A battery heat shrink packaging device

Abstract

The present invention provides a battery heat shrink packaging device, comprising a first battery conveying device, a film wrapping device, and a second battery conveying device, which are sequentially connected along the battery conveying direction; the film wrapping device comprises two symmetrically arranged pressure plates, which enclose a battery conveying passageway; each pressure plate has an end surface facing the first battery conveying device formed as a heat shrink film guiding slope; the heat shrink film enters the battery conveying passageway while maintaining its film surface perpendicular to the surface of the first conveyor belt, and is acted upon by the heat shrink film guiding slope to wrap the battery collection within the battery conveying passageway; the heat shrink film is provided with a plurality of tear lines spaced along its length; a section of the heat shrink film between two adjacent tear lines serves as a heat shrink film unit corresponding to the battery collection; and the second battery conveying device is arranged through a heating passageway. The present invention eliminates the risk of a cutter damaging the battery and can also achieve the advantages of heat shrink packaging of battery collections of various qualities.

Description

Technical Field

[0001] The present invention relates to the field of battery packaging, and in particular to a battery heat shrink packaging device. Background Art

[0002] Heat shrink film is a thin film that shrinks when exposed to heat. Because it can be tightly wrapped around products after shrinking, it is widely used in the packaging of various beverages and daily necessities. Heat shrink film packaging products are highly sought after in the modern packaging industry due to their flexibility, strong impact and tear resistance, resistance to damage, moisture resistance, and high transparency.

[0003] Battery assembly packaging varies widely. When heat shrink film is used for assembly, shrink packaging equipment must be capable of handling a wide variety of battery assemblies. Because different battery assemblies correspond to different battery models or quantities, the lengths of these assemblies vary. Existing shrink packaging equipment and processes (e.g., CN111038812B) utilize a double-layer film structure. The double-layer film must first be opened by vacuuming, and the battery assembly is then placed within the opened double-layer film. The battery assembly is then pressed against the film and cut with cutters engaging up and down at the front and back of the assembly, resulting in a length of shrink film that meets the required length. Finally, the shrink film containing the battery assembly is placed within a heating channel, where it shrinks around the assembly to form a package. However, existing shrink packaging equipment is not only bulky and complex to assemble, but also carries the risk of damaging the batteries when cutting the shrink film. Furthermore, these existing shrink packaging equipment can only shrink-wrap battery assemblies of a single type and cannot be switched to handle different types of battery assemblies. Summary of the Invention

[0004] The present invention aims to provide a battery heat shrink packaging device that can overcome the structural defects of the existing technology such as bulky structure and complex assembly, and does not have the quality risk of cutting the battery with a cutter. At the same time, it can also realize heat shrink packaging of a collection of batteries of various qualities, and has the advantage of one machine for multiple uses.

[0005] A battery heat shrink packaging device comprises a frame and a first battery conveying device, a film wrapping device and a second battery conveying device which are mounted on the frame and sequentially connected along a battery conveying direction;

[0006] The first battery conveying device includes a first conveyor belt, a plurality of battery assembly brackets mounted on the belt surface of the first conveyor belt and arranged in sequence along the battery conveying direction, and a plurality of battery assembly bracket translation mechanisms located on the side of the first conveyor belt and capable of driving each of the battery assembly brackets to translate in a direction perpendicular to the battery conveying direction;

[0007] A plurality of battery assemblies are sequentially arranged on the battery assembly bracket along the battery conveying direction and conveyed forward by the first conveyor belt;

[0008] The film wrapping device includes two pressing plates symmetrically arranged above and below, and the two pressing plates enclose a battery conveying passage connecting the battery conveying path of the first battery conveying device and the battery conveying path of the second battery conveying device;

[0009] One end surface of each pressing plate facing the first battery conveying device is a heat shrink film guiding inclined surface, and the heat shrink film guiding inclined surface starts from the outside of one side of the battery conveying aisle along the battery conveying direction, crosses the battery conveying aisle obliquely, and continues to extend obliquely to the outside of the other side of the battery conveying aisle, and the rear end of the heat shrink film guiding inclined surface in the conveying direction is the heat shrink film inlet;

[0010] The heat shrink film maintains a film surface perpendicular to the belt surface of the first conveyor belt and enters the battery conveying aisle through the heat shrink film inlet. The conveying direction of the heat shrink film is consistent with the conveying direction of the battery. The heat shrink film has a plurality of tear lines spaced apart along its length, and each tear line is composed of a plurality of holes evenly distributed along the width of the heat shrink film.

