A new energy automobile power battery pack fastening belt winding device

Abstract

The application relates to the technical field of secondary batteries, in particular to a winding equipment for a new energy automobile power battery pack fastening belt. The winding equipment comprises a frame body, the frame body is provided with a driving module, the driving module is provided with a conveying module, a first electric push rod is fixedly connected in the conveying module, the telescopic end of the first electric push rod is fixedly connected with a sliding plate, the sliding plate is slidingly connected with a limiting frame, symmetrically distributed supporting frames are fixedly connected with the sliding plate, the supporting frames are slidingly connected with rotating frames, the rotating frames are rotationally connected with positioning wheels, a sliding frame is slidingly connected with the limiting frame, a second electric push rod is fixedly connected with the sliding frame, and the telescopic end of the second electric push rod is provided with a backing plate. The positioning wheels are used for extruding and fixing the fastening belts on the two sides of the backing plate, the backing plate is taken out from between the fastening belts and the batteries, the fastening belts in the region are attached to the surface of the battery pack, and therefore the fixing effect of the fastening belts on the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of secondary batteries, in particular to a winding equipment for a new energy automobile power battery pack fastening belt. BACKGROUND

[0002] A battery pack of a new energy automobile is usually composed of multiple battery modules, and the battery used is a charging battery. In the production process, the battery modules are usually sequentially placed in a battery shell, and then electrical connection and fixation between the modules are performed to finally form a complete battery pack. In the process of assembling, transporting and transferring the battery modules, fastening belts are usually used to fix the modules from the outside for the convenience of operation. When the existing winding equipment is used to fix the modules, the two ends of the fastening belt need to be connected and fixed. The fixing mechanism itself occupies a certain space and thickness. Therefore, in order to realize effective connection and fixation, the total length of the fastening belt must be greater than the theoretical minimum length required for just one round of the module, which results in that the fastening belt cannot exert sufficient tension, so that the overall fastening degree of the fixed module is insufficient, and the internal components of the module are at risk of relative looseness. This looseness makes the module prone to misalignment and deviation during transportation, which not only increases the transportation risk, but also affects the efficiency of subsequent assembly. SUMMARY

[0003] The application provides a winding equipment for a new energy automobile power battery pack fastening belt to solve the shortcomings in the above background.

[0004] The technical scheme is as follows: a winding equipment for a new energy automobile power battery pack fastening belt, comprising: a frame body, the frame body is provided with a driving module, and a conveying module is arranged on the driving module; a first electric push rod is fixedly connected in the conveying module, a sliding plate is fixedly connected to the extension end of the first electric push rod, the sliding plate is slidingly connected with a limiting frame, the limiting frame is slidingly connected with the conveying module, and a first spring is fixedly connected between the sliding plate and the limiting frame; symmetrically distributed support frames are fixedly connected to the sliding plate, the support frames are slidingly connected with rotating frames, and the rotating frames are rotatably connected with positioning wheels; a sliding frame is slidingly connected to the upper side of the limiting frame; a second electric push rod is fixedly connected to the sliding frame, and a pad plate is arranged at the extension end of the second electric push rod; and a transmission assembly is arranged on the second electric push rod, and the transmission assembly is used to drive the pad plate to move.

[0005] Further, a limiting surface is arranged on the support frame, the limiting surface is used to limit the rotation of the positioning wheel, and a rough surface is arranged between the support frame and the rotating frame, which is used to increase the resistance when the support frame and the rotating frame relatively move.

[0006] Further, the rotating frame is provided with convex strips symmetrically distributed, and the limiting frame is provided with a stepped surface for limiting the position of the convex strips.

[0007] Further, the transmission assembly comprises a lifting frame slidably connected to the telescopic end of the second electric push rod, the lifting frame is rotatably connected with a rotating rod, the rotating rod is fixedly connected with the base plate, the lifting frame is provided with a guide frame, and the rotating rod slides in the guide frame of the lifting frame; an extrusion frame is slidably connected to the base plate, the extrusion frame is fixedly connected with equidistantly distributed friction strips, the base plate is provided with a number of through grooves corresponding to the number of the friction strips, and the friction strips pass through the corresponding through grooves on the base plate; and an adjusting assembly is arranged on the extrusion frame and used for separating the friction strips from the fastening belt.

