A steel strip cutting and welding device for bundling battery modules

Abstract

The present application relates to a steel strip cutting and welding device for bundling battery modules, including a frame, provided with a welding area; a sliding table, arranged in the welding area; a winding guide assembly, connected to the sliding table, used to form a belt entry channel and a belt exit channel, the steel strip head passes through the belt entry channel, the welding area, the belt exit channel and the welding area in sequence to complete the belt winding, and when the pull belt is pre-tightened, the steel strip leaves the belt exit channel; a limit plate, connected to the sliding table, when the pull belt is pre-tightened, the sliding table is used to make the limit plate abut against the workpiece; a bending assembly, connected to the sliding table, after the belt is wound, the bending assembly bends the steel strip head, used to allow the steel strip head to be inserted into the end of the limit plate away from the belt exit channel when the pull belt is pre-tightened; a downward pressing welding assembly, connected to the sliding table, after the pull belt is pre-tightened, used to press the inner and outer steel strips on the limit plate and weld them; a cutting assembly, connected to the sliding table, used to cut off the outer steel strip. The present application has the effect of making the battery module firmly bundled.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery processing and manufacturing, and in particular to a steel strip cutting and welding device for bundling battery modules. Background Art

[0002] With the rapid development of lithium-ion battery application technology, the application fields of lithium-ion battery power modules have gradually expanded to electric vehicles, energy storage, communications, mining and other fields. At present, according to the established technical route, multiple square aluminum shell battery cells need to be arranged and combined in series or parallel to form a single battery module unit, and steel strapping machines will be used in this process.

[0003] In the related art, the steel strapping machine includes a traction device, a surrounding guide device and a cutting and welding device. Specifically, the traction device applies traction to the steel strap to make the steel strap move forward or backward; the various components in the surrounding guide device are distributed around the circumference of the battery module. After the steel strap enters the surrounding guide device, the surrounding guide device will allow the steel strap to move around the circumference of the battery module. At the same time, there will be discontinuities in the distribution area where the various components in the surrounding guide device are located, and the discontinuities will serve as welding areas.

[0004] The cutting and welding device is arranged in the welding area, wherein the cutting and welding device includes a sliding table, a material head clamping assembly, a pressing assembly, a welding assembly and a cutting assembly. The sliding table material head clamping assembly, the pressing assembly, the welding assembly and the cutting assembly are arranged. When the material head of the steel strip moves to a predetermined position on the inner side of its subsequent part, the steel strip material head is first clamped by the material head clamping assembly, and then the sliding table moves toward the direction close to the battery module. At the same time, the traction device delivers the steel strip backward so that the steel strip is tightly tied to the outer wall of the battery module, and then the inner and outer sides of the steel strip close to the material head are pressed against the outer wall of the battery module through the pressing assembly, and then the material head clamping assembly is pulled away from the steel strip material head, and finally the overlapping parts of the inner and outer sides of the steel strip are welded together by the welding assembly, and then the cutting assembly is cut off the steel strip, thereby completing the bundling work of the battery module.

[0005] Regarding the above-mentioned related technologies, there is a problem that the thickness of the steel strip is between 0.2-0.5mm and the steel strip has a certain hardness and cannot be bent. Therefore, in the process of the traction device delivering the steel strip backward, the material head clamping assembly will be subjected to a large load. Therefore, the hopper clamping assembly needs to select a larger model. After the subsequent material head clamping assembly is pulled out of the material head, the part of the steel strip close to its own material head will have a large distance from the battery module, resulting in the defect of loose bundling of the battery module. Summary of the invention

[0006] In order to make the battery modules bundled more firmly, the present application provides a steel strip cutting and welding device for bundling battery modules.

[0007] The present application provides a steel strip cutting and welding device for bundling battery modules, which adopts the following technical solution:

[0008] A steel strip cutting and welding device for bundling battery modules, comprising:

[0009] A frame, provided with a welding area;

[0010] A sliding table is arranged in the welding area;

[0011] The strip winding guide assembly is connected to the sliding platform and is used to form a strip entry channel and a strip exit channel. The steel strip head passes through the strip entry channel, the welding area, the strip exit channel and the welding area in sequence to complete the strip winding. When the strip is pre-tightened, the steel strip leaves the strip exit channel.

[0012] A limit plate connected to the sliding platform, and when the pull belt is pre-tightened, the sliding platform is used to make the limit plate abut against the workpiece;

[0013] A bending assembly is connected to the sliding platform. After the strip is wound, the bending assembly bends the steel strip head so as to allow the steel strip head to be inserted into the end of the limit plate away from the strip-leaving channel when the strip is pre-tightened;

[0014] A downward pressing welding assembly is connected to the sliding platform and is used to press the inner and outer steel belts onto the limit plate and weld them after the pull belt is pre-tightened;

[0015] The cutting assembly is connected to the sliding table and is used for cutting the outer steel strip.

