Automatic glue encapsulation device for battery core

Abstract

An embodiment of the present invention provides an automatic adhesive wrapping device for battery cells, comprising an unwinding mechanism, a tension adjustment mechanism, a belt pulling mechanism and a shearing mechanism which are sequentially arranged along the conveying direction of the tape; the tension adjustment mechanism comprises a tension roller and at least two guide rollers, the tension roller and the guide roller having roller surfaces for overlapping the tape, the tension roller being arranged between two of the guide rollers, one end of the tension roller being connected to a directional adjustment mechanism, the directional adjustment mechanism being used to control the movement of the tension roller along a preset direction, so as to adjust the tension of the tape; the present invention can adjust the tension of the tape based on the directional adjustment mechanism, thereby facilitating subsequent shearing operations on the tape and ensuring the normal progress of the entire adhesive wrapping process of the battery cells.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing, and in particular to an automatic glue encapsulation device for a battery core. Background Art

[0002] The cell is the most important component of the battery. The cell can only be assembled into a battery after it has been processed in sequence through mechanical / ultrasonic flattening, encapsulation, shelling, collector plate welding, etc. Therefore, the performance of the cell has a direct impact on the performance of the battery, and the cell preparation process before battery assembly is very important.

[0003] There are many types of battery cell structures, one of which is a structure that is alternately wrapped with several diaphragms and aluminum films, with two clicks installed at one end of the wrapped soft package, and then surrounded by aluminum sheets. Since the outer wall of the battery cell and the inner wall of the battery shell have very precise assembly dimensions, the battery cell is easily scratched by the battery shell if it is directly put into the shell after being flattened; at the same time, when the exposed battery cell is directly put into the shell, the aluminum sheet on the outside of the battery cell contacts the battery shell, which can easily cause a short circuit. For this reason, it is usually necessary to wrap a layer of insulating glue on the outer wall of the flattened battery cell.

[0004] At present, when encapsulating battery cells, manual encapsulation or encapsulation by an encapsulation machine is generally used. Among them, manual encapsulation has low efficiency and poor quality, and cannot meet the needs of automated battery assembly and production. In order to solve the technical problems of low efficiency and poor quality of manual encapsulation, an encapsulation machine is proposed. After unwinding the tape roll, the encapsulation machine automatically guides the unwound tape and conveys it to the shearing mechanism. After the shearing mechanism cuts the tape, the end of the battery cell is directly encapsulated with glue. However, in actual operation, since the encapsulation machine cannot stably adjust the tension of the unwound tape, it directly affects the subsequent cutting operation of the tape, thereby having a greater impact on the entire encapsulation process of the battery cell. Summary of the invention

[0005] The embodiment of the present invention provides an automatic glue coating device for battery cells, which is used to solve the problem that the existing glue coating machine cannot stably adjust the tension of the unrolled adhesive tape, resulting in a significant impact on the entire glue coating process of the battery cells.

[0006] An embodiment of the present invention provides an automatic adhesive wrapping device for battery cells, comprising an unwinding mechanism, a tension adjustment mechanism, a belt pulling mechanism and a shearing mechanism which are sequentially arranged along the conveying direction of the tape; the tension adjustment mechanism comprises a tension roller and at least two guide rollers, the tension roller and the guide roller having roller surfaces for overlapping the tape, the tension roller is arranged between two of the guide rollers, one end of the tension roller is connected to a directional adjustment mechanism, and the directional adjustment mechanism is used to control the tension roller to move along a preset direction so as to adjust the tension of the tape.

[0007] According to an automatic battery cell encapsulation device according to one embodiment of the present invention, the directional adjustment mechanism includes a vertical guide rail, a slide and a counterweight block, the slide is slidably installed on the vertical guide rail, one end of the tension roller is connected to the slide, and the counterweight block is installed on the slide.