[0008] Further, the adjusting assembly comprises a moving frame fixedly connected to the extrusion frame, the moving frame is slidably connected with the base plate, and a second spring is arranged between the moving frame and the base plate; and a guide strip is fixedly connected to the extrusion frame, and an inclined surface is arranged on the base plate and used for guiding the movement of the guide strip.

[0009] Further, the telescopic end of the second electric push rod is fixedly connected with an extrusion plate, and the opposite sides of the extrusion plate and the moving frame are both provided with inclined surfaces, and the inclined surfaces on the extrusion plate are used for pushing the moving frame to move.

[0010] Further, the height of the through groove on the base plate is greater than the thickness of the friction strip, and the upper side of the through groove on the base plate is an inclined surface used for guiding the movement of the friction strip.

[0011] Further, the base plate is provided with a limiting strip used for limiting the positions of the base plate and the extrusion frame, and the limiting strip is provided with an inclined surface used for guiding the movement of the extrusion frame.

[0012] Further, the rotating assembly comprises a rotating assembly arranged on the sliding frame and used for driving the base plate to swing during the separation of the base plate from the fastening belt, the rotating assembly comprises symmetrically distributed limiting columns all fixedly connected to the extrusion frame, the sliding frame is provided with a number of limiting grooves corresponding to the number of the limiting columns, and the limiting grooves on the sliding frame are used for limiting the positions of the limiting columns; a limiting disc is fixedly connected to the rotating rod, the limiting disc is provided with symmetrically distributed convex blocks; and a plurality of vibration blocks are all fixedly connected into the guide frame on the sliding frame, the vibration blocks make the limiting disc reciprocate by extruding the convex blocks on the limiting disc.

[0013] Further, the distance between two adjacent vibration blocks in the same column in the vertical direction gradually increases from bottom to top.

[0014] The present application has at least the following advantages compared with the prior art: 1. The present application fixes the fastening belt on both sides of the positioning wheel by extrusion, then removes the pad from between the fastening belt and the battery, so that the fastening belt is attached to the surface of the battery pack, and the actual use length of the fastening belt is close to the actual circumference of the battery pack, thereby improving the fixing effect of the fastening belt on the battery pack.

[0015] 2. When separating the pad and the fastening belt, the present application guides the extrusion frame to move by the guide strip, so that the friction strip is separated from the fastening belt, and the resistance received by the pad during movement is reduced, thereby reducing the probability of displacement of the fastening belt due to large stress during movement of the pad.

[0016] 3. During the process of separating the pad and the fastening belt, the present application makes the pad reciprocate relative to the fastening belt by extruding the limiting disc with the vibration block, so that the probability of deformation accumulation of the fastening belt in the movement direction of the pad is reduced, the resistance during movement of the pad is further reduced, and the movement of the pad is accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0018] Figure 2 is a schematic diagram of the three-dimensional structure of the present application frame, drive module and conveying module;

[0019] Figure 3 is a schematic diagram of the three-dimensional structure of the first electric push rod, limiting frame and sliding frame of the present application;

[0020] Figure 4 is a schematic diagram of the three-dimensional structure of the support frame, rotating frame and positioning wheel of the present application;

[0021] Figure 5 is a schematic diagram of the three-dimensional structure of the sliding plate, limiting frame and first spring of the present application;

[0022] Figure 6 is a schematic diagram of the three-dimensional structure of the limiting frame, support frame and positioning wheel of the present application;

[0023] Figure 7 is a schematic diagram of the three-dimensional structure of the moving frame, second spring and guide strip of the present application;

[0024] Figure 8 is a schematic diagram of the three-dimensional structure of the lifting frame, friction strip and extrusion plate of the present application;

[0025] Figure 9 is a schematic diagram of the three-dimensional structure of the lifting frame, rotating rod and limiting disc of the present application;

[0026] Figure 10 is a schematic diagram of the three-dimensional structure of the rotating rod, limiting disc and vibration block of the present application.