[0016] By adopting the above technical solution, in the process of the traction device gradually delivering the steel strip forward, the steel strip is first allowed to wrap around the battery module through the strip winding guide assembly until the steel strip passes through the bending assembly and reaches the predetermined position, and then the bending assembly bends the steel strip head into a U shape, and then the bending assembly is separated from the steel strip head, and then the sliding table allows the limit plate to move in the direction close to the battery module. At the same time, in this process, the traction device delivers the steel strip backward so that the steel strip head is covered on the limit plate, and at the same time, the strip winding guide assembly allows the steel strip to leave the strip exit channel until the limit plate abuts against the outer wall of the battery module. At this time, the steel strip is tightly tied to the outer wall of the battery module, and finally passed through The welding assembly is pressed down to weld the inner and outer steel strips together, and then the outer steel strip is switched through the cutting assembly, thereby completing the bundling of the battery module. Compared with the method of clamping the material head through the clamping assembly during the pre-tightening of the pull belt, in this design method, the steel strip material head will be sleeved on the end of the limit plate away from the belt channel during the pre-tightening of the pull belt, so as to serve as a force point in the pre-tightening process of the steel strip. After the steel strip is tied to the battery module, the maximum distance between the part of the steel strip close to the material head and the battery module is only the thickness of the limit plate, so the distance between the steel strip and the battery module can be further reduced, so that the battery module can be bundled more firmly.

[0017] Preferably, the tape winding guide assembly comprises:

[0018] A movable guide block is connected to the sliding table, the belt entry channel is formed between the movable guide block and the frame, a first belt passing groove is arranged on the surface of the movable guide block perpendicular to the center line of the steel belt, the first belt passing groove is used for the steel belt to pass through to form the belt exit channel, and an auxiliary notch is arranged on the side wall of the first belt passing groove close to the center of the steel belt;

[0019] An auxiliary guide motor is arranged on the movable guide block;

[0020] An auxiliary pulley is arranged in the auxiliary notch, the auxiliary pulley is connected to the output shaft of the auxiliary pulley motor, and the auxiliary pulley is used for rolling contact with the steel belt;

[0021] The first disengagement cylinder is connected to the sliding platform. The first disengagement cylinder is connected to the movable guide block and is used to make the steel belt leave the notch of the first belt-threading slot when the belt is pre-tightened.

[0022] By adopting the above technical scheme, on the one hand, the steel belt first enters the welding area from the gap between the movable guide block and the frame, and then the steel belt is extended and moved around the battery module through the external guide device until it is close to the position of the movable guide block, and then enters the welding area along the first belt threading slot until the steel belt head moves to the predetermined position, thereby achieving the purpose of making the steel belt be sleeved on the surrounding side of the battery module in an annular spacing. At the same time, when the strap is pre-tightened, the first disengagement cylinder moves the movable guide block to make the steel belt escape from the notch of the first belt threading slot, so that the strap pre-tightening work can be carried out normally; on the other hand, when the steel belt passes through the first belt threading slot, because the steel belt has been bent many times, the recovery resistance of the steel belt will become stronger and stronger, so the auxiliary lead pulley can be rotated by the auxiliary lead motor to make the steel belt leave the first belt threading slot more smoothly and enter the welding area, thereby helping to improve the working stability of the strapping equipment.

[0023] Preferably, a first adjusting cylinder is provided on the movable guide block, and the piston rod of the first adjusting cylinder is connected to the auxiliary guide motor for changing the distance between the auxiliary guide wheel and the side wall of the first belt threading slot away from the center around the steel belt.

[0024] By adopting the above technical solution, since the traction force applied by the auxiliary pulley to the steel belt depends on the rolling friction between the auxiliary pulley and the steel belt, and since the steel belt will also generate sliding friction with the side wall of the first belt-threading groove away from the center around which the steel belt is wrapped, the pressure between the auxiliary pulley and the steel belt can be changed by the first adjusting cylinder, so that the traction force of the steel belt at the movable guide block can be adjusted according to the thickness of the steel belt and the actual movement of the steel belt, thereby making the winding movement of the steel belt smoother.

[0025] Preferably, the frame is provided with an auxiliary partition assembly, and the auxiliary partition assembly forms an outer belt threading channel and an inner belt threading channel in the welding area, the outer belt threading channel is connected with the belt entry channel, and the inner belt threading channel is connected with the belt exit channel, so as to allow the steel belt head to enter the bending assembly; the auxiliary partition assembly is divided into a fixed group and a movable group, the fixed group is located between the limit plate and the belt winding guide assembly, and the movable group is arranged corresponding to the limit plate, after the pull belt is pre-tightened, the inner belt threading channel at the fixed group is released, and the outer belt threading channel and the inner belt threading channel at the movable group are released.

[0026] By adopting the above technical scheme, on the one hand, due to the setting of the auxiliary partition component, the steel strip leaving the belt entry channel and the steel strip leaving the belt exit channel are not easy to interfere with each other in the area of ​​the bypass guide component and the bending component, which helps to improve the smoothness of the steel strip winding; on the other hand, due to the setting of the fixed group and the movable group, when the downward pressure welding work is carried out, the fixed group can still separate the inner and outer sides of the steel strip, so that there is space between the outer steel strip and the battery module for the cutting component to work, and the movable group can also release the outer belt threading channel and the inner belt threading channel, so as not to affect the normal downward pressure welding work.

