Soft package lithium battery skirt bending mechanism

Abstract

This utility model discloses a skirt bending mechanism for a soft-pack lithium battery, including a base plate and a bracket. The base plate is equipped with a lifting servo drive for controlling the raising and lowering of the bracket and a lateral servo module for controlling the forward and backward movement of the bracket. The bracket is equipped with an upper folding knife mechanism, a lower folding knife mechanism, and a rotating folding knife mechanism. This utility model can achieve ultra-narrow folding, with the mechanism capable of folding the battery skirt to a minimum width of 0.6mm. It exhibits good folding consistency and employs a double-arc hole design, enabling the rotating folding knife to rotate with high precision without any slippage or wobbling. The rotating folding knife utilizes a cam groove and an arc hole to convert linear motion into rotational motion.

Description

Technical Field

[0001] This utility model relates to molding equipment for soft-pack lithium batteries, and particularly to a skirt bending mechanism for soft-pack lithium batteries. Background Technology

[0002] Soft-pack batteries are gradually demonstrating their advantages and gaining prominence due to their superior safety performance, light weight, large capacity, low internal resistance, and flexible design. During the production of soft-pack batteries, after the sealing process, a skirt is left unsealed. This skirt needs to be manually folded to fold onto the side of the battery pack. This requires highly skilled operation. Furthermore, due to differences in individual techniques and force applied during manual folding, the final outer dimensions and thickness of the battery pack vary, failing to meet the folding requirements of soft-pack lithium battery skirts. Summary of the Invention

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a skirt bending mechanism for soft-pack lithium batteries.

[0004] The purpose of this utility model is achieved through the following technical solution: a skirt bending mechanism for a soft-pack lithium battery, including a base plate and a bracket. The base plate is provided with a lifting servo drive for controlling the lifting of the bracket and a lateral servo module for controlling the forward and backward movement of the bracket. The bracket is provided with an upper bending knife mechanism, a lower bending knife mechanism and a rotating bending knife mechanism.

[0005] The rotary folding knife mechanism includes a rotating shaft and a rotary folding knife lifting servo module. The rotary folding knife lifting servo module controls the movement of a lifting plate. The lifting plate has cam guide plates at both ends. The bracket has arc-shaped holes on both sides. The rotating shaft has cams at both ends. The two cam guide plates have cam grooves. The cams pass through the cam grooves. The rotating shaft has a rotary folding knife.

[0006] As an improvement of the skirt bending mechanism for soft-pack lithium batteries of this utility model, linear guide rails are provided on both sides of the bracket, and the cam guide plate is slidably connected to the linear guide rails through a slider;

[0007] The rotary folding knife lifting servo module includes a first lifting servo motor and a first lifting transmission screw. The output shaft of the first lifting servo motor is connected to the first lifting transmission screw via a coupling. The first lifting transmission screw is connected to the lifting plate via a screw nut.

[0008] As an improvement of the skirt bending mechanism of the soft-pack lithium battery of this utility model, when the cam guide plate is raised and lowered by the rotary folding knife lifting servo module, the cam moves in the cam groove while the rotating shaft moves along the trajectory of the arc hole, and the movement of the rotating shaft can drive the rotary folding knife to rotate.

[0009] As an improvement of the soft-pack lithium battery skirt bending mechanism of this utility model, the rotating folding knife adopts a two-stage rotational folding of the battery skirt. The first stage of the rotating folding knife has a rotation angle of 0 degrees to 110 degrees, and the second stage of the rotating folding knife has a rotation angle of 110 degrees to 180 degrees.

[0010] As an improvement of the skirt bending mechanism of the soft-pack lithium battery of this utility model, when bending the edge, the upper folding knife mechanism includes an upper mounting plate. The upper mounting plate is provided with an upper folding knife control servo motor and an upper linear slide rail. The upper linear slide rail is slidably connected to the upper folding knife mounting plate through a slider. An upper folding knife is provided at the bottom of the upper folding knife mounting plate. The output shaft of the upper folding knife control servo motor is connected to the upper folding knife transmission screw through a coupling. The upper folding knife transmission screw is connected to the upper folding knife mounting plate through a screw nut.

[0011] The upper folding blade mounting plate is also equipped with a guide rail, which is connected to a pressure sensor mounting plate via a slider. The bottom of the pressure sensor mounting plate is equipped with a pressure sensor, which can sense the pressure of the upper folding blade in real time.

[0012] As an improvement of the skirt bending mechanism of the soft-pack lithium battery of this utility model, when bending the edge, the lower folding knife mechanism includes a lower folding knife mounting plate, a lower folding knife is provided on the lower folding knife mounting plate, and the rotating folding knife is located on one side of the lower folding knife. The rotation folding direction of the rotating folding knife is counterclockwise.

[0013] As an improvement of the skirt bending mechanism of the soft-pack lithium battery of this utility model, when the edge is reversed, the upper folding knife mechanism includes a second upper folding knife mounting plate, the second upper folding knife mounting plate is provided with a second upper folding knife, the rotating folding knife is located on one side of the second upper folding knife, and the rotation folding direction of the rotating folding knife is clockwise.

