A battery string film insertion device and string welding machine

Abstract

The present invention provides a battery string film insertion device and a string welding machine, wherein the battery string film insertion device includes a film strip feeding mechanism, a film strip pulling roller group, a cutting bearing mechanism, a cutting mechanism and a film insertion mechanism, wherein: the film strip feeding mechanism is configured to fix the film strip material roll and drive the film strip material roll to rotate to realize material discharge; the film strip pulling roller group is configured to pull the film strip released by the film strip feeding mechanism to the cutting bearing mechanism along a first horizontal direction; the cutting mechanism is configured to cut the film strip carried on the cutting bearing mechanism along a second horizontal direction perpendicular to the first horizontal direction; the film insertion mechanism is configured to pick up the cut film strip from the cutting bearing mechanism and insert the picked up film strip between adjacent battery cells of the battery string. The present invention realizes automatic cutting of the film strip and automatically inserts the cut film strip into the battery string, thereby improving the film insertion efficiency.

Description

Technical Field

[0001] The invention relates to the field of battery production, in particular to a battery string film insertion device and a string welding machine. Background Art

[0002] After the cells are welded into strings with welding ribbons, they go through a series of post-processing processes and are finally laminated to form battery modules. During this process, the overlapping positions of adjacent cells in the battery string are prone to cracking and damage due to excessive rigid extrusion pressure.

[0003] In order to alleviate the rigid squeezing force between adjacent battery cells, the traditional solution is to manually cut a predetermined width of film strip from the film strip roll after the battery string welding is completed, and insert the cut film strip into the overlapping position of the adjacent battery cells in the battery string, and then heat the battery string after the film insertion to achieve the melting and solidification of the adhesive film. The traditional manual film insertion method is inefficient and has high labor costs. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a battery string membrane insertion device on one hand, and its specific technical solution is as follows:

[0005] A battery string film insertion device comprises a film strip feeding mechanism, a film strip pulling roller group, a cutting and carrying mechanism, a cutting mechanism and a film insertion mechanism, wherein:

[0006] The film tape feeding mechanism is configured to fix the film tape roll and drive the film tape roll to rotate to realize unloading;

[0007] The film tape pulling roller group is configured to pull the film tape released by the film tape feeding mechanism onto the cutting carrying mechanism along a first horizontal direction;

[0008] The cutting mechanism is configured to cut the film strip carried on the cutting carrying mechanism along a second horizontal direction perpendicular to the first horizontal direction;

[0009] The film inserting mechanism is configured to pick up the cut film tape from the cutting carrier mechanism and insert the picked up film tape between adjacent battery cells of the battery string.

[0010] Through the cooperation of the film strip feeding mechanism, the film strip pulling roller group, the cutting bearing mechanism, the cutting mechanism and the film inserting mechanism, the present invention realizes automatic cutting of the film strip and automatically inserts the cut film strip into the battery string, thereby improving the film insertion efficiency.

[0011] In some embodiments, the film tape traction roller group includes a first traction roller, a second traction roller and a traction roller driving device; the first traction roller and the second traction roller extend along the second horizontal direction, and a traction gap is provided between the first traction roller and the second traction roller for the film tape to pass through; the traction roller driving device is configured to drive the first traction roller and / or the second traction roller to rotate so as to drive the film tape to enter and pass through the traction gap.

[0012] Through the cooperation of the first traction roller, the second traction roller and the traction roller driving device, the film tape traction roller group achieves stable clamping and traction of the film tape.

[0013] In some embodiments, the cutting mechanism includes a first guide rail, a cutter mounting plate, a first drive motor, a rotary cutter, and a second drive motor, wherein: the first guide rail is arranged above the cutting support mechanism and extends along the second horizontal direction; the cutter mounting plate is slidably connected to the first guide rail and is transmission-connected to the driving end of the first drive motor, and the rotary cutter is connected to the lower end of the cutter mounting plate and is transmission-connected to the driving end of the second drive motor; the first drive motor is used to drive the cutter mounting plate to translate along the first guide rail to drive the rotary cutter to translate from the first end of the cutting support mechanism to the second end of the cutting support mechanism, and the second drive motor is used to drive the rotary cutter to rotate to implement cutting of the film tape carried on the cutting support mechanism.