[0027] Preferably, the fixed group includes three fixed partitions, which are arranged in parallel and at intervals, two of which are connected to the sliding table to form the outer belt-threading channel, and the remaining fixed partition is connected to the movable guide block to form the inner belt-threading channel; the movable group includes a movable partition and a second disengagement cylinder, the movable partition is connected to the sliding table, the inner belt-threading channel is formed between the outer wall of the movable partition and the limit plate, and the movable partition is provided with a second belt-threading groove to form the outer belt-threading channel; the second disengagement cylinder is connected to the movable partition, and is used to move the movable partition to release the outer belt-threading channel and the inner belt-threading channel of the movable group.

[0028] By adopting the above technical scheme, on the one hand, two of the fixed partitions are connected to the sliding table, so that during the downward pressure welding, the purpose of separating the inner and outer sides of the steel belt can be achieved, and at the same time, the outer steel belt will not be excessively pulled, so that the steel belt is not easily deformed, and the remaining fixed partition is connected to the movable guide plate, so when the steel belt leaves the first belt threading groove, the steel belt can also be synchronously separated from the inner belt threading channel at the fixed group, thereby achieving the purpose of not affecting the normal pull belt pre-tightening work; on the other hand, when the steel belt is wound, the movable partition can be moved to the position corresponding to the limit plate by the second disengagement cylinder to achieve the separation of the inner steel belt and the outer steel belt, and during the downward pressure welding, the movable partition can also be moved by the second disengagement cylinder until the movable partition leaves the position corresponding to the limit plate, so as to realize the release of the outer belt threading channel and the inner belt threading channel, thereby achieving the purpose of allowing the movable group to avoid the downward pressure welding component.

[0029] Preferably, the bending assembly comprises:

[0030] A mounting seat connected to the sliding platform;

[0031] A rotating shaft, rotatably connected to the mounting seat;

[0032] A tape winding block connected to the rotating shaft, wherein the tape winding block is provided with a tape winding slot, and after the steel tape head leaves the inner tape passage and passes through the tape winding slot, the rotating shaft rotates to fold the steel tape head to the side of the limiting plate away from the movable group;

[0033] A tape drive member, disposed on the mounting seat and connected to the rotating shaft;

[0034] The third disengagement cylinder is arranged on the sliding platform, and the piston rod of the third disengagement cylinder is connected to the mounting seat. Before the pull belt is pre-tightened, it is used to make the steel belt leave the notch of the winding belt slot.

[0035] By adopting the above technical solution, after the steel strip leaves the inner strip threading channel and passes through the strip winding slot at the same time, the rotating shaft is first rotated by the strip winding driving member until the steel strip head is folded to the area on the side of the limit plate away from the active group, and then the third disengagement cylinder moves the entire mounting seat to move the strip winding block until the steel strip head is disengaged from the notch of the strip winding slot, thereby completing the complete bending work.

[0036] Preferably, the sliding table is provided with a second adjusting cylinder, the piston rod of the second adjusting cylinder is connected to the third disengagement cylinder, and is used for adjusting the position of the tape block along the direction of the line connecting the outer tape threading channel and the inner tape threading channel; a lead tape slope is provided on two opposite side walls of one of the openings of the tape threading slot, and when the tape threading slot is connected to the inner tape threading channel, the lead tape slope is used to guide the steel tape to move toward the center direction of the tape threading slot.

[0037] By adopting the above technical solution, since the winding block will rotate back and forth many times and the steel strip does not necessarily move along the center line of the channel in the inner belt-threading channel, on the one hand, the position of the winding block can be adjusted by adjusting the cylinder to adapt to the movement trajectory of the steel strip in the inner belt-threading channel, and the movement of the steel strip leaving the inner belt-threading channel can be guided by the guide inclined surface, so that the steel strip can pass through the winding groove more smoothly.

[0038] Preferably, the down-press welding assembly comprises:

[0039] A first pressing block is slidably connected to the sliding platform, the first pressing block is located at a position of the movable group closer to the bending assembly, and the first pressing block is provided with a first light-transmitting through groove for allowing laser to pass through;

[0040] A first pressing cylinder connected to the first pressing block;

[0041] a second pressing block, slidably connected to the sliding platform, the second pressing block being located at a position where the movable group is closer to the fixed group, a second light-transmitting through groove being arranged on a surface of the second pressing block close to the first pressing block, and a notch of the second light-transmitting through groove being arranged opposite to a notch of the first light-transmitting through groove;

[0042] The second pressing cylinder is connected to the second pressing block.

