Battery stringing equipment

Abstract

The utility model provides battery string forming equipment which comprises a series connection conveying line, a carrying device, a welding strip arranging device and a series connection device, a battery piece placing position, a temporary storage position and a welding strip placing position are arranged on a conveying path of the series connection conveying line, and the series connection conveying line is configured to convey battery pieces in a stepping mode. When the ith battery piece is stepped to the solder strip placement position, the solder strip arrangement device drags the ith solder strip group to the ith battery piece, and the tail end of the ith solder strip group is put on the connecting strip on the (i + 1) th battery piece at the cache position; the carrying device places the ith hold-down tool on the ith welding strip group and places the (i + 2) th battery piece at the battery piece placing position, and the hold-down tools are used for tightly pressing the welding strip groups on the corresponding battery pieces; and the series connection device fixes the welding strip group to the corresponding battery piece. According to the invention, automatic bunching of the battery pieces with the solder strips on the first surfaces is realized, and the bunching efficiency of the battery pieces is improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cell production, specifically a cell stringing device. Background Technology

[0002] like Figure 1 As shown, in existing battery strings, adjacent battery cells 500 are connected in series by continuous long solder ribbons 200. The front portion of the long solder ribbons 200 is connected to the back of the front battery cell 500, while the rear portion is connected to the front of the rear battery cell 500. During the stringing process, the battery cells 500 and the long solder ribbons 200 are alternately stacked on the welding conveyor line, and then the long solder ribbons 200 are fixed to the front and / or back of the corresponding battery cell by a stringing device.

[0003] like Figure 2 As shown, a new type of solar cell 100 has emerged in the industry, on which a set of solder ribbons 101 are pre-welded onto a first surface (e.g., the back side). These solder ribbons 101 extend outwards from the solar cell 100 and are interconnected by a connecting strip 102, such as a conductive copper strip. For this type of solar cell 100, during subsequent stringing, the solder ribbon group (approximately half the length of the long solder ribbon group 200) needs to be soldered to the second surface of the solar cell 100, with the tail end of the solder ribbon group connected to the connecting strip 102 on the adjacent solar cell. Existing battery stringing methods struggle to implement automated stringing for this type of solar cell. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a battery stringing device, the detailed technical solution of which is as follows:

[0005] A battery stringing device is used to string together N battery cells with a set of solder strips on their first surface to form a battery string. All solder strips on the first surface of the battery cells extend outward and are interconnected by a connecting strip. The battery stringing device includes a stringing conveyor line, a handling device, a solder strip application device, and a stringing device, wherein:

[0006] The tandem conveyor line has continuous cell placement positions, buffer positions and solder strip placement positions on its conveying path. The tandem conveyor line is configured to step-convey cells with the first surface facing down, so that the cells located at the cell placement positions step sequentially to the buffer positions and solder strip placement positions.

[0007] When the i th battery piece steps to the solder strip placement position, the solder strip placement device is configured to pull the i th solder strip group to the i th battery piece at the solder strip placement position, and make the tail end of the i th solder strip group rest on the connecting strip of the i+1 th battery piece at the buffer position; the carrying device is configured to place the i th pressing tool on the i th solder strip group, and place the i+2 th battery piece with the first surface downward at the battery piece placement position, the pressing tool being used to press the solder strip group on the corresponding battery piece; wherein, ;

[0008] The stringing device is arranged at the rear of the solder strip placement position, and is configured to fix the solder strip group on the corresponding battery piece.

[0009] By using the battery stringing equipment provided in the application, in the stringing process, the stringing conveying line sequentially steps the battery pieces to the solder strip placement position, and the solder strip placement device pulls the solder strip group to the battery piece at the solder strip placement position, and makes the tail end of the solder strip group rest on the connecting strip of the battery piece at the buffer position, so as to complete the laying and stringing of the battery piece and the solder strip group. In addition, in the laying and stringing process, the pressing tool is placed on the solder strip group by the carrying device to realize the pressing and positioning of the solder strip group, and finally ensure the stringing quality of the battery piece.

[0010] The battery stringing equipment provided in the application realizes the automatic stringing of the battery piece with the solder strip on the first surface, improves the stringing efficiency of the battery piece, and ensures the stringing quality.

[0011] In some embodiments, the carrying device comprises a first driving mechanism, a first mounting bracket, a first suction assembly and a second suction assembly, wherein: the first mounting bracket is connected to the driving end of the first driving mechanism; the first suction assembly and the second suction assembly are arranged side by side and spaced apart on the first mounting bracket; the first driving mechanism is at least configured to drive the first mounting bracket to translate and lift, so as to drive the first suction assembly to suck the battery piece, and place the sucked battery piece with the first surface downward at the battery piece placement position; and drive the second suction assembly to suck the pressing tool, and place the sucked pressing tool on the solder strip group at the solder strip placement position, so as to press the solder strip group on the corresponding battery piece; the distance between the first suction assembly and the second suction assembly is not less than the length of one battery piece in the conveying direction of the stringing conveying line.

[0012] By setting the carrying device to include the first suction assembly and the second suction assembly, the carrying device can suck the battery piece and place the sucked battery piece to the battery piece placement position, and can also suck the pressing tool and place the sucked pressing tool to the ribbon group at the ribbon placement position. In particular, by setting the distance between the first suction assembly and the second suction assembly to be not less than the length of one battery piece in the conveying direction of the stringing conveying line, the carrying device can simultaneously place the sucked battery piece and the sucked pressing tool to the battery piece placement position and the ribbon group at the ribbon placement position respectively, thereby improving the stringing efficiency.

[0013] In some embodiments, the distance between the first suction assembly and the second suction assembly is configured to be adjustable, and at least one of the first suction assembly and the second suction assembly is adjustably arranged on the first mounting bracket through the waist-shaped hole position.

[0014] During the stringing process, the distance between the first suction assembly and the second suction assembly can be adaptively adjusted according to the actual size of the battery piece, to ensure that the second suction assembly can synchronously place the sucked tool to the ribbon group at the ribbon placement position when the first suction assembly places the sucked battery piece to the battery piece placement position.

[0015] In some embodiments, the battery stringing device further includes a ribbon supply device arranged at the front side of the input end of the stringing conveying line, the ribbon supply device is configured to cut a plurality of ribbons from a ribbon roll to obtain a ribbon group with a predetermined length; and the ribbon arranging device is configured to obtain the ribbon group from the ribbon supply device and place the ribbon group on the battery piece at the ribbon placement position.

[0016] By arranging the ribbon supply device at the front side of the input end of the stringing conveying line, automatic preparation and supply of the ribbon group are realized, and the ribbon arranging device can obtain the required ribbon group for stringing nearby, thereby improving the stringing efficiency.

[0017] In some embodiments, the battery stringing device further includes a magazine conveying device, a piece picking device and a feeding conveying line, wherein: the magazine conveying device is configured to convey a magazine full of battery pieces to a piece picking position; the piece picking device is configured to pick a battery piece from the magazine at the piece picking position and place the battery piece with the first surface downward on the feeding conveying line; and the feeding conveying line is configured to convey the battery piece to the side of the battery piece placement position, and the carrying device is configured to pick the battery piece from the feeding conveying line.

[0018] Through the cooperation of the magazine conveying device, the piece picking device and the feeding conveying line, automatic feeding of the battery piece is realized, so that the carrying device can obtain the required battery piece for stringing nearby, thereby improving the stringing efficiency.

[0019] In some embodiments, the cartridge conveying device comprises a first conveying line, a second conveying line and a transfer conveying line, wherein: the first conveying line is arranged above the second conveying line, and the conveying direction of the first conveying line is opposite to that of the second conveying line; the transfer conveying line is configured to ascend and descend between the output end of the first conveying line and the input end of the second conveying line, and is connected to the output end of the first conveying line or the input end of the second conveying line; the first conveying line is configured to convey the cartridge filled with battery pieces to the piece taking position, and convey the empty cartridge to the transfer conveying line connected to the output end of the first conveying line; the transfer conveying line is configured to convey the empty cartridge to the second conveying line when connected to the input end of the second conveying line; and the second conveying line is configured to output the empty cartridge.

[0020] Through the conveying of the first conveying line, the cartridge filled with battery pieces can be automatically conveyed to the piece taking position. Through the cooperation of the transfer conveying line and the second conveying line, the empty cartridge can be output from the piece taking position in time. In this way, the next cartridge filled with battery pieces can be ensured to enter the piece taking position in time, preventing the shortage of battery pieces.

[0021] In some embodiments, the piece taking device comprises a second driving mechanism, a second mounting bracket and at least one third suction assembly, wherein: the second mounting bracket is connected to the driving end of the second driving mechanism; the third suction assembly is arranged on the second mounting bracket; and the second driving mechanism is configured to drive the second mounting bracket to translate and ascend and descend, so as to drive the third suction assembly to suck the battery pieces from the cartridge and place the sucked battery pieces on the feeding conveying line.

[0022] A piece taking device with simple structure is provided, which drives the third suction assembly to move through the second driving mechanism, so as to drive the third suction assembly to suck the battery pieces from the cartridge and place the sucked battery pieces on the feeding conveying line. Through the arrangement of multiple third suction assemblies, the piece taking device can suck multiple battery pieces from the cartridge and place the multiple battery pieces on the feeding conveying line at the same time, thereby improving the battery piece feeding efficiency.

[0023] In some embodiments, the third suction assembly comprises a suction assembly and a pressing unit, wherein: the suction assembly and the pressing unit are both connected to the second mounting bracket; the suction assembly is configured to adsorb the battery pieces; and when the suction assembly places the battery pieces on the feeding conveying line, the pressing unit is configured to press the middle part of the battery pieces downward to flatten the battery pieces.

[0024] Since the first surface of the battery piece is previously provided with a group of welding strips, the middle part of the second surface of the battery piece is prone to arch upward under the pulling of the welding strips, resulting in the reduction of the flatness of the battery piece. By setting the third suction assembly to include the suction assembly and the pressing unit, when the third suction assembly places the battery piece to the feeding conveying line through the suction assembly, the pressing unit can press the middle part of the battery piece downward, thereby implementing the flattening of the battery piece and improving the flatness of the battery piece.

[0025] In some embodiments, the battery stringing device further comprises a pressing tool conveying line and a pressing tool removing device, wherein: the pressing tool conveying line is configured to convey the pressing tools to the side of the welding strip placing position; the carrying device is configured to pick up the pressing tools from the pressing tool conveying line; the pressing tool removing device is arranged at the rear of the stringing device, and is configured to place the pressing tools on the welding strip group back to the pressing tool conveying line after the welding strip group is fixed to the corresponding battery piece.

[0026] By setting the pressing tool conveying line, the pressing tools are automatically conveyed to the side of the welding strip placing position, so that the carrying device can pick up the pressing tools nearby. By setting the pressing tool removing device, the pressing tools can be automatically placed back to the pressing tool conveying line after the welding strip group is fixed to the corresponding battery piece, so as to realize the recycling use of the pressing tools.