[0014] A cutting mechanism with a simple structure is provided. Through the joint drive of a first drive motor and a second drive motor, a rotary cutter is translated from a first end of a cutting support mechanism to a second end of the cutting support mechanism, thereby realizing automatic cutting of a film strip carried on the cutting support mechanism.

[0015] In some embodiments, the cutting support mechanism includes a plurality of film tape adsorption plates arranged side by side and extending along the second horizontal direction, and the width of each film tape adsorption plate matches the width of the film tape to be cut; the rotary cutter includes a rotary knife shaft extending along the first horizontal direction and a plurality of rotary blades arranged side by side on the rotary knife shaft and corresponding one by one to the plurality of film tape adsorption plates; the film tape pulled out from the film tape traction roller group is adsorbed on each film tape adsorption plate, and after the rotary cutter completes cutting the film tape, a corresponding cut film tape is adsorbed on each film tape adsorption plate.

[0016] By setting the cutting support mechanism and the rotary cutter, the present invention can obtain multiple film strips with a predetermined width by performing one cutting action, thereby further improving the cutting efficiency.

[0017] In some embodiments, the battery string film insertion device further includes an adsorption plate opening mechanism, which is used to open each membrane strip adsorption plate to separate the cut membrane strips adsorbed on each membrane strip adsorption plate from each other.

[0018] By setting up the adsorption plate opening mechanism, the separation of the cut film strips adsorbed on each film strip adsorption plate is achieved, which facilitates the subsequent film strip unloading operation.

[0019] In some embodiments, a cutter avoidance groove is formed at the first end and / or the second end of the membrane tape adsorption plate, and when the rotating cutter is translated to the cutter avoidance groove, the rotating cutter is separated from the membrane tape adsorption plate.

[0020] It can be seen that by providing a cutter avoidance groove at the end of the film tape adsorption plate, the rotary cutter is separated from the film tape adsorption plate when it moves above the cutter avoidance groove. In this way, the opening operation of each adsorption plate can be implemented without lifting the rotary cutter upward.

[0021] In some embodiments, the membrane strip adsorption plate includes a first adsorption plate, a second adsorption plate and a third adsorption plate, and the adsorption plate opening mechanism includes a second guide rail, an adsorption plate driving mechanism, and a pulling belt, wherein: the second guide rail is arranged along the first horizontal direction; the first adsorption plate is fixedly connected to the second guide rail; the second adsorption plate is slidably connected to the second guide rail and connected to the driving end of the adsorption plate driving mechanism; the third adsorption plate is slidably connected to the second guide rail and is located between the first adsorption plate and the second adsorption plate; the pulling belt connects the first adsorption plate, the second adsorption plate and the third adsorption plate in sequence; when the adsorption plate driving mechanism drives the second adsorption plate to slide toward the first adsorption plate to the cutting position, the first adsorption plate, the second adsorption plate and the third adsorption plate are closed, and when the adsorption plate driving mechanism drives the second adsorption plate to slide away from the first adsorption plate to the opening position, the first adsorption plate, the second adsorption plate and the third adsorption plate are opened.

[0022] By adaptively setting the membrane tape adsorption plate and the adsorption plate opening mechanism, the opening operation of the membrane tape adsorption plate by the adsorption plate opening mechanism is realized.

[0023] In some embodiments, the battery string film insertion device further includes a guiding mechanism, which is located between the film tape feeding mechanism and the film tape traction roller group, and is used to guide the film tape released by the film tape feeding mechanism into the film tape traction roller group.

[0024] The guiding and caching of the film strip is achieved by setting up a guiding mechanism.

[0025] In some embodiments, the battery string film insertion device also includes a film tape flattening roller group arranged in front of the film tape traction roller group, and the film tape flattening roller group includes a first flattening roller and a second flattening roller; the first flattening roller and the second flattening roller extend along the second horizontal direction, and a flattening gap is provided between the first flattening roller and the second flattening roller for the film tape to pass through.

[0026] By setting a film strip flattening roller group, the flattening and shaping of the film strip is achieved.

[0027] In some embodiments, the film insertion device includes a frame, a moving mechanism, a mounting plate and a plurality of film insertion assemblies, wherein: the moving mechanism is arranged on the frame; the mounting plate is connected to the driving end of the moving mechanism; the plurality of film insertion assemblies are installed side by side on the mounting plate, and under the drive of the moving mechanism, each film insertion assembly picks up a film strip from the cutting and carrying mechanism and inserts the picked-up film strip between two adjacent battery cells of the battery string.