[0043] By adopting the above technical scheme, when performing the downward pressure welding work, the first downward pressure block is first moved toward the direction close to the limit plate by the first downward pressure cylinder until the first downward pressure block presses the inner and outer steel strips, and then the laser passes through the first light-transmitting groove to weld the inner and outer steel strips, and then the second downward pressure cylinder moves the second downward pressure block toward the direction close to the limit plate until the second downward pressure block presses the inner and outer steel strips, and finally the laser passes through the second light-transmitting groove, so that welding can be performed at two positions of the inner and outer steel strips. In addition, in this design method, since the notches of the first light-transmitting groove and the second light-transmitting groove are arranged relative to each other, the contact area between the first downward pressure block and the second downward pressure block and the steel strip can be increased, while the two welding positions of the steel strip will not be too far away, thereby improving the firmness of the steel strip after welding.

[0044] Preferably, the two fixed partition parts connected to the sliding table extend to the position corresponding to the limit plate to form a knife seat part; the cutting component is a blade block, and the blade block is connected to the side of the second lower pressure block away from the first lower pressure block. When the second lower pressure block moves toward the direction close to the limit plate, the blade block slides and abuts against the knife seat part to cut the steel strip.

[0045] By adopting the above technical solution, when the second pressing block moves toward the limit plate, the blade block can slide and abut against the blade seat to cut off the outer steel strip, thereby simplifying the structure of the cutting and welding device. At the same time, by cutting off the outer steel strip before pressing down, the outer steel strip is not easily welded to the inner steel strip after deformation, which also helps to improve the firmness of the bundled battery module.

[0046] In summary, the present application includes at least one of the following beneficial technical effects:

[0047] 1. Through the arrangement of the frame, the sliding table, the belt winding guide assembly, the limit plate, the bending assembly, the downward pressure welding assembly and the cutting assembly, when the belt is pre-tightened, the steel belt head will be sleeved on the end of the limit plate away from the belt channel, so as to serve as a force application point in the steel belt pre-tightening process. After the steel belt is tied to the battery module, the maximum distance between the steel belt near the head and the battery module is only the thickness of the limit plate, so the distance between the steel belt and the battery module can be further reduced, so that the battery module can be tied more firmly;

[0048] 2. The belt winding guide assembly includes an auxiliary belt guide motor and an auxiliary belt guide pulley, so that the steel belt leaves the first belt threading groove more smoothly and enters the welding area, thereby helping to improve the working stability of the strapping equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural schematic diagram of the steel strip cutting and welding device in the embodiment of the present application.

[0050] Figure 2 This is a schematic diagram made in the embodiment of the present application to illustrate how the steel strips are bundled.

[0051] Explanation of reference numerals: 1, frame; 11, welding area; 12, outer belt threading channel; 13, inner belt threading channel; 2, sliding table; 3, belt winding guide assembly; 31, belt entry channel; 32, belt exit channel; 33, movable guide block; 331, first belt threading slot; 332, auxiliary notch; 34, auxiliary belt guide motor; 35, auxiliary belt guide pulley; 36, first disengagement cylinder; 37, first adjustment cylinder; 4, limit plate; 5, bending assembly; 51, mounting seat; 52, rotating shaft; 53, belt winding block; 531, belt winding slot; 532, belt guide Inclined surface; 54, tape drive; 55, third disengagement cylinder; 56, second adjustment cylinder; 6, downward pressing welding assembly; 61, first downward pressing block; 611, first light-transmitting slot; 62, first downward pressing cylinder; 63, second downward pressing block; 631, second light-transmitting slot; 64, second downward pressing cylinder; 7, cutting assembly; 71, blade block; 8, auxiliary partition assembly; 81, fixed group; 811, fixed partition; 82, movable group; 821, movable partition; 8211, second tape passing slot; 822, second disengagement cylinder; 9, knife seat. DETAILED DESCRIPTION

[0052] The following is combined with Figure 1-2 This application is described in further detail.

[0053] The present application embodiment discloses a steel strip cutting and welding device for bundling battery modules. Figure 1 and Figure 2The steel strip cutting and welding device for bundling battery modules includes a frame 1, a sliding table 2, a strip winding guide assembly 3, a limit plate 4, a bending assembly 5, a downward pressing welding assembly 6 and a cutting assembly 7. A surrounding guide device will be provided on the frame 1, and the various components in the surrounding guide device will be distributed around the circumference of the battery module. At the same time, there will be discontinuities in the distribution area where the various components in the surrounding guide device are located, and the discontinuities will serve as welding areas 11; the sliding table 2 is horizontally slidably connected to the frame 1, and the sliding table 2 can move in a direction close to or away from the battery module; the strip winding guide assembly 3 is connected to the sliding table 2, and the bypass group guide assembly will form a strip entry channel 31 and a departure channel, wherein the steel strip material head will pass through the strip entry channel 31, the welding area 11, the strip departure channel 32 and the welding area 11 in sequence in the cutting and welding device to complete the strip winding work, and in addition, the steel strip will be allowed to leave the strip departure channel 32 when the strip is pre-tightened.