[0027] In some embodiments, the battery stringing device further comprises a first welding strip guiding device located at the welding strip placing position; the first welding strip guiding device at least comprises a first guiding plate located above the junction of the buffer position and the welding strip placing position, and has a first gap between the conveying surface of the stringing conveying line and the first guiding plate for the battery piece to pass through; when the welding strip laying device pulls the welding strip group towards the welding strip placing position, the first guiding plate is configured to guide the welding strip group, and a plurality of first guiding grooves are arranged on the first guiding plate, each of which is used to accommodate one of the welding strips in the welding strip group.

[0028] Through the guidance of the first guiding plate, it is ensured that the welding strip laying device can accurately pull and lay the welding strip group to the target position on the battery piece at the welding strip placing position, preventing the position deviation of the welding strip group.

[0029] In some embodiments, the first guide plate is configured to be movable parallel to the conveying path of the series conveying line to switch between a guiding position close to the solder ribbon placement position and a avoiding position away from the solder ribbon placement position; the first solder ribbon guiding device further comprises a first support plate and a second support plate located on both sides of the solder ribbon placement position, and the first support plate and the second support plate are configured to be synchronously switched between a supporting position and a releasing position by lifting, wherein the supporting position is higher than the releasing position; after the solder ribbon arrangement device drags the solder ribbon group to the battery piece at the solder ribbon placement position, the tail end of the solder ribbon group is supported on the first guide plate at the guiding position; when the first support plate and the second support plate are lifted to the supporting position, the two side end plates of the pressing tool placed on the solder ribbon group by the carrying device are supported respectively, so that the first type of pressing needles at both ends of the pressing tool do not contact the solder ribbon group, and the second type of pressing needles at the middle part of the pressing tool press the solder ribbon group tightly to the battery piece, wherein in the non-pressing state, the bottom surface of the first type of pressing needles is higher than the bottom surface of the second type of pressing needles; when the solder ribbon arrangement device releases the head end of the solder ribbon group, the first guide plate is configured to move to the avoiding position to release the tail end of the solder ribbon group, and the first support plate and the second support plate are configured to be synchronously lowered to the releasing position, so that the first type of pressing needles at both ends of the pressing tool press the tail end and the head end of the solder ribbon group to the battery piece respectively.

[0030] After the solder ribbon group is dragged to the battery piece at the solder ribbon placement position, the tail end of the solder ribbon group is supported on the first guide plate at the guiding position, and the head end is kept clamped by the solder ribbon arrangement device. When the carrying device places the pressing tool on the solder ribbon group, the first support plate and the second support plate at the supporting position support the two side end plates of the pressing tool to be raised, so that the first type of pressing needles at both ends of the pressing tool do not contact the solder ribbon group, and the second type of pressing needles at the middle part of the pressing tool press the solder ribbon group tightly to the battery piece. When the solder ribbon arrangement device releases the head end of the solder ribbon group and the first guide plate releases the tail end of the solder ribbon group, the first support plate and the second support plate are synchronously lowered to the releasing position, so that the first type of pressing needles at both ends of the pressing tool press the tail end and the head end of the solder ribbon group downward respectively.

[0031] In this way, the two ends of the solder ribbon group that are bent upward can be prevented from being pressed by the pressing tool.

[0032] In some embodiments, the first solder ribbon guiding device further comprises a first support arm, a second support arm, a first lifting assembly, a second lifting assembly, a first elastic pressing assembly, a second elastic pressing assembly and a third driving mechanism, wherein:

[0033] The first support arm and the second support arm are oppositely arranged on both sides of the series conveying line, and are both in driving connection with the third driving mechanism; the two ends of the first guide plate are connected to the first support arm and the second support arm respectively, and the first support arm and the second support arm are sequentially provided with a first support surface and a second support surface in a direction away from the first guide plate, wherein the first support surface is higher than the second support surface;

[0034] The third driving mechanism is configured to drive the first support arm and the second support arm to move parallel to the conveying path of the serial conveying line, so as to drive the first guide plate to switch between the guiding position and the avoiding position;

[0035] The first lifting assembly is slidably connected to the first side wall of the serial conveying line, the second lifting assembly is slidably connected to the second side wall of the serial conveying line, the first support plate is connected to the first lifting assembly, and the second support plate is connected to the second lifting assembly;

[0036] The first elastic pressing assembly is connected to the first side wall of the serial conveying line, and the second elastic pressing assembly is connected to the second side wall of the serial conveying line;

[0037] When the first guide plate moves to the guiding position, the first elastic pressing assembly is configured to elastically press the first lifting assembly against the first support surface of the first support arm, the second elastic pressing assembly is configured to elastically press the second lifting assembly against the first support surface of the second support arm, and the first support plate and the second support plate are located at the supporting position;

[0038] When the first guide plate moves to the avoiding position, the first elastic pressing assembly is configured to elastically press the first lifting assembly against the second support surface of the first support arm, the second elastic pressing assembly is configured to elastically press the second lifting assembly against the second support surface of the second support arm, and the first support plate and the second support plate are located at the releasing position.

[0039] By setting the first welding strip guide device, linkage of the first support plate, the second support plate and the first guide plate is realized. Specifically, when the third driving mechanism drives the first guide plate to the guiding position through the first support arm and the second support arm, the first lifting assembly and the second lifting assembly are lifted under the jacking of the first support arm and the second support arm, so that the first support plate and the second support plate are lifted to the supporting position. When the third driving mechanism drives the first guide plate to the avoiding position through the first support arm and the second support arm, the first lifting assembly and the second lifting assembly are lowered under the pushing of the first elastic pressing assembly and the second elastic pressing assembly, so that the first support plate and the second support plate are lowered to the releasing position. In this way, only one driving mechanism needs to be set to implement synchronous driving of the first guide plate, the first support plate and the second support plate, thereby reducing the driving cost. In addition, the action synchronization degree of the first guide plate and the first support plate and the second support plate is improved, so that the first guide plate is switched to the guiding position at the same time as the first support plate and the second support plate are switched to the supporting position, and the first guide plate is switched to the avoiding position at the same time as the first support plate and the second support plate are switched to the releasing position.

[0040] In some embodiments, the second lifting assembly has the same structure as the first lifting assembly, and the second elastic pressing assembly has the same structure as the first elastic pressing assembly; the first lifting assembly comprises a sliding block and a roller, wherein the sliding block is connected to the first side wall of the serial conveying line in a vertically-slidable manner through a vertical sliding rail, the roller is arranged on the sliding block and supported on the first support arm, and the first support plate is connected to the top of the sliding block; the first elastic pressing assembly comprises a pressing block and a spring, wherein the pressing block is fixed to the first side wall of the serial conveying line and located above the roller, the upper end of the spring is abutted against the pressing block, and the lower end of the spring is abutted against the sliding block; when the first guide plate moves from the avoiding position to the guiding position, the roller slides from the second support surface of the first support arm to the first support surface of the first support arm, the sliding block slides upward, the first support plate rises to the supporting position, and the spring is compressed under pressure; when the first guide plate moves from the guiding position to the avoiding position, the roller slides from the first support surface of the first support arm to the second support surface of the first support arm, the spring rebounds under pressure loss, pushes the sliding block to slide downward, and the first support plate descends to the releasing position.

[0041] The first lifting assembly and the second lifting assembly are arranged in a lifting structure composed of a sliding block and a roller, so that the first lifting assembly and the second lifting assembly can smoothly slide up and down relative to the serial conveying line and smoothly slide horizontally along the support surfaces of the first support arm and the second support arm, avoiding jamming and affecting the support stability of the first support plate and the second support plate.

[0042] In some embodiments, the battery string device further comprises a second welding strip guiding device, the second welding strip guiding device comprising a second guide plate and a fourth driving mechanism, wherein: the second guide plate is located above the serial conveying line and in front of the first guide plate, and has a second gap between the second guide plate and the conveying surface of the serial conveying line for the battery piece to pass through; the second guide plate is drivingly connected with the fourth driving mechanism, and the fourth driving mechanism is configured to drive the second guide plate to move parallel to the conveying path of the serial conveying line, so that the second guide plate moves between the first intersection position away from the first guide plate and the second intersection position close to the first guide plate; when the second guide plate moves to the first intersection position, the welding strip group pulled by the welding strip arranging device falls onto the second guide plate; when the second guide plate moves to the second intersection position, the welding strip group transitions to the first guide plate under the traction of the welding strip arranging device; the second guide plate is provided with a plurality of second guide grooves, and each second guide groove is used for accommodating one welding strip in the welding strip group.

[0043] By arranging the second guide plate driven by the fourth driving mechanism, when the welding strip arranging device pulls the welding strip group towards the first guide plate, the second guide plate can move towards the first guide plate synchronously with the welding strip arranging device to support the welding strip group from below, so as to realize the guiding and positioning of the welding strip group, and finally ensure that each welding strip in the welding strip group can accurately enter into the corresponding first guide groove on the first guide plate.

[0044] In some embodiments, the second solder strip guiding device further comprises a third support arm and a fourth support arm, wherein: the third support arm and the fourth support arm are oppositely arranged on both sides of the series connection conveying line, and are both in transmission connection with the fourth driving mechanism; the two ends of the second guiding plate are respectively connected to the third support arm and the fourth support arm; and the fourth driving mechanism is configured to drive the third support arm and the fourth support arm to move parallel to the conveying path of the series connection conveying line, so as to drive the second guiding plate to move and switch between the first transfer position and the second transfer position.

[0045] The two ends of the second guiding plate are respectively connected to the third support arm and the fourth support arm, and the third support arm and the fourth support arm are driven by the fourth driving mechanism to move parallel to the conveying path of the series connection conveying line, so as to drive the second guiding plate to move and switch between the first transfer position and the second transfer position, so that the second guiding plate remains in a stable horizontal state, and the guiding effect of the second guiding plate on the solder strip group is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 A structural schematic diagram of an existing battery string;

[0047] Figure 2 A structural schematic diagram of a battery piece with a solder strip fixed on a first surface;

[0048] Figure 3 A structural schematic diagram of a battery stringing device in the embodiment of the present application;

[0049] Figure 4 A schematic diagram of a battery stringing process of the battery stringing device in the embodiment of the present application;

[0050] Figure 5 A structural schematic diagram of a carrying device in the embodiment of the present application;

[0051] Figure 6 A structural schematic diagram of a piece taking device in the embodiment of the present application;

[0052] Figure 7 A structural schematic diagram of a press removing device in the embodiment of the present application;

[0053] Figure 8 A top view structural schematic diagram of a first solder strip guiding device in the embodiment of the present application;

[0054] Figure 9 A schematic diagram of the support effect of the first solder strip guiding device on the press in the embodiment of the present application;

[0055] Figure 10 A bottom view structural schematic diagram of the first solder strip guiding device in the embodiment of the present application;

[0056] Figure 11 A structural schematic view of the second solder strip guiding device in the embodiment of the present application and the first solder strip guiding device

[0057] Figure 12 An assembly schematic view of the second solder strip guiding device, the first solder strip guiding device and the series connection conveying line in the embodiment of the present application;

[0058] Figure 13 A structural schematic view of the solder strip arranging device in the embodiment of the present application;

[0059] Figure 14 A sectional view of the press used in the embodiment of the present application;

[0060] Figure 15 A schematic view of the cooperation working process of the first guiding plate and the second guiding plate in the embodiment of the present application.