[0028] A film insertion device is provided, on which a plurality of film insertion assemblies are arranged side by side on a mounting plate. Driven by a moving mechanism, the film insertion device can synchronously insert a plurality of film strips into a battery string, thereby improving the film insertion efficiency and saving labor costs.

[0029] On the other hand, the present invention also provides a string welding machine, which includes a solder strip feeding device, a battery cell feeding device, a welding conveying device, a welding mechanism and any one of the above battery string film insertion devices, wherein: the solder strip feeding device and the battery cell feeding device stack the solder strip and the battery cell on the welding conveying device, the welding conveying device transports the stacked solder strip and battery cell to the welding station; the welding device welds the solder strip and the battery cell together; the battery string film insertion device inserts the film strip between adjacent battery cells of the battery string.

[0030] With the cooperation of the welding strip feeding device, the battery cell feeding device, the welding conveying device, the welding mechanism and the battery string film insertion device, the present invention can automatically insert the battery string after the battery string welding is completed, which significantly improves the production efficiency of the battery string. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the battery string membrane insertion device of the present invention at one viewing angle;

[0032] Figure 2 It is a schematic structural diagram of the battery string membrane insertion device of the present invention at two viewing angles;

[0033] Figure 3 It is a schematic diagram of the structure of the battery string membrane insertion device of the present invention at three viewing angles;

[0034] Figure 4 It is a schematic diagram of the assembly structure of the film strip pulling roller group, the cutting and carrying mechanism, and the cutting mechanism in the battery string film insertion device of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the membrane insertion mechanism in the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the membrane insertion assembly in the present invention;

[0037] Figure 7 It is a schematic structural diagram of the membrane tape adsorption plate in the present invention;

[0038] Figures 1 to 7 Included:

[0039] A mounting frame 10, a first mounting plate 11, and a second mounting plate 12;

[0040] Film tape feeding mechanism 20;

[0041] Guiding mechanism 30;

[0042] Film belt flattening roller group 40;

[0043] Film tape pulling roller group 50;

[0044] A cutting support mechanism 60, a first adsorption plate 61, a second adsorption plate 62, a third adsorption plate 63, and a cutter avoidance groove 611;

[0045] Cutting mechanism 70, first guide rail 71, cutter mounting plate 72, first drive motor 73, rotary cutter 74, second drive motor 75;

[0046] Adsorption plate opening mechanism 80, second guide rail 81, adsorption plate driving mechanism 82, pulling belt 83;

[0047] Film insertion mechanism 90, frame 91, lifting mechanism 92, translation mechanism 93, mounting plate 94, film insertion assembly 95, lifting guide rail 921, lifting drive mechanism 922, lifting connecting rod 923, translation guide rail 931, rack 932, rotating motor 933, battery cell pulling assembly 951, battery cell pressing assembly 952, film insertion mechanism 953. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] After the battery cells are welded into strings with welding ribbons, they go through a series of post-processing processes and are finally laminated to form battery modules. During this process, the overlapping positions of adjacent battery cells in the battery string are prone to cracking and breakage due to excessive rigid extrusion pressure. In order to alleviate the rigid extrusion force between adjacent battery cells, the traditional solution is to manually cut a film strip of a predetermined width from the film strip roll after the battery string welding is completed, and insert the cut film strip into the overlapping position of adjacent battery cells in the battery string, and then heat the battery string after the film insertion to achieve the melting and solidification of the adhesive film. The manual film insertion method is inefficient and has high labor costs.

[0050] In view of this, the present invention provides a battery string film insertion device, which is used to realize automatic cutting of the film strip and automatically insert the cut film strip into the battery string sheet, thereby improving the film insertion efficiency.

[0051] like Figures 1 to 3 As shown, the battery string film insertion device provided by the embodiment of the present invention includes a film strip feeding mechanism 20, a film strip pulling roller group 50, a cutting and carrying mechanism 60, a cutting mechanism 70 and a film insertion mechanism, wherein:

[0052] The film tape feeding mechanism 20 is configured to fix the film tape roll and drive the film tape roll to rotate to achieve unloading.