[0011] A section of the heat shrinkable film between two adjacent tear lines serves as a heat shrinkable film unit, and the heat shrinkable film units are arranged in a one-to-one correspondence with the battery assemblies;

[0012] A battery limiting baffle is provided on the other side of the battery conveying aisle;

[0013] The second battery conveying device includes two sets of second conveyor belts arranged opposite to each other in an upper and lower direction, and a battery clamping and conveying channel is formed between the two sets of second conveyor belts;

[0014] The rack is also provided with a heating channel, and the second battery conveying device is provided through the heating channel.

[0015] The battery heat shrink packaging equipment of the present invention forms a tear line on the heat shrink film by punching holes in the heat shrink film before wrapping the battery collection. A section of the heat shrink film between two adjacent tear lines serves as a heat shrink film unit. Each heat shrink film unit is arranged corresponding to a group of battery collections and is used to wrap the group of battery collections, so that the heat shrink film can be automatically separated along each tear line with the help of a heating channel, and there is no need for a cutter to cut the heat shrink film. Therefore, there is no risk of the cutter cutting the battery; and a continuous battery conveying path is formed between the first battery conveying device, the wrapping device and the second battery conveying device of the present invention, and cooperates with the special structure of the wrapping device to achieve that the heat shrink film can smoothly wrap the battery collection in the battery conveying state, and the battery collection bracket translation mechanism can drive the battery collection bracket to be promptly withdrawn from the heat shrink film. The structural design of the present invention is simple, the operation is smooth, and the production efficiency is high.

[0016] Preferably, a heat shrink film tensioning guide device is provided on one side of the heat shrink film inlet of the battery conveying aisle. The heat shrink film tensioning guide device includes a plurality of guide rollers and at least one tensioning roller vertically arranged above the frame and parallel to each other. The heat shrink film tensioning guide device, the heat shrink film inlet, and the heat shrink film conveying path of the battery conveying aisle are sequentially connected. The heat shrink film passes through each of the guide rollers and the tensioning rollers in sequence and then enters the battery conveying aisle from the heat shrink film inlet. In the battery conveying aisle, the middle portion of the heat shrink film first abuts against one end face of the battery assembly facing the heat shrink film tensioning guide device and is conveyed forward synchronously with the battery assembly. The upper and lower portions of the heat shrink film are respectively folded toward the battery assembly under the guidance of the two heat shrink film guide inclined surfaces until they completely cover the upper and lower surfaces of the battery assembly, thereby realizing automatic feeding of the heat shrink film and automatic wrapping of the battery assembly by the heat shrink film unit.

