the tail welding strip of the first battery string group and the head welding strip of the second battery string group, and welds the end bus bar to the head welding strip of the first battery string group or the tail welding strip of the second battery string group; the battery string unloading device 60 unloads and loads the battery string groups that have completed welding from the battery string regular welding platform.

[0100] The present invention has been described above in sufficient detail with certain particularities. Those skilled in the art will appreciate that the descriptions in the embodiments are merely illustrative, and that all modifications that do not depart from the true spirit and scope of the invention are intended to be within the scope of protection of the present invention. The scope of protection claimed in the present invention is defined by the appended claims, not by the foregoing description of the embodiments.

Claims

1. A busbar welding device, characterized in that: The busbar welding equipment includes a battery string regular welding platform, a busbar welding platform, a battery string feeding device, a busbar feeding device, a busbar welding device and a battery string unloading device, wherein: The battery string feeding device includes a battery string regular loading device and a battery string loading and transporting device, wherein the battery string regular loading device is used to adjust the glass plate carrying the battery strings to be welded to a predetermined loading position; the battery string loading and transporting device is used to pick up the battery strings to be welded from the glass plate at the loading position and lay the picked-up battery strings onto the battery string regular welding platform to form a first battery string group and a second battery string group; The battery string regular welding platform is used to adjust the carried first battery string group and the second battery string group to a predetermined welding position; The busbar feeding device includes an intermediate busbar feeding device and an end busbar feeding device. The intermediate busbar feeding device is used to provide a bent intermediate busbar and lay the intermediate busbar on the busbar welding platform so that the two ends of the intermediate busbar overlap with the tail welding strip of the first battery string group and the head welding strip of the second battery string group respectively. The end busbar feeding device is used to provide an end busbar and lay the end busbar on the busbar welding platform so that the end busbar overlaps with the head welding strip of the first battery string group or the tail welding strip of the second battery string group; The busbar welding device is used to weld the middle busbar to the tail welding strip of the first battery string group and the head welding strip of the second battery string group, and to weld the end busbar to the head welding strip of the first battery string group or the tail welding strip of the second battery string group; The battery string unloading device is used to unload and load the welded battery string groups from the battery string regular welding platform; The battery string regular welding platform includes a first battery string regular welding platform and a second battery string regular welding platform arranged side by side along a first horizontal direction; the bus bar welding platform includes a first end bus bar welding platform, a second end bus bar welding platform, and an intermediate bus bar welding platform, wherein: the first end bus bar welding platform is located on the outside of the first battery string regular welding platform, the second end bus bar welding platform is located on the outside of the second battery string regular welding platform, the intermediate bus bar welding platform is located between the first battery string regular welding platform and the second battery string regular welding platform, the end bus bar is laid on the first end bus bar welding platform or the second end bus bar welding platform, and the intermediate bus bar is laid on the intermediate bus bar welding platform.

2. The busbar welding equipment according to claim 1, wherein The intermediate bus bar feeding device includes a first bus bar pulling device, a first bus bar cutting device, a bus bar bending device, a bus bar transfer platform, a first bus bar handling device and a bus bar gripper, wherein: the first bus bar pulling device is used to pull out the bus bar from the bus bar storage device, the first bus bar cutting device cuts the bus bar pulled out by the first bus bar pulling device, the bus bar bending device bends the cut bus bar to obtain the intermediate bus bar, the first bus bar handling device is used to transport the intermediate bus bar to the bus bar transfer platform, and the bus bar gripper is used to grab the intermediate bus bar from the bus bar transfer platform and lay the intermediate bus bar on the bus bar welding platform.

3. The busbar welding equipment according to claim 2, wherein: The busbar bending device includes a frame, a first bending mechanism, a second bending mechanism and a third bending mechanism, wherein: The rack is provided with a slide rail; The first bending mechanism and the second bending mechanism are slidably connected to the frame via the slide rails, and the third bending mechanism is fixedly connected to the frame and located between the first bending mechanism and the second bending mechanism; Each of the bending mechanisms includes a supporting platform, a pressing member and a bending member, wherein: the supporting platform is used to support the busbar cut by the first busbar cutting device, the pressing member is used to press the busbar on the supporting platform, and the bending member is used to bend the busbar on the supporting platform upward to form the intermediate busbar.

4. The busbar welding equipment according to claim 1, wherein: The end bus bar feeding device includes a second bus bar pulling device, a second bus bar cutting device, and a second bus bar transporting device, wherein: the second bus bar pulling device is used to pull out the bus bar from the bus bar storage device, the second bus bar cutting device cuts the bus bar pulled out by the second bus bar pulling device to obtain the end bus bar, and the second bus bar transporting device is used to lay the end bus bar on the bus bar welding platform.

