Bus bar cutting mechanism and bus bar preparation device

Abstract

The invention provides a bus bar cutting mechanism and a bus bar preparation device.The bus bar cutting mechanism comprises a bottom plate, a bus bar guide assembly, a transverse movement driving mechanism, a transverse movement mounting frame, a female die mounting plate, a male die mounting plate and a lifting driving mechanism, and the transverse movement mounting frame is slidably mounted on the bottom plate and is in transmission connection with the transverse movement driving mechanism; one of the male die mounting plate and the female die mounting plate is fixed to the transverse moving mounting frame, and the other one is in transmission connection with the lifting driving mechanism. The female die mounting plate is provided with a right-angle cavity and a round-corner cavity; a right-angle male die and a fillet male die are arranged on the male die mounting plate; the transverse movement driving mechanism is used for driving the transverse movement mounting frame to move so as to drive the right-angle cavity and the right-angle male die or the round-corner cavity and the round-corner male die to move to the upper side and the lower side of a bus bar to be cut, and the bus bar with a right-angle end or a round-corner end can be cut. The bus bar cutting mechanism is high in cutting efficiency and low in cutting cost.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic module preparation, and specifically to a busbar cutting mechanism and a busbar preparation device. Background Art

[0002] During the production of photovoltaic modules, one of the processes is to weld busbars to the ends of the arranged battery strings. Before welding the busbars, the rolled busbars need to be cut into busbar segments of a certain length. For busbars with different positions on the battery string and different process requirements, there will be different requirements for the cutting shape of the busbar ends. Some busbars require both ends to be cut into right angles, some require both ends to be cut into rounded corners, and some require one end to be cut into a right angle and the other end to be rounded.

[0003] The existing busbar cutting mechanism has a single function and cannot meet the different cutting requirements of the busbar. Therefore, the existing busbar cutting method is to sequentially set up multiple cutting mechanisms with different cutting functions to complete the corresponding cutting operations in sequence. The existing busbar cutting method has low cutting efficiency and high cutting cost. Summary of the invention

[0004] In view of the above technical problems existing in the existing busbar cutting mechanism, the present application provides a busbar cutting mechanism, and its detailed technical solution is as follows:

[0005] A busbar cutting mechanism comprises a bottom plate, a busbar guide assembly, a lateral drive mechanism, a lateral mounting frame, a concave die mounting plate, a convex die mounting plate and a lifting drive mechanism, wherein:

[0006] The busbar guide assembly is fixedly arranged relative to the bottom plate, and the busbar guide assembly is used to limit the busbar to be cut from moving along a first horizontal direction;

[0007] The transverse moving mounting frame is slidably mounted on the bottom plate, and the transverse moving driving mechanism is arranged on the bottom plate and is drivingly connected to the transverse moving mounting frame;

[0008] The male die mounting plate and the female die mounting plate are arranged up and down and one of them is fixedly mounted on the transverse mounting frame, the lifting drive mechanism is mounted on the transverse mounting frame and is drivingly connected to the other of the male die mounting plate and the female die mounting plate, and a conveying space for the busbar to be cut to pass through is formed between the male die mounting plate and the female die mounting plate;

[0009] The female mold mounting plate has a right-angled cavity and a rounded cavity spaced along a second horizontal direction, and the second horizontal direction is not parallel to the first horizontal direction; the male mold mounting plate has a right-angled punch and a rounded punch spaced along the second horizontal direction; the lifting drive mechanism is used to drive the male mold mounting plate and the female mold mounting plate to move closer to or farther from each other, so that the right-angled punch and the right-angled cavity are molded or separated, and the rounded punch and the rounded cavity are molded or separated;

[0010] The transverse driving mechanism is used to drive the transverse mounting frame to move, so as to drive the right-angle cavity and the right-angle punch to move to the upper and lower sides of the busbar to be cut, and when the right-angle punch is molded with the right-angle cavity, the busbar with a right-angle end is cut out;

[0011] The transverse drive mechanism is also used to drive the transverse mounting frame to move, so as to drive the rounded corner cavity and the rounded corner punch to move to the upper and lower sides of the busbar to be cut. When the rounded corner punch is molded with the rounded corner cavity, a busbar with a rounded end is cut.

[0012] According to the cutting requirements of the busbars, the busbar cutting mechanism provided by the present application can at least cut three types of busbars: one with right angles at both ends, one with rounded angles at both ends, and one with right angles and one with rounded angles. Compared with the existing cutting method of completing the corresponding cutting operations in sequence through multiple cutting mechanisms, the busbar cutting mechanism of the present application improves the cutting efficiency and reduces the cutting cost.

[0013] In some embodiments, a straight first static cutting edge is provided on the first side wall of the right-angle cavity, and a straight second static cutting edge is provided on the second side wall of the right-angle cavity; a straight first dynamic cutting edge and a straight second dynamic cutting edge are respectively provided on opposite sides of the lower end of the right-angle punch, the first dynamic cutting edge matches the first static cutting edge, and the second dynamic cutting edge matches the second static cutting edge; when the right-angle punch is molded with the right-angle cavity, the first static cutting edge and the first dynamic cutting edge cooperate to cut the bus bar from the first position, and the second static cutting edge and the second dynamic cutting edge cooperate to cut the bus bar from the second position.

[0014] By setting the right-angle cavity and the right-angle punch, when the right-angle punch is molded with the right-angle cavity, a bus bar with a right-angle end can be automatically cut out, and two bus bars with right-angle ends can be obtained at the same time through one cutting, thereby improving cutting efficiency.