[0017] When a heat shrink film tensioning guide device is provided, the frame is further provided with a heat shrink film punching device, and the heat shrink film punching device and the heat shrink film conveying path of the heat shrink film tensioning guide device are sequentially connected. The heat shrink film punching device can punch holes in the heat shrink film, thereby forming the tear line consisting of holes. Furthermore, the heat shrink film punching device includes a dotted line tool and a dotted line tool pad arranged in opposite directions. The dotted line tool and the dotted line tool pad are both long and vertically arranged. The gap between the dotted line tool and the dotted line tool pad serves as a heat shrink film passage. The side surface of the dotted line tool facing the dotted line tool pad has a plurality of punching teeth evenly distributed along the width of the heat shrink film. The dotted line tool and the dotted line tool pad are respectively driven by corresponding transmission mechanisms to approach each other and engage when they are closest to each other to punch holes. The transmission mechanisms corresponding to the dotted line tool and the dotted line tool pad are respectively arranged above the frame. When the dot-line tool and the dot-line tool pad are engaged, each of the punching teeth on the dot-line tool can pierce the heat shrink film and "punch holes" in the heat shrink film. One engagement can form a group of holes (i.e., a tear line) on the heat shrink film. Furthermore, the transmission mechanism corresponding to the dot-line tool includes a first eccentric wheel and a first rotating shaft synchronously connected to the central axis of the first eccentric wheel, a first connecting seat is provided near the edge of the wheel disc of the first eccentric wheel, and the dot-line tool is fixed on the first connecting seat; the transmission mechanism corresponding to the dot-line tool pad includes a second eccentric wheel and a second rotating shaft synchronously connected to the central axis of the second eccentric wheel, a second connecting seat is provided near the edge of the wheel disc of the second eccentric wheel, and the dot-line tool pad is fixed on the second connecting seat, and either the first rotating shaft or the second rotating shaft is driven to rotate by a servo motor, and the first rotating shaft and the second rotating shaft are driven in reverse rotation. The heat shrink film punching device of the present invention can adjust the time difference between the two engagements of the dot-line tool and the dot-line tool pad (i.e., the time difference between the two "dot punchings") by simply adjusting the rotational speed of the first rotating shaft via a servo motor. Combined with adjusting the heat shrink film conveying speed (i.e., the conveying speed of the second battery conveying device), the length of the heat shrink film unit and the spacing between two adjacent tear lines can be adjusted according to the different quality of battery assemblies. This adapts to heat shrink film packaging of battery assemblies of different quality without requiring replacement of components of the heat shrink film punching device, thus saving manpower, material, and material costs. Preferably, a heat shrink film feed guide device is further provided on the frame on the feed side of the heat shrink film punching device. The heat shrink film feed guide device includes a plurality of feed guide rollers erected above the frame, the feed guide rollers being parallel to the guide rollers of the heat shrink film tensioning guide device.

[0018] Preferably, a heat shrink film sealing mechanism is provided in front of the film wrapping device in the conveying direction. The heat shrink film sealing mechanism is located on the side of the battery clamping and conveying channel facing away from the heat shrink film inlet. The heat shrink film sealing mechanism is capable of sealing the opening of the heat shrink film on the side facing away from the heat shrink film inlet during the forward conveyance of the battery and heat shrink film. The heat shrink film sealing mechanism may utilize a high-frequency welding knife.

[0019] Preferably, the heating channel is provided with a blowing hole for blowing hot air toward the interior of the heating channel. The heating channel is used for high-temperature blowing and shaping of the heat shrink film.

[0020] Preferably, a heater is provided behind the conveying direction of the heating channel for performing preliminary shaping of the heat shrink film.

[0021] Preferably, at least one of the two second conveyor belts is a sponge belt, and the pressure of the sponge belt is adjustable, so that the heat shrink film has space to shrink after being blown by the hot air from the heating channel.

[0022] Preferably, a third battery conveying device is connected to the front of the conveying direction of the second battery conveying device; a heating corridor for baking and shaping the surface of the heat shrink film is also provided on the frame; and the third battery conveying device is arranged through the heating corridor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 2 is a schematic diagram of the three-dimensional structure of the battery heat shrink packaging equipment of the present invention, wherein the direction indicated by the arrow is the conveying direction of the battery;

[0024] Figure 2 yes Figure 1 Enlarged view of part A;

[0025] Figure 3 yes Figure 1 The enlarged view of part B in the figure shows that the direction indicated by the arrow is the width direction of the heat shrink film;

[0026] Figure 4 is a schematic diagram of the positional relationship between the heat shrinkable film of the present invention and the guide roller of the heat shrinkable film tensioning guide device;

[0027] Figure 5 It is a structural schematic diagram of the transmission mechanism of the heat shrink film punching device of the present invention;

[0028] Figure 6 It is a schematic diagram of the heat shrink film conveying path of the present invention. Implementation Method

[0029] The specific embodiment of the heat shrink packaging device of the present invention is now described in detail with reference to the accompanying drawings:

[0030] Combine Figure 1 、 Figure 2 、 Figure 4 and Figure 6 A battery heat shrink packaging device includes a frame 10 and a first battery conveying device 20, a film wrapping device 30 and a second battery conveying device 40 installed on the frame 10 and sequentially connected along the battery conveying direction;

[0031] The first battery conveying device 20 includes a first conveyor belt (an existing conventional structure, not shown), a plurality of battery assembly brackets 21 mounted on the first conveyor belt and arranged in sequence along the battery conveying direction, and a plurality of battery assembly bracket translation mechanisms 22 located to the side of the first conveyor belt and capable of driving each of the battery assembly brackets 21 to translate in a direction perpendicular to the battery conveying direction;