[0061] Figures 1 to 15 The embodiment of the present application comprises:

[0062] The series connection conveying line 1;

[0063] The carrying device 2:

[0064] The first mounting bracket 21, the first suction assembly 22, the second suction assembly 23;

[0065] The solder strip arranging device 3:

[0066] The translation driving part 31, the lifting driving part 32, the clamping part 33;

[0067] The series connection device 4;

[0068] The solder strip supplying device 5;

[0069] The magazine conveying device 6:

[0070] The first conveying line 61, the second conveying line 62, the transfer conveying line 63;

[0071] The sheet taking device 7:

[0072] The second driving mechanism 71, the second mounting bracket 72, the third suction assembly 73, the suction assembly 731, the pressing unit 732, the air cylinder 7321, the pressing plate 7322;

[0073] The feeding conveying line 8;

[0074] The press conveying line 9;

[0075] The press removing device 10:

[0076] The fifth driving mechanism 1001, the fourth suction assembly 1002;

[0077] The first solder strip guiding device 110:

[0078] The first guiding plate 111, the first supporting plate 112, the second supporting plate 113, the first supporting arm 114, the second supporting arm 115, the first lifting assembly 116, the second lifting assembly 117, the first elastic pressing assembly 118, the second elastic pressing assembly 119, the third driving mechanism 1120, the mounting block 1130, the first supporting surface a, the second supporting surface b, the first guiding groove 1111, the sliding block 1161, the roller 1162, the first translation driving module 1121, the first connecting plate 1122;

[0079] The second solder strip guiding device 120:

[0080] The second guiding plate 121, the fourth driving mechanism 122, the third supporting arm 123, the fourth supporting arm 124, the second translation driving module 1221, the second connecting plate 1222, the second guiding groove 1211;

[0081] The battery piece placement position A, the buffer position B, the solder strip placement position C;

[0082] The battery piece 100, the solder strip 101, the connecting strip 102, the long solder strip group 200, the solder strip group 400;

[0083] The pressing tool 300: the first type of pressing needle 301, the second type of pressing needle 302. DETAILED DESCRIPTION

[0084] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0085] As described in the background section, for the battery piece with a group of solder strips pre-welded on the first surface (e.g. the back surface), in the subsequent stringing process, the solder strip group needs to be welded to the second surface of the battery piece, and the tail end of the solder strip group needs to be connected to the connecting strip on the adjacent battery piece. The existing battery stringing method is difficult to implement automatic stringing of this type of battery piece.

[0086] In view of this, the present application provides a battery stringing device for stringing Figure 2 The battery piece 100 with a group of solder strips 101 on the N first surfaces shown in the figure is stringed into a battery string, and all the solder strips 101 on the first surface of the battery piece 100 extend outward and are interconnected by a connecting strip 102.

[0087] As Figures 3 to 4As shown, the battery stringing device of the present application comprises a stringing conveying line 1, a carrying device 2, a strip laying device 3 and a stringing device 4, wherein:

[0088] The conveying path of the stringing conveying line 1 is provided with continuous battery piece placing positions A, buffer positions B and strip placing positions C, and the stringing conveying line 1 is configured to step convey the first surface-down battery pieces 100 so that the battery pieces at the battery piece placing positions A are sequentially stepped to the buffer positions B and the strip placing positions C.

[0089] When the i-th battery piece 100 is stepped to the strip placing position C, the strip laying device 3 is configured to pull the i-th strip group 400 to the i-th battery piece 100 at the strip placing position C, and make the tail end of the i-th strip group 400 rest on the connecting strip 102 of the i+1-th battery piece 100 at the buffer position B. The carrying device 2 is configured to place the i-th pressing tool 300 on the i-th strip group 400, and place the i+2-th battery piece 100 with the first surface facing down at the battery piece placing position A, and the pressing tool 300 is used to press the strip group 400 on the corresponding battery piece 100; wherein, .

[0090] The stringing device 4 is arranged behind the strip placing position C, and is configured to fix the strip group 400 to the corresponding battery piece 100.

[0091] In order to enable those skilled in the art to more clearly understand the working process of the battery stringing device in the embodiments of the present application, the following will be described in combination with Figure 4 Taking N=4 as an example (i.e. the battery to be obtained is composed of 4 battery pieces 100), the laying process of the battery piece, the strip group and the pressing tool in the embodiments of the present application will be described exemplarily.

[0092] As shown in (a) of FIG. 1, Figure 4 The carrying device 2 lays the first battery piece 100 with the first surface facing down at the battery piece placing position A.

[0093] As shown in (b) of FIG. 1, Figure 4 The stringing conveying line 1 is controlled to step convey once, so that the first battery piece 100 is stepped forward to the buffer position B, and the battery piece placing position A is emptied. Subsequently, the carrying device 2 lays the second battery piece 100 with the first surface facing down at the battery piece placing position A.

[0094] As shown in (c) of FIG. 1, Figure 4As shown in (c), the control series conveyor line 1 steps forward once, causing the second solar cell 100 to move forward to the buffer position B, and the first solar cell 100 to move forward to the ribbon placement position C, freeing up the solar cell placement position A. Subsequently, the ribbon placement device 3 pulls the first ribbon group 400 onto the first solar cell 100 located at the ribbon placement position C, and causes the tail end of the first ribbon group 400 to be placed on the connecting strip 102 on the second solar cell 100 located at the buffer position B.

[0095] like Figure 4 As shown in (d), the conveying device 2 places the first presser 300 onto the first ribbon group 400 and places the third cell 100 with its first surface facing down at cell placement position A. The presser 300 is used to press the first ribbon group 400 onto the first cell 100.

[0096] like Figure 4 As shown in (e), the control series conveyor line 1 steps forward once, causing the third solar cell 100 to move forward to the buffer position B, and the second solar cell 100 to move forward to the ribbon placement position C, freeing up the solar cell placement position A. Subsequently, the ribbon placement device 3 pulls the second ribbon group 400 onto the second solar cell 100 located at the ribbon placement position C, and causes the tail end of the second ribbon group 400 to drape over the connecting strip 102 on the third solar cell 100 located at the buffer position B.

[0097] like Figure 4 As shown in (f), the transport device 2 places the second presser 300 onto the second ribbon group 400 and places the fourth cell 100 with its first surface facing down at cell placement position A. The presser 300 is used to press the second ribbon group 400 onto the second cell 100.

[0098] like Figure 4 As shown in (g), the control series conveyor line 1 steps forward once, causing the fourth solar cell 100 to move forward to the buffer position B, and the third solar cell 100 to move forward to the ribbon placement position C, freeing up the solar cell placement position A. Subsequently, the ribbon placement device 3 pulls the third ribbon group 400 onto the third solar cell 100 located at the ribbon placement position C, and causes the tail end of the third ribbon group 400 to be placed on the connecting strip 102 on the fourth solar cell 100 located at the buffer position B.

[0099] like Figure 4 As shown in (h), the conveying device 2 places the third presser 300 onto the third ribbon group 400, and the presser 300 is used to press the third ribbon group 400 onto the third cell 100.

[0100] likeFigure 4 As shown in (i), the control series conveyor line 1 steps forward once, causing the fourth solar cell 100 to move forward to the ribbon placement position C. Subsequently, the ribbon laying device 3 pulls the fourth ribbon group 400 onto the fourth solar cell 100 located at the ribbon placement position C, and the transport device 2 places the fourth clamp 300 onto the fourth ribbon group 400. The clamp 300 is used to press the fourth ribbon group 400 onto the fourth solar cell 100.

[0101] This completes the installation of the four 100 solar cells in a string.

[0102] Finally, the welding ribbon group 400 is fixed to the corresponding battery cell 100 by the series connection device 4.

[0103] Using the battery stringing equipment provided in this application, during the stringing process, the stringing conveyor line 1 sequentially transports the battery cells 100 to the ribbon placement position C. The ribbon placement device 3 then pulls the ribbon assembly 400 onto the battery cells 100 at the ribbon placement position C, and places the tail end of the ribbon assembly 400 onto the connecting strip 102 of the battery cells 100 at the buffer position B, thereby completing the stringing of the battery cells 100 and the ribbon assembly 400. Furthermore, during the stringing process, the handling device 2 places the pressure fixture 300 onto the ribbon assembly 400 to press and position it, thus ensuring the stringing quality.

[0104] The battery stringing equipment provided in this application enables automatic stringing of battery cells 100 with solder ribbons on the first surface, improving the stringing efficiency of this type of battery cell 100 and ensuring the stringing quality.

[0105] like Figure 5 As shown, optionally, the conveying device 2 includes a first drive mechanism (not shown), a first mounting bracket 21, a first suction assembly 22, and a second suction assembly 23, wherein: the first mounting bracket 21 is connected to the drive end of the first drive mechanism. The first suction assembly 22 and the second suction assembly 23 are arranged side-by-side at a distance from each other on the first mounting bracket 21. The first drive mechanism is at least configured to drive the first mounting bracket 21 to translate and lift, so as to drive the first suction assembly 22 to pick up the battery cell 100 and place the picked-up battery cell 100 with its first surface facing down to the battery cell placement position A, and to drive the second suction assembly 23 to pick up the pressure fixture 300 and place the picked-up pressure fixture 300 onto the solder ribbon group 400 located at the solder ribbon placement position C, so as to press the solder ribbon group 400 onto the corresponding battery cell 100. The distance between the first suction assembly 22 and the second suction assembly 23 is not less than the length of one battery cell 100 in the conveying direction of the serial conveyor line 1.

[0106] Specifically, under the driving of the first driving mechanism, the first suction assembly 22 and the second suction assembly 23 respectively suck one battery piece 100 to be placed and one pressing tool 300 to be placed. Subsequently, under the driving of the first driving mechanism, the first suction assembly 22 places the sucked battery piece 100 at the battery piece placing position A, and the second suction assembly 23 places the sucked pressing tool 300 on the wire harness group 400 at the wire harness placing position C.

[0107] Specifically, by setting the distance between the first suction assembly 22 and the second suction assembly 23 to be not less than the length of one battery piece 100 in the conveying direction of the series conveying line 1, the first suction assembly 22 and the second suction assembly 23 can simultaneously place the sucked battery piece 100 and the sucked pressing tool 300 at the battery piece placing position A and the wire harness group 400 at the wire harness placing position C, thereby improving the battery stringing efficiency.