[0015] In some embodiments, a third static cutting blade with an arc shape protruding into the rounded corner cavity is provided on the first side wall of the rounded corner cavity, and a fourth static cutting blade with an arc shape protruding into the rounded corner cavity is provided on the second side wall of the rounded corner cavity; a third dynamic cutting blade with an arc shape protruding into the rounded corner cavity is provided on opposite sides of the rounded corner punch, respectively, and the third dynamic cutting blade matches the third static cutting blade, and the fourth dynamic cutting blade matches the fourth static cutting blade; when the rounded corner punch is molded with the rounded corner cavity, the third static cutting blade and the third dynamic cutting blade cooperate to cut the bus bar from the first position, and the fourth static cutting blade and the fourth dynamic cutting blade cooperate to cut the bus bar from the second position.

[0016] By setting the rounded cavity and the rounded punch, when the rounded punch is molded with the rounded cavity, a bus bar with a rounded end can be automatically cut out, and two bus bars with rounded ends can be obtained at the same time through one cutting, thereby improving cutting efficiency.

[0017] In some embodiments, the busbar cutting mechanism also includes a lifting guide rod, wherein: the lifting guide rod is arranged in a vertical direction, one end of the lifting guide rod is fixedly connected to one of the die mounting plate and the punch mounting plate, and the other end of the lifting guide rod is slidably connected to the other of the die mounting plate and the punch mounting plate.

[0018] By setting a lifting guide rod, the lifting and guiding of the die mounting plate or the punch mounting plate is realized, thereby ensuring the precise mold fitting of the right-angle punch and the right-angle cavity, and the precise mold fitting of the rounded corner punch and the rounded corner cavity.

[0019] In some embodiments, the busbar cutting mechanism also includes a pressing block and an elastic buffer assembly, wherein: the pressing block is connected to the punch mounting plate via the elastic buffer assembly and is located below the punch mounting plate, and the pressing block is provided with a right-angle through hole for the lower end of the right-angle punch to pass through, and a rounded through hole for the lower end of the rounded punch to pass through; when the lifting drive mechanism drives the punch mounting plate and the die mounting plate to approach, the pressing block elastically presses the busbar against the upper end surface of the die mounting plate, and the lower end of the right-angle punch and the lower end of the rounded punch respectively pass through the right-angle through hole and the rounded through hole and then penetrate into the right-angle cavity and the rounded cavity.

[0020] When the lifting drive mechanism drives the punch mounting plate and the die mounting plate to move closer, the pressing block first elastically presses the busbar against the upper end surface of the die mounting plate, and then the lower end of the right-angle punch and the lower end of the rounded-angle punch are inserted into the right-angle cavity and the rounded-angle cavity to cut the busbar. In this way, the cut end of the busbar can be effectively prevented from warping during cutting.

[0021] In some embodiments, the elastic buffer assembly includes a guide column and a spring, wherein: the lower end of the guide column is fixedly connected to the pressure block, and the upper end of the guide column is slidably connected to the punch mounting plate; the spring is sleeved on the guide column, wherein the lower end of the spring abuts against the pressure block, and the upper end of the spring abuts against the punch mounting plate.

[0022] Provided is an implementation structure of an elastic buffer assembly, which can realize elastic compression of a pressing block on a bus bar through elastic deformation of a spring.

[0023] In some embodiments, the busbar guide assembly includes a connecting plate, a first guide wheel and a second guide wheel, wherein: the lower end of the connecting plate is fixedly connected to the base plate; the first guide wheel and the second guide wheel are arranged side by side at the upper end of the connecting plate, and a guide gap is formed between the first guide wheel and the second guide wheel for the busbar to be cut to pass through.

[0024] A busbar guide assembly with a simple structure is provided, which can guide the busbar and restrict the busbar to be cut from moving along a first horizontal direction.

[0025] In some embodiments, the die mounting plate, the transverse mounting frame and the bottom plate are respectively provided with a first blanking hole connected to the right-angle cavity and a second blanking hole connected to the rounded cavity.

[0026] By setting a first blanking hole below the right-angle cavity, the waste material cut off by the right-angle punch and the right-angle cavity falls into the first blanking hole, thereby preventing the right-angle cavity from being occupied by waste material and affecting the next cutting. Similarly, by setting a second blanking hole below the rounded cavity, the waste material cut off by the rounded punch and the rounded cavity falls into the second blanking hole, thereby preventing the rounded cavity from being occupied by waste material and affecting the next cutting.

[0027] In some embodiments, the die mounting plate also has a first punch hole and a second punch hole arranged on both sides of the right-angle cavity or the rounded cavity along the first horizontal direction; the punch mounting plate is provided with a first punch matching the first punch hole and a second punch matching the second punch hole.

[0028] By arranging the first punch hole and the second punch hole on the die mounting plate, and arranging the first punch and the second punch head respectively matching the first punch hole and the second punch hole on the die mounting plate, the punch holes are formed at the ends of the cut busbar segments.

[0029] The present application also provides a busbar preparation device, which includes a feeding mechanism, a pressing mechanism, a traction mechanism and any of the above busbar cutting mechanisms, wherein:

[0030] The unloading mechanism is used to release the busbar;

[0031] The traction mechanism is used to traction the busbar released by the discharge mechanism, so that the busbar passes through the pressing mechanism and the busbar cutting mechanism in sequence;

[0032] The pressing mechanism is used to press the busbar, and the busbar cutting mechanism is used to cut the pressed busbar to obtain a busbar segment with a predetermined length. The cut busbar segment has at least one of a rounded end and a right-angled end.