[0054] Reference Figure 1 and Figure 2 The limit plate 4 is fixedly connected to the sliding table 2, and when the pull belt is pre-tightened, the sliding table 2 will move in the direction close to the battery module until the surface of the limit plate 4 away from the steel belt abuts against the battery module; the bending component 5 is connected to the sliding table 2, and after the winding is completed, the bending component 5 will bend the steel belt head 180 degrees to form a U-shaped hook, so that when the pull belt is pre-tightened subsequently, the steel belt head can be inserted into the end of the limit plate 4 away from the belt channel 32; the downward pressing welding component 6 is connected to the sliding table 2, and after the pull belt is pre-tightened, the inner and outer steel belts will be pressed against the limit plate 4 and welded; the cutting component 7 is connected to the sliding table 2, and is used to cut off the outer steel belt after welding.

[0055] Reference Figure 1 and Figure 2 Compared with the method of clamping the material head by the clamping assembly during the pre-tightening process of the pull belt, in this design method, the steel belt material head will be sleeved on the end of the limit plate 4 away from the belt channel 32 during the pre-tightening of the pull belt, so as to serve as a force application point in the pre-tightening process of the steel belt. After the steel belt is tied to the battery module, the maximum distance between the part of the steel belt close to the material head and the battery module is only the thickness of the limit plate 4, so the distance between the steel belt and the battery module can be further reduced, so that the battery module can be tied more firmly.

[0056] In this embodiment, in order to facilitate the description of the movement direction of the movable component, the direction that can approach or move away from the battery module is the horizontal direction, and the direction parallel to the center line of the area surrounded by the steel belt is the vertical direction.

[0057] Reference Figure 1 and Figure 2The tape winding guide assembly 3 includes a movable guide block 33, an auxiliary tape guide motor 34, an auxiliary tape guide wheel 35 and a first disengagement cylinder 36. The movable guide block 33 is slidably connected to the sliding table 2. The movable guide block 33 moves in a vertical direction. A first tape passing groove 331 is integrally formed on the lower surface of the movable guide block 33. The first tape passing groove 331 is in an arc-shaped extension shape, and the first tape passing groove 331 is provided for the steel tape to pass through, so as to serve as a tape separation channel 32 formed by the tape winding guide assembly 3. In addition, an auxiliary notch 332 is integrally formed on the side wall of the first tape passing groove 331 near the center of the steel tape. In addition, a first adjusting cylinder 37 is also provided on the movable guide block 33. The piston rod of the first adjusting cylinder 37 is retracted in the horizontal direction, and the piston rod of the first adjusting cylinder 37 can be close to or away from the battery module. The auxiliary tape guide motor 34 is fixedly connected to the piston rod of the first adjusting cylinder 37, and the output shaft of the auxiliary tape guide motor 34 penetrates into the auxiliary notch 332.

[0058] Reference Figure 1 and Figure 2 The auxiliary pulley 35 is cylindrical in shape, and the auxiliary pulley 35 is coaxially fixedly connected to the output shaft of the auxiliary pulley motor 34. At the same time, the auxiliary pulley 35 rolls and abuts against the side of the steel belt close to the battery module to provide traction for the steel belt entering the first belt threading slot 331, so that the steel belt can pass through the movable guide block 33 more smoothly. In addition, the pressure of the auxiliary pulley 35 on the steel belt can be changed under the action of the first adjusting cylinder 37, so as to change the traction force of the auxiliary pulley 35 on the steel belt; the shell of the first disengagement cylinder 36 is fixedly connected to the sliding platform 2, and the piston rod of the first disengagement cylinder 36 is connected to the movable guide block 33. When the belt is pre-tightened, the piston rod of the first disengagement cylinder 36 will extend out to allow the movable guide block 33 to move upward until the steel belt is released from the notch of the first belt threading slot 331, so that the steel belt can be normally tied to the battery module.

[0059] Reference Figure 1 and Figure 2 Because the distance between the steel strip and the strip guide assembly 3 and the bending assembly 5 is relatively far, and the movement trajectory of the steel strip is still unstable, in order to allow the steel strip head to more stably enter the area where the bending assembly 5 is located after the steel strip wraps around the battery module, an auxiliary partition assembly 8 is also provided on the frame 1. Specifically, the auxiliary partition assembly 8 will form an outer strip passing channel 12 and an inner strip passing channel 13 in the welding area 11, wherein the outer strip passing channel 12 is connected to the strip entry channel 31, and the inner strip passing channel 13 is connected to the strip exit channel 32, so as to separate the inner steel strip from the outer steel strip, and at the same time, the steel strip head can also smoothly enter the area where the bending assembly 5 is located along the inner strip passing channel 13.

[0060] Reference Figure 1 and Figure 2 In this embodiment, the auxiliary partition assembly 8 will not affect the work of the subsequent downward pressure welding assembly 6, so the auxiliary partition assembly 8 is also divided into a fixed group 81 and a partition group, wherein the fixed group 81 is located between the limit plate 4 and the belt winding guide assembly 3. Specifically, the fixed group 81 includes three fixed partitions 811, and the three fixed partitions 811 are arranged in parallel and at intervals, wherein two fixed partitions 811 are connected to the sliding table 2, and the two fixed partitions 811 are used to form an outer belt threading channel 12 of the fixed group 81, and because they are connected to the sliding table 2, they are not easy to be over-dragged when the belt is pre-tightened; the remaining fixed partition 811 is connected to the movable guide block 33, and the fixed partition 811 and one of the other two fixed partitions 811 form an inner belt threading channel 13 of the fixed group 81, and because they are connected to the movable guide block 33, the steel belt can also leave the inner belt threading channel 13 at the fixed group 81 when the belt is pre-tightened.