[0108] The first driving mechanism can adopt various existing driving devices capable of driving the first mounting bracket 21 to translate and lift. For example, the first driving mechanism is a robot arm, the first mounting bracket 21 is connected to the end of the robot arm, and the robot arm drives the first mounting bracket 21 to translate and lift. For another example, the first driving mechanism includes a first translation driving part and a first lifting driving part, the first lifting driving part is connected to the driving end of the first translation driving part, and the first mounting bracket 21 is connected to the driving end of the first lifting driving part. The first translation driving part is used to drive the first mounting bracket 21 to translate, and the first lifting driving part is used to drive the first mounting bracket 21 to lift. The first translation driving part and the first lifting driving part can both adopt various types of linear driving modules, such as linear motor modules, ball screw modules, etc.

[0109] The first suction assembly 22 is, for example, a suction disc assembly composed of a plurality of suction discs. Since the material of the conventional pressing tool 300 is generally a magnetically attracted metal (for example, stainless steel), the second suction assembly 23 can adopt an electromagnet assembly.

[0110] Optionally, the distance between the first suction component 22 and the second suction component 23 is configured to be adjustable. For example, at least one of the first suction component 22 and the second suction component 23 is finely positioned on the first mounting bracket 21 via a slotted hole. For example, the first suction component 22 and the second suction component 23 are arranged side by side on the first mounting bracket 21 along a first direction. The first suction component 22 has a slotted hole extending along the first direction, and the first mounting bracket 21 has a screw hole corresponding to the slotted hole. The first suction component 22 is screwed onto the first mounting bracket 21 with bolts passing through the slotted hole and the screw hole. When it is necessary to adjust the distance between the first suction component 22 and the second suction component 23, first loosen the bolt, then push the first suction component 22 toward or away from the second suction component 23. After the first suction component 22 is adjusted to the correct position, tighten the bolt again.

[0111] Since the distance between the first suction component 22 and the second suction component 23 can be finely adjusted, in actual production, the distance between the first suction component 22 and the second suction component 23 can be adaptively adjusted according to the actual size of the battery cell 100, so as to ensure that when the first suction component 22 places the suctioned battery cell to the battery cell placement position A, the second suction component 23 can simultaneously place the suctioned clamp 300 onto the welding strip group 400 located at the welding strip placement position C.

[0112] like Figure 3 As shown, optionally, the battery stringing device in this embodiment further includes a solder ribbon supply device 5 disposed on the front side of the input end of the stringing conveyor line 1. The solder ribbon supply device 5 is configured to cut several strands of solder ribbon released from the solder ribbon roll to obtain a solder ribbon group 400 with a predetermined length. The solder ribbon placement device 3 is configured to obtain the solder ribbon group 400 from the solder ribbon supply device 5 and place the solder ribbon group 400 onto the battery cell 100 at the solder ribbon placement position C.

[0113] By setting a welding strip supply device 5 at the front of the input end of the serial conveyor line 1, the automatic preparation and supply of welding strip groups is realized, and the welding strip distribution device 3 can obtain the welding strip group 400 required for stringing nearby, thereby improving the stringing efficiency.

[0114] Optionally, the welding strip supply device 5 comprises a winding-off part, a pressing part and a cutting part arranged in sequence along the conveying direction of the conveying line 1, wherein the winding-off part is configured to mount a welding strip roll, and drive the welding strip roll to rotate to release a plurality of welding strips, the free ends of the welding strips pass through the pressing part and then enter the cutting part, the pressing part presses the welding strips so that the free ends of the welding strips are kept in the cutting part. The welding strip arrangement device 3 first clamps the free ends of the welding strips from the cutting part, and then the pressing part releases the welding strips. Then, the welding strip arrangement device 3 pulls the welding strips towards the welding strip placement position C, when the welding strips of a predetermined length pass through the cutting part, the pressing part presses the welding strips again, the cutting part cuts the welding strips, and the welding strip arrangement device 3 obtains a welding strip group 400. Since the welding strip supply device 5 is an existing device, the specific structure thereof will not be described in detail here.

[0115] As shown in Figure 3 Optionally, the battery stringing device in the embodiment of the application further comprises a box conveying device 6, a piece taking device 7 and a feeding conveying line 8, wherein: the box conveying device 6 is configured to convey the box filled with the battery pieces 100 to a piece taking position. The piece taking device 7 is configured to pick up the battery pieces 100 from the box at the piece taking position, and place the battery pieces 100 on the feeding conveying line 8 with the first surfaces of the battery pieces 100 facing downwards. The feeding conveying line 8 is configured to convey the battery pieces 100 to the side of the battery piece placement position A, and the carrying device 2 is configured to pick up the battery pieces 100 from the feeding conveying line 8.

[0116] It can be seen that through the cooperation of the box conveying device 6, the piece taking device 7 and the feeding conveying line 8, the application realizes automatic feeding of the battery pieces 100, so that the carrying device 2 can obtain the battery pieces 100 required for stringing nearby, thereby improving the stringing efficiency.

[0117] As shown in Figure 3 Optionally, the box conveying device 6 comprises a first conveying line 61, a second conveying line 62 and a transfer conveying line 64, wherein: the first conveying line 61 is arranged above the second conveying line 62, and the conveying directions of the first conveying line 61 and the second conveying line 62 are opposite, for example, the first conveying line 61 conveys towards the piece taking device 7, and the second conveying line 62 conveys away from the piece taking device 7.

[0118] The transfer conveyor line 63 is configured to move up and down between the output end of the first conveyor line 61 and the input end of the second conveyor line 62, and can alternately dock with either the output end of the first conveyor line 61 or the input end of the second conveyor line 62. The first conveyor line 61 is configured to convey boxes filled with solar cells 100 to the cell picking position, and to convey empty boxes to the transfer conveyor line 63 docked with the output end of the first conveyor line 61. The transfer conveyor line 63 is configured to convey empty boxes to the second conveyor line 62 when docked with the input end of the second conveyor line 62. The second conveyor line 62 is used to output the empty boxes.

[0119] The optional operating process of the material box conveying device 6 is as follows:

[0120] The first conveyor line 61 transports the cassette filled with battery cells 100 to the cell picking position.

[0121] After the cell picking device 7 empties the cell picking box at the picking position, the transfer conveyor line 63 rises to a high position and connects with the output end of the first conveyor line 61. The first conveyor line 61 then transports the emptied cell picking box to the transfer conveyor line 63. At this time, the picking position becomes available, and the first conveyor line 61 can transport a new cell picking box filled with cell 100 to the picking position, allowing the picking device 7 to continue picking up cell 100 from the picking position.

[0122] The transfer conveyor line 63 descends to its low position and connects with the input end of the second conveyor line 62. The transfer conveyor line 63 then transports the emptied tin boxes onto the second conveyor line 62.

[0123] The second conveyor line 62 outputs the empty material boxes.

[0124] As can be seen, through the cooperation of the first conveyor line 61, the second conveyor line 62 and the transfer conveyor line 63, the material box conveying device 6 can timely and continuously transport the material box filled with battery cells 100 to the cell picking position, preventing battery cell shortage.

[0125] like Figure 3 and Figure 6 As shown, optionally, the cell-taking device 7 includes a second drive mechanism 71, a second mounting bracket 72, and at least one third suction assembly 73, wherein: the second mounting bracket 72 is connected to the drive end of the second drive mechanism 71. The third suction assembly 73 is disposed on the second mounting bracket 72. The second drive mechanism 71 is configured to drive the second mounting bracket 72 to translate and lift, so as to drive each third suction assembly 73 to pick up the cell 100 from the material box and place the picked-up cell 100 onto the feeding conveyor line 8.

[0126] Figure 3In the specific embodiment shown, the magazine on the first conveying line 61 comprises three accommodating cavities arranged in sequence along the conveying direction of the first conveying line 61, and each accommodating cavity is used to stack the battery sheet 100. Figure 6 In the specific embodiment shown, the third suction assembly 73 is arranged in three parallel rows, so that the three third suction assemblies 73 in the sheet taking device 7 can each take one battery sheet 100 from the three accommodating cavities of the magazine at a time, i.e., the sheet taking device 7 can take three battery sheets 100 at a time and simultaneously feed the three taken battery sheets 100 to the feeding conveying line 8, thereby improving the feeding efficiency of the battery sheet 100. Of course, the number of accommodating cavities of the magazine can also be set to one, two, four or other values, and correspondingly, the number of third suction assemblies 73 can also be set to one, two, four or other values, and the number of third suction assemblies 73 and the number of accommodating cavities of the magazine need to be consistent to ensure that all third suction assemblies 73 can simultaneously take the battery sheet 100 in all accommodating cavities.

[0127] Since the downward first surface of the battery sheet 100 is provided with a welding strip in advance, the middle part of the second surface of the battery sheet 100 is prone to arch upward under the pulling of the welding strip, thereby reducing the flatness of the battery sheet 100. In order to solve this problem, optionally, as shown in Figure 6 As shown, the third suction assembly 73 comprises a suction assembly 731 and a pressing unit 732, wherein the suction assembly 731 and the pressing unit 732 are both connected to the second mounting bracket 72. The suction assembly 731 is configured to adsorb the battery sheet 100, and when the suction assembly 731 places the battery sheet 100 to the feeding conveying line 8, the pressing unit 732 is configured to press the middle part of the battery sheet 100 downward to flatten the battery sheet 100, thereby improving the flatness of the battery sheet 100.

[0128] As shown in the specific embodiment shown in Figure 6 As shown in the specific embodiment shown in

[0129] Optionally, the pressing unit 732 comprises a pneumatic cylinder 7321 and a pressing plate 7322, the pneumatic cylinder 7321 is arranged on the second mounting bracket 72, and the pressing plate 7322 is connected to the lower end of the telescopic rod of the pneumatic cylinder 7321.

[0130] When the battery piece 100 is adsorbed by the adsorption assembly 731, the telescopic rod of the air cylinder 7321 is retracted upwards, and the bottom surface of the pressing plate 7322 is higher than the bottom surface of the adsorption assembly 731 to avoid the battery piece 100.

[0131] When the battery piece 100 is placed on the feeding conveying line 8 by the adsorption assembly 731, the telescopic rod of the air cylinder 7321 is extended downwards, so that the pressing plate 7322 is pressed against the battery piece 100 to press the middle arch of the battery piece 100 downwards, so that the whole battery piece 100 is flattened.

[0132] Figure 3 and Figure 6 In the embodiment shown, the second driving mechanism 71 is composed of a translation module and a lifting module, the lifting module is connected to the movable part of the translation module, and the second mounting bracket 72 is connected to the movable part of the lifting module. The translation module is used to drive the second mounting bracket 72 to translate, and the lifting module is used to drive the second mounting bracket 72 to lift. The translation module and the lifting module can all use various existing linear driving modules, such as a belt pulley driving module, a screw driving module, etc.

[0133] The second driving mechanism 71 can also be a robot arm, and the second mounting bracket 72 is connected to the end of the robot arm, and the robot arm drives the second mounting bracket 72 to translate and lift.