5. The busbar welding equipment according to claim 1, wherein: The busbar feeding devices are provided in two groups, and the two groups of busbar feeding devices are provided on opposite sides of the busbar welding platform, wherein: The end bus bar feeding device in the first group of bus bar feeding devices lays the end bus bar on the bus bar welding platform so that the end bus bar overlaps with the head welding ribbon of the first battery string group; The end bus bar feeding device in the second group of bus bar feeding devices lays the end bus bar on the bus bar welding platform so that the end bus bar overlaps with the tail welding ribbon of the second battery string group; The intermediate bus bar feeding device in the first group of bus bar feeding devices and the intermediate bus bar feeding device in the second group of bus bar feeding devices alternately lay the intermediate bus bars on the bus bar welding platform, so that the two ends of the intermediate bus bars overlap with the tail welding strip of the first battery string group and the head welding strip of the second battery string group respectively.

6. The busbar welding equipment according to claim 1, wherein: The first battery string regular welding platform and the second battery string regular welding platform both include a number of regular machines arranged in parallel along a second horizontal direction perpendicular to the first horizontal direction, each of the regular machines is used to carry a string of battery strings, the first battery string group is laid on the first battery string regular welding platform, and the second battery string group is laid on the second battery string regular welding platform.

7. The busbar welding equipment according to claim 6, wherein: The first battery string regular welding platform and the second battery string regular welding platform both include a first guide rail extending along a second horizontal direction, and the regularization machines of the first battery string regular welding platform and the second battery string regular welding platform are both slidably connected to the corresponding first guide rail and can be translated along the first guide rail in the second horizontal direction; The tidying machine includes an adjustment mechanism and a battery string carrier plate, wherein: the battery string carrier plate is connected to the driving end of the adjustment mechanism, and the adjustment mechanism is used to drive the battery string carrier plate to translate in the first horizontal direction and drive the battery string carrier plate to rotate in the horizontal direction.

8. The busbar welding equipment according to claim 7, wherein: The adjustment mechanism includes a first mounting plate, a second mounting plate and a rotation drive mechanism, wherein: The first mounting plate is slidably connected to the first guide rail, and the first mounting plate is provided with a second guide rail extending along the first horizontal direction; The second mounting plate is slidably connected to the second guide rail and can translate along the second guide rail in the first horizontal direction; The rotation drive mechanism is arranged on the second mounting plate, the battery string supporting plate is connected to the driving end of the rotation drive mechanism, and the rotation drive mechanism is used to drive the battery string supporting plate to rotate in the horizontal direction.

9. The busbar welding equipment according to claim 1, wherein: The battery string unloading device includes a battery string regular unloading device and a battery string unloading and transporting device, wherein the battery string regular unloading device is used to adjust the glass plate to a predetermined unloading position, and the battery string unloading and transporting device is used to pick up the welded battery string group from the battery string regular welding platform and transport the picked-up battery string group to the glass plate at the unloading position; The busbar welding equipment also includes a glass plate circulation device, which is arranged between the battery string regular loading device and the battery string regular unloading device. The glass plate circulation device is used to transfer the glass plate located on the battery string regular loading device that is emptied by the battery string loading and handling device to the battery string regular unloading device.

10. The busbar welding equipment according to claim 9, wherein: The battery string regular feeding device and the battery string regular unloading device both include a fixed bracket, a lifting bracket, a conveying mechanism and a blocking and limiting mechanism, wherein: The conveying mechanism is arranged on the lifting bracket, and the conveying mechanism is configured to drive the glass plate to move in translation; The lifting bracket is arranged on the fixed bracket, and the lifting bracket is configured to be lifted and lowered in the vertical direction to drive the glass plate on the conveying mechanism to be lifted and lowered synchronously; The blocking and limiting mechanism is arranged on the lifting bracket and is located on the conveying path of the conveying mechanism. The blocking and limiting mechanism is configured to achieve blocking and limiting of the glass plate.

11. A busbar welding method, characterized in that: The busbar welding method is implemented by the busbar welding equipment according to any one of claims 1 to 10, and includes: The battery string feeding device lays the battery strings to be welded onto the battery string regular welding platform to form the first battery string group and the second battery string group; The battery string regularization welding platform adjusts the first battery string group and the second battery string group to the predetermined welding position; The intermediate bus bar feeding device in the bus bar feeding device provides a bent intermediate bus bar and lays the intermediate bus bar on the bus bar welding platform, so that the two ends of the intermediate bus bar overlap with the tail welding strip of the first battery string group and the head welding strip of the second battery string group, respectively. The end bus bar feeding device in the bus bar feeding device provides an end bus bar and lays the end bus bar on the bus bar welding platform, so that the end bus bar overlaps with the head welding strip of the first battery string group or the tail welding strip of the second battery string group; The busbar welding device welds the middle busbar to the tail welding strip of the first battery string group and the head welding strip of the second battery string group, and welds the end busbar to the head welding strip of the first battery string group or the tail welding strip of the second battery string group; The battery string unloading device unloads and loads the welded battery string groups from the battery string regular welding platform.

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