[0053] The film tape pulling roller group 50 is configured to pull the film tape released by the film tape feeding mechanism 20 onto the cutting and carrying mechanism 60 along a first horizontal direction (such as the X-axis direction in the figure).

[0054] The cutting mechanism 70 is configured to cut the film tape carried on the cutting carrying mechanism 60 along a second horizontal direction (eg, the Y-axis direction in the figure) perpendicular to the first horizontal direction.

[0055] The film inserting mechanism is configured to pick up the cut film tape from the cutting carrier mechanism 60 and insert the picked up film tape between adjacent battery cells of the battery string.

[0056] It can be seen that through the cooperation of the film tape feeding mechanism 20, the film tape traction roller group 50, the cutting and carrying mechanism 60, the cutting mechanism 70 and the film insertion mechanism, the battery string film insertion device of the present invention realizes automatic cutting of the film tape, and automatically inserts the cut film tape into the battery string piece, which significantly improves the film insertion efficiency.

[0057] Optionally, the film tape traction roller group 50 includes a first traction roller, a second traction roller and a traction roller driving device. The first traction roller and the second traction roller extend along the second horizontal direction, and a traction gap is provided between the first traction roller and the second traction roller for the film tape to pass through. The traction roller driving device drives the first traction roller and the second traction roller to rotate, so as to drive the film tape to enter and pass through the traction gap.

[0058] It can be seen that, under the drive of the traction roller driving device, the first traction roller and the second traction roller cooperate to clamp the film tape and pull the film tape onto the cutting support mechanism 60.

[0059] Optional, such as Figure 4As shown, the cutting mechanism 70 includes a first guide rail 71, a cutter mounting plate 72, a first drive motor 73, a rotary cutter 74 and a second drive motor 75, wherein: the first guide rail 71 is arranged above the cutting support mechanism 60 and extends along the second horizontal direction. The cutter mounting plate 72 is slidably connected to the first guide rail 71 and is in driving connection with the driving end of the first drive motor 73, and the rotary cutter 74 is connected to the lower end of the cutter mounting plate 72 and is in driving connection with the driving end of the second drive motor 75. The first drive motor 73 is used to drive the cutter mounting plate 72 to translate along the first guide rail 71 to drive the rotary cutter 74 to translate from the first end of the cutting support mechanism 60 to the second end of the cutting support mechanism 60, and the second drive motor 75 is used to drive the rotary cutter 74 to rotate to implement cutting of the film tape carried on the cutting support mechanism 60.

[0060] The cutting process of the film strip by the cutting mechanism 70 is as follows:

[0061] First, the first driving motor 73 drives the rotary cutter 74 to translate to the first end of the cutting and carrying mechanism 60 , waiting for the film tape pulling roller group 50 to pull the film tape to the cutting and carrying mechanism 60 .

[0062] After the film tape traction roller group 50 pulls the film tape onto the cutting support mechanism 60, the first drive motor 73 drives the rotary cutter 74 to translate from the first end of the cutting support mechanism 60 to the second end of the cutting support mechanism 60. Synchronously, the second drive motor 75 drives the rotary cutter 74 to rotate at high speed, so that the film tape carried on the cutting support mechanism 60 is cut by the rotary cutter 74.

[0063] Optionally, the cutting support mechanism 60 includes a plurality of film tape adsorption plates arranged side by side and extending along the second horizontal direction. In particular, the width of each film tape adsorption plate matches the width of the film tape to be cut. Correspondingly, the rotary cutter 74 includes a rotary cutter shaft extending along the first horizontal direction and a plurality of rotary blades arranged side by side on the rotary cutter shaft and corresponding to the plurality of film tape adsorption plates. Figure 3 In the illustrated embodiment, there are four film tape adsorption plates in total, and correspondingly, the rotary cutter 74 includes four rotary blades. Specifically, there is a rotary blade corresponding to the side of the film tape adsorption plate between adjacent film tape adsorption plates and close to the film tape traction roller group 50.

[0064] When the film tape pulling roller group 50 pulls the film tape onto the cutting support mechanism 60, each film tape suction plate sucks the film tape tightly. Then, the rotary cutter 74 cuts the film tape under the cooperative drive of the first drive motor 73 and the second drive motor 75. After the cutting is completed, each film tape suction plate correspondingly sucks a cut film tape, and the width of the cut film tape is the same as the width of the film tape suction plate.