[0033] Through the cooperation of the unloading mechanism, the pressing mechanism, the busbar cutting mechanism and the traction mechanism, the busbar preparation device realizes the automatic preparation of busbars with both ends being right angles, both ends being rounded, or one end being right angle and the other end being rounded. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the busbar cutting mechanism in an embodiment of the present application at one viewing angle;

[0035] Figure 2 is a schematic structural diagram of the busbar cutting mechanism in the embodiment of the present application from another perspective;

[0036] Figure 3 for Figure 2 DD cross-sectional view;

[0037] Figure 4 for Figure 3 BB cross-sectional view;

[0038] Figure 5 It is a schematic diagram of the structure of the concave mold mounting plate in the embodiment of the present application;

[0039] Figure 6 It is a schematic diagram of the structure of the right-angle punch in the embodiment of the present application;

[0040] Figure 7 It is a schematic structural diagram of the rounded corner punch, the first punch and the second punch in the embodiment of the present application;

[0041] Figure 8 A schematic diagram of the structure of a battery string group consisting of 6 groups of 12 half-cell battery strings;

[0042] Fig. 9 A schematic diagram of a bus bar cutting process performed by a bus bar cutting mechanism in an embodiment of the present application;

[0043] Figures 1 to 9 Included:

[0044] Bottom plate 1;

[0045] Busbar guide assembly 2:

[0046] A connecting plate 21, a first guide wheel 22, and a second guide wheel 23;

[0047] Transverse drive mechanism 3;

[0048] Transverse mounting frame 4;

[0049] Die mounting plate 5:

[0050] Right-angle cavity 51: first static cutting edge 511, second static cutting edge 512;

[0051] Rounded corner cavity 52: third static cutting edge 521, fourth static cutting edge 522;

[0052] First punching hole 53;

[0053] A second punching hole 54;

[0054] Right angle die 55;

[0055] Fillet die 56;

[0056] A first punching die 57;

[0057] A second punching die 58;

[0058] Convex die mounting plate 6:

[0059] Right-angle punch 61: first movable cutting edge 611, second movable cutting edge 612;

[0060] Rounded corner punch 62: third movable cutting edge 621, fourth movable cutting edge 622;

[0061] First punch 63;

[0062] A second punch 64;

[0063] Lifting drive mechanism 7;

[0064] Lifting guide rod 8;

[0065] Pressing block 9;

[0066] Elastic buffer component 10. DETAILED DESCRIPTION

[0067] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0068] The existing busbar cutting mechanism has a single function and cannot meet the different cutting requirements of the busbar. Therefore, the existing busbar cutting method is to sequentially set up multiple cutting mechanisms with different cutting functions to complete the corresponding cutting operations in sequence. The existing busbar cutting method has low cutting efficiency and high cutting cost.

[0069] In view of this, the present application provides a busbar cutting mechanism, which can cut at least three types of busbars: busbars with right angles at both ends, busbars with rounded angles at both ends, and busbars with a right angle at one end and a rounded angle at the other.

[0070] like Figures 1 to 7 As shown, the busbar cutting mechanism provided in the embodiment of the present application includes a base plate 1, a busbar guide assembly 2, a lateral drive mechanism 3, a lateral mounting frame 4, a die mounting plate 5, a convex die mounting plate 6 and a lifting drive mechanism 7, wherein:

[0071] The busbar guide assembly 2 is fixed relative to the bottom plate 1, and the busbar guide assembly 2 is used to limit the busbar 100 to be cut along a first horizontal direction (such as Figure 1 Optionally, the busbar guide assembly 2 includes a connecting plate 21, a first guide wheel 22 and a second guide wheel 23, wherein: the lower end of the connecting plate 21 is fixedly connected to the bottom plate 1, the first guide wheel 22 and the second guide wheel 23 are arranged side by side at the upper end of the connecting plate 21, and a guide gap is formed between the first guide wheel 22 and the second guide wheel 23 for the busbar 100 to be cut to pass through, and the busbar 100 to be cut passes through the guide gap.

[0072] The transverse movement mounting frame 4 is slidably mounted on the base plate 1 , and the transverse movement driving mechanism 3 is arranged on the base plate 1 and is drivingly connected to the transverse movement mounting frame 4 .

[0073] The male die mounting plate 6 and the female die mounting plate 5 are arranged up and down, wherein the female die mounting plate 5 is fixedly mounted on the transverse mounting frame 4, the lifting drive mechanism 7 is mounted on the transverse mounting frame 4 and is in transmission connection with the male die mounting plate 6, and a conveying space for the busbar 100 to be cut to pass through is formed between the male die mounting plate 6 and the female die mounting plate 5. Of course, in other embodiments, the male die mounting plate 6 can also be fixedly mounted on the transverse mounting frame 4, and the lifting drive mechanism 7 is mounted on the transverse mounting frame 4 and is in transmission connection with the female die mounting plate 5.

[0074] The die mounting plate 5 has a second horizontal direction (such as Figure 1 The right-angle cavity 51 and the rounded cavity 52 are spaced apart from each other (in the Y-axis direction of the second horizontal direction), wherein the second horizontal direction is not parallel to the first horizontal direction, and optionally, the second horizontal direction is perpendicular to the first horizontal direction.

[0075] A right-angle punch 61 and a rounded-angle punch 62 are arranged on the punch mounting plate 6 at intervals along the second horizontal direction.

[0076] The lifting drive mechanism 7 is used to drive the punch mounting plate 6 to lift up and down toward the die mounting plate 5, so as to drive the punch mounting plate 6 and the die mounting plate 5 to move closer to or farther from each other, so that the right-angle punch 61 and the right-angle cavity 51 are molded or separated, and the rounded corner punch 62 and the rounded corner cavity 52 are molded or separated. Of course, when the punch mounting plate 6 is fixedly mounted on the transverse mounting frame 4, the lifting drive mechanism 7 is used to drive the die mounting plate 5 to lift up and down toward the punch mounting plate 6, so that the right-angle punch 61 and the right-angle cavity 51 are molded or separated, and the rounded corner punch 61 and the rounded corner cavity 51 are molded or separated.