[0032] A plurality of battery assemblies 400 are sequentially arranged on the battery assembly bracket 21 along the battery conveying direction and conveyed forward by the first conveyor belt;

[0033] The film wrapping device 30 includes two pressing plates (31, 32) symmetrically arranged in an upper and lower direction, and the two pressing plates (31, 32) enclose a battery conveying passage 33 connected between the battery conveying path of the first battery conveying device 20 and the battery conveying path of the second battery conveying device 40;

[0034] An end surface of each of the pressing plates (31, 32) facing the first battery conveying device 20 is a heat shrink film guide inclined surface (311, 321), and the heat shrink film guide inclined surface (311, 321) starts from one side of the battery conveying aisle 33 and crosses the battery conveying aisle 33 obliquely along the battery conveying direction and continues to extend obliquely to the other side of the battery conveying aisle 33, and the rear end of the heat shrink film guide inclined surface (311, 321) in the conveying direction is a heat shrink film inlet 300;

[0035] The heat shrink film 100 enters the battery conveying passage 33 through the heat shrink film inlet 300 while maintaining the film surface perpendicular to the first conveyor belt. The conveying direction of the heat shrink film 100 is consistent with the conveying direction of the battery. The heat shrink film 100 has several tear lines 200 spaced apart along its length. Each tear line 200 is composed of several holes evenly distributed along the width of the heat shrink film 100.

[0036] A section of the heat shrink film 100 between two adjacent tear lines 200 serves as a heat shrink film unit, and the heat shrink film unit is provided in a one-to-one correspondence with the battery assembly 400;

[0037] A battery limiting baffle 70 is provided on the other side of the battery conveying aisle 33;

[0038] The second battery conveying device 40 comprises two sets of second conveyor belts (41, 42) arranged opposite to each other in the upper and lower directions, and a battery clamping conveying channel 43 is formed between the two sets of second conveyor belt mechanisms (41, 42);

[0039] The rack 10 is further provided with a heating channel (the heating channel is surrounded by two heating devices 80 arranged opposite to each other), and the second battery conveying device 40 is arranged through the heating channel.

[0040] The battery heat shrink packaging device of the present invention does not have the risk of the cutter damaging the battery; moreover, the present invention has a simple structural design, smooth operation, and high production efficiency.

[0041] Preferably, combined Figure 1 and Figure 6 A heat shrink film tensioning guide device 60 is provided on one side of the heat shrink film inlet 300 of the battery conveying aisle 33. The heat shrink film tensioning guide device 60 includes several guide rollers 61 and at least one tensioning roller 62 vertically arranged above the frame 10 and parallel to each other; the heat shrink film tensioning guide device 60, the heat shrink film inlet 300 and the heat shrink film conveying path of the battery conveying aisle 33 are connected in sequence. The heat shrink film 100 passes through each of the guide rollers 61 and the tensioning roller 62 in turn and then enters the battery conveying aisle 33 through the heat shrink film inlet 300; in the battery conveying aisle 33, the middle part of the heat shrink film 100 first comes into close contact with the end face of the battery assembly 400 facing the heat shrink film tensioning guide device 60 and is conveyed forward synchronously with the battery assembly 400. The upper and lower parts of the heat shrink film 100 are respectively folded toward the side of the battery assembly 400 under the guidance of the two heat shrink film guide inclined surfaces (311, 321) until they are completely covered on the upper and lower surfaces of the battery assembly 400, thereby realizing the automatic feeding of the heat shrink film 100 and the automatic wrapping of the battery assembly 400 by the heat shrink film unit.

[0042] like Figure 4 As shown, the width direction of the heat shrinkable film 100 of the present invention is consistent with the axial direction of the guide roller 61 of the heat shrinkable film tensioning guide device 60.