[0134] As shown in Figure 3 Optionally, the battery stringing device in the embodiment of the application further comprises a pressing tool conveying line 9 and a pressing tool removing device 10. The pressing tool conveying line 9 is configured to convey the pressing tool 300 to the side of the welding strip placing position C, and the carrying device 2 is configured to pick up the pressing tool 300 from the pressing tool conveying line 9. The pressing tool removing device 10 is arranged at the rear of the stringing device 4, and the pressing tool removing device 10 is configured to put the pressing tool 300 on the welding strip group 400 back to the pressing tool conveying line 9 after the welding strip group 400 is fixed to the corresponding battery piece 100.

[0135] By arranging the pressing tool conveying line 9, the pressing tool 300 is automatically conveyed to the side of the welding strip placing position C, so that the carrying device 2 can pick up the pressing tool nearby. By arranging the pressing tool removing device 10, the pressing tool 300 can be automatically put back to the pressing tool conveying line 9 after the welding strip group 400 is fixed to the corresponding battery piece 100, and the pressing tool conveying line 9 re-conveys the recovered pressing tool 300 to the side of the welding strip placing position C to realize the recycling of the pressing tool 300.

[0136] As shown in Figure 7As shown, the optional pressing tool removing device 10 comprises a fifth driving mechanism 1001 and a fourth suction assembly 1002. The fourth suction assembly 1002 is connected to a movable part of the fifth driving mechanism 1001, and the fifth driving mechanism 1001 drives the fourth suction assembly 1002 to translate and lift, so as to drive the fourth suction assembly 1002 to suck and carry the pressing tool 300.

[0137] The fifth driving mechanism 1001 can adopt various existing driving devices capable of driving the fourth suction assembly 1002 to translate and lift. For example, the fifth driving mechanism 1001 comprises a second translation driving part and a second lifting driving part, the second lifting driving part is connected to the driving end of the second translation driving part, and the fourth suction assembly 1002 is connected to the driving end of the second lifting driving part. The second translation driving part is used to drive the fourth suction assembly 1002 to translate, and the second lifting driving part is used to drive the fourth suction assembly 1002 to lift. The second translation driving part and the second lifting driving part can each adopt various types of linear driving modules, such as a cylinder, a linear motor module, a ball screw module, etc.

[0138] The fifth driving mechanism 1001 can also be a robot arm, and the fourth suction assembly 1002 is connected to the end of the robot arm. The robot arm drives the fourth suction assembly 1002 to translate and lift. The fourth suction assembly 1002 can be, for example, an electromagnet assembly.

[0139] As shown in Figure 1 and Figures 8 to 10 Optionally, the battery stringing device in the embodiments of the present application further comprises a first solder strip guiding device 110 located at the solder strip placement position C.

[0140] The first solder strip guiding device 110 at least comprises a first guiding plate 111 located above the junction of the buffer position B and the solder strip placement position C, and has a first gap between the first guiding plate 111 and the conveying surface of the stringing conveying line 1 for the battery sheet 100 to pass through. When the solder strip laying device 3 pulls the solder strip group 400 towards the solder strip placement position C, the first guiding plate 111 is configured to guide the solder strip group 400. Specifically, the first guiding plate 111 is provided with a plurality of first guiding grooves 1111, and each first guiding groove 1111 is used to accommodate and guide one solder strip in the solder strip group 400.

[0141] It can be seen that through the guidance of the first guiding plate 111, it can be ensured that the solder strip laying device 3 can accurately pull and lay the solder strip group 400 to the target position on the battery sheet 100 located at the solder strip placement position C, preventing the solder strip group 400 from being offset during pulling and laying, and affecting the quality of the battery string.

[0142] When the welding strip arrangement device 3 pulls the welding strip group 400 to the battery piece 100 at the welding strip placement position C, the leading end of the welding strip group 400 is still clamped by the welding strip arrangement device 3, that is, the leading end of the welding strip group 400 is inclined upward. The conventional pressing tool has pressing needles of the same length arranged thereon, so that the welding strip group 400 is pressed by the conventional pressing tool. Since the leading end of the welding strip group 400 is at a high position and is still clamped by the welding strip arrangement device 3, when the pressing tool 300 presses the welding strip group 400, the welding strip arrangement device 3 releases the leading end of the welding strip group 400, the leading end of the welding strip group 400 is deformed by pressing and is in a warped state, which affects subsequent stringing.

[0143] The applicant of the present application discloses a welding strip pressing tool (i.e., a pressing tool for pressing a welding strip group) in a Chinese utility model patent with the publication number CN202320560561.1. The welding strip pressing tool has the elastic pressing needles at both ends of the pressing tool arranged as first-type pressing needles of a shorter length, and the elastic pressing needles at the middle part arranged as second-type pressing needles of a longer length. When the welding strip group is pulled and laid on the battery piece by a welding strip pulling mechanism (equivalent to the welding strip arrangement device 3 in the present application), the end plates at both ends of the pressing tool are lifted, so that the second-type pressing needles press the non-leading end of the welding strip group first. When the welding strip pulling mechanism releases the welding strip group, the pressing tool is controlled to fall completely, and the first-type pressing needles press the leading end of the welding strip group. In this way, the leading end of the welding strip group can be prevented from being bent and warped upward.

[0144] The present application adopts the pressing tool to press the welding strip group 400. Specifically, as shown in Figure 14 the pressing tool 300 includes the first-type pressing needles 301 at both ends and the second-type pressing needles 302 at the middle part. In the non-pressing state, the bottom surface of the first-type pressing needles 301 is higher than the bottom surface of the second-type pressing needles 302. Alternatively, in the non-pressing state, the first-type pressing needles 301 are shorter than the second-type pressing needles 302.

[0145] Optionally, the first guiding plate 111 of the first welding strip guiding device 110 is configured to be movable parallel to the conveying path of the stringing conveying line 1, so as to switch between the guiding position close to the welding strip placement position C and the avoiding position away from the welding strip placement position C. As shown in Figures 8 to 10 the first welding strip guiding device 110 further includes a first support plate 112 and a second support plate 113 located on both sides of the welding strip placement position C. The first support plate 112 and the second support plate 113 are configured to be synchronously switched between a supporting position and a releasing position, wherein the supporting position is higher than the releasing position.

[0146] After the ribbon feeding device 3 pulls the ribbon assembly 400 onto the battery cell 100 located at the ribbon placement position C, the tail end of the ribbon assembly 400 is supported on the first guide plate 111 located at the guide position. When the first support plate 112 and the second support plate 113 rise to the support position, they respectively support the two end plates of the press 300 placed on the ribbon assembly 400 by the transport device 2, so that the first type of pressure pins 310 at both ends of the press 300 do not contact the beginning and end of the ribbon assembly 400, and the second type of pressure pins 302 in the middle of the press 300 press the ribbon assembly 400 tightly onto the battery cell 100.

[0147] When the ribbon feeding device 3 releases the first end of the ribbon group 400, the first guide plate 111 is configured to move to the clearance position to release the tail end of the ribbon group 400, and the first support plate 112 and the second support plate 113 are configured to descend synchronously to the release position so that the first type of pressure pins 301 at both ends of the pressure fixture 300 press the tail end and the first end of the ribbon group 400 onto the battery cell 100 respectively.

[0148] As can be seen, when the ribbon assembly 400 is pulled onto the battery cell 100 at the ribbon placement position C, the tail end of the ribbon assembly 400 is supported on the first guide plate 111 at the guide position, while the head end remains clamped by the ribbon feeding device 3. When the conveying device 2 places the press 300 onto the ribbon assembly 400, the first support plate 112 and the second support plate 113 at the support position support and elevate the two end plates of the press 300, so that the first type of pressure pins 301 at both ends of the press 300 do not contact the head and tail ends of the ribbon assembly 400, while the second type of pressure pins 302 in the middle of the press 300 presses the non-end portion of the ribbon assembly 200 onto the battery cell 100. When the ribbon feeding device 3 releases the first end of the ribbon group 400 and the first guide plate 111 releases the tail end of the ribbon group 400, the first support plate 112 and the second support plate 113 simultaneously descend to the release position, thereby causing the first type of pressure pins 301 at both ends of the pressure fixture 300 to press down on the first end and the tail end of the ribbon group 400 respectively. In this way, the upward-curving ends of the ribbon group 400 can be prevented from being bent by the pressure fixture 300, causing it to curl upward, and ensuring that both ends of the ribbon group 400 can be accurately stacked at the target position of the battery cell 100.

[0149] Optionally, the first welding strip guide device 110 further includes a first support arm 114, a second support arm 115, a first lifting assembly 116, a second lifting assembly 117, a first elastic pressing assembly 118, a second elastic pressing assembly 119, and a third drive mechanism 1120, wherein:

[0150] The first support arm 114 and the second support arm 115 are oppositely arranged on both sides of the series connection conveying line 1, and are in transmission connection with the third driving mechanism 1120. Both ends of the first guide plate 111 are connected to the first support arm 114 and the second support arm 115 respectively. The first support arm 114 and the second support arm 115 are sequentially provided with a first support surface a and a second support surface b in a direction away from the first guide plate 111, and the first support surface a is higher than the second support surface b.

[0151] The third driving mechanism 1120 is configured to drive the first support arm 114 and the second support arm 115 to move parallel to the conveying path of the series connection conveying line 1, so as to drive the first guide plate 111 to switch between the guide position and the avoiding position. Optionally, in order to implement the translation guide of the first support arm 114 and the second support arm 115, guide rails parallel to the conveying path of the series connection conveying line 1 are arranged on both sides of the series connection conveying line 1, and the first support arm 114 and the second support arm 115 are slidingly installed on the guide rails on the corresponding side.

[0152] The first lifting assembly 116 is connected to the first side wall of the series connection conveying line 1 in a liftable and slidable manner, the second lifting assembly 117 is connected to the second side wall of the series connection conveying line 1 in a liftable and slidable manner, the first support plate 112 is connected to the first lifting assembly 116, and the second support plate 113 is connected to the second lifting assembly 117.

[0153] The first elastic compression assembly 118 is connected to the first side wall of the series connection conveying line 1, and the second elastic compression assembly 119 is connected to the second side wall of the series connection conveying line 1.

[0154] When the first guide plate 111 moves to the guide position, the first elastic compression assembly 118 is configured to elastically compress the first lifting assembly 116 on the first support surface a of the first support arm 114, the second elastic compression assembly 119 is configured to elastically compress the second lifting assembly 117 on the first support surface a of the second support arm 115, and the first support plate 112 and the second support plate 113 are located in the support position.

[0155] When the first guide plate 111 moves to the avoiding position, the first elastic compression assembly 118 is configured to elastically compress the first lifting assembly 116 on the second support surface b of the first support arm 114, the second elastic compression assembly 119 is configured to elastically compress the second lifting assembly 117 on the second support surface b of the second support arm 115, and the first support plate 112 and the second support plate 113 are located in the release position.