[0014] As an improvement of the skirt bending mechanism of the soft-pack lithium battery of this utility model, when the edge is reversed, the lower folding knife mechanism includes a lower mounting plate. The lower mounting plate is provided with a lower folding knife control servo motor and a lower linear slide rail. The lower linear slide rail is slidably connected to a second lower folding knife mounting plate through a slider. A second lower folding knife is provided at the bottom of the second lower folding knife mounting plate. The output shaft of the lower folding knife control servo motor is connected to the lower folding knife transmission screw through a coupling. The lower folding knife transmission screw is connected to the second lower folding knife mounting plate through a screw nut.

[0015] The second folding blade mounting plate is also provided with a second guide rail. The second guide rail is connected to the second pressure sensor mounting plate via a slider. The bottom of the second pressure sensor mounting plate is provided with a second pressure sensor, which can sense the pressure of the folding blade in real time.

[0016] As an improvement of the skirt bending mechanism of the soft-pack lithium battery of this utility model, the lifting servo drive includes a lifting servo motor mounting bracket, a second lifting servo motor is provided on the lifting servo motor mounting bracket, the output shaft of the second lifting servo motor is connected to a second lifting transmission screw through a coupling, and the second lifting transmission screw is connected to the base plate through a second screw nut.

[0017] The base plate is provided with a plurality of guide sleeves spaced apart, and each guide sleeve is fitted onto a guide rod.

[0018] As an improvement of the skirt bending mechanism of the soft-pack lithium battery of this utility model, the transverse servo module includes a transverse servo motor mounting bracket, on which a transverse servo motor is mounted. The output shaft of the transverse lifting servo motor is connected to a transverse transmission lead screw through a coupling. The transverse transmission lead screw is connected to the bottom of the bracket through a lead screw nut. The bottom of the bracket is slidably connected to the base plate through a slide rail and a slider.

[0019] The working principle of this utility model for forward bending is as follows: the rotating folding blade is located on one side of the lower folding blade, and the upper folding blade is controlled by the upper folding blade servo motor to descend and together with the lower folding blade to clamp and press the battery skirt. The rotating folding blade is guided by the structure of cam, cam groove and arc hole to rotate to 110 degrees. The upper folding blade is controlled by the upper folding blade servo motor to rise and reset. The rotating folding blade is controlled by the rotating folding blade lifting servo module to continue rotating to 180 degrees and then reset, completing the forward bending action.

[0020] The working principle of this utility model for reverse folding is as follows: the rotating folding blade is located on one side of the upper folding blade, and the lower folding blade is controlled by the lower folding blade servo motor to rise and together with the upper folding blade to clamp and press the battery skirt. The rotating folding blade is guided by the structure of cam, cam groove and arc hole to rotate to 110 degrees. The lower folding blade is controlled by the lower folding blade servo motor to descend and reset. The rotating folding blade is controlled by the rotating folding blade lifting servo module to continue rotating to 180 degrees and then reset, completing the reverse bending action.

[0021] The beneficial effects of this utility model are as follows: This utility model can achieve ultra-narrow folding edges; the mechanism can fold the battery skirt to a minimum width of 0.6mm, with good folding consistency. The double-arc hole design allows the rotating folding blade to rotate with high precision without any wobble or wobbling. The rotating folding blade uses a cam groove and arc holes to convert linear motion into rotational motion. During forward folding, the upper folding blade uses a servo pressure sensor to monitor the pressure in real time, preventing damage to the battery skirt. During reverse folding, the lower folding blade uses a servo pressure sensor to monitor the pressure in real time, also preventing damage to the battery skirt. Attached Figure Description

[0022] Figure 1 This is a perspective view of the folded edge of this utility model;

[0023] Figure 2 This is the front view of the folded edge of this utility model;

[0024] Figure 3 This is a side view of the folded edge of this utility model;

[0025] Figure 4 This is a perspective view of the reverse folded edge of this utility model;

[0026] Figure 5 This is the front view of the reverse folded edge of this utility model;

[0027] Figure 6 This is a side view of the reverse folded edge of this utility model. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figures 1-6 As shown, a skirt bending mechanism for a soft-pack lithium battery includes a base plate 1 and a bracket 2. The base plate 1 is provided with a lifting servo drive 3 for controlling the lifting of the bracket 2 and a lateral servo module 4 for controlling the forward and backward movement of the bracket 2. The bracket 2 is provided with an upper folding knife mechanism 5, a lower folding knife mechanism 6 and a rotating folding knife mechanism 7.

[0032] The rotary folding knife mechanism 7 includes a rotating shaft 71 and a rotary folding knife lifting servo module 72. The rotary folding knife lifting servo module 72 controls the movement of a lifting plate 78. The lifting plate 78 has cam guide plates 73 at both ends. The bracket 2 has arc-shaped holes 74 on both sides. The rotating shaft 71 has cams 75 at both ends. The two cam guide plates 73 have cam grooves 76. The cams 75 pass through the cam grooves 76. The rotating shaft 71 is equipped with a rotary folding knife 77.