[0077] The lateral drive mechanism 3 is used to drive the lateral mounting frame 4 to move, so as to drive the right-angle cavity 51 and the right-angle punch 61 to move to the upper and lower sides of the busbar to be cut. At this time, the right-angle punch 61 is controlled to close the mold with the right-angle cavity 51, so that the busbar with a right-angle end can be cut; while the right-angle punch 61 closes the mold with the right-angle cavity 51, the rounded corner punch 62 closes the mold with the rounded corner cavity 52, but since there is no busbar between the rounded corner punch 62 and the rounded corner cavity 52 at this time, even if the rounded corner punch 62 closes the mold with the rounded corner cavity 52, the cutting will not be performed.

[0078] The lateral drive mechanism 3 is also used to drive the lateral mounting frame 4 to move, so as to drive the rounded corner cavity 52 and the rounded corner punch 62 to move to the upper and lower sides of the busbar to be cut. At this time, the rounded corner punch 62 is controlled to close the rounded corner cavity 52, so that the busbar with rounded ends can be cut; while the rounded corner punch 62 closes the rounded corner cavity 52, the right-angle punch 61 closes the right-angle cavity 51, but since there is no busbar between the right-angle punch 61 and the right-angle cavity 51 at this time, even if the right-angle punch 61 closes the right-angle cavity 51, the cutting will not be performed.

[0079] According to the cutting requirements of the busbar, by controlling the transverse driving mechanism to drive the transverse mounting frame to move at an appropriate time during the transmission of the busbar, switching between right-angle cutting and rounded-corner cutting, the busbar cutting mechanism provided in the embodiment of the present application can cut three types of busbars: right-angled at both ends, rounded at both ends, and right-angled at one end and rounded at the other. Compared with the existing cutting method of completing the corresponding cutting operations in sequence through multiple cutting mechanisms, the busbar cutting mechanism of the present application improves the cutting efficiency and reduces the cutting cost.

[0080] like Figure 5 and Figure 6As shown, optionally, a straight first static cutting blade 511 is provided on the first side wall of the right-angle cavity 51, and a straight second static cutting blade 512 is provided on the second side wall of the right-angle cavity 51. Correspondingly, a straight first dynamic cutting blade 611 and a straight second dynamic cutting blade 612 are provided on opposite sides of the lower end of the right-angle punch 61, respectively, and the first dynamic cutting blade 611 matches the first static cutting blade 511, and the second dynamic cutting blade 612 matches the second static cutting blade 512. When the right-angle punch 61 is molded with the right-angle cavity 51, the first static cutting blade 511 and the first dynamic cutting blade 611 cooperate to cut the busbar from the first position, and the second static cutting blade 512 and the second dynamic cutting blade 612 cooperate to cut the busbar from the second position, thereby obtaining a busbar with a predetermined length and one end being a right angle, and the new end of the busbar 100 to be cut after cutting is also cut into a right angle.

[0081] like Figure 5 and Figure 7 As shown, optionally, a third static cutting edge 521 protruding into the rounded corner cavity 52 is provided on the first side wall of the rounded corner cavity 52, and a fourth static cutting edge 522 protruding into the rounded corner cavity 52 is provided on the second side wall of the rounded corner cavity 52. ​​Correspondingly, a third dynamic cutting edge 621 and a fourth dynamic cutting edge 622 concave in the shape of a arc are provided on opposite sides of the rounded corner punch 62, respectively, the third dynamic cutting edge 621 matches the third static cutting edge 521, and the fourth dynamic cutting edge 622 matches the fourth static cutting edge 522. When the rounded corner punch 62 is molded with the rounded corner cavity 52, the third static cutting blade 521 and the third dynamic cutting blade 621 cooperate to cut the busbar from the first position, and the fourth static cutting blade 522 and the fourth dynamic cutting blade 622 cooperate to cut the busbar from the second position, thereby obtaining a busbar with a predetermined length and one end being rounded, and the new end of the busbar 100 to be cut is also cut into a rounded shape after cutting.

[0082] The optional working process of the busbar cutting mechanism in the embodiment of the present application is as follows:

[0083] When you need to continuously cut out busbars with both ends being right angles:

[0084] In the initial state, the male die mounting plate 6 is at an initial position away from the female die mounting plate 5 .

[0085] The lateral drive mechanism 3 is controlled to drive the lateral mounting frame 4 to move, so as to drive the right-angle cavity 51 and the right-angle punch 61 to move to the upper and lower sides of the busbar to be cut.

[0086] The busbar 100 to be cut is controlled to move along the first horizontal direction. When the busbar 100 to be cut of a predetermined length passes between the right-angle cavity 51 and the right-angle punch 61, the pulling of the busbar 100 to be cut is stopped. The lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to descend close to the die mounting plate 5, so that the right-angle punch 61 is molded with the right-angle cavity 51 to obtain a busbar with a predetermined length and one end of the busbar 100 to be cut is also cut into a right angle.

[0087] After the cutting is completed, the lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to rise and return to its original position away from the die mounting plate 5, and the busbar 100 to be cut of a predetermined length is driven again to pass between the right-angle cavity 51 and the right-angle punch 61 to perform the next cutting operation.

[0088] Since the cutting action is performed each time by the right-angle punch 61 and the right-angle cavity 51 , both ends of the busbar of a predetermined length obtained subsequently each time are right-angled.

[0089] When you need to continuously cut out busbars with rounded corners at both ends:

[0090] In the initial state, the male die mounting plate 6 is at an initial position away from the female die mounting plate 5 .

[0091] The lateral drive mechanism 3 is controlled to drive the lateral mounting frame 4 to move, so as to drive the rounded corner cavity 52 and the rounded corner punch 62 to move to the upper and lower sides of the busbar to be cut.