[0008] According to an automatic cell encapsulation device according to one embodiment of the present invention, the unwinding mechanism includes a rotating drive member and a tensioning disk, the output end of the rotating drive member is connected to the tensioning disk, and the tensioning disk is used to set the tape roll so as to unwind the tape roll under the drive of the rotating drive member.

[0009] According to the automatic core encapsulation device of one embodiment of the present invention, the tensioning disk includes a supporting disk body and a radial adjusting member, wherein the radial adjusting member includes a plurality of members and is circumferentially mounted on the side wall of the supporting disk body.

[0010] According to an automatic cell encapsulation device according to one embodiment of the present invention, the radial adjustment member includes an adjustment support, an elastic pressing plate and an elastic support, the end face of the elastic pressing plate faces the side wall of the support disc body, one end of the elastic support is connected to the side wall of the support disc body, and the other end is radially connected to the end face of the elastic pressing plate, one end of the elastic pressing plate is connected to the adjustment support, and the adjustment support is used to adjust the opening angle of the elastic pressing plate relative to the central axis of the support disc body.

[0011] According to an automatic cell encapsulation device according to an embodiment of the present invention, the tape pulling mechanism includes a tape positioning unit and a tape pulling unit, and the tape positioning unit and the tape pulling unit are used to be arranged in sequence along the conveying direction of the tape.

[0012] According to an automatic cell encapsulation device according to one embodiment of the present invention, the tape positioning unit includes a first clamping cylinder and two tape fixing claws, the output end of the first clamping cylinder is connected to one end of the two tape fixing claws, and the other ends of the two tape fixing claws are each provided with a first clamping structure.

[0013] According to an automatic cell encapsulation device according to one embodiment of the present invention, the tape pulling unit includes a first linear module, a second clamping cylinder and two tape pulling claws. The slide of the first linear module is used to move along the conveying direction of the tape. The second clamping cylinder is installed on the slide of the first linear module. The output end of the second clamping cylinder is connected to one end of the two tape pulling claws, and the other end of the two tape pulling claws is provided with a second clamping structure.

[0014] According to an automatic cell encapsulation device according to one embodiment of the present invention, the shearing mechanism is arranged on a side close to the tape positioning unit, and the shearing mechanism includes a second linear module and a cutter, the cutter is connected to a slide of the second linear module, and the blade of the cutter is used to extend to the back side of the tape, wherein the blade of the cutter is a continuous bevel blade, and the bevel blade is concave inwardly in an arc shape; or, the blade of the cutter is a serrated blade, and the serrated blade is in a straight line shape.

[0015] According to an embodiment of the present invention, the automatic battery cell encapsulation device further includes: a flexible pressing mechanism, which includes a flexible pressing block connected to the slide of the second linear module, and the flexible pressing block has a pressing surface for flexibly pressing the back of the tape.

[0016] An embodiment of the present invention provides an automatic glue wrapping device for battery cells. In the process of unwinding, tension adjusting, pulling and shearing the tape in sequence, a tension adjusting mechanism is provided to adjust the tension of the unwound tape. In the process of the tension roller and the guide roller transmitting and guiding the tape, the directional adjustment mechanism can control the tension roller to move along a preset direction. The position of the tension roller relative to the two adjacent guide rollers can be adjusted. When the tension on the tape and the force applied to the tension roller by the directional adjustment mechanism are balanced, the tape will be adjusted from a relaxed state or an over-tensioned state to a tensioned state required for the glue wrapping process. Therefore, the tension of the tape can be adjusted based on the directional adjustment mechanism, which is convenient for subsequent shearing operations on the tape and ensures the normal progress of the entire glue wrapping process of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of an automatic glue encapsulation device for a battery cell provided by an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the main structure of the automatic cell encapsulation device for encapsulating a cell shown in an embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of an unwinding mechanism shown in an embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of a tensioning disk shown in an embodiment of the present invention from a first viewing angle;

[0022] Figure 5 is a schematic structural diagram of a tensioning disk shown in an embodiment of the present invention from a second viewing angle;