[0061] Reference Figure 1 and Figure 2 The movable group 82 is arranged at a position corresponding to the limit plate 4. Specifically, the movable group 82 includes a movable partition 821 and a second disengagement cylinder 822. The movable partition 821 slides relative to the slide table 2 through the second disengagement cylinder 822 fixedly mounted on the slide table 2. The sliding direction of the movable partition 821 is vertical. A second belt-through groove 8211 is provided on the lower end surface of the movable partition 821. At the same time, the lower end of the movable partition 821 also slides through the slide table 2 to move to a position corresponding to the limit plate 4. At this time, the outer wall of the movable partition 821 and the limiting plate 4 form an inner belt threading channel 13 of the movable group 82, and the second belt threading groove 8211 of the movable partition 821 forms an outer belt threading channel 12, so that the inner steel belt and the outer steel belt can be separated at the corresponding position of the limiting plate 4. In addition, when the downward pressure welding assembly 6 is working, the second disengagement cylinder 822 moves the movable partition 821 to release the outer belt threading channel 12 and the inner belt threading channel 13 of the movable group 82, thereby achieving the purpose of not affecting the subsequent downward pressure welding work.

[0062] Reference Figure 1 and Figure 2The bending assembly 5 includes a mounting seat 51, a rotating shaft 52, a tape block 53, a tape drive 54 and a third disengagement cylinder 55. The mounting seat 51 is connected to the sliding table 2, wherein a second adjusting cylinder 56 is fixedly installed on the sliding table 2, and the piston rod of the second adjusting cylinder 56 extends in the horizontal direction so as to be able to approach or move away from the battery module. At the same time, the piston rod of the second adjusting cylinder 56 is connected to the third disengagement cylinder 55, and the piston rod of the third disengagement cylinder 55 moves in the vertical direction. At the same time, the piston rod of the third disengagement cylinder 55 is connected to the mounting seat 51, so the mounting seat 51 can move in the vertical and horizontal directions relative to the sliding table 2; the rotating shaft 52 is cylindrical in shape, and the rotating shaft 52 is vertically extended. The rotating shaft 52 is rotatably penetrated on the mounting seat 51, and the lower end of the rotating shaft 52 extends to a position close to the limit plate 4.

[0063] Reference Figure 1 and Figure 2 The tape block 53 is connected to one end of the rotating shaft 52 close to the limit plate 4, wherein a tape slot 531 is provided on the tape block 53. Before the bending work, the tape slot 531 is connected to the inner tape passage 13 to allow the steel tape head to reach the predetermined position after passing through; the tape drive member 54 is arranged on the mounting seat 51, and the tape drive member 54 allows the rotating shaft 52 to rotate its own axis, then the rotating shaft 52 will be rotated during bending to fold the steel tape head to the side of the limit plate 4 away from the movable group 82, and then the tape block 53 is moved by the third disengagement cylinder 55 until the steel tape is disengaged from the notch of the tape slot 531, so that when the subsequent tape is pre-tightened, the steel tape head can be sleeved on the end of the limit plate 4 away from the tape winding guide assembly 3.

[0064] Reference Figure 1 and Figure 2 In this embodiment, since the trajectory of the steel belt is unstable when it moves in the inner belt passage 13 of the movable group 82, firstly, the position of the winding block 53 can be changed by the second adjusting cylinder 56, and secondly, a guide slope 532 is integrally formed on the two opposite side walls of one opening of the winding groove 531. Then, when the winding groove 531 is connected to the inner belt passage 13, the guide slope can guide the steel belt to move toward the center direction of the winding groove 531, so that the steel belt can smoothly pass through the winding groove 531.

[0065] Reference Figure 1 and Figure 2The downward pressing welding assembly 6 includes a first downward pressing block 61, a first downward pressing cylinder 62, a second downward pressing block 63 and a second downward pressing cylinder 64. The first downward pressing block 61 is slidably connected to the sliding table 2 through the first downward pressing cylinder 62. The first downward pressing block 61 is located at a position where the movable group 82 is closer to the bending assembly 5. A first light-transmitting through groove 611 for allowing the laser to pass through is provided on the surface of the first downward pressing block 61 away from the bending assembly 5. The first downward pressing block 61 can move in a direction close to or away from the limiting plate 4; the second downward pressing block 63 is connected to the sliding table 2 through the second downward pressing cylinder 64. The second downward pressing block 63 is located at a position where the movable group 82 is closer to the fixed group 81. A second light-transmitting through groove 631 is provided on the surface of the second downward pressing block 63 close to the first downward pressing block 61. The second downward pressing block 63 can move in a direction close to or away from the limiting plate 4.