[0065] It can be seen that by configuring the cutting support mechanism 60 and the rotary cutter 74 as described above, the battery string film insertion device of the present invention can obtain multiple film strips each time a cutting action is performed, thereby further improving the cutting efficiency. Figure 3 In the illustrated embodiment, the battery string film insertion device can obtain four film strips by performing one cutting action.

[0066] Optionally, the battery string film insertion device of the present invention further includes an adsorption plate opening mechanism 80, which is used to open each film strip adsorption plate so that the cut film strips adsorbed on each film strip adsorption plate are separated from each other. That is, after the rotary cutter 74 completes the cutting of the film strip, the adsorption plate opening mechanism 80 drives each film strip adsorption plate to separate from each other, so that the film strips adsorbed on each film strip adsorption plate are completely separated, so as to facilitate the unloading mechanism to pick up and unload each film strip.

[0067] like Figure 3 As shown, optionally, the membrane strip adsorption plate includes a first adsorption plate 61, a second adsorption plate 62 and two third adsorption plates 63. The adsorption plate opening mechanism 80 includes a second guide rail 81, an adsorption plate driving mechanism 82 and a pulling belt 83. Wherein: the second guide rail 81 is arranged along the first horizontal direction, and the first adsorption plate 61 is fixedly connected to the second guide rail 81. The second adsorption plate 62 is slidably connected to the second guide rail 81 and is connected to the driving end of the adsorption plate driving mechanism 82. The two third adsorption plates 63 are slidably connected to the second guide rail 81 and are located between the first adsorption plate 61 and the second adsorption plate 62. The pulling belt 83 sequentially connects the first adsorption plate 61, the two third adsorption plates 63 and the second adsorption plate 62.

[0068] When the suction plate driving mechanism 82 drives the second suction plate 62 to slide toward the first suction plate 61 to the cutting position, the first suction plate 61, the second suction plate 62 and the two third suction plates 63 are completely closed together to form a complete bearing surface, and the cutting operation can be performed at this time. After the cutting is completed, the suction plate driving mechanism 82 drives the second suction plate 62 to slide toward the open position away from the first suction plate 61, and the pulling belt 83 is tightened to drive the two third suction plates 63 to slide away from the first suction plate 61, and finally the first suction plate 61, the second suction plate 62 and the two third suction plates 63 are completely opened.

[0069] Of course, in a specific embodiment, one, three or other numbers of third adsorption plates 63 may be provided accordingly according to the number of film strips to be cut.

[0070] like Figure 7As shown, optionally, a cutter avoidance groove is formed at the first end and the second end of each film tape adsorption plate. Taking the first adsorption plate 61 as an example, during the cutting process, the rotating blade of the rotating cutter 74 corresponding to the first adsorption plate 61 abuts against the first adsorption plate 61, and when the rotating cutter 74 translates to the cutter avoidance groove 611 at the first end or the second end of the first adsorption plate 61, the rotating blade is separated from the first adsorption plate 61.

[0071] It can be seen that by providing a cutter avoidance groove at the end of each film tape adsorption plate, the rotary cutter is separated from the film tape adsorption plate when it moves to the cutter avoidance groove at the end of the film tape adsorption plate. In this way, after the cutting operation is completed, each film tape adsorption plate can be smoothly opened without lifting the rotary cutter upward.

[0072] Optional, such as Figure 2 As shown, the battery string film insertion device of the present invention further includes a guiding mechanism 30, which is located between the film strip feeding mechanism 20 and the film strip pulling roller group 50, and the guiding mechanism 30 is used to guide the film strip released by the film strip feeding mechanism 20 into the film strip pulling roller group 50. Optionally, the guiding mechanism 30 is composed of a plurality of guide rollers, and the film strip released by the film strip feeding mechanism 20 passes around each guide roller in turn and enters the film strip pulling roller group 50.

[0073] Optional, such as Figure 4 As shown, the battery string film insertion device of the present invention also includes a film strip flattening roller group 40 arranged in front of the film strip pulling roller group 50, and the film strip flattening roller group 40 includes a first flattening roller and a second flattening roller. The first flattening roller and the second flattening roller extend along the second horizontal direction, and a flattening gap for the film strip to pass through is provided between the first flattening roller and the second flattening roller. The film strip released from the film strip feeding mechanism 20 enters the film strip pulling roller group 50 only after passing through the flattening gap. That is, by providing the film strip flattening roller group 40, the film strip can be flattened and shaped before cutting.