[0023] Figure 6 is a structural schematic diagram of a directional adjustment mechanism shown in an embodiment of the present invention;

[0024] Figure 7 is a schematic structural diagram of a tape cutting device shown in an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of the main structure of two adhesive tape fixing claws cooperating with each other shown in an embodiment of the present invention;

[0026] Fig. 9 is a schematic structural diagram of a single tape fixing claw shown in an embodiment of the present invention;

[0027] Fig.10 It is a schematic diagram of a three-dimensional structure of two strap clamps cooperating with each other as shown in an embodiment of the present invention;

[0028] Fig.11 is a schematic cross-sectional structure diagram of a single strap clamp shown in an embodiment of the present invention;

[0029] Fig.12 is a schematic diagram of a first structure of a cutter shown in an embodiment of the present invention;

[0030] Fig.13 1 is a second structural schematic diagram of the cutter shown in the embodiment of the present invention.

[0031] In the figure, 1, frame; 2, unwinding mechanism; 21, rotating drive member; 211, stepping motor; 212, reducer; 22, tensioning disk; 221, supporting disk body; 222, adjusting support; 223, elastic pressing sheet; 224, elastic support; 3, tension adjusting mechanism; 31, first guide roller; 32, second guide roller; 33, tension roller; 34, third guide roller; 35, fourth guide roller; 4, tape positioning unit; 41, first clamping cylinder; 42, tape fixed claw; 43, first clamping structure; 5 , tape holding unit; 51, first linear module; 52, second clamping cylinder; 53, tape pulling claw; 54, second clamping structure; 6, flexible pressing mechanism; 61, flexible pressure block; 62, adapter frame; 7, shearing mechanism; 71, second linear module; 72, cutter; 73, tool holder; 8, directional adjustment mechanism; 81, vertical guide rail; 82, slide seat; 83, counterweight block; 84, limit block; 85, sensor plate; 86, first proximity switch; 87, second proximity switch; 9, tape roll; 10, tape. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] See also Figure 1 and Figure 2 The present embodiment provides an automatic glue encapsulation device for a battery cell, comprising: an unwinding mechanism 2, the unwinding mechanism 2 comprising a rotating driving member 21 and a tensioning disk 22, the output end of the rotating driving member 21 being connected to the tensioning disk 22, the tensioning disk 22 being used to set a tape roll 9; a tension adjusting mechanism 3, the tension adjusting mechanism 3 being used to adjust the tension of the unwound tape 10 on the tape roll 9, and being used to guide the tension-adjusted tape 10 to the tape drawing mechanism; a tape drawing mechanism, the tape drawing mechanism comprising a tape positioning unit 4 and a tape holding unit 5, the tape positioning unit 4 and the tape holding unit 5 being used to be arranged in sequence along the conveying direction of the tape 10; a flexible pressing mechanism 6, the flexible pressing mechanism 6 being arranged on one side of the tape drawing mechanism, and having a pressing surface for flexibly pressing the back side of the tape 10; a shearing mechanism 7, the shearing mechanism 7 being arranged close to the tape positioning unit 4, and being used to shear the tape 10.

[0035] like Figure 2As shown, the automatic cell encapsulation device shown in this embodiment can be adapted to stably unwind tape rolls 9 of different specifications by arranging a tensioning disk 22 on the unwinding mechanism 2 when encapsulating the cell. After the unwinding tape 10 on the tape roll 9 passes through the tension adjusting mechanism 3, the tension of the tape 10 can be adjusted by the tension adjusting mechanism 3, so that the tape 10 can be stably conveyed to the drawing mechanism. After the tape 10 is pulled into place by the tape holding unit 5 of the drawing mechanism, the tape positioning unit 4 can immediately position the tape 10 so as to cut the tensioned tape 10, and the flexible pressing mechanism 6 applies a flexible pressing force to the back of the tape 10 so as to ensure that the adhesive surface of the tape 10 is reliably attached to the surface of the cell without damaging the tape 10 and the cell, so that the encapsulation operation on the end of the cell can be better completed by controlling the rotation of the cell, thereby ensuring both the stability of the encapsulation operation and the encapsulation effect.