[0156] It can be seen that by arranging the first solder strip guide device 110, the linkage of the first support plate 112, the second support plate 113 and the first guide plate 111 is realized, and specifically:

[0157] When the third drive mechanism 1120 drives the first guide plate 111 to the guide position via the first support arm 114 and the second support arm 115, the first lifting assembly 116 and the second lifting assembly 117 move onto the first support surface a of the first support arm 114 and the second support arm 115, and are thus lifted, causing the first support plate 112 and the second support plate 113 to rise to the support position. At the same time, the first elastic pressing assembly 118 and the second elastic pressing assembly 119 are compressed and contract vertically.

[0158] When the third drive mechanism 1120 drives the first guide plate to the avoidance position via the first support arm 114 and the second support arm 115, the first lifting assembly 116 and the second lifting assembly 117 move to the second support surface b of the first support arm 114 and the second support arm 115. At the same time, after the first elastic pressing assembly 118 and the second elastic pressing assembly 119 lose pressure, they push the first lifting assembly 116 and the second lifting assembly 117 downward, thereby causing the first support plate and the second support plate to descend to the release position.

[0159] The above-described configuration achieves simultaneous driving of the first guide plate 111, the first support plate 112, and the second support plate 113 with only one drive mechanism, thereby reducing drive costs. Furthermore, it ensures that the first guide plate 111 moves synchronously with the first support plate 112 and the second support plate 113. When the first guide plate 111 switches to the guiding position, the first support plate 112 and the second support plate 113 switch to the supporting position; when the first guide plate 111 switches to the avoidance position, the first support plate 112 and the second support plate 113 switch to the release position.

[0160] Of course, in other embodiments, the first guide plate 111, the first support plate 112, and the second support plate 113 can also be driven independently by different driving mechanisms. For example, the first guide plate 111 is connected to a translation drive device, while the first support plate 112 and the second support plate 113 are connected to a lifting drive device. When the translation drive device drives the first guide plate 111 to translate to the guide position, the lifting drive device drives the first support plate 112 and the second support plate 113 to rise to the support position. When the translation drive device drives the first guide plate 111 to translate to the avoidance position, the lifting drive device drives the first support plate 112 and the second support plate 113 to descend to the release position. The translation drive device can be an existing horizontal cylinder, linear module, etc. The lifting drive device can be an existing vertical cylinder, linear module, etc.

[0161] Optionally, the second lifting assembly 117 has the same structure as the first lifting assembly 116, and the second elastic compression assembly 119 has the same structure as the first elastic compression assembly 118. Taking the first lifting assembly 116 and the first elastic compression assembly 118 as examples, as shown in Figures 8 to 9 The first lifting assembly 116 includes a sliding block 1161 and a roller 1162. The sliding block 1161 is connected to the first side wall of the serial conveying line 1 in a vertically-slidable manner through a vertical sliding rail. The roller 1162 is arranged on the sliding block 1161 and supported on the first support arm 114. The first support plate 112 is connected to the top of the sliding block 1161. The first elastic compression assembly 118 includes a compression block and a spring. The compression block is fixed to the first side wall of the serial conveying line 1 and located above the roller 1162. The upper end of the spring is abutted against the compression block, and the lower end of the spring is abutted against the sliding block 1161.

[0162] When the first guide plate 111 moves from the avoiding position to the guiding position under the driving of the third driving mechanism 1120, the roller 1162 slides from the second support surface b of the first support arm 114 to the first support surface a of the first support arm 114, thereby driving the sliding block 1161 to slide upward, so that the first support plate 112 rises to the supporting position, and the spring is compressed under pressure.

[0163] When the first guide plate 111 moves from the guiding position to the avoiding position, the roller 1162 slides from the first support surface a of the first support arm 114 to the second support surface b of the first support arm 114, the spring rebounds under pressure, and pushes the sliding block 1161 to slide downward, so that the first support plate 112 descends to the releasing position. To ensure smooth movement of the roller 1162 between the first support surface a and the second support surface b, the first support surface a and the second support surface b are smoothly transitioned.

[0164] The first lifting assembly 116 and the second lifting assembly 117 are arranged in a lifting structure composed of the sliding block 1161 and the roller 1162, so that the first lifting assembly 116 and the second lifting assembly 117 can smoothly slide up and down relative to the serial conveying line 1 and smoothly slide horizontally along the support surfaces of the first support arm 114 and the second support arm 115, avoiding jamming and affecting the support stability of the first support plate 112 and the second support plate 113.

[0165] To facilitate disassembly and assembly of the sliding block 1161 and the side wall of the serial conveying line 1, as shown in Figure 8As shown, optionally, the sliding block 1161 is fixed to the side wall of the serial conveying line 1 via the mounting block 1130. For example, vertical guide rails are arranged on the mounting block 1130, and the sliding block 1161 is in sliding connection with the mounting block 1130 via the vertical guide rails. The mounting block 1130 is fixedly connected to the side wall of the serial conveying line 1 via the connecting holes arranged thereon. Of course, the sliding block 1161 can also be directly in sliding connection with the side wall of the serial conveying line 1 via vertical sliding rails.

[0166] As shown, Figures 8 to 9 As shown, optionally, the third driving mechanism 1120 includes a first translation driving module 1121 and a first connecting plate 1122, wherein the first connecting plate 1122 is connected to the driving end of the first translation driving module 1121 and located at the lower side of the conveying surface of the serial conveying line 1, and the two ends of the first connecting plate 1122 are connected with the first support arm 114 and the second support arm 115 respectively.

[0167] In this way, under the premise of ensuring that the third driving mechanism 1120 can implement the synchronous translation driving of the first support arm 114 and the second support arm 115, the serial conveying line 1 is avoided, so that the third driving mechanism 1120 and the serial conveying line 1 do not interfere with each other.

[0168] The first translation driving module 1121 can adopt various linear driving modules capable of driving the first connecting plate 1122 to translate, such as a pneumatic cylinder, or a lead screw driving module composed of a servo motor, a lead screw and a lead screw nut, etc.

[0169] As shown, Figure 1 and Figures 11 to 12 As shown, optionally, the battery string equipment in the embodiment of the application further includes a second welding strip guiding device 120, and the second welding strip guiding device 120 includes a second guiding plate 121 and a fourth driving mechanism 122, wherein the second guiding plate 121 is located above the serial conveying line 1 and in front of the first guiding plate 111, and the second guiding plate 121 and the conveying surface of the serial conveying line 1 have a second gap for the battery piece 100 to pass through. The second guiding plate 121 is in transmission connection with the fourth driving mechanism 122, and the fourth driving mechanism 122 is configured to drive the second guiding plate 121 to move parallel to the conveying path of the serial conveying line 1, so that the second guiding plate 121 is switched between the first transfer position away from the first guiding plate 111 and the second transfer position close to the first guiding plate 111.

[0170] When the second guide plate 121 moves to the first junction position, the welding strip group 400 pulled by the welding strip distribution device 3 falls onto the second guide plate 121. When the second guide plate 121 moves to the second junction position, the welding strip group 400 transitions to the first guide plate 111 under the traction of the welding strip distribution device 3. In particular, the second guide plate 121 is provided with a plurality of second guide grooves 1211, each second guide groove 1211 being used to accommodate one welding strip from the welding strip group 400.

[0171] The following will combine Figure 15 The guiding process of the second ribbon guide device 120 and the first ribbon guide device 110 in the embodiments of the present invention will be described by way of example.

[0172] like Figure 15 As shown in (a), the second guide plate 121 is located at the second junction position, and the first guide plate 11 is located at the guide position. The first battery cell 100 is laid with its first surface facing down at the battery cell placement position A.

[0173] like Figure 15 As shown in (b), the control series conveyor line 1 is stepped forward once, causing the first solar cell 100 to move forward to the buffer position B, freeing up the solar cell placement position A. Subsequently, the second solar cell 100 is placed at the solar cell placement position A with its first surface facing down.

[0174] like Figure 15 As shown in (c), the second guide plate 121 moves to the first handover position, ready to receive the first welding strip group pulled by the welding strip device 3.

[0175] like Figure 15 As shown in (d), the control series conveyor line 1 advances one step, causing the second solar cell 100 to advance to the buffer position B, and the first solar cell 100 to advance to the ribbon placement position C, freeing up the solar cell placement position A. The ribbon placement device 3 pulls the first ribbon group onto the first solar cell 100 located at the ribbon placement position C. During the pulling process, the second guide plate 121 moves synchronously with the ribbon placement device 3 to the second handover position, and the first ribbon group transitions from the second guide plate 121 to the first guide plate 111. After the first ribbon group is pulled into place, the tail end of the first ribbon group is finally supported on the first guide plate 111.

[0176] like Figure 15As shown in (e), the conveying device 2 places the first pressure fixture at the ribbon placement position C and places the third solar cell 100 with its first surface facing down at the solar cell placement position A. The second type of pressure pin of the first pressure fixture presses the first ribbon group onto the first solar cell 100. Subsequently, the first guide plate 11 moves to a clearance position, the ribbon feeding device 3 releases the leading end of the first ribbon group, and the first type of pressure pin of the pressure fixture presses the trailing end and leading end of the first ribbon group.

[0177] like Figure 15 As shown in (f), the control series conveyor line 1 advances one step, causing the third solar cell 100 to advance to the buffer position B, and the second solar cell 100 to advance to the welding strip placement position C, freeing up the solar cell placement position A. At the same time, the second guide plate 121 moves to the first handover position, ready to receive the second welding strip group pulled by the welding strip distribution device 3.

[0178] Repeat as Figure 15 (d) to Figure 15 The process of laying (f) in the middle continues until the battery is connected in a string.

[0179] As can be seen, by setting a second guide plate 121 driven by the fourth drive mechanism 122, when the welding strip feeding device 3 pulls the welding strip group toward the first guide plate 111, the second guide plate 121 can move synchronously toward the first guide plate 111 with the welding strip feeding device 3 to support the welding strip group from below, thereby achieving the guiding and positioning of the welding strip group, and ultimately ensuring that each welding strip in the welding strip group can accurately enter the corresponding first guide groove 1111 on the first guide plate 111.

[0180] Optionally, the second welding strip guiding device 120 further includes a third support arm 123 and a fourth support arm 124, wherein the third support arm 123 and the fourth support arm 124 are arranged opposite to each other on both sides of the serial conveyor line 1 and are both connected to the fourth drive mechanism 122. The two ends of the second guide plate 121 are respectively connected to the third support arm 123 and the fourth support arm 124. The fourth drive mechanism 122 is configured to drive the third support arm 123 and the fourth support arm 124 to move parallel to the conveying path of the serial conveyor line, so as to drive the second guide plate 121 to move and switch between the first junction position and the second junction position. Optionally, in order to implement the translational guidance of the third support arm 123 and the fourth support arm 124, guide rails parallel to the conveying path of the serial conveyor line 1 are provided on both sides of the serial conveyor line 1, and the third support arm 123 and the fourth support arm 124 are slidably mounted on the guide rails on the corresponding sides.