[0074] Continue to refer Figure 2 As shown, optionally, the battery string film insertion device of the present invention further includes a mounting frame 10, and the mounting frame 10 includes a first mounting plate 11 and a second mounting plate 12 arranged perpendicularly to each other. Among them, the film strip feeding mechanism 20, the guiding mechanism 30 and other components are arranged on the first mounting plate 11, and the film strip flattening roller group 40, the film strip pulling roller group 50, the cutting bearing mechanism 60, the cutting mechanism 70 and other components are arranged on the second mounting plate 12.

[0075] like Figure 5As shown, optionally, the film insertion device 90 provided in the embodiment of the present invention comprises a frame 91, a moving mechanism, a mounting plate 94 and a plurality of film insertion assemblies 95, wherein: the moving mechanism is arranged on the frame 91, and the mounting plate 94 is connected to the driving end of the moving mechanism. The plurality of film insertion assemblies 95 are installed side by side on the mounting plate 94, and under the drive of the moving mechanism, each film insertion assembly 95 picks up a film strip from the cutting and carrying mechanism 60 and inserts the picked-up film strip between two adjacent battery cells of the battery string.

[0076] Optionally, the moving mechanism includes a lifting mechanism 92 and a translation mechanism 93, wherein: the lifting mechanism 92 is used to drive the mounting plate 94 to lift and lower to drive each film insertion component 95 to lift and lower synchronously, and the translation mechanism 93 is used to drive the mounting plate 94 to translate to drive each film insertion component 95 to translate synchronously.

[0077] Optionally, the lifting mechanism 92 includes a lifting rail 921, a lifting drive mechanism 922 and a lifting connecting rod 923, wherein: the lifting rail 921 and the lifting drive mechanism 922 are arranged on the frame 91; the lifting connecting rod 923 is slidably connected to the lifting rail 921 via a first slider and is connected to the driving end of the lifting drive mechanism 922. The mounting plate 94 is connected to the lower end of the lifting connecting rod 923, and the lifting drive mechanism 922 drives the lifting connecting rod 923 to move up and down along the lifting rail 921 to drive the mounting plate 94 to move up and down, thereby driving each membrane insertion assembly 95 to move up and down synchronously.

[0078] Optionally, the translation mechanism 93 includes a translation guide rail 931, a rack 932 and a rotary motor 933, wherein: the translation guide rail 931 is arranged on the mounting plate 94, and the lower end of the lifting link 923 is slidably connected to the translation guide rail 931 via a second slider. The rack 932 is arranged on the mounting plate 94 and is parallel to the translation guide rail 931. The rotary motor 933 is connected to the frame 91, and a gear meshing with the rack 932 is arranged at the driving end of the rotary motor 933. The rotary motor 933 drives the mounting plate 94 to translate via the gear and the rack 932, thereby driving each membrane insertion assembly 95 to translate synchronously.

[0079] like Figure 6 As shown, the film insertion assembly 95 includes a battery string opening mechanism and a film insertion mechanism 953, wherein: the battery string opening mechanism is used to open two adjacent battery sheets on the battery string so that a film insertion gap is formed between the overlapping parts of the two adjacent battery sheets. The film insertion mechanism 953 is used to insert the film strip into the film insertion gap.

[0080] Optionally, the battery string opening mechanism includes a battery cell pulling assembly 951 and a battery cell pressing assembly 952, wherein: the battery cell pulling assembly 951 is used to pull the stacked battery cell of two adjacent battery cells upward, and the battery cell pressing assembly 952 is used to press the stacked battery cell of two adjacent battery cells downward.

[0081] Please continue to refer to Figure 6 As shown, the detailed membrane insertion process of the membrane insertion assembly 95 is as follows:

[0082] Driven by the moving mechanism, the film inserting assembly 95 moves to the cutting and carrying mechanism 60 , and the film inserting mechanism 953 picks up a film tape from the cutting and carrying mechanism 60 .