[0036] It should be pointed out here that when the battery cell is encapsulated with rubber, a battery cell lifting mechanism and a battery cell rotating mechanism are usually configured. The battery cell lifting mechanism is installed below the pulling mechanism and is located directly below the shearing mechanism 7. The battery cell rotating mechanism and the battery cell lifting mechanism are arranged opposite to each other, so that the battery cell is lifted to a predetermined height by the battery cell lifting mechanism, so that when the tape 10 is cut, the tape 10 is attached to the surface of the battery cell, and the battery cell is driven by the battery cell rotating mechanism to rotate 360° on the battery cell lifting mechanism, thereby completing the encapsulation of the battery cell.

[0037] like Figure 3 As shown, in this embodiment, the tensioning disk 22 includes a supporting disk body 221 and a radial adjusting member. The radial adjusting member includes a plurality of radial adjusting members and is circumferentially mounted on the side wall of the supporting disk body 221 .

[0038] Specifically, the present embodiment can adjust the tensioning diameter of the tensioning disk 22 by cooperating with a plurality of radial adjustment parts, so that the tensioning disk 22 can fix the tape rolls 9 of different specifications, and when the rotating driving part 21 drives the tensioning disk 22 to rotate, the tape roll 9 can be controlled to be unwound stably to prevent the tape roll 9 from falling off the tensioning disk 22.

[0039] The rotary drive member 21 shown in this embodiment includes a stepper motor 211 and a reducer 212, the output end of the stepper motor 211 is connected to the input end of the reducer 212, the output end of the reducer 212 is connected to one end of the rotating shaft through a coupling, the rotating shaft is rotatably mounted on the frame 1, and the other end of the rotating shaft is coaxially connected to the supporting disc body 221 of the tensioning disc 22. At the same time, the radial adjustment members shown in this embodiment can be specifically provided with three, and the three radial adjustment members can be evenly installed on the side wall of the supporting disc body 221 along the circumferential direction.

[0040] like Figure 4 and Figure 5As shown, the radial adjustment member in this embodiment includes an adjustment support 222 and an elastic pressing plate 223, the end face of the elastic pressing plate 223 faces the side wall of the support plate body 221, one end of the elastic pressing plate 223 is connected to the adjustment support 222, and the adjustment support 222 is used to adjust the opening angle of the elastic pressing plate 223 relative to the central axis of the support plate body 221.

[0041] It should be pointed out here that when adjusting the opening angle of each elastic pressing piece 223 by adjusting the support 222 , the opening angle of each elastic pressing piece 223 relative to the central axis of the support plate body 221 should be kept consistent so as to fix the tape roll 9 .

[0042] Furthermore, in this embodiment, the radial adjustment member further includes an elastic support 224, a groove is formed on the side wall of the support disc body 221, one end of the elastic support 224 is connected to the groove bottom of the groove, and the other end of the elastic support 224 is radially connected to the end surface of the elastic pressing piece 223. In this way, by arranging the elastic support 224 between the elastic pressing piece 223 and the side wall of the support disc body 221, the adjustment margin of the opening angle of the elastic pressing piece 223 can be further enhanced, ensuring that the elastic pressing piece 223 is stably maintained at the corresponding opening angle.

[0043] Preferably, in this embodiment, the elastic support 224 includes at least one of a spring, an elastic rod, and an elastic sheet. Figure 4 and Figure 5 As shown, the elastic support 224 shown in this embodiment is preferably a spring.