[0027] Label: 1-frame, 101-moving module, 102-guiding module, 103-extrusion module, 2-driving module, 3-conveying module, 4-first electric push rod, 5-sliding plate, 6-limiting frame, 7-support frame, 8-rotating frame, 9-positioning wheel, 10-sliding frame, 11-second electric push rod, 12-pad plate, 13-first spring, 14-limiting surface, 15-convex strip, 16-lifting frame, 17-rotating rod, 18-extrusion frame, 19-friction strip, 20-moving frame, 21-second spring, 23-guiding strip, 24-extrusion plate, 25-limiting strip, 26-limiting column, 27-limiting disc, 28-vibration block. DETAILED DESCRIPTION

[0028] The above scheme will be further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not intended to limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not specified are usually the conditions in the conventional experiments.

[0029] Example 1: A new energy automobile power battery pack fastening belt winding device, as shown in Figures 1-6 , comprising: a frame 1, the frame 1 is provided with a driving module 2, the driving module 2 is provided with a conveying module 3; a first electric push rod 4 is fixedly connected in the conveying module 3, the telescopic end of the first electric push rod 4 is fixedly connected with a sliding plate 5, the sliding plate 5 is slidingly connected with a limiting frame 6, the limiting frame 6 is slidingly connected with the conveying module 3, and the first spring 13 is fixedly connected between the sliding plate 5 and the limiting frame 6; symmetrically distributed support frames 7 are fixedly connected to the sliding plate 5, the support frames 7 are slidingly connected with rotating frames 8, and the rotating frames 8 are rotatably connected with positioning wheels 9; a sliding frame 10 is slidingly connected to the upper side of the limiting frame 6; a second electric push rod 11 is fixedly connected to the sliding frame 10, and the telescopic end of the second electric push rod 11 is provided with a pad plate 12; a transmission assembly is arranged on the second electric push rod 11, and the transmission assembly is used to drive the pad plate 12 to move.

[0030] Further, as shown in Figure 6 , the support frame 7 is provided with a limiting surface 14, the limiting surface 14 is used to limit the rotation of the positioning wheel 9, and a rough surface is arranged between the support frame 7 and the rotating frame 8, which is used to increase the resistance when the support frame 7 and the rotating frame 8 relatively move.

[0031] Further, as shown in Figure 6 , the rotating frame 8 is provided with symmetrically distributed convex strips 15, and a stepped surface is arranged in the limiting frame 6, and the stepped surface in the limiting frame 6 is used to limit the position of the convex strip 15.

[0032] The above scheme provides a way of taking the gusset plate 12 away from the fastening belt and the battery pack when fixing the fastening belt; the front side of the frame body 1 is provided with a moving module 101, the moving module 101 and the conveying module 3 are both provided with a guide module 102, the guide module 102 is provided with a guide groove, the guide groove of the guide module 102 is used for guiding the movement of the fastening belt, so that the fastening belt is wrapped around the battery pack, initially, the two guide modules 102 are in a separated state, the frame body 1 is provided with a pressing module 103, the pressing module 103 is located between the moving module 101 and the conveying module 3, the pressing module 103 is used for driving the movement of the battery pack and pressing the battery pack, so that the adjacent batteries are tightly attached to each other, the moving module 101, the guide module 102 and the pressing module 103 are all existing devices, and the specific structures thereof will not be described in detail.

[0033] The driving module 2 and the conveying module 3 are both existing devices, and the specific structures and use modes thereof will not be described in detail, the driving module 2 is used for adjusting the position of the conveying module 3, the conveying module 3 is externally connected with a fastening belt storage device, and the conveying module 3 is used for releasing the fastening belt; the first electric push rod 4 is used for driving the movement of the sliding plate 5, so that the sliding plate 5 is close to the battery pack, the limiting frame 6 is provided with a guide groove, initially, the guide groove on the limiting frame 6 is flush with the guide groove on the adjacent guide module 102, the limiting frame 6 is provided with a heating module, the heating module is used for hot melting connection of the two ends of the fastening belt, the first spring 13 is used for driving the relative movement of the sliding plate 5 and the limiting frame 6, so that they are reset, the sliding plate 5 and the limiting frame 6 are both provided with a through hole for the fastening belt to pass through; the support frame 7 has two, the two support frames 7 are respectively located on the left and right sides of the sliding plate 5, the rotating frame 8 is located on the front side of the support frame 7, the rotating frame 8 is provided with a sliding groove, the support frame 7 slides in the sliding groove of the rotating frame 8, and initially, the support frame 7 is located at the rear part of the sliding groove on the rotating frame 8, the above rough surface is located between the support frame 7 and the sliding groove of the rotating frame 8, the rough surface is used for increasing the resistance when the support frame 7 and the rotating frame 8 relatively move, so that the relative position of the support frame 7 and the rotating frame 8 is kept stable, the surface of the positioning wheel 9 is also provided with a rough surface, which is used for increasing the friction between the positioning wheel 9 and the fastening belt.