[0092] The busbar 100 to be cut is controlled to move along the first horizontal direction. When the busbar 100 to be cut of a predetermined length passes between the rounded corner cavity 52 and the rounded corner punch 62, the pulling of the busbar 100 to be cut is stopped. The lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to descend close to the die mounting plate 5, so that the rounded corner punch 62 is molded with the rounded corner cavity 52 to obtain a busbar with a predetermined length and one end of the busbar 100 to be cut is also cut into a rounded shape.

[0093] After the cutting is completed, the lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to rise and return to its original position away from the die mounting plate 5, and continue to drive the busbar 100 to be cut of a predetermined length to pass between the rounded corner cavity 52 and the rounded corner punch 62 to perform the next cutting operation.

[0094] Since the rounded corner punch 62 and the rounded corner cavity 52 are used for each cutting operation, both ends of the busbars of predetermined length obtained subsequently each time are rounded.

[0095] When you need to cut a busbar with a rounded end and a right angle at the other end:

[0096] In the initial state, the male die mounting plate 6 is at an initial position away from the female die mounting plate 5 .

[0097] The lateral drive mechanism 3 is controlled to drive the lateral mounting frame 4 to move, so as to drive the rounded corner cavity 52 and the rounded corner punch 62 to move to the upper and lower sides of the busbar to be cut.

[0098] The busbar 100 to be cut is controlled to move along the first horizontal direction. When the busbar 100 to be cut of a predetermined length passes between the rounded corner cavity 52 and the rounded corner punch 62, the pulling of the busbar 100 to be cut is stopped. The lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to descend close to the die mounting plate 5, so that the rounded corner punch 62 is molded with the rounded corner cavity 52 to obtain a busbar with a predetermined length and one end of the busbar 100 to be cut is also cut into a rounded shape.

[0099] After the cutting is completed, the lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to rise and return to its position away from the die mounting plate 5, and the transverse driving mechanism 3 is controlled to drive the transverse mounting frame 4 to move, so as to drive the right-angle cavity 51 and the right-angle punch 61 to move to the upper and lower sides of the busbar to be cut.

[0100] The busbar 100 to be cut is controlled to continue to move along the first horizontal direction. When the busbar 100 to be cut of a predetermined length passes between the right-angle cavity 51 and the right-angle punch 61, the pulling of the busbar 100 to be cut is stopped. The lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to descend close to the die mounting plate 5, so that the right-angle punch 61 is molded with the right-angle cavity 51 to obtain a busbar of a predetermined length with one end being rounded and the other end being right-angled. In addition, the new end of the busbar 100 to be cut is cut into a right angle.

[0101] After the cutting is completed, the lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to rise away from the die mounting plate 5 and return to its original position. Then, the traverse drive mechanism 3 is controlled to drive the traverse mounting frame 4 to move, so as to drive the rounded corner cavity 52 and the rounded corner punch 62 to move to the upper and lower sides of the busbar to be cut. The busbar 100 to be cut of a predetermined length is continuously driven to pass through between the rounded corner cavity 52 and the rounded corner punch 62 to perform the next cutting operation, so as to obtain the next predetermined length of the busbar with one end being rounded and the other end being right-angled.

[0102] like Figure 1As shown, optionally, the busbar cutting mechanism in the embodiment of the present application further includes a lifting guide rod 8, wherein: the lifting guide rod 8 is arranged in the vertical direction, one end of the lifting guide rod 8 is fixedly connected to one of the die mounting plate 5 and the punch mounting plate 6, and the other end of the lifting guide rod 8 is slidably connected to the other of the die mounting plate 5 and the punch mounting plate 6. The lifting guide rod 8 is used to realize the lifting and guiding of the die mounting plate 5 or the punch mounting plate 6, so as to ensure that the right-angle punch 61 is accurately molded with the right-angle cavity 51, and the rounded corner punch 62 is accurately molded with the rounded corner cavity 52.

[0103] like Figures 1 to 4 As shown, optionally, the busbar cutting mechanism in the embodiment of the present application also includes a pressing block 9 and an elastic buffer assembly 10, wherein: the pressing block 9 is connected to the punch mounting plate 6 via the elastic buffer assembly 10 and is located below the punch mounting plate 6, and the pressing block 9 is provided with a right-angle through hole for the lower end of the right-angle punch 61 to pass through, and a rounded through hole for the lower end of the rounded punch 62 to pass through.

[0104] When the lifting drive mechanism 7 drives the male die mounting plate 6 and the female die mounting plate 5 to approach each other, the pressing block 9 first elastically presses the busbar against the upper end surface of the female die mounting plate 5. As the male die mounting plate 6 and the female die mounting plate 5 approach each other further, the elastic buffer assembly 10 is gradually compressed under pressure, and the lower ends of the right-angled male die 61 and the rounded male die 62 respectively pass through the right-angle through hole and the rounded through hole and then penetrate into the right-angle cavity 51 and the rounded cavity 52, thereby cutting the pressed busbar.

[0105] The busbar to be cut is pre-pressed against the upper end surface of the die mounting plate 5 by the pressing block 9, so that the cut end of the busbar can be prevented from warping during the cutting process.

[0106] Optionally, the elastic buffer assembly 10 includes a guide post and a spring, wherein: the lower end of the guide post is fixedly connected to the pressing block 9, and the upper end of the guide post is slidably connected to the punch mounting plate 6. The spring is sleeved on the guide post, wherein the lower end of the spring abuts against the pressing block 9, and the upper end of the spring abuts against the punch mounting plate 6.