[0043] When the heat shrink film tensioning guide device 60 is provided, further, as Figure 1 、 Figure 6 As shown, the frame 10 is also provided with a heat shrink film punching device 50, and the heat shrink film punching device 50 and the heat shrink film conveying path of the heat shrink film tensioning guide device 60 are sequentially connected. The heat shrink film punching device 50 can punch holes on the heat shrink film 100 to form the tear line 200 composed of holes. Figure 1 、 Figure 3 and Figure 5The heat shrink film punching device 50 includes a dotted line tool 52 and a dotted line tool pad 53 that are relatively arranged. The dotted line tool 52 and the dotted line tool pad 53 are both long and vertically arranged. The gap between the dotted line tool 52 and the dotted line tool pad 53 serves as a heat shrink film channel. The side surface of the dotted line tool 52 facing the dotted line tool pad 53 is evenly distributed with several punching teeth 51 along the width direction of the heat shrink film 100. The dotted line tool 52 and the dotted line tool pad 53 are respectively driven by their respective corresponding transmission mechanisms to approach each other and engage when they are closest to perform punching. The transmission mechanisms (54, 55) corresponding to the dotted line tool 52 and the dotted line tool pad 53 are respectively arranged above the frame 10. When the dotted line tool 52 and the dotted line tool pad 53 are engaged, each of the punching teeth 51 on the dotted line tool 52 can pierce the heat shrink film 100 to "punch holes" in the heat shrink film 100. One engagement can form a group of holes (i.e., a tear line 200) on the heat shrink film 100. Figure 5 and Figure 6The transmission mechanism 54 corresponding to the point and line tool 52 includes a first eccentric wheel 541 and a first rotating shaft 542 that is synchronously connected to the central axis of the first eccentric wheel 541, a first connecting seat 543 is provided near the edge of the wheel disc of the first eccentric wheel 541, and the point and line tool 52 is fixed on the first connecting seat 543; the transmission mechanism 55 corresponding to the point and line tool pad 53 includes a second eccentric wheel 551 and a second rotating shaft 552 that is synchronously connected to the central axis of the second eccentric wheel 55, a second connecting seat 553 is provided near the edge of the wheel disc of the second eccentric wheel 551, and the point and line tool pad 53 is fixed on the second connecting seat 553, either the first rotating shaft 542 or the second rotating shaft 552 is driven to rotate by a servo motor 56, and the first rotating shaft 542 and the second rotating shaft 552 are reversely rotated by a gear transmission mechanism 57 and a synchronous belt transmission mechanism 58. During operation, the heat shrink film 100 passes through the heat shrink film channel between the dotted line tool 52 and the dotted line tool pad 53. The dotted line tool 52 and the dotted line tool pad 53 can respectively rotate in opposite directions with the central axis of the corresponding eccentric wheel (541, 551) as the center of the circle; the dotted line tool 52 and the dotted line tool pad 53 approach each other during their respective rotations and engage when they are closest. The heat shrink film punching device 50 of the present invention can adjust the time difference between the two engagements of the dotted line cutter 52 and the dotted line cutter pad 53 (i.e., the time difference between the two "dots") by simply adjusting the rotational speed of the first rotating shaft 542 via the servo motor 56. Combined with adjusting the heat shrink film conveying speed (i.e., the conveying speed of the second battery conveying device 40), the length of the heat shrink film unit and the spacing between two adjacent tear lines 200 can be adjusted according to the different quality of the battery assemblies 400. This adapts to the heat shrink film packaging of battery assemblies 400 of different quality without replacing the components of the heat shrink film punching device 50, thus saving manpower, material, and cost. Of course, the heat shrink film punching device 50 of the present invention can also adopt the punching device of the existing authorization publication number CN100418711C. Furthermore, the structure for driving and conveying the dotted line cutter 52 and the dotted line cutter pad 53 toward each other is not limited to the specific structure shown in the drawings; it can also be implemented using a cylinder. Furthermore, a heat shrink film feeding guide device 140 is also provided on the frame 10 on the feed side of the heat shrink film punching device 50. The heat shrink film feeding guide device 140 includes several feeding guide rollers 141 erected above the frame 10. The feeding guide rollers 141 are parallel to the guide rollers 61 of the heat shrink film tensioning guide device 60.

[0044] Preferably, Figure 1As shown, a heat shrink film sealing mechanism 90 is provided in front of the film wrapping device 30 in the conveying direction. The heat shrink film sealing mechanism 90 is located on the side of the battery clamping and conveying channel 43 that is away from the heat shrink film inlet 300. The heat shrink film sealing mechanism is capable of sealing the opening of the heat shrink film 100 on the side that is away from the heat shrink film inlet 300 during the forward conveyance of the battery and heat shrink film. The heat shrink film sealing mechanism 90 can utilize a high-frequency welding knife.