[0034] The sliding frame 10 is composed of a horizontal part and a vertical part, the limiting frame 6 is provided with a sliding groove, the vertical part of the sliding frame 10 is located in the sliding groove of the limiting frame 6 and slides, and initially, the vertical part of the sliding frame 10 is located at the front part of the sliding groove on the limiting frame 6; the second electric push rod 11 is located on the horizontal part of the sliding frame 10, and the second electric push rod 11 is used to drive the base plate 12 to move, after the fastening belt is preliminarily fixed, the second electric push rod 11 drives the base plate 12 to move upwards and separates from the fastening belt, the extension end of the second electric push rod 11 is in an extended state initially, the distance between the two positioning wheels 9 is greater than the width of the base plate 12, and the fastening belt of the edge area of the base plate 12 is fixed by the positioning wheels 9; the limiting surface 14 is located on the front side of the support frame 7, the limiting surface 14 is provided with a rough surface, after the support frame 7 moves to the front part of the sliding groove on the rotating frame 8, the limiting surface 14 is in contact with the positioning wheels 9, the positioning wheels 9 cannot rotate in a frictional mode, so that the positioning wheels 9 fix the fastening belt; one rotating frame 8 has two convex strips 15 distributed upwards and downwards, the limiting frame 6 limits the position of the rotating frame 8 through the convex strips 15, and the support frame 7 moves backwards relative to the rotating frame 8 to release the limiting of the positioning wheels 9.

[0035] Further, as shown in Figure 4 and Figures 7-10 , the transmission assembly comprises: a lifting frame 16 slidably connected to the extension end of the second electric push rod 11, the lifting frame 16 is rotationally connected with a rotating rod 17, the rotating rod 17 is fixedly connected with the base plate 12, the sliding frame 10 is provided with a guide frame, and the rotating rod 17 slides in the guide frame of the sliding frame 10; an extrusion frame 18 slidably connected to the base plate 12, the extrusion frame 18 is fixedly connected with equidistantly distributed friction strips 19, the base plate 12 is provided with a number of through grooves corresponding to the number of the friction strips 19, and the friction strips 19 pass through the corresponding through grooves on the base plate 12; an adjusting assembly arranged on the extrusion frame 18 and used to separate the friction strips 19 from the fastening belt.

[0036] Further, as shown in Figure 4 and Figures 7-10 , the adjusting assembly comprises: a moving frame 20 fixedly connected to the extrusion frame 18, the moving frame 20 is slidably connected with the base plate 12, and a second spring 21 is arranged between the moving frame 20 and the base plate 12; a guide strip 23 fixedly connected to the extrusion frame 18, and an inclined surface is arranged on the base plate 12 and used to guide the movement of the guide strip 23.

[0037] In the above scheme, the lower part of the second electric push rod 11 is provided with a sliding cavity, the lifting frame 16 is located in the sliding cavity of the second electric push rod 11, and the upper side of the lifting frame 16 is in contact with the sliding cavity of the second electric push rod 11 at the beginning. The rotating rod 17 is located at the lower part of the guide frame on the sliding frame 10. In this paper, the friction strip 19 is made of flexible material, and the friction strip 19 has five, which are uniformly distributed on the rear side of the extrusion frame 18. The friction strip 19 is used to fix the adjacent end of the fastening belt. At the beginning, the friction strip 19 passes through the through slot on the base plate 12 and protrudes backward. The moving frame 20 is located on the upper side of the extrusion frame 18. The base plate 12 is provided with a guide groove, and the moving frame 20 is slidably connected in the guide groove of the base plate 12. The second spring 21 is fixedly connected with the moving frame 20, and the second spring 21 is in contact with the base plate 12. The second spring 21 is used to push the moving frame 20 to move upward. At the beginning, the moving frame 20 is located at the rear part of the guide groove on the base plate 12, and the second spring 21 is in a compressed state. The guide strip 23 is located on the upper side of the extrusion frame 18, and the upper side of the guide strip 23 is inclined backward. When the extrusion frame 18 moves upward, the upper side of the guide strip 23 passes through the inclined surface on the extrusion pad 12, so that the extrusion frame 18 drives the friction strip 19 to move forward and separate from the fastening belt.