[0044] like Figure 5 As shown, in a further preferred embodiment, the elastic pressing piece 223 is strip-shaped and includes a tensioning section and a guiding section, one end of the tensioning section is connected to the adjustment support 222, the other end of the tensioning section is connected to one end of the guiding section, and the other end of the guiding section is used to extend obliquely toward the center of the support disc 221. Here, by designing the elastic pressing piece 223 as a tensioning section and a guiding section, it is convenient to fit the tape roll 9 on the tensioning section of each elastic pressing piece 223 under the guidance of the guiding section, so that under the support of the support disc 221, the tensioning section of each elastic pressing piece 223 provides radial tensioning force to the tape roll 9, thereby realizing adaptive fixation of the tape roll 9.

[0045] like Figure 4As shown, in this embodiment, the adjustment support 222 includes a seat body, an adjustment shaft and an adjustment block. The seat body is mounted on the end surface of the support disc body 221 on the side close to the rotating drive member 21, the adjustment shaft is mounted on the seat body, one end of the adjustment block is connected to the adjustment shaft, and the other end is connected to one end of the elastic pressing piece 223. Therefore, when adjusting the rotation angle of the adjustment shaft in the seat body, the adjustment block can be adaptively deflected to a corresponding angle as the adjustment shaft rotates. Since the end of the adjustment block away from the adjustment shaft is connected to one end of the elastic pressing piece 223, the opening angle of the elastic pressing piece 223 relative to the central axis of the support disc body 221 can be adjusted.

[0046] like Figure 1 As shown, the tension adjustment mechanism 3 in this embodiment includes a tension roller 33 and at least two guide rollers, the tension roller 33 is arranged between two of the guide rollers, one end of the tension roller 33 is connected to the directional adjustment mechanism 8, the directional adjustment mechanism 8 is used to control the tension roller 33 to move along a preset direction, so as to adjust the tension of the tape 10, wherein the moving direction of the tension roller 33 shown in this embodiment driven by the directional adjustment mechanism 8 can be either a vertical straight line direction or an inclined straight line direction, which is not specifically limited here.

[0047] Specifically, the guide rollers shown in this embodiment include a first guide roller 31, a second guide roller 32, a third guide roller 34 and a fourth guide roller 35, wherein the first guide roller 31, the second guide roller 32 and the third guide roller 34 are horizontally arranged in a straight line, and the fourth guide roller 35 is located directly below the third guide roller 34. The tension roller 33 shown in this embodiment is arranged between the second guide roller 32 and the third guide roller 34, and the directional adjustment mechanism 8 is used to control the movement of the tension roller 33 along the vertical direction, and the position of the tension roller 33 relative to the second guide roller 32 and the third guide roller 34 can be adjusted. When the tension on the adhesive tape 10 and the force applied to the tension roller 33 by the directional adjustment mechanism 8 reach a balance, the adhesive tape 10 will be adjusted from a relaxed state or an over-tensioned state to a tensioned state required for the encapsulation process, thereby achieving adjustment of the tension of the adhesive tape 10. Correspondingly, the adhesive tape 10 unwound from the adhesive tape roll 9 is conveyed to the adhesive tape positioning unit 4 after passing through the first guide roller 31 , the second guide roller 32 , the tension roller 33 , the third guide roller 34 and the fourth guide roller 35 in sequence.

[0048] like Figure 6 As shown, in a further preferred embodiment, the directional adjustment mechanism 8 includes a vertical guide rail 81, a slide 82 and a counterweight 83. The slide 82 is slidably installed on the vertical guide rail 81. One end of the tension roller 33 is connected to the slide 82 after passing through a vertically arranged strip hole on the frame 1. The counterweight 83 is installed on the slide 82. The slide 82 shown in this embodiment is provided with a vertically arranged plug rod, and multiple counterweights 83 can be inserted on the plug rod.

[0049] Specifically, in actual use, the sliding matching structure of the slide 82 and the vertical guide rail 81 can better guide the tension roller 33 to move up and down in the vertical direction. When the tension from the tape 10 exerted on the tension roller 33 is balanced with the load force added by the counterweight block 83, the tension roller 33 will maintain a balanced state. Therefore, this embodiment can control the size of the additional counterweight to meet different tension adjustment requirements for the tape 10.