[0083] Then, driven by the moving mechanism, the film insertion assembly 95 moves to the battery string to be inserted, so that the battery cell pulling assembly 951 is located on the upper battery cell 101 of the two adjacent battery cells, and the battery cell pressing assembly 952 is located on the lower battery cell 102 of the two adjacent battery cells.

[0084] Subsequently, the cell pull-up assembly 951 pulls the cell 101 upward, and the cell press-down assembly 952 presses the cell 102 downward, so that a film insertion gap is formed between the cell 101 and the cell 102 .

[0085] Finally, the film inserting mechanism 953 inserts the carried film tape into the film inserting gap.

[0086] Optionally, the battery cell pulling assembly 951 includes a first lifting drive cylinder and a first suction cup connected to the driving end of the first lifting drive cylinder, and the first lifting drive cylinder drives the first suction cup to lift and lower to implement the adsorption and pulling of the battery cell 101 stacked on top of two adjacent battery cells.

[0087] Optionally, the battery cell pressing assembly 952 includes a second lifting drive cylinder and a pressure plate connected to the driving end of the second lifting drive cylinder, and the second lifting drive cylinder drives the pressure plate to rise and fall to press the battery cell 102 stacked below two adjacent battery cells.

[0088] Optionally, the film insertion mechanism 953 includes a translation drive and a second suction cup connected to the driving end of the translation drive, the second suction cup is used to adsorb the film strip, and the translation drive is used to drive the second suction cup to translate so as to insert the film strip adsorbed on the second suction cup into the film insertion gap.

[0089] The present invention also provides a string welding machine, which includes a solder strip feeding device, a battery cell feeding device, a welding conveying device, a welding mechanism and a battery string film insertion device provided in any of the above embodiments, wherein: the solder strip feeding device and the battery cell feeding device stack the solder strip and the battery cell on the welding conveying device, the welding conveying device transports the stacked solder strip and the battery cell to the welding station; the welding device welds the solder strip and the battery cell together; and the battery string film insertion device inserts the film strip between adjacent battery cells of the battery string.

[0090] It can be seen that with the cooperation of the welding tape feeding device, the battery cell feeding device, the welding conveying device, the welding mechanism and the battery string film insertion device, the string welding machine of the present invention completes the automatic film insertion of the battery string after completing the battery string welding, which significantly improves the production efficiency of the battery string.

[0091] The present invention has been described in sufficient detail with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present invention should fall within the scope of protection of the present invention. The scope of protection claimed by the present invention is defined by the claims, rather than by the above description in the embodiments. Moreover, the embodiments mentioned in this application are not limited to being implemented individually, and some embodiments can also be implemented in combination.

Claims

1. A battery string membrane insertion device, characterized in that: The battery string film insertion device comprises a film strip feeding mechanism, a film strip pulling roller group, a cutting and carrying mechanism, a cutting mechanism and a film insertion mechanism, wherein: The film tape feeding mechanism is configured to fix the film tape roll and drive the film tape roll to rotate to realize material discharge; The film tape pulling roller group is configured to pull the film tape released by the film tape feeding mechanism onto the cutting and carrying mechanism along a first horizontal direction; The cutting mechanism is configured to cut the film strip carried on the cutting carrying mechanism along a second horizontal direction perpendicular to the first horizontal direction; The film inserting mechanism is configured to pick up the cut film tape from the cutting and carrying mechanism, and insert the picked-up film tape between adjacent battery cells of the battery string; The film tape traction roller group comprises a first traction roller, a second traction roller and a traction roller driving device; The first traction roller and the second traction roller extend along the second horizontal direction, and a traction gap for the film tape to pass through is provided between the first traction roller and the second traction roller; The traction roller driving device is configured to drive the first traction roller and / or the second traction roller to rotate, so as to drive the film tape to enter and pass through the traction gap; The cutting mechanism comprises a first guide rail, a cutter mounting plate, a first drive motor, a rotating cutter, and a second drive motor, wherein: The first guide rail is disposed above the cutting and carrying mechanism and extends along the second horizontal direction; The cutter mounting plate is slidably connected to the first guide rail and is drivingly connected to the driving end of the first driving motor, and the rotary cutter is connected to the lower end of the cutter mounting plate and is drivingly connected to the driving end of the second driving motor; The first drive motor is used to drive the cutter mounting plate to translate along the first guide rail to drive the rotary cutter to translate from the first end of the cutting support mechanism to the second end of the cutting support mechanism, and the second drive motor is used to drive the rotary cutter to rotate to cut the film tape carried on the cutting support mechanism.