[0038] Further, as shown in Figure 4 and Figures 7-10 , the telescopic end of the second electric push rod 11 is fixedly connected with the extrusion plate 24, and the opposite sides of the extrusion plate 24 and the moving frame 20 are provided with inclined surfaces. The inclined surface on the extrusion plate 24 is used to push the moving frame 20 to move.

[0039] Further, as shown in Figure 9 , the height of the through slot on the base plate 12 is greater than the thickness of the friction strip 19, and the upper side of the through slot on the base plate 12 is an inclined surface, which is used to guide the movement of the friction strip 19.

[0040] Further, as shown in Figure 4 and Figures 7-9 , the base plate 12 is provided with a limiting strip 25, which is used to limit the position of the base plate 12 and the extrusion frame 18. The limiting strip 25 is provided with an inclined surface for guiding the movement of the extrusion frame 18.

[0041] The above scheme provides a way to drive the friction strip 19 to protrude out of the pad plate 12 and limit the position of the extrusion frame 18; the extrusion plate 24 is located at the lower part of the telescopic end of the second electric push rod 11, the front part of the lower side of the extrusion plate 24 is provided with an inclined surface, the rear part of the upper side of the moving frame 20 is provided with an inclined surface, when the extrusion plate 24 moves downward, the extrusion plate 24 pushes the moving frame 20 to move downward and rearward through the inclined surface thereon; the inclined surface on the through slot of the pad plate 12 is inclined from top to bottom and rearward, the inclined surface on the through slot of the pad plate 12 is used to guide the deformation and movement of the friction strip 19, and facilitates the friction strip 19 to enter it; the limiting strip 25 is located at the lower part of the sliding frame 10, the limiting strip 25 is used to support the lower part of the extrusion frame 18, reduce the probability of deformation of the lower part of the extrusion frame 18 after being pressed for a long time, and ensure the extrusion force of the lower friction strip 19 on the fastening belt, at the beginning, the front side of the extrusion frame 18 is in contact with the rear side of the limiting strip 25, and the limiting strip 25 is provided with an inclined surface, which is used to guide the extrusion frame 18 to move rearward in cooperation with the extrusion plate 24.

[0042] Workflow: When using the device to wind the fastening belt around the battery pack, the worker places the battery pack that needs to be fixed into the extrusion module 103 and arranges it neatly, then starts the extrusion module 103 to compact the battery pack so that the adjacent batteries are in close contact, then starts the moving module 101 and the driving module 2, the moving module 101 drives the guide module 102 thereon to move rearward and close to the battery pack, the driving module 2 drives the guide module 102 to move forward and close to the battery pack through the conveying module 3, until the two guide modules 102 contact (i.e. Figure 2 ), the driving module 2 and the moving module 101 are closed, at this time the front side of the conveying module 3 is in contact with the battery pack, the conveying module 3 conveys the fastening belt, so that the fastening belt passes through the through holes in the sliding plate 5 and the limiting frame 6 in turn and gradually winds around the battery pack along the two guide modules 102 for one turn, until the conveying module 3 is closed after the fastening belt protrudes by a specified length and the fastening belt appears an overlapping region, at this time the overlapping region of the fastening belt is located between the limiting frame 6 and the pad plate 12 and the overlapping length is less than the distance between the two support frames 7.

[0043] After the above conveying module 3 is closed, the worker starts the first electric push rod 4, the telescopic end of the first electric push rod 4 drives the sliding plate 5 to move forward, the sliding plate 5 drives the support frame 7 and the parts thereon to move synchronously, at the same time the sliding plate 5 drives the limiting frame 6 and the parts thereon to move forward through the first spring 13, the limiting frame 6 drives the sliding frame 10 and the other parts thereon to move forward, the sliding frame 10 drives the parts thereon to move synchronously, so that the pad plate 12 gradually approaches the battery pack, until the front side of the pad plate 12 is in contact with the battery pack, then the pad plate 12 stops moving, and the sliding frame 10 and the parts thereon stop moving.