[0050] like Figure 6 As shown, in order to ensure that the tension roller 33 can reliably perform lifting and lowering movements, limit blocks 84 are respectively provided at the upper and lower ends of the vertical guide rail 81 in this embodiment.

[0051] At the same time, in order to further monitor and warn the extreme position of the movement of the tension roller 33, the present embodiment can install a sensing sheet 85 on the slide 82, and correspondingly set a first proximity switch 86 and a second proximity switch 87 at the upper and lower ends of the vertical guide rail 81, wherein the detection ends of the first proximity switch 86 and the second proximity switch 87 respectively correspond to the sensing sheet 85.

[0052] like Figure 7 As shown, this embodiment provides a schematic diagram of the structure of a tape cutting device, which includes the tape pulling mechanism, the flexible pressing mechanism 6 and the cutting mechanism 7 shown in the above embodiment. When cutting the tape 10, the tape pulling unit 5 corresponding to the tape pulling mechanism moves to the tape positioning unit 4. After the tape positioning unit 4 releases the positioning of the unrolled tape 10, the tape pulling unit 5 pulls the free end of the tape 10. When the tape 10 is pulled into place, the tape positioning unit 4 positions the tape 10 again so that the cutting mechanism 7 can cut the tape 10, ensuring that the cut tape 10 adheres to the surface of the battery cell and the battery cell is coated with glue. In the process of cutting the tape 10, the flexible pressing mechanism 6 also applies a flexible pressing force to the back of the tape 10 to ensure that the adhesive surface of the tape 10 is reliably attached to the surface of the pre-coated battery cell.

[0053] like Figures 7 and 8 As shown, in this embodiment, the tape positioning unit 4 includes a first clamping cylinder 41 and two tape fixing claws 42. The output end of the first clamping cylinder 41 is connected to one end of the two tape fixing claws 42. The other ends of the two tape fixing claws 42 are each provided with a first clamping structure 43 to clamp the tape 10, so that the two tape fixing claws 42 can be controlled by the first clamping cylinder 41 to perform opening and clamping actions.

[0054] like Fig. 9As shown, in order to prevent the two tape fixing claws 42 from damaging the tape 10 during the clamping process, the first clamping structure 43 shown in this embodiment is a clamping plane, and a plurality of sunken grooves are formed on the clamping plane. Here, by providing the sunken grooves on the clamping plane, it is ensured that sufficient friction is maintained between the clamping planes of the two tape fixing claws 42 and the tape 10, and the tape 10 will not be damaged during clamping, thereby achieving better positioning and clamping of the tape 10.

[0055] In one of the preferred embodiments, the sinking grooves may be further arranged in an array on the clamping plane.

[0056] like Figure 7 As shown, the tape pulling unit 5 shown in this embodiment includes a first linear module 51, a second clamping cylinder 52 and two tape pulling claws 53. The slide of the first linear module 51 is used to move along the conveying direction of the tape 10. The second clamping cylinder 52 is installed on the slide of the first linear module 51. The output end of the second clamping cylinder 52 is connected to one end of the two tape pulling claws 53. The other ends of the two tape pulling claws 53 are each provided with a second clamping structure 54 to clamp the tape 10.

[0057] Specifically, the clamping ends of the two tape clamping jaws 53 shown in this embodiment are horizontally opposite to the clamping ends of the two tape fixed jaws 42. When the tape 10 is pulled, the slide of the first linear module 51 moves toward the tape positioning unit 4, so that the two tape clamping jaws 53 move toward the two tape fixed jaws 42 accordingly. When moving into position, the second clamping cylinder 52 drives the two tape clamping jaws 53 to perform a clamping action to clamp the free end of the tape 10. Then, the slide of the first linear module 51 moves in the opposite direction to move away from the tape positioning unit 4, so that the two tape clamping jaws 53 can clamp the free end of the tape 10 to move a corresponding distance.