2. The battery string membrane insertion device according to claim 1, characterized in that: The cutting and carrying mechanism comprises a plurality of film tape adsorption plates arranged side by side and extending along the second horizontal direction, and the width of each of the film tape adsorption plates matches the width of the film tape to be cut; The rotary cutter includes a rotary cutter shaft extending along the first horizontal direction and a plurality of A rotating blade on the rotating blade shaft and corresponding to the plurality of film tape adsorption plates one by one; The film tape pulled out from the film tape pulling roller group is adsorbed on each of the film tape adsorption plates. After the rotary cutter completes cutting of the film tape, a corresponding cut film tape is adsorbed on each of the film tape adsorption plates.

3. The battery string membrane insertion device according to claim 2, characterized in that: The battery string film insertion device further comprises an adsorption plate opening mechanism, which is used to open each of the membrane strip adsorption plates so as to separate the cut membrane strips adsorbed on each of the membrane strip adsorption plates from each other.

4. The battery string membrane insertion device according to claim 3, characterized in that: A cutter avoidance groove is formed at the first end and / or the second end of the film tape adsorption plate. When the rotating cutter is translated to the cutter avoidance groove, the rotating cutter is separated from the film tape adsorption plate.

5. The battery string membrane insertion device according to claim 3, characterized in that: The film tape adsorption plate includes a first adsorption plate, a second adsorption plate and at least one third adsorption plate, and the adsorption plate opening mechanism includes a second guide rail, an adsorption plate driving mechanism, and a pulling belt, wherein: The second guide rail is arranged along the first horizontal direction; The first adsorption plate is fixedly connected to the second guide rail; The second adsorption plate is slidably connected to the second guide rail and is connected to the driving end of the adsorption plate driving mechanism; The third adsorption plate is slidably connected to the second guide rail and is located between the first adsorption plate and the second adsorption plate; The pulling belt sequentially connects the first adsorption plate, the second adsorption plate and the third adsorption plate; When the adsorption plate driving mechanism drives the second adsorption plate to slide toward the first adsorption plate to the cutting position, the first adsorption plate, the second adsorption plate and the third adsorption plate are closed. When the adsorption plate driving mechanism drives the second adsorption plate to slide away from the first adsorption plate to the open position, the first adsorption plate, the second adsorption plate and the third adsorption plate are opened.

6. The battery string membrane insertion device according to claim 1, characterized in that: The battery string film insertion device also includes a guiding mechanism, which is located between the film tape feeding mechanism and the film tape traction roller group, and is used to guide the film tape released by the film tape feeding mechanism into the film tape traction roller group.

7. The battery string membrane insertion device according to claim 1, characterized in that: The battery string film insertion device also includes a film strip flattening roller group arranged in front of the film strip pulling roller group, and the film strip flattening roller group includes a first flattening roller and a second flattening roller; The first flattening roller and the second flattening roller extend along the second horizontal direction, and a flattening gap for the film tape to pass through is provided between the first flattening roller and the second flattening roller.

8. The battery string membrane insertion device according to claim 1, characterized in that: The film insertion device comprises a frame, a moving mechanism, a mounting plate and a plurality of film insertion components, wherein: The moving mechanism is arranged on the frame; The mounting plate is connected to the driving end of the moving mechanism; The plurality of film insertion assemblies are installed side by side on the mounting plate. Driven by the moving mechanism, each of the film insertion assemblies picks up a film strip from the cutting and carrying mechanism and inserts the picked-up film strip between two adjacent battery cells in the battery string.

9. A string welding machine, characterized in that: The string welding machine comprises a welding ribbon feeding device, a battery cell feeding device, a welding conveying device, a welding mechanism and a battery string film insertion device according to any one of claims 1 to 8, wherein: The solder strip feeding device and the battery cell feeding device stack the solder strips and the battery cells on the welding conveying device, and the welding conveying device conveys the stacked solder strips and the battery cells to the welding station; The welding mechanism welds the welding ribbon and the battery cell together; The battery string film inserting device inserts the film strip between adjacent battery sheets of the battery string.

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