[0044] After the sliding frame 10 stops moving, the telescopic end of the first electric push rod 4 continues to drive the sliding plate 5 to move, the limiting frame 6 moves forward relative to the pad 12 and gradually pushes the overlapping area of the fastening belt, during which the limiting frame 6 cooperates with the friction strip 19 to extrude the fastening belt, until the limiting frame 6 cannot move, the limiting frame 6 and the friction strip 19 complete the fixation of the fastening belt in the adjacent area, the sliding plate 5 continues to drive the support frame 7 to move and compress the first spring 13, the support frame 7 drives the positioning wheel 9 to move forward through the rotating frame 8, the positioning wheel 9 extrudes the adjacent fastening belt, until the positioning wheel 9 contacts the surface of the battery pack through the fastening belt, the first electric push rod 4 is closed, and the positioning wheel 9 stops moving, so as to change the bending position of the fastening belt, so that the fastening belt is more attached to the surface of the battery pack after being tightened, then the worker starts the conveying module 3, the conveying module 3 retracts the excess fastening belt, during which the positioning wheel 9 rotates under the drive of the fastening belt, and after the fastening belt is tightened, the conveying module 3 cuts off the fastening belt.

[0045] After the above excess fastening belt is retracted, the worker starts the first electric push rod 4 again, so that the sliding plate 5 drives the support frame 7 to move forward again, so that the support frame 7 overcomes the resistance of the rough surface between the support frame 7 and the rotating frame 8 to approach the positioning wheel 9, when the support frame 7 contacts the positioning wheel 9, the first electric push rod 4 is closed again, and the support frame 7 completes the limiting of the positioning wheel 9, so that the positioning wheel 9 no longer rotates and fixes the adjacent area of the fastening belt, so that the fastening belt cannot pass through the positioning wheel 9 in its own elastic force, so as to ensure that the position of the fastening belt does not change.

[0046] After the support frame 7 completes the fixing of the positioning wheel 9, the staff starts the second electric push rod 11, and the telescopic end of the second electric push rod 11 drives the extrusion plate 24 to move upwards, so that the extrusion force of the extrusion plate 24 on the moving frame 20 is reduced. The moving frame 20 drives the extrusion frame 18 to move upwards relative to the base plate 12 under the pushing of the second spring 21. The extrusion frame 18 drives the guide strip 23 to move upwards and gradually separates from the rear side of the limiting strip 25. The friction strip 19 deforms and adapts to the change of the position of the extrusion frame 18. Until the upper side of the guide strip 23 contacts the inclined surface on the upper side of the base plate 12, the extrusion frame 18 separates from the rear side of the limiting strip 25. The guide strip 23 moves forward under the guidance of the inclined surface, and the extrusion frame 18 drives the friction strip 19 to move forward and separate from the fastening belt, so as to reduce the resistance when the base plate 12 moves upwards. When the upper side of the extrusion frame 18 contacts the base plate 12, the extrusion frame 18 stops moving upwards relative to the base plate 12. The upper end of the lifting frame 16 is located at the bottom of the telescopic end of the second electric push rod 11. The telescopic end of the second electric push rod 11 drives the lifting frame 16 to move upwards, so that the lifting frame 16 drives the base plate 12 to move upwards and gradually separates from the fastening belt. After the base plate 12 separates from the fastening belt, the base plate 12 still contacts the limiting frame 6 at the lower part, the limiting frame 6 does not move, and the two ends of the fastening belt are inclined to the battery pack direction due to its own hardness, and the two ends of the fastening belt are in close contact. Until the telescopic end of the second electric push rod 11 is retracted, it is automatically closed. The base plate 12 separates from the limiting frame 6, the limiting frame 6 moves forward under the pushing of the first spring 13 and presses the overlapping area of the fastening belt again, and then the heating module of the limiting frame 6 is started to heat and melt the fastening belt.