[0058] like Fig.10 and Fig.11 As shown, in order to ensure that the clamping ends of the two strap clamps 53 can reliably clamp the tape 10 and prevent the tape 10 from falling off during the process of pulling the tape 10, the second clamping structure 54 on the two strap clamps 53 shown in this embodiment is a clamping curved surface, and a plurality of protrusions and a plurality of recesses are formed on the clamping curved surface, and the corresponding protrusions and recesses on the clamping curved surfaces of the two strap clamps 53 correspond to each other.

[0059] Among them, the raised portions shown in this embodiment are in the shape of long strips and are arranged side by side, and the arrangement direction of each raised portion is perpendicular to the conveying direction of the tape 10, and a recessed portion is formed between two adjacent raised portions, and the cross-sectional shapes of the raised portions and the recessed portions can both be isosceles trapezoids.

[0060] like Figure 7As shown, in this embodiment, the shearing mechanism 7 includes a second linear module 71 and a cutter 72, the cutter 72 is connected to the slide of the second linear module 71, and the blade of the cutter 72 is used to extend to the back side of the tape 10, wherein the adhesive surface of the tape 10 is arranged downward and the back side of the tape 10 is arranged upward.

[0061] Specifically, the moving direction of the slide on the second linear module 71 shown in this embodiment is the vertical direction, and a tool holder 73 is installed on the slide of the second linear module 71, and a cutter 72 is installed on the tool holder 73, so that the cutter 72 is driven up and down by the second linear module 71 to achieve effective cutting of the tape 10.

[0062] like Fig.12 As shown, the cutter 72 shown in this embodiment can be a surgical knife, and the blade of the cutter 72 is a continuous bevel blade, and the bevel blade is concave in an arc shape. Therefore, when cutting the tape 10, one end of the bevel blade first cuts the edge of the tape 10, and as the cutter 72 moves vertically downward, the bevel blade gradually contacts the tape 10 and cuts the tape 10.

[0063] like Fig.13 As shown, the cutting edge of the cutter 72 shown in this embodiment is a serrated cutting edge, and the serrated cutting edge is in a straight line. Therefore, when the adhesive tape 10 is cut, the serrated cutting edge first directly contacts the back side of the adhesive tape 10, and as the cutter 72 moves vertically downward, the serrated cutting edge cuts the adhesive tape 10 at one time.

[0064] like Figure 7 As shown, the flexible pressing mechanism 6 shown in this embodiment includes a flexible pressing block 61 , and the flexible pressing block 61 is connected to the slide table of the second linear module 71 .

[0065] Specifically, the slide of the second linear module 71 shown in this embodiment is also connected to one end of the adapter frame 62, and the other end of the adapter frame 62 is fixed with the flexible pressure block 61, wherein the adapter frame 62 can be L-shaped, and the flexible pressure block 61 is fixed to the horizontal edge of the adapter frame 62, and the flexible pressure block 61 can be made of sponge.