[0181] The two ends of the second guide plate 121 are connected to the third support arm 123 and the fourth support arm 124 respectively, and the third support arm 123 and the fourth support arm 124 are driven by the fourth driving mechanism 122 to move parallel to the conveying path of the series conveying line 1, thereby driving the second guide plate 121 to move and switch between the first transfer position and the second transfer position, so that the second guide plate 121 remains in a stable horizontal state and ensures the guiding effect of the second guide plate 121 on the solder strip group.

[0182] As shown in Figure 11 Optionally, the fourth driving mechanism 122 includes a second translation driving module 1221 and a second connecting plate 1222, wherein the second connecting plate 1222 is connected to the driving end of the second translation driving module 1221 and located on the lower side of the conveying surface of the series conveying line 1. The two ends of the second connecting plate 1222 are connected to the third support arm 123 and the fourth support arm 124 respectively.

[0183] In this way, under the premise of ensuring that the fourth driving mechanism 122 can implement synchronous translation driving on the third support arm 123 and the fourth support arm 124, the series conveying line 1 is avoided, so that the fourth driving mechanism 122 does not interfere with the series conveying line 1.

[0184] The second translation driving module 1221 can adopt various linear driving modules that can drive the second connecting plate 1222 to translate, such as a pneumatic cylinder, or a lead screw driving module composed of a servo motor, a lead screw and a lead screw nut, etc.

[0185] As shown in Figure 13 Optionally, the solder strip arranging device 3 includes a third translation driving part 31, a third lifting driving part 32 and a clamping part 33, wherein the third lifting driving part 32 is connected to the driving end of the third translation driving part 31, and the clamping part 33 is connected to the driving end of the third lifting driving part 32. The third translation driving part 31 and the third lifting driving part 32 are respectively used to drive the clamping part 33 to translate and lift, thereby driving the clamping part 33 to clamp the solder strip group from the solder strip supply device 5 and to pull the solder strip group towards the solder strip placement position C.

[0186] The third translation driving part 31 is, for example, a synchronous belt module composed of a motor, a synchronous belt and a slider, etc., and the third lifting driving part 32 is, for example, a ball screw module or a linear motor module, etc.

[0187] To improve the efficiency of traction and laying of the welding strip assembly, optionally, the welding strip laying device 3 is configured as two sets. The two sets of welding strip laying devices 3 alternately pick up the welding strip assembly from the welding strip supply device 5 and alternately pull the welding strip assembly toward the welding strip placement position C. When one set of welding strip laying devices 3 pulls the welding strip assembly to the welding strip placement position C, the first guide plate 111 supports and guides the welding strip assembly at the welding strip placement position C. Meanwhile, the other set of welding strip laying devices 3 pulls the next set of welding strip assemblies from the welding strip supply device 5, and the second guide plate 121 can cooperate with the other set of welding strip laying devices 3 to guide the movement of the next set of welding strip assemblies.

[0188] Optionally, the series connection device 4 can be any existing device capable of fixing the solder ribbon assembly 400 to the solar cell 100. For example, the series connection device 4 can be a heating lamp box, which can heat the solder ribbon assembly 400 so that the solder on the surface of the solder ribbon assembly 400 melts and welds it to the corresponding solar cell 100. Alternatively, an adhesive application device can be provided between the solder ribbon placement position C and the series connection device 4. The adhesive application device is used to apply thermosetting adhesive to the solder ribbon assembly 400. When the solder ribbon assembly 400 reaches the bottom of the heating lamp box, the heating lamp box radiates heat onto the solder ribbon assembly 400, thereby curing the thermosetting adhesive on the solder ribbon assembly 400 and bonding the solder ribbon assembly 400 to the solar cell 100.

[0189] Based on the same inventive concept, this application also provides a battery series connection method, which is used to connect batteries in series. Figure 2 The N battery cells 100 with a set of solder strips on their first surface shown are connected in series to form a battery string. All solder strips 101 on the first surface of the battery cells 100 extend outward and are interconnected by a connecting strip 102.

[0190] The battery series connection method of this application includes the following steps:

[0191] After placing the first battery cell with its first surface facing down in the battery cell placement position, move the first battery cell forward to the buffer position to free up the battery cell placement position.

[0192] After placing the second battery cell with its first surface facing down in the battery cell placement position, the first and second battery cells are simultaneously stepped forward, so that the second battery cell moves forward to the buffer position and the first battery cell moves forward to the solder strip placement position, thus freeing up the battery cell placement position.

[0193] Set the initial value of i to 1, determine whether i is greater than N-2, if i is not greater than N-2, then pull the i-th ribbon group to the i-th cell located at the ribbon placement position, and place the tail end of the i-th ribbon group on the connecting strip of the (i+1)-th cell located at the buffer position.

[0194] placing the i+2th battery piece first surface downward to the battery piece placing position;

[0195] stepping all the battery pieces simultaneously, so that the i+2th battery piece steps forward to the buffer position, the i+1th battery piece steps forward to the solder strip placing position, leaving the battery piece placing position empty; i+1, executing the step of judging whether i is greater than N-2;

[0196] if i is greater than N-2, then pulling the N-1th solder strip group to the N-1th battery piece located at the solder strip placing position, and making the tail end of the N-1th solder strip group rest on the connecting strip of the Nth battery piece located at the buffer position;

[0197] placing the N-1th pressing tool to the N-1th solder strip group;

[0198] stepping the Nth battery piece forward to the solder strip placing position, and pulling the Nth solder strip group to the Nth battery piece, placing the Nth pressing tool to the Nth solder strip group;

[0199] wherein: the battery piece placing position, the buffer position, and the solder strip placing position are sequentially and continuously arranged along the first direction;

[0200] fixing each solder strip group to the corresponding battery piece.

[0201] In order to enable those skilled in the art to more clearly understand the implementation process of the battery string connecting method of the present application, the following still combines Figure 4 with N taking the value of 4 as an example, the implementation process of the battery string connecting method in the embodiment of the present application is described in more detail.

[0202] The battery string to be made in this embodiment is formed by connecting 4 battery pieces through 4 solder strip groups. In combination with reference Figure 4 , the specific string forming process of the battery string is as follows:

[0203] placing the 1st battery piece 100 first surface downward to the battery piece placing position A.

[0204] stepping the 1st battery piece 100 forward to the buffer position B, leaving the battery piece placing position A empty.

[0205] placing the 2nd battery piece 100 first surface downward to the battery piece placing position A, and stepping the 1st and 2nd battery pieces 100 simultaneously, so that the 2nd battery piece 100 steps forward to the buffer position B, the 1st battery piece 100 steps forward to the solder strip placing position C, leaving the battery piece placing position A empty.

[0206] The initial value of i is set to 1, and it is determined whether i is greater than N-2 (=2). Since i is not greater than N-2, the first solder strip group 400 is pulled onto the first battery piece 100 at the solder strip placement position C, and the tail end of the first solder strip group 400 is placed on the connecting strip 102 of the second battery piece 100 at the buffer position B.

[0207] The first pressing tool 300 is placed on the first solder strip group 400, and the third battery piece 100 is placed at the battery piece placement position A with the first surface facing downward.

[0208] All the battery pieces 100 are simultaneously stepped forward, so that the fourth battery piece is stepped forward to the buffer position B, the third battery piece 100 is stepped forward to the solder strip placement position C, and the battery piece placement position A is emptied.

[0209] i is incremented by 1, i.e. i=2, and it is determined whether i is greater than N-2 (=2). Since i is not greater than N-2, the second solder strip group 400 is pulled onto the second battery piece at the solder strip placement position C, and the tail end of the second solder strip group 400 is placed on the connecting strip 102 of the third battery piece 100 at the buffer position B.

[0210] The second pressing tool 300 is placed on the second solder strip group 400, and the fourth battery piece 100 is placed at the battery piece placement position A with the first surface facing downward.

[0211] All the battery pieces 100 are simultaneously stepped forward, so that the fourth battery piece is stepped forward to the buffer position B, the third battery piece 100 is stepped forward to the solder strip placement position C, and the battery piece placement position A is emptied.

[0212] i is incremented by 1, i.e. i=3, and it is determined whether i is greater than N-2 (=2). Since i is greater than 2, the third solder strip group is pulled onto the third battery piece 100 at the solder strip placement position, and the tail end of the third solder strip group 400 is placed on the connecting strip 102 of the fourth battery piece 100 at the buffer position B.

[0213] The third pressing tool 300 is placed on the third solder strip group 400.

[0214] The fourth battery piece is stepped forward to the solder strip placement position C, the fourth solder strip group 400 is pulled onto the fourth battery piece, and the fourth pressing tool 300 is placed on the fourth solder strip group 400.

[0215] At this point, the stringing of the battery pieces 100 and the solder strip groups 400 is completed.

[0216] Each solder strip group 400 is fixed to the corresponding battery piece 100, and a battery string is obtained.

[0217] It can be seen that the battery stringing method provided by the application, in the stringing process, the battery piece 100 is step by step conveyed to the solder strip placement position C. Whenever a battery piece 100 reaches the solder strip placement position C, the solder strip group 400 is pulled to the battery piece 100 at the solder strip placement position C, and the tail end of the solder strip group 400 is placed on the connecting strip 102 of the battery piece 100 at the buffer position B, until the stringing of the battery piece 100 and the solder strip group 400 is completed. In addition, during the stringing, the pressing tool 300 is placed on the solder strip group 400 to realize the pressing and positioning of the solder strip group 400.

[0218] The battery stringing method provided by the application realizes the automatic stringing of the battery piece with the solder strip on the first surface, which improves the stringing efficiency of the battery piece and ensures the stringing quality.

[0219] Optionally, during the stringing, the i+2th battery piece 100 is placed at the battery piece placement position A with the first surface downward while the i th pressing tool 300 is placed on the i th solder strip group 400. In this way, the simultaneous stringing of the pressing tool 300 and the battery piece 100 can be realized, so as to further improve the stringing efficiency of the battery piece 100.

[0220] The battery stringing method in the embodiments of the application can be implemented by the battery stringing device in any of the foregoing embodiments, and further implementation details can be referred to the related description of the battery stringing device in the foregoing embodiments, which will not be described here.

[0221] The application has been described in sufficient detail with certain specificities. It is understood by those skilled in the art that the description in the embodiments is only exemplary, and all changes made without departing from the true spirit and scope of the application should belong to the protection scope of the application. The scope of protection claimed by the application is defined by the claims, not by the above description of the embodiments. Some optional components in one embodiment can also be used in another embodiment without contradiction, and some preferred structures of the same component in one embodiment are also applicable to another embodiment. In addition, there may be slight differences in the names of some components in different embodiments, which will not affect the understanding of the technical solutions of the application by those skilled in the art.