[0047] After the fastening belt is heat-melted and connected, the staff starts the first electric push rod 4 to retract the telescopic end to the original position. The retraction of the telescopic end of the first electric push rod 4 drives the parts above it to move reversely to the original position. The first spring 13 pushes the sliding plate 5 to move reversely to the original position relative to the limiting frame 6. During this process, after the convex strip 15 contacts the stepped surface of the limiting frame 6, the rotating frame 8 stops moving relative to the limiting frame 6, so that the support frame 7 separates from the positioning wheel 9 to the original position. Then the staff starts the second electric push rod 11, and the telescopic end of the second electric push rod 11 extends, so that the base plate 12 moves downwards to the original position. Until the rotating rod 17 is located at the lower part of the guide frame on the sliding frame 10, the base plate 12 stops moving. As the telescopic end of the second electric push rod 11 continues to extend, when the extrusion plate 24 contacts the moving frame 20, the extrusion plate 24 pushes the moving frame 20 to move downwards and backwards, so that the extrusion frame 18 drives the parts above it to return to the original position. Then the staff resets the moving module 101, the guide module 102 and the extrusion module 103, and takes out the battery pack for replacement.

[0048] Example 2: based on example 1, as Figures 7-10As shown, further comprising: a rotating assembly arranged on the sliding frame 10, used to drive the pad plate 12 to swing during the process of separating the pad plate 12 from the fastening belt, the rotating assembly comprising: symmetrically distributed limiting posts 26, each being fixedly connected to the extrusion frame 18, the sliding frame 10 being provided with limiting grooves in the same number as the limiting posts 26, the limiting grooves on the sliding frame 10 being used to limit the position of the limiting posts 26; a limiting disc 27 fixedly connected to the rotating rod 17, the limiting disc 27 being provided with symmetrically distributed protrusions; and a plurality of vibration blocks 28, each being fixedly connected to the guide frame on the sliding frame 10, the vibration blocks 28 being used to make the limiting disc 27 swing back and forth by extruding the protrusions on the limiting disc 27.

[0049] Further, as shown, Figures 7-10 The distance between the adjacent two vibration blocks 28 in the same column in the vertical direction gradually increases from bottom to top.

[0050] The above scheme provides a way to drive the pad plate 12 to swing back and forth during the process of separating the pad plate 12 from the fastening belt; the limiting posts 26 are two, the limiting grooves of the sliding frame 10 are in the front-rear direction, used to make the limiting posts 26 slide forward and backward along the sliding frame 10, when the extrusion frame 18 moves downward, the limiting posts 26 move and enter the limiting grooves of the sliding frame 10 to adjust the angle of the extrusion frame 18, avoiding the deviation of the position and angle of the extrusion frame 18, initially, the limiting posts 26 are located in the limiting grooves of the sliding frame 10, during the process of moving the extrusion frame 18 upward, after the upper side of the extrusion frame 18 contacts the pad plate 12, the limiting posts 26 have been separated from the limiting grooves of the sliding frame 10, the limiting disc 27 is located at the rear end of the rotating rod 17, the limiting disc 27 has two protrusions, and the two protrusions are located on the left and right sides of the limiting disc 27; in this paper, the vibration blocks 28 are divided into two groups, and are located on the left and right sides of the limiting disc 27 respectively, the vibration blocks 28 in the two groups are staggered in the vertical direction, used to make the vibration blocks 28 extrude the protrusions on the limiting disc 27 when the limiting disc 27 passes through the vibration blocks 28, so that the limiting disc 27 drives the pad plate 12 to swing through the rotating rod 17, thereby changing the direction and position of the force between the pad plate 12 and the fastening belt when the pad plate 12 moves upward, avoiding the force between the pad plate 12 and the fastening belt always being directed to one side, thereby reducing the probability of the fastening belt deviating from the moving direction of the pad plate 12 and accumulating; the distance between the adjacent two vibration blocks 28 is limited to gradually increase the swing range of the rotating rod 17 from bottom to top.