[0045] Preferably, the heating channel is provided with air holes (conventional heating device structures are not shown) for blowing hot air into the channel. The heating channel is used to perform high-temperature blowing and shaping of the heat shrink film 100. Heat shrink film shrinks when heated, and when heated, each heat shrink film unit shrinks simultaneously, inevitably breaking along the tear line. The heating channel of the present invention can be, but is not limited to, a heating device 80 having air holes. However, using air blowing facilitates breaking the tear line at a relatively low temperature.

[0046] Preferably, Figure 1 As shown, a heater 110 is provided behind the conveying direction of the heating channel for preliminary shaping of the heat shrink film. The heater 110 can be a low-power and low-temperature heating device.

[0047] Preferably, at least one of the two second conveyor belts (41, 42) is a sponge belt, and the pressure of the sponge belt is adjustable, so that the heat shrink film 100 has a shrinkable space after being blown by the hot air of the heating channel.

[0048] Preferably, Figure 1 As shown, a third battery conveying device 120 is also connected to the front of the conveying direction of the second battery conveying device 40; a heating corridor 130 for baking and shaping the surface of the heat shrink film is also provided on the frame 10; the third battery conveying device 120 is set through the heating corridor 130.

[0049] The working principle of the battery heat shrink packaging equipment of the present invention is as follows: a plurality of battery assemblies 400 (four batteries placed side by side constitute one battery assembly 400) are arranged on the battery assembly bracket 21 on the first conveyor belt along the battery conveying direction, and are conveyed forward in sequence through the first conveyor belt, the battery conveying aisle 33, and the battery clamping conveying channel 43; the heat shrink film 100 coming out of the heat shrink film punching device 50 has a plurality of tear lines 200 spaced apart along its width direction, and a section of the heat shrink film 100 between two adjacent tear lines 200 serves as a heat shrink film unit; the heat shrink film coming out of the heat shrink film punching device 50 passes through each of the guide rollers 521 and the tensioning roller 522 in sequence, and then enters the battery conveying aisle 33 through the heat shrink film inlet 300; in the battery conveying aisle 33, the heat shrink film 100 is conveyed forward in sequence through the first conveyor belt, the battery conveying aisle 33, and the battery clamping conveying channel 43; The middle part of the inner heat shrink film 100 is first tightly fitted against the end face of the battery assembly 400 facing the heat shrink film tensioning guide device 60, and the upper and lower parts of the heat shrink film 100 are respectively folded toward the battery assembly 400 under the guidance of the two heat shrink film guide inclined surfaces (311, 321) until they completely cover the upper and lower surfaces of the battery assembly 400; each heat shrink film unit wraps a corresponding battery assembly 400; at the same time, the battery assembly bracket translation mechanism 22 drives the battery assembly bracket 21 to be pulled out of the heat shrink film; finally, when passing through the heating channel 70, the heat shrink film 100 is heated and shrunk, so that the heat shrink film 100 is separated along each tear line 200.