[0033] Preferably, linear guide rails 21 are provided on both sides of the bracket 2, and the cam guide plate 73 is slidably connected to the linear guide rails 21 via a slider;

[0034] The rotary folding knife lifting servo module 72 includes a first lifting servo motor 721 and a first lifting transmission screw. The output shaft of the first lifting servo motor 721 is connected to the first lifting transmission screw through a coupling. The first lifting transmission screw is connected to the lifting plate 78 through a screw nut.

[0035] Preferably, when the cam guide plate 73 is raised and lowered by the rotary folding knife lifting servo module 72, the cam 75 moves in the cam groove 76 while the rotating shaft 71 moves along the trajectory of the arc hole 74. The movement of the rotating shaft 71 can drive the rotary folding knife 77 to rotate.

[0036] Preferably, the rotary folding knife 77 adopts a two-stage rotary folding battery skirt, with the first stage of the rotary folding knife 77 having a rotation angle of 0 degrees to 110 degrees, and the second stage of the rotary folding knife 77 having a rotation angle of 110 degrees to 180 degrees.

[0037] Preferably, during the forward folding process, the upper folding knife mechanism 5 includes an upper mounting plate 51, which is equipped with an upper folding knife control servo motor 52 and an upper linear slide rail 53. The upper linear slide rail 53 is slidably connected to the upper folding knife mounting plate 54 via a slider. An upper folding knife 55 is provided at the bottom of the upper folding knife mounting plate 54. The output shaft of the upper folding knife control servo motor 52 is connected to the upper folding knife transmission screw via a coupling. The upper folding knife transmission screw is connected to the upper folding knife mounting plate 54 via a screw nut.

[0038] The upper folding knife mounting plate 54 is also provided with a guide rail 56. The guide rail 56 is connected to a pressure sensor mounting plate 57 and a limiting plate 501 through a slider. A spring 502 is provided between the pressure sensor mounting plate 57 and the limiting plate 501. A pressure sensor 58 is provided at the bottom of the pressure sensor mounting plate 57. The pressure sensor 58 is connected to the upper folding knife mounting plate 54. The pressure sensor 58 can sense the pressure of the upper folding knife 55 in real time.

[0039] Preferably, during the forward folding, the lower folding knife mechanism 6 includes a lower folding knife mounting plate 61, on which a lower folding knife 62 is provided, and a rotating folding knife 77 is located on one side of the lower folding knife 62. The rotation folding direction of the rotating folding knife 77 is counterclockwise.

[0040] Preferably, when the edge is reversed, the upper folding knife mechanism 5 includes a second upper folding knife mounting plate 59, on which a second upper folding knife 50 is provided, and a rotating folding knife 77 is located on one side of the second upper folding knife 50, and the rotation folding direction of the rotating folding knife 77 is clockwise.

[0041] Preferably, when the edge is reversed, the lower folding knife mechanism 6 includes a lower mounting plate 63. The lower mounting plate 63 is provided with a lower folding knife control servo motor 64 and a lower linear slide rail 65. The lower linear slide rail 65 is slidably connected to a second lower folding knife mounting plate 66 through a slider. A second lower folding knife 67 is provided at the bottom of the second lower folding knife mounting plate 66. The output shaft of the lower folding knife control servo motor 64 is connected to the lower folding knife transmission screw through a coupling. The lower folding knife transmission screw is connected to the second lower folding knife mounting plate 66 through a screw nut.

[0042] The second lower folding blade mounting plate 66 is also provided with a second guide rail 68. The second guide rail 68 is connected to the second pressure sensor mounting plate 69 and the second limiting plate 601 through a slider. A second spring 602 is provided between the second pressure sensor mounting plate 69 and the second limiting plate 601. A second pressure sensor 60 is provided at the bottom of the second pressure sensor mounting plate 69. The second pressure sensor 60 is connected to the second lower folding blade mounting plate 66. The second pressure sensor 60 can sense the pressure of the lower folding blade 67 in real time.

[0043] Preferably, the lifting servo drive 3 includes a lifting servo motor mounting bracket 31, a second lifting servo motor 32 is provided on the lifting servo motor mounting bracket 31, the output shaft of the second lifting servo motor 32 is connected to a second lifting transmission screw 33 through a coupling, and the second lifting transmission screw 33 is connected to the base plate 1 through a second screw nut 34.

[0044] Multiple guide sleeves 11 are spaced apart on the base plate 1, and each guide sleeve 11 is fitted onto a guide rod 12.

[0045] Preferably, the transverse servo module 4 includes a transverse servo motor mounting bracket 41, on which a transverse servo motor 42 is mounted. The output shaft of the transverse lifting servo motor 42 is connected to a transverse transmission screw via a coupling. The transverse transmission screw is connected to the bottom of the bracket 2 via a screw nut. The bottom of the bracket 2 is slidably connected to the base plate 1 via a slide rail and a slider.

[0046] The working principle of the forward bending of this utility model is as follows: the rotating bending blade 77 is located on one side of the lower bending blade, the upper bending blade is controlled by the upper bending blade servo motor to descend and together with the lower bending blade to clamp and press the battery skirt edge, the rotating bending blade