Claims

1. A battery stringing device, characterized in that, For stringing N battery cells with a set of solder strips on their first surface into a battery string, all solder strips on the first surface of the battery cells extend outward and are interconnected by a connecting strip. The battery stringing equipment includes a stringing conveyor line, a handling device, a solder strip placement device, and a stringing device, wherein: The series conveyor line has continuous battery cell placement positions, buffer positions and solder strip placement positions on its conveying path. The series conveyor line is configured to step-convey battery cells with the first surface facing down, so that the battery cells located at the battery cell placement positions step sequentially to the buffer positions and the solder strip placement positions. When the i-th solar cell steps to the ribbon placement position, the ribbon placement device is configured to pull the i-th ribbon group onto the i-th solar cell located at the ribbon placement position, and to place the tail end of the i-th ribbon group onto the connecting strip on the (i+1)-th solar cell located at the buffer position; the transport device is configured to place the i-th clamp onto the i-th ribbon group and to place the (i+2)-th solar cell with its first surface facing down at the solar cell placement position, the clamp being used to press the ribbon group firmly onto the corresponding solar cell; wherein... ; The series connection device is located after the placement of the solder strip and is configured to fix the solder strip group to the corresponding battery cell.

2. The battery stringing device as described in claim 1, characterized in that, The conveying device includes a first drive mechanism, a first mounting bracket, a first suction assembly, and a second suction assembly, wherein: The first mounting bracket is connected to the drive end of the first drive mechanism; The first suction component and the second suction component are arranged side by side with a spacing on the first mounting bracket; The first drive mechanism is configured to drive the first mounting bracket to translate and lift, thereby driving the first suction component to pick up the battery cell and place the picked-up battery cell with its first surface facing down at the battery cell placement position; and to drive the second suction component to pick up the pressure fixture and place the picked-up pressure fixture on the solder strip group located at the solder strip placement position, thereby pressing the solder strip group onto the corresponding battery cell. The distance between the first suction component and the second suction component is not less than the length of the battery cell in the conveying direction of the series conveyor line.

3. The battery stringing device as described in claim 2, characterized in that, The spacing between the first suction component and the second suction component is configured to be adjustable, and at least one of the first suction component and the second suction component is adjustablely mounted on the first mounting bracket via a waist-shaped hole.

4. The battery stringing device as described in claim 1, characterized in that, The battery stringing equipment also includes a welding strip supply device disposed on the front side of the input end of the stringing conveyor line. The welding strip supply device is configured to cut several welding strips released from the welding strip roll to obtain a welding strip group with a predetermined length. The ribbon feeding device is configured to obtain the ribbon group from the ribbon supply device and place the ribbon group onto the battery cell at the ribbon placement position.

5. The battery stringing device as described in claim 1, characterized in that, The battery stringing equipment also includes a material box conveying device, a cell picking device, and a feeding conveyor line, wherein: The material box conveying device is configured to convey a material box filled with battery cells to the cell picking position; The cell picking device is configured to pick up a cell from a hopper located at the cell picking position and place the cell with its first surface facing down onto the feeding conveyor line; The feeding conveyor line is configured to transport the battery cells to the side of the battery cell placement position, and the handling device is configured to pick up the battery cells from the feeding conveyor line.

6. The battery stringing device as described in claim 5, characterized in that, The material box conveying device includes a first conveyor line, a second conveyor line, and a transfer conveyor line, wherein: The first conveyor line is positioned above the second conveyor line, and the conveying directions of the first conveyor line and the second conveyor line are opposite. The transfer conveyor line is configured to move up and down between the output end of the first conveyor line and the input end of the second conveyor line, and to dock with the output end of the first conveyor line or the input end of the second conveyor line; The first conveyor line is configured to convey a cassette filled with battery cells to the cell picking position, and to convey an empty cassette to the transfer conveyor line connected to the output end of the first conveyor line; The transfer conveyor is configured to transport the empty tin box to the second conveyor when it docks with the input end of the second conveyor; The second conveyor line is used to output the emptied hopper.

7. The battery stringing device as described in claim 5, characterized in that, The film-taking device includes a second driving mechanism, a second mounting bracket, and at least one third suction component, wherein: The second mounting bracket is connected to the drive end of the second drive mechanism; The third suction component is mounted on the second mounting bracket; The second drive mechanism is configured to drive the second mounting bracket to translate and lift, so as to drive each of the third suction components to suck up the battery cells from the material box and place the sucked battery cells onto the feeding conveyor line.

8. The battery stringing device as described in claim 7, characterized in that, The third suction component includes an adsorption component and a pressing unit, wherein both the adsorption component and the pressing unit are connected to the second mounting bracket; The adsorption component is configured to adsorb the battery cell. When the adsorption component places the battery cell onto the feeding conveyor line, the pressing unit is configured to press down on the middle of the battery cell to flatten it.

9. The battery stringing device as described in claim 1, characterized in that, The battery stringing equipment also includes a clamp conveyor line and a clamp removal device, wherein: The press conveyor line is configured to convey the press to the side of the welding strip placement position, and the handling device is configured to pick up the press from the press conveyor line; The clamp removal device is located after the series connection device. The clamp removal device is configured to return the clamp on the solder ribbon to the clamp conveyor line after the solder ribbon is fixed to the corresponding cell.

10. The battery stringing device as described in claim 1, characterized in that, The battery stringing equipment also includes a first solder strip guide device located at the solder strip placement position; The first ribbon guiding device includes at least a first guide plate, which is located above the junction of the buffer position and the ribbon placement position, and there is a first gap between the first guide plate and the conveying surface of the serial conveyor line for the battery cells to pass through. When the welding strip placement device pulls the welding strip group toward the welding strip placement position, the first guide plate is configured to guide the welding strip group. The first guide plate is provided with a plurality of first guide grooves, each of which is used to accommodate one welding strip in the welding strip group.

11. The battery stringing device as described in claim 10, characterized in that, The first guide plate is configured to move parallel to the conveying path of the tandem conveyor line to switch between a guiding position close to the welding strip placement position and an avoidance position away from the welding strip placement position. The first welding strip guiding device further includes a first support plate and a second support plate located on both sides of the welding strip placement position. The first support plate and the second support plate are configured to synchronously switch between a support position and a release position, wherein the support position is higher than the release position. After the welding strip assembly is pulled onto the battery cell at the welding strip placement position by the welding strip assembly, the tail end of the welding strip assembly is supported on the first guide plate at the guide position. When the first support plate and the second support plate rise to the support position, they respectively support the two end plates of the press that are placed on the welding strip group by the conveying device, so that the first type of pressure pins at both ends of the press do not contact the welding strip group, and the second type of pressure pin in the middle of the press presses the welding strip group to the battery cell. In the non-pressed state, the bottom surface of the first type of pressure pin is higher than the bottom surface of the second type of pressure pin. When the ribbon feeding device releases the first end of the ribbon group, the first guide plate is configured to move to the avoidance position to release the tail end of the ribbon group, and the first support plate and the second support plate are configured to descend synchronously to the release position so that the first type of pressure pins at both ends of the pressure fixture press the tail end and the first end of the ribbon group onto the battery cell respectively.

12. The battery stringing device as described in claim 11, characterized in that, The first welding strip guiding device further includes a first support arm, a second support arm, a first lifting assembly, a second lifting assembly, a first elastic clamping assembly, a second elastic clamping assembly, and a third driving mechanism, wherein: The first support arm and the second support arm are arranged opposite to each other on both sides of the serial conveyor line and are both connected to the third drive mechanism. The two ends of the first guide plate are respectively connected to the first support arm and the second support arm. The first support arm and the second support arm are provided with a first support surface and a second support surface in sequence in the direction away from the first guide plate, wherein the first support surface is higher than the second support surface. The third drive mechanism is configured to drive the first support arm and the second support arm to move parallel to the conveying path of the serial conveyor line, so as to drive the first guide plate to move and switch between the guiding position and the avoidance position. The first lifting assembly is slidably and vertically connected to the first side wall of the serial conveyor line, and the second lifting assembly is slidably and vertically connected to the second side wall of the serial conveyor line. The first support plate is connected to the first lifting assembly, and the second support plate is connected to the second lifting assembly. The first elastic clamping assembly is connected to the first side wall of the serial conveyor line, and the second elastic clamping assembly is connected to the second side wall of the serial conveyor line; When the first guide plate moves to the guide position, the first elastic pressing component is configured to elastically press the first lifting component onto the first support surface of the first support arm, and the second elastic pressing component is configured to elastically press the second lifting component onto the first support surface of the second support arm, with the first support plate and the second support located at the support position; When the first guide plate moves to the avoidance position, the first elastic pressing component is configured to elastically press the first lifting component onto the second support surface of the first support arm, and the second elastic pressing component is configured to elastically press the second lifting component onto the second support surface of the second support arm, with the first support plate and the second support located in the release position.

13. The battery stringing device as described in claim 12, characterized in that, The second lifting component has the same structure as the first lifting component, and the second elastic pressing component has the same structure as the first elastic pressing component; The first lifting assembly includes a slider and rollers. The slider is slidably and vertically connected to the first side wall of the serial conveyor line via a vertical slide rail. The rollers are disposed on the slider and supported on the first support arm. The first support plate is connected to the top of the slider. The first elastic clamping assembly includes a pressure block and a spring, wherein the pressure block is fixed on the first side wall of the serial conveyor line and located above the roller, the upper end of the spring abuts against the pressure block, and the lower end of the spring abuts against the slider; When the first guide plate moves from the avoidance position to the guide position, the roller slides from the second support surface of the first support arm to the first support surface of the first support arm, the slider slides upward, causing the first support plate to rise to the support position, and the spring is compressed. When the first guide plate moves from the guide position to the avoidance position, the roller slides from the first support surface of the first support arm to the second support surface of the first support arm, the spring loses pressure and rebounds, pushing the slider to slide downward, so that the first support plate descends to the release position.

14. The battery stringing device as described in claim 10, characterized in that, The battery stringing equipment further includes a second ribbon guiding device, which comprises a second guide plate and a fourth drive mechanism, wherein: The second guide plate is located above the serial conveyor line and in front of the first guide plate, and there is a second gap between the second guide plate and the conveying surface of the serial conveyor line for the battery cells to pass through; The second guide plate is connected to the fourth drive mechanism, which is configured to drive the second guide plate to move parallel to the conveying path of the serial conveyor line, so that the second guide plate moves and switches between a first intersection position away from the first guide plate and a second intersection position close to the first guide plate. When the second guide plate moves to the first junction position, the welding strip group pulled by the welding strip distribution device falls onto the second guide plate. When the second guide plate moves to the second junction position, the welding strip group transitions to the first guide plate under the traction of the welding strip distribution device. The second guide plate is provided with a plurality of second guide grooves, each of which is used to accommodate one of the welding strips in the welding strip group.

15. The battery stringing device as described in claim 14, characterized in that, The second welding strip guide device further includes a third support arm and a fourth support arm, wherein: The third support arm and the fourth support arm are arranged opposite to each other on both sides of the serial conveyor line and are both connected to the fourth drive mechanism. The two ends of the second guide plate are respectively connected to the third support arm and the fourth support arm. The fourth drive mechanism is configured to drive the third support arm and the fourth support arm to move parallel to the conveying path of the serial conveyor line, so as to drive the second guide plate to move and switch between the first junction position and the second junction position.

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