[0107] As the lifting drive mechanism 7 drives the punch mounting plate 6 and the die mounting plate 5 to approach, the pressure block 9 is lifted and lowered synchronously. When the punch mounting plate 6 or the die mounting plate 5 is lifted and lowered to the right position, the pressure block 8 abuts against the upper end surface of the die mounting plate 5, thereby pressing the busbar. As the lifting drive mechanism 7 drives the punch mounting plate 6 and the die mounting plate 5 to continue to approach, the spring gradually contracts, and the pressure block 9 keeps the busbar elastically pressed against the upper end surface of the die mounting plate 5, and finally the lower end of the right-angle punch 61 and the lower end of the rounded punch 62 penetrate into the right-angle cavity 51 and the rounded cavity 52 respectively.

[0108] It can be seen that by configuring the elastic buffer assembly 10 to include a guide column and a spring, the elastic deformation of the spring can realize the elastic compression of the pressing block 9 on the bus bar.

[0109] Optionally, the die mounting plate 5 , the transverse mounting frame 4 and the bottom plate 1 are respectively provided with a first blanking hole communicating with the right-angle cavity 51 , and a second blanking hole communicating with the rounded cavity 52 .

[0110] By providing a first blanking hole below the right-angle cavity 51, the waste material cut off by the right-angle punch 61 and the right-angle cavity 51 falls into the first blanking hole, thereby preventing the right-angle cavity 51 from being occupied by waste material and affecting the next cutting. Similarly, by providing a second blanking hole below the rounded cavity 52, the waste material cut off by the rounded punch 62 and the rounded cavity 52 falls into the second blanking hole, thereby preventing the rounded cavity 52 from being occupied by waste material and affecting the next cutting.

[0111] As known to those skilled in the art, it may also be necessary to punch holes at the ends of the busbars before welding the busbars. Figure 5 As shown, the die mounting plate 5 in the embodiment of the present application also has a first punching hole 53 and a second punching hole 54 arranged on both sides of the rounded cavity 52 along the first horizontal direction. Figure 4 As shown, the punch mounting plate 6 is provided with a first punch 63 matching the first punch hole 53, and a second punch 64 matching the second punch hole 54. Figure 7 As shown, the first punch 63 and the second punch 64 are integrally provided with the rounded corner punch 62, thereby simplifying the installation structure.

[0112] In this way, when the transverse driving mechanism 3 drives the transverse mounting frame 4 to move, driving the rounded corner cavity 52 and the rounded corner punch 62 to move to the upper and lower sides of the busbar 100 to be cut, the first punch 63, the second punch 64 and the first punch hole 53, the second punch hole 54 move synchronously to the upper and lower sides of the busbar 100 to be cut.

[0113] The rounded cavity 52 and the rounded punch 62 cut the busbar 100 to be cut, and obtain a busbar with a rounded end. At the same time, the first punch 63 and the first punch hole 53, the second punch 64 and the second punch hole 54 simultaneously punch the busbar, thereby finally obtaining a busbar with both a rounded end and a through hole.

[0114] The busbar cutting mechanism in the embodiment of the present application is particularly suitable for preparing the middle busbar of a three-line battery string assembly. For example, Figure 8, a battery string assembly consisting of 12 half-cell battery strings 200 is shown. The middle busbars of the battery string assembly include L-shaped busbar 101, U-shaped busbar 102, U-shaped busbar 103 and L-shaped busbar 104 in sequence, wherein one end of L-shaped busbar 101 and L-shaped busbar 104 is a right angle shape, and the other end is a rounded shape, and the rounded end has a punching hole. Both ends of U-shaped busbar 102 and U-shaped busbar 103 are rounded, and both ends have a punching hole.

[0115] like Fig. 9 As shown, optionally, the busbar cutting mechanism in the embodiment of the present application implements the continuous preparation of the four middle busbars of the above-mentioned battery string assembly according to the following process.

[0116] First cut:

[0117] The lateral drive mechanism 3 is controlled to drive the lateral mounting frame 4 to move, so as to drive the right-angle cavity 51 and the right-angle punch 61 to move to the upper and lower sides of the busbar to be cut.

[0118] The busbar to be cut is controlled to move along the first horizontal direction (such as the X-axis direction in the figure) so that the end of the busbar to be cut passes through between the right-angle cavity 51 and the right-angle punch 61, and the pulling of the busbar to be cut is stopped. The lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to descend close to the die mounting plate 5, so that the right-angle punch 61 is molded with the right-angle cavity 51, and the end of the busbar to be cut is cut into a right angle.

[0119] After the cutting is completed, the lifting drive mechanism 7 is controlled to drive the male die mounting plate 6 to rise away from the female die mounting plate 5 and return to its original position.

[0120] Second cut:

[0121] Control the transverse driving mechanism 3 to drive the transverse mounting frame 4 to move, so as to drive the rounded corner cavity 52 and the rounded corner punch 62 to move to the upper and lower sides of the busbar to be cut. Synchronously, the first punch 63, the second punch 64 and the first punch hole 53, the second punch hole 54 also move to the upper and lower sides of the busbar to be cut.

[0122] The busbar to be cut is controlled to move along the first horizontal direction. When the busbar to be cut of a predetermined length (equal to the length of the L-shaped busbar 101) passes between the rounded corner cavity 52 and the rounded corner punch 62, the pulling of the busbar to be cut is stopped. The lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to descend close to the die mounting plate 5, so that the rounded corner punch 62 is molded with the rounded corner cavity 52, and the first punch 63 and the second punch 64 are punched into the first punch hole 53 and the second punch hole 54 respectively, so as to obtain the L-shaped busbar 101. In addition, the new end of the busbar to be cut is also cut into a rounded shape, and a punch hole is also formed on the new end.

[0123] After the cutting is completed, the lifting drive mechanism 7 is controlled to drive the male die mounting plate 6 to rise away from the female die mounting plate 5 and return to its original position.