[0066] Reference Figure 1 and Figure 2 When performing the downward pressure welding work, the first downward pressure cylinder 62 is first used to move the first downward pressure block 61 toward the direction close to the limit plate 4 until the first downward pressure block 61 presses the inner and outer steel strips, and then the laser passes through the first light-transmitting groove 611 to weld the inner and outer steel strips, and then the second downward pressure cylinder 64 moves the second downward pressure block 63 toward the direction close to the limit plate 4 until the second downward pressure block 63 presses the inner and outer steel strips, and finally the laser passes through the second light-transmitting groove 631, so that welding can be performed at two positions of the inner and outer steel strips.

[0067] Reference Figure 1 and Figure 2 In order to be able to cut the outer steel strip while the second pressing block 63 is pressed down, firstly, the two fixed partitions 811 connected to the sliding table 2 are extended to a position corresponding to the limit plate 4 away from one end of the winding guide assembly 3, so as to form a knife seat part 9; secondly, the cutting assembly 7 is a blade block 71, and the blade block 71 is fixedly connected to a side of the second pressing block 63 away from the first pressing block 61. At the same time, when the second pressing block 63 moves in a direction close to the limit plate 4, the blade block 71 slides and abuts against the knife seat part 9 to cut the outer steel strip.

[0068] The implementation principle of a steel strip cutting and welding device for bundling battery modules in the embodiment of the present application is as follows: in the process of the traction device gradually delivering the steel strip forward, the steel strip is first allowed to wrap around the battery module through the strip winding guide assembly 3 until the steel strip passes through the bending assembly 5 and reaches a predetermined position, and then the bending assembly 5 bends the steel strip head into a U shape, and then the bending assembly 5 is separated from the steel strip head, and then the sliding table 2 allows the limit plate 4 to move in the direction close to the battery module. At the same time, in this process, the traction device delivers the steel strip backward so that the steel strip head is covered on the limit plate 4, and at the same time, the strip winding guide assembly 3 allows the steel strip to leave the strip exit channel 32 until the limit plate 4 abuts against the outer wall of the battery module. At this time, the steel strip is tightly tied. On the outer wall of the battery module, the inner and outer steel strips are finally welded together by pressing down the welding assembly 6, and then the outer steel strip is switched by the cutting assembly 7, thereby completing the bundling of the battery module. Compared with the method of clamping the material head by the clamping assembly during the pre-tightening of the pull belt, in this design method, the steel strip material head will be sleeved on the end of the limit plate 4 away from the belt channel 32 when the pull belt is pre-tightened, so as to serve as a force point in the pre-tightening process of the steel strip. After the steel strip is tied to the battery module, the maximum distance between the part of the steel strip close to the material head and the battery module is only the thickness of the limit plate 4, so the distance between the steel strip and the battery module can be further reduced, so that the battery module can be bundled more firmly.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steel strip cutting and welding device for bundling battery modules, characterized in that: include: The frame (1) is provided with a welding area (11); A sliding platform (2) is arranged in the welding area (11); A tape winding guide assembly (3) is connected to the sliding platform (2) and is used to form a tape entry channel (31) and a tape exit channel (32). The steel tape head passes through the tape entry channel (31), the welding area (11), the tape exit channel (32) and the welding area (11) in sequence to complete tape winding. When the tape is pre-tightened, the steel tape leaves the tape exit channel (32); A limit plate (4) is connected to the sliding platform (2), and when the tension belt is pre-tightened, the sliding platform (2) is used to allow the limit plate (4) to abut against the workpiece; A bending assembly (5) is connected to the sliding platform (2). After the strip is wound, the bending assembly (5) bends the steel strip head so as to allow the steel strip head to be inserted into the end of the limiting plate (4) away from the strip-leaving channel (32) when the strip is pre-tightened; A downward pressing welding assembly (6) is connected to the sliding platform (2) and is used to press the inner and outer steel belts onto the limiting plate (4) and weld them after the tension belt is pre-tightened; A cutting assembly (7), connected to the sliding platform (2), and used for cutting the outer steel strip; The tape winding guide assembly (3) comprises: A movable guide block (33) is connected to the sliding platform (2), the belt entry channel (31) is formed between the movable guide block (33) and the frame (1), a first belt threading groove (331) is provided on the surface of the movable guide block (33) perpendicular to the center line of the steel belt, the first belt threading groove (331) is used for the steel belt to pass through to form the belt exit channel (32), and an auxiliary notch (332) is provided on the side wall of the first belt threading groove (331) close to the center of the steel belt. An auxiliary guide motor (34) is arranged on the movable guide block (33); An auxiliary pulley (35) is arranged in the auxiliary notch (332), the auxiliary pulley (35) is connected to the output shaft of the auxiliary pulley motor (34), and the auxiliary pulley (35) is used for rolling contact with the steel belt; A first disengagement cylinder (36) is connected to the sliding platform (2), and the first disengagement cylinder (36) is connected to the movable guide block (33) and is used to make the steel belt leave the notch of the first belt-threading slot (331) when the belt is pre-tightened; The frame (1) is provided with an auxiliary partition component (8), and the auxiliary partition component (8) is formed with an outer belt threading channel (12) and an inner belt threading channel (13) in the welding area (11), and the outer belt threading channel (12) is connected to the belt entry channel (31), and the inner belt threading channel (13) is connected to the belt exit channel (32), so as to allow the steel belt head to enter the bending component (5); the auxiliary partition component (8) is divided into a fixed group (81) and a movable group (82), the fixed group (81) is located between the limit plate (4) and the belt winding guide component (3), and the movable group (82) is arranged corresponding to the limit plate (4), and after the belt is pre-tightened, the inner belt threading channel (13) at the fixed group (81) is released, and the outer belt threading channel (12) and the inner belt threading channel (13) at the movable group (82) are released; The bending assembly (5) comprises: A mounting seat (51) connected to the sliding platform (2); A rotating shaft (52) rotatably connected to the mounting seat (51); A tape reel block (53) is connected to the rotating shaft (52), and the tape reel block (53) is provided with a tape reel slot (531). After the steel tape head leaves the inner tape passage (13) and passes through the tape reel slot (531), the rotating shaft (52) rotates to fold the steel tape head to the side of the limiting plate (4) away from the movable group (82); A tape drive member (54) is disposed on the mounting seat (51) and connected to the rotating shaft (52); The third disengagement cylinder (55) is arranged on the sliding platform (2), and the piston rod of the third disengagement cylinder (55) is connected to the mounting seat (51). Before the pull belt is pre-tightened, it is used to make the steel belt leave the groove of the winding groove (531).