[0050] For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A battery heat shrink packaging device, characterized by: It includes a frame and a first battery conveying device, a film wrapping device and a second battery conveying device installed on the frame and connected in sequence along the battery conveying direction; The first battery conveying device includes a first conveyor belt, a plurality of battery assembly brackets mounted on the belt surface of the first conveyor belt and arranged in sequence along the battery conveying direction, and a plurality of battery assembly bracket translation mechanisms located on the side of the first conveyor belt and capable of driving each of the battery assembly brackets to translate in a direction perpendicular to the battery conveying direction; A plurality of battery assemblies are sequentially arranged on the battery assembly bracket along the battery conveying direction and conveyed forward by the first conveyor belt; The film wrapping device includes two pressing plates symmetrically arranged above and below, and the two pressing plates enclose a battery conveying passage connecting the battery conveying path of the first battery conveying device and the battery conveying path of the second battery conveying device; One end surface of each pressing plate facing the first battery conveying device is a heat shrink film guide slope, and the heat shrink film guide slope obliquely spans the entire battery conveying aisle along the battery conveying direction. The starting end of the heat shrink film guide slope is located on the outside of one side of the battery conveying aisle, and the end of the heat shrink film guide slope extends to the outside of the other side of the battery conveying aisle. The rear end of the heat shrink film guide slope in the conveying direction is the heat shrink film inlet; The heat shrink film maintains a film surface perpendicular to the belt surface of the first conveyor belt and enters the battery conveying aisle through the heat shrink film inlet. The conveying direction of the heat shrink film is consistent with the conveying direction of the battery. The heat shrink film has a plurality of tear lines spaced apart along its length, and each tear line is composed of a plurality of holes evenly distributed along the width of the heat shrink film. A section of the heat shrinkable film between two adjacent tear lines serves as a heat shrinkable film unit, and the heat shrinkable film units are arranged in a one-to-one correspondence with the battery assemblies; A battery limiting baffle is provided on the other side of the battery conveying aisle; The second battery conveying device includes two sets of second conveyor belts arranged opposite to each other in an upper and lower direction, and a battery clamping and conveying channel is formed between the two sets of second conveyor belts; The rack is further provided with a heating channel, and the second battery conveying device is provided through the heating channel; A heat shrink film tensioning guide device is provided on one side of the heat shrink film inlet of the battery conveying aisle, and the heat shrink film tensioning guide device includes a plurality of guide rollers and at least one tensioning roller vertically arranged above the frame and parallel to each other; the heat shrink film tensioning guide device, the heat shrink film inlet, and the heat shrink film conveying path of the battery conveying aisle are sequentially connected; The frame is also provided with a heat shrink film punching device, and the heat shrink film punching device and the heat shrink film conveying path of the heat shrink film tensioning guide device are connected in sequence; The heat shrink film punching device includes a dotted line tool and a dotted line tool pad that are relatively arranged, the dotted line tool and the dotted line tool pad are both long and vertically arranged, the gap between the dotted line tool and the dotted line tool pad serves as a heat shrink film channel, and a plurality of punching teeth are evenly distributed along the width direction of the heat shrink film on the side surface of the dotted line tool facing the dotted line tool pad. The dotted line tool and the dotted line tool pad are respectively driven by their respective corresponding transmission mechanisms to approach each other and engage to punch when they are closest, and the transmission mechanisms corresponding to the dotted line tool and the dotted line tool pad are respectively arranged above the frame; A heat shrink film sealing mechanism is provided in front of the film wrapping device in the conveying direction. The heat shrink film sealing mechanism is located on a side of the battery clamping and conveying channel away from the heat shrink film inlet.

2. The battery heat shrink packaging equipment according to claim 1, characterized in that: The transmission mechanism corresponding to the point and line tool includes a first eccentric wheel and a first rotating shaft synchronously connected to the central axis of the first eccentric wheel, a first connecting seat is provided near the edge of the wheel disc of the first eccentric wheel, and the point and line tool is fixed on the first connecting seat; the transmission mechanism corresponding to the point and line tool pad includes a second eccentric wheel and a second rotating shaft synchronously connected to the central axis of the second eccentric wheel, a second connecting seat is provided near the edge of the wheel disc of the second eccentric wheel, and the point and line tool pad is fixed on the second connecting seat, either the first rotating shaft or the second rotating shaft is driven to rotate by a servo motor, and the first rotating shaft and the second rotating shaft are driven in reverse rotation.

3. The battery heat shrink packaging equipment according to claim 1, characterized in that: A heat shrink film feeding guide device is also provided on the frame on the feeding side of the heat shrink film punching device. The heat shrink film feeding guide device includes several feeding guide rollers erected above the frame. The feeding guide rollers are parallel to the guide rollers of the heat shrink film tensioning guide device.

4. The battery heat shrink packaging equipment according to claim 1, characterized in that: The heating channel is provided with a blowing hole for blowing hot air toward the interior of the heating channel. A heater is provided behind the conveying direction of the heating channel for performing preliminary shaping of the heat shrink film.

5. The battery heat shrink packaging equipment according to claim 1, characterized in that: At least one of the two second conveyor belts is a sponge belt.

6. The battery heat shrink packaging equipment according to claim 1, characterized in that: A third battery conveyor is also connected to the front of the second battery conveyor in the conveying direction; a heating corridor for baking and shaping the surface of the heat shrink film is also provided on the frame; the third battery conveyor is arranged through the heating corridor.

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