[0124] Third cut:

[0125] The busbar to be cut is controlled to move along the first horizontal direction. When the busbar to be cut of a predetermined length (equal to the length of the U-shaped busbar 102) passes between the rounded corner cavity 52 and the rounded corner punch 62, the pulling of the busbar to be cut is stopped. The lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to descend close to the die mounting plate 5, so that the rounded corner punch 62 is molded with the rounded corner cavity 52, and the first punch 63 and the second punch 64 are punched into the first punch hole 53 and the second punch hole 54 respectively, so as to obtain the U-shaped busbar 102. In addition, the new end of the busbar to be cut is also cut into a rounded shape, and a punch hole is also formed on the new end.

[0126] After the cutting is completed, the lifting drive mechanism 7 is controlled to drive the male die mounting plate 6 to rise away from the female die mounting plate 5 and return to its original position.

[0127] Fourth cut:

[0128] The busbar to be cut is controlled to move along the first horizontal direction. When the busbar to be cut of a predetermined length (equal to the length of the U-shaped busbar 103) passes between the rounded corner cavity 52 and the rounded corner punch 62, the pulling of the busbar to be cut is stopped. The lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to descend close to the die mounting plate 5, so that the rounded corner punch 62 is molded with the rounded corner cavity 52, and the first punch 63 and the second punch 64 are punched into the first punch hole 53 and the second punch hole 54 respectively, so as to obtain the U-shaped busbar 103. In addition, the new end of the busbar to be cut is also cut into a rounded shape, and a punch hole is also formed on the new end.

[0129] After the cutting is completed, the lifting drive mechanism 7 is controlled to drive the male die mounting plate 6 to rise away from the female die mounting plate 5 and return to its original position.

[0130] Fifth cut:

[0131] The lateral drive mechanism 3 is controlled to drive the lateral mounting frame 4 to move, so as to drive the right-angle cavity 51 and the right-angle punch 61 to move to the upper and lower sides of the busbar to be cut.

[0132] The busbar to be cut is controlled to move along the first horizontal direction, and when a busbar of a predetermined length (equal to the length of the L-shaped busbar 104) passes between the right-angle cavity 51 and the right-angle punch 61, the pulling of the busbar to be cut is stopped. The lifting drive mechanism 7 is controlled to drive the punch mounting plate 6 to descend close to the die mounting plate 5, so that the right-angle punch 61 is molded with the right-angle cavity 51 to obtain the L-shaped busbar 104.

[0133] At this point, the continuous preparation of the four middle bus bars of the battery string assembly is completed.

[0134] Of course, in other embodiments, the first punching hole 53 and the second punching hole 54 may be arranged on both sides of the right-angle cavity 51 according to actual needs. In this way, the right-angle cavity 51 and the right-angle punch 61 cut the busbar 100 to be cut, and obtain the busbar with a right-angle end, while the first punch 63 and the first punching hole 53, the second punch 64 and the second punching hole 54 simultaneously punch the busbar, and finally obtain the busbar with both a right-angle end and a punching hole.

[0135] The busbar cutting mechanism in the embodiment of the present application can also be used to cut and prepare the straight busbars at both ends of the battery string assembly.

[0136] Continue to refer Figure 5 As shown, optionally, the right-angle cavity 51 , the rounded cavity 52 , the first punching hole 53 , and the second punching hole 54 are all directly formed on the die mounting plate 5 .

[0137] Of course, you can also Figure 3 and Figure 4 As shown, a right-angle die 55, a rounded die 56, a first punching die 57 and a second punching die 58 are installed on the die mounting plate 5. The right-angle cavity 51 is formed on the right-angle die 55, the rounded cavity 52 is formed on the rounded die 56, the first punching hole 53 is formed on the first punching die 57, and the second punching hole 54 is formed on the second punching die 58.

[0138] The present application also provides a busbar preparation device, which includes a feeding mechanism, a pressing mechanism, a traction mechanism and the busbar cutting mechanism described in any one of the above items, wherein: the feeding mechanism is used to feed out the busbar; the traction mechanism is used to pull the busbar fed out by the feeding mechanism, so that the busbar passes through the pressing mechanism and the busbar cutting mechanism in sequence; the pressing mechanism is used to press the busbar, and the busbar cutting mechanism is used to cut the pressed busbar to obtain a busbar segment with a predetermined length, and the cut busbar segment has at least one of a rounded end and a right-angled end.

[0139] Through the cooperation of the unloading mechanism, the pressing mechanism, the busbar cutting mechanism and the traction mechanism, the busbar preparation device realizes the automatic preparation of busbars with both ends being right angles, both ends being rounded, or one end being right angle and the other end being rounded.

[0140] The present application is described in sufficient detail above 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 application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.