2. The steel strip cutting and welding device for bundling battery modules according to claim 1, characterized in that: The movable guide block (33) is provided with a first regulating cylinder (37), the piston rod of which is connected to the auxiliary guide motor (34) and is used to change the distance between the auxiliary guide wheel (35) and the side wall of the first belt threading slot (331) away from the center around which the steel belt is wrapped.

3. The steel strip cutting and welding device for bundling battery modules according to claim 1, characterized in that: The fixed group (81) includes three fixed baffles (811), which are arranged in parallel and at intervals, wherein two of the fixed baffles (811) are connected to the sliding platform (2) to form the outer belt threading channel (12), and the remaining fixed baffle (811) is connected to the movable guide block (33) to form the inner belt threading channel (13); the movable group (82) includes a movable baffle (821) and a second disengagement cylinder (822), wherein the movable baffle (821) 1) is connected to the sliding platform (2), the inner belt threading channel (13) is formed between the outer wall of the movable partition (821) and the limiting plate (4), and the movable partition (821) is provided with a second belt threading groove (8211) for forming the outer belt threading channel (12); the second disengagement cylinder (822) is connected to the movable partition (821) and is used to move the movable partition (821) to release the outer belt threading channel (12) and the inner belt threading channel (13) of the movable group (82).

4. The steel strip cutting and welding device for bundling battery modules according to claim 1, characterized in that: The sliding platform (2) is provided with a second adjusting cylinder (56), the piston rod of which is connected to the third disengaging cylinder (55) and is used to adjust the position of the tape block (53) along the connecting direction of the outer tape threading channel (12) and the inner tape threading channel (13); a tape guide slope (532) is provided on two opposite side walls of one opening of the tape threading slot (531), and when the tape threading slot (531) is connected to the inner tape threading channel (13), the tape guide slope (532) is used to guide the steel tape to move toward the center direction of the tape threading slot (531).

5. The steel strip cutting and welding device for bundling battery modules according to claim 3, characterized in that: The downward pressure welding assembly (6) comprises: A first pressing block (61) is slidably connected to the sliding platform (2), the first pressing block (61) is located at a position of the movable group (82) closer to the bending assembly (5), and the first pressing block (61) is provided with a first light-transmitting groove (611) for allowing laser light to pass through; A first pressing cylinder (62) connected to the first pressing block (61); A second pressing block (63) is slidably connected to the sliding platform (2); the second pressing block (63) is located at a position of the movable group (82) closer to the fixed group (81); a second light-transmitting groove (631) is provided on a surface of the second pressing block (63) close to the first pressing block (61); a notch of the second light-transmitting groove (631) is arranged opposite to a notch of the first light-transmitting groove (611); The second pressing cylinder (64) is connected to the second pressing block (63).

6. The steel strip cutting and welding device for bundling battery modules according to claim 5, characterized in that: The two fixed partitions (811) connected to the sliding platform (2) partially extend to a position corresponding to the limiting plate (4) to form a knife seat portion (9); the cutting assembly (7) is a blade block (71), and the blade block (71) is connected to a side of the second lower pressing block (63) away from the first lower pressing block (61). When the second lower pressing block (63) moves in a direction close to the limiting plate (4), the blade block (71) slides and abuts against the knife seat portion (9) to cut the steel strip.

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