[0066] Since the cutter 72 and the flexible pressing block 61 are fixed together on the slide of the second linear module 71, the cutter 72 and the flexible pressing block 61 will rise or fall synchronously under the drive of the slide of the second linear module 71, so that while cutting the tape 10, the flexible pressing block 61 can also apply a flexible pressing force to the back of the tape 10, so that the adhesive surface of the tape 10 can be reliably attached to the surface of the pre-coated battery cell, so that when the rotation of the battery cell is controlled, the encapsulation operation of the battery cell end can be better completed.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic adhesive coating device for battery cells, comprising an unwinding mechanism, a tension adjustment mechanism, a belt pulling mechanism and a shearing mechanism sequentially arranged along the conveying direction of the adhesive tape; characterized in that: The tension adjustment mechanism includes a tension roller and at least two guide rollers, the tension roller and the guide roller have roller surfaces for overlapping the adhesive tape, the tension roller is arranged between two of the guide rollers, one end of the tension roller is connected to a directional adjustment mechanism, and the directional adjustment mechanism is used to control the tension roller to move along a preset direction, so as to adjust the tension of the adhesive tape; The unwinding mechanism is provided with a tensioning disk, which includes a supporting disk body and a radial adjusting member, wherein the radial adjusting member includes a plurality of members and is circumferentially mounted on the side wall of the supporting disk body; The radial adjustment member comprises an adjustment support, an elastic pressing sheet and an elastic support, the end surface of the elastic pressing sheet faces the side wall of the support disc body, one end of the elastic support is connected to the side wall of the support disc body, and the other end is radially connected to the end surface of the elastic pressing sheet, one end of the elastic pressing sheet is connected to the adjustment support, and the adjustment support is used to adjust the opening angle of the elastic pressing sheet relative to the central axis of the support disc body; Wherein, a groove is formed on the side wall of the support disc body, one end of the elastic support is connected to the bottom of the groove, and the other end of the elastic support is radially connected to the end surface of the elastic pressing sheet; The elastic pressing piece is in a strip shape, and includes a tensioning section and a guiding section, one end of the tensioning section is connected to the adjusting support, the other end of the tensioning section is connected to one end of the guiding section, and the other end of the guiding section is used to extend obliquely toward the center of the supporting disc body; The adjustment support includes a seat body, an adjustment shaft and an adjustment block. The seat body is installed on the supporting disc body, the adjustment shaft is installed on the seat body, one end of the adjustment block is connected to the adjustment shaft, and the other end is connected to one end of the elastic pressing piece.

2. The automatic glue encapsulation device for battery cells according to claim 1, characterized in that: The directional adjustment mechanism comprises a vertical guide rail, a slide seat and a counterweight block. The slide seat is slidably mounted on the vertical guide rail. One end of the tension roller is connected to the slide seat, and the counterweight block is mounted on the slide seat.

3. The automatic encapsulation device for battery cells according to claim 1, characterized in that: The unwinding mechanism further comprises a rotary driving member, an output end of which is connected to the tensioning disk, and the tensioning disk is used for sleeved with a tape roll so as to unwind the tape roll under the drive of the rotary driving member.

4. The automatic battery core encapsulation device according to claim 1, characterized in that: The tape pulling mechanism comprises a tape positioning unit and a tape pulling unit, and the tape positioning unit and the tape pulling unit are used to be arranged in sequence along the conveying direction of the tape.

5. The automatic glue encapsulation device for battery cells according to claim 4, characterized in that: The tape positioning unit comprises a first clamping cylinder and two tape fixing claws, wherein the output end of the first clamping cylinder is connected to one end of the two tape fixing claws, and the other ends of the two tape fixing claws are each provided with a first clamping structure.

6. The automatic battery core encapsulation device according to claim 4, characterized in that: The tape pulling unit includes a first linear module, a second clamping cylinder and two tape pulling claws. The slide of the first linear module is used to move along the conveying direction of the tape. The second clamping cylinder is installed on the slide of the first linear module. The output end of the second clamping cylinder is connected to one end of the two tape pulling claws, and the other ends of the two tape pulling claws are provided with a second clamping structure.

7. The automatic battery core encapsulation device according to claim 4, characterized in that: The shearing mechanism is arranged on a side close to the tape positioning unit, and includes a second linear module and a cutter, wherein the cutter is connected to the slide of the second linear module, and the blade of the cutter is used to extend to the back side of the tape, wherein the blade of the cutter is a continuous bevel blade, and the bevel blade is concave in an arc shape; or, the blade of the cutter is a serrated blade, and the serrated blade is in a straight line shape.

8. The automatic glue encapsulation device for battery cells according to claim 7, characterized in that: Also includes: A flexible pressing mechanism includes a flexible pressing block, the flexible pressing block is connected to the slide table of the second linear module, and the flexible pressing block has a pressing surface for flexibly pressing the back side of the tape.

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