Claims

1. A busbar cutting mechanism, characterized in that: The busbar cutting mechanism includes a bottom plate, a busbar guide assembly, a lateral drive mechanism, a lateral mounting frame, a concave die mounting plate, a convex die mounting plate and a lifting drive mechanism, wherein: The busbar guide assembly is fixedly arranged relative to the bottom plate, and the busbar guide assembly is used to limit the busbar to be cut from moving along a first horizontal direction; The transverse movement mounting frame is slidably mounted on the bottom plate, and the transverse movement driving mechanism is arranged on the bottom plate and is transmission-connected to the transverse movement mounting frame; The male die mounting plate and the female die mounting plate are arranged up and down and one of them is fixedly mounted on the transverse mounting frame, the lifting drive mechanism is mounted on the transverse mounting frame and is drivingly connected to the other of the male die mounting plate and the female die mounting plate, and a conveying space for the busbar to be cut to pass through is formed between the male die mounting plate and the female die mounting plate; The female mold mounting plate has a right-angled cavity and a rounded cavity spaced apart along a second horizontal direction, and the second horizontal direction is not parallel to the first horizontal direction; the male mold mounting plate has a right-angled punch and a rounded punch spaced apart along the second horizontal direction; the lifting drive mechanism is used to drive the male mold mounting plate and the female mold mounting plate to move closer to or farther from each other, so that the right-angled punch and the right-angled cavity are molded together or separated, and the rounded punch and the rounded cavity are molded together or separated; The transverse driving mechanism is used to drive the transverse mounting frame to move, so as to drive the right-angle cavity and the right-angle punch to move to the upper and lower sides of the busbar to be cut, and when the right-angle punch is molded with the right-angle cavity, a busbar with a right-angle end is cut; The transverse driving mechanism is also used to drive the transverse mounting frame to move, so as to drive the rounded corner cavity and the rounded corner punch to move to the upper and lower sides of the busbar to be cut. When the rounded corner punch is molded with the rounded corner cavity, a busbar with a rounded end is cut out.

2. The busbar cutting mechanism according to claim 1, wherein: A straight first static cutting edge is provided on the first side wall of the right-angle cavity, and a straight second static cutting edge is provided on the second side wall of the right-angle cavity; a straight first dynamic cutting edge and a straight second dynamic cutting edge are provided on opposite sides of the lower end of the right-angle punch, respectively, the first dynamic cutting edge matches the first static cutting edge, and the second dynamic cutting edge matches the second static cutting edge; When the right-angle punch is molded with the right-angle cavity, the first static cutting blade and the first dynamic cutting blade cooperate to cut the bus bar from a first position, and the second static cutting blade and the second dynamic cutting blade cooperate to cut the bus bar from a second position.

3. The busbar cutting mechanism according to claim 1, wherein: A third static cutting blade with an arc shape protruding into the cavity is provided on the first side wall of the cavity, and a fourth static cutting blade with an arc shape protruding into the cavity is provided on the second side wall of the cavity; a third dynamic cutting blade with an arc shape protruding into the cavity is provided on the opposite sides of the rounded corner punch, and a third dynamic cutting blade and a fourth dynamic cutting blade with an inward concave arc shape are provided respectively, and the third dynamic cutting blade matches the third static cutting blade, and the fourth dynamic cutting blade matches the fourth static cutting blade; When the rounded corner punch is molded with the rounded corner cavity, the third static cutting blade and the third dynamic cutting blade cooperate to cut the bus bar from the first position, and the fourth static cutting blade and the fourth dynamic cutting blade cooperate to cut the bus bar from the second position.

4. The busbar cutting mechanism according to claim 1, wherein: The busbar cutting mechanism further comprises a lifting guide rod, wherein: The lifting guide rod is arranged in the vertical direction, one end of the lifting guide rod is fixedly connected to one of the die mounting plate and the punch mounting plate, and the other end of the lifting guide rod is slidably connected to the other of the die mounting plate and the punch mounting plate.

5. The busbar cutting mechanism according to claim 1, wherein: The busbar cutting mechanism further comprises a material pressing block and an elastic buffer component, wherein: The pressing block is connected to the punch mounting plate via the elastic buffer assembly and is located below the punch mounting plate. The pressing block is provided with a right-angle through hole for the lower end of the right-angle punch to pass through, and a rounded through hole for the lower end of the rounded punch to pass through. When the lifting drive mechanism drives the punch mounting plate and the die mounting plate to approach each other, the pressing block elastically presses the bus bar onto the upper end surface of the die mounting plate, and the lower end of the right-angle punch and the lower end of the rounded-angle punch respectively pass through the right-angle through hole and the rounded-angle through hole and then penetrate into the right-angle cavity and the rounded-angle cavity.

6. The busbar cutting mechanism according to claim 5, wherein: The elastic buffer assembly includes a guide column and a spring, wherein: The lower end of the guide column is fixedly connected to the pressing block, and the upper end of the guide column is slidably connected to the male die mounting plate; The spring is sleeved on the guide column, wherein the lower end of the spring abuts against the pressing block, and the upper end of the spring abuts against the punch mounting plate.

7. The busbar cutting mechanism according to claim 1, wherein: The busbar guide assembly comprises a connecting plate, a first guide wheel and a second guide wheel, wherein: The lower end of the connecting plate is fixedly connected to the bottom plate; The first guide wheel and the second guide wheel are arranged side by side at the upper end of the connecting plate, and a guide gap is formed between the first guide wheel and the second guide wheel for the busbar to be cut to pass through.

8. The busbar cutting mechanism according to claim 1, wherein: The die mounting plate, the lateral mounting frame and the bottom plate are also respectively provided with a first blanking hole communicating with the right-angle cavity and a second blanking hole communicating with the rounded cavity.

9. The busbar cutting mechanism according to claim 1, wherein: The die mounting plate also has a first punching hole and a second punching hole arranged on both sides of the right-angle cavity or the rounded cavity along the first horizontal direction; The punch mounting plate is provided with a first punch matched with the first punch hole, and a second punch matched with the second punch hole.

10. A busbar preparation device, characterized in that: The busbar preparation device comprises a feeding mechanism, a pressing mechanism, a traction mechanism and a busbar cutting mechanism according to any one of claims 1 to 9, wherein: The discharge mechanism is used to discharge the busbar; The traction mechanism is used to pull the busbar released by the discharge mechanism, so that the busbar passes through the pressing mechanism and the busbar cutting mechanism in sequence; The pressing mechanism is used to press the busbar, and the busbar cutting mechanism is used to cut the pressed busbar to obtain a busbar segment with a predetermined length, and the cut busbar segment has at least one of a rounded end and a right-angled end.

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