[0051] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A winding device for fastening straps of power battery packs in new energy vehicles, characterized in that, Including: The frame (1) is provided with a drive module (2), and the drive module (2) is provided with a conveying module (3). The first electric push rod (4) is fixedly connected to the conveying module (3). The telescopic end of the first electric push rod (4) is fixedly connected to a sliding plate (5). The sliding plate (5) is slidably connected to a limit frame (6). The limit frame (6) is slidably connected to the conveying module (3). A first spring (13) is fixedly connected between the sliding plate (5) and the limit frame (6). Symmetrically distributed support frames (7) are all fixed to the sliding plate (5). The support frames (7) are slidably connected to a rotating frame (8), and the rotating frame (8) is rotatably connected to a positioning wheel (9). The sliding frame (10) is slidably connected to the upper side of the limiting frame (6); The second electric push rod (11) is fixed to the sliding frame (10), and the telescopic end of the second electric push rod (11) is provided with a pad (12). A transmission assembly is disposed on the second electric push rod (11), and the transmission assembly is used to drive the pad (12) to move; The support frame (7) is provided with a limiting surface (14), which is used to limit the rotation of the positioning wheel (9). A rough surface is provided between the support frame (7) and the rotating frame (8), which is used to increase the resistance when the support frame (7) and the rotating frame (8) move relative to each other. The rotating frame (8) is provided with symmetrically distributed protrusions (15), and the limiting frame (6) is provided with a stepped surface. The stepped surface in the limiting frame (6) is used to limit the position of the protrusions (15). The transmission assembly includes: a lifting frame (16), slidably connected to the telescopic end of the second electric push rod (11), the lifting frame (16) being rotatably connected to a rotating rod (17), the rotating rod (17) being fixedly connected to the pad (12), the sliding frame (10) being provided with a guide frame, and the rotating rod (17) sliding within the guide frame of the sliding frame (10); an extrusion frame (18), slidably connected to the pad (12), the extrusion frame (18) being fixedly connected to equidistantly distributed friction strips (19), the pad (12) having the same number of through slots as the friction strips (19), and the friction strips (19) passing through the corresponding through slots on the pad (12); and an adjustment assembly, disposed on the extrusion frame (18), used to separate the friction strips (19) from the fastening band. The adjustment assembly includes: a movable frame (20) fixedly connected to the extrusion frame (18), the movable frame (20) being slidably connected to the pad (12), and a second spring (21) being provided between the movable frame (20) and the pad (12); a guide bar (23) fixedly connected to the extrusion frame (18), and an inclined surface being provided on the pad (12), the inclined surface on the pad (12) being used to guide the guide bar (23) to move; The telescopic end of the second electric push rod (11) is fixed with a pressing plate (24). The pressing plate (24) and the moving frame (20) are both provided with inclined surfaces on opposite sides. The inclined surfaces on the pressing plate (24) are used to push the moving frame (20) to move.

2. A winding device for fastening straps of a new energy vehicle power battery pack according to claim 1, characterized in that, The height of the through groove on the pad (12) is greater than the thickness of the friction strip (19). The upper side of the through groove on the pad (12) is an inclined surface, which is used to guide the movement of the friction strip (19).

3. A winding device for fastening straps of a new energy vehicle power battery pack according to claim 2, characterized in that, The pad (12) is provided with a limiting strip (25), which is used to limit the position of the pad (12) and the extrusion frame (18). The limiting strip (25) is provided with an inclined surface to guide the movement of the extrusion frame (18).

4. A winding device for fastening straps of a new energy vehicle power battery pack according to claim 3, characterized in that, It also includes: A rotating assembly, disposed on the sliding frame (10), is used to drive the pad (12) to swing during the separation of the pad (12) from the fastening belt. The rotating assembly includes: Symmetrically distributed limiting posts (26) are all fixed to the extrusion frame (18). The sliding frame (10) is provided with the same number of limiting grooves as the limiting posts (26). The limiting grooves on the sliding frame (10) are used to limit the position of the limiting posts (26). The limiting disk (27) is fixed to the rotating rod (17), and the limiting disk (27) is provided with symmetrically distributed protrusions; There are multiple vibrating blocks (28), all of which are fixed in the guide frame on the sliding frame (10). The vibrating blocks (28) cause the limiting plate (27) to swing back and forth by squeezing the protrusions on the limiting plate (27).

5. A winding device for fastening straps of a new energy vehicle power battery pack according to claim 4, characterized in that, The vertical distance between two adjacent vibrating blocks (28) in the same column gradually increases from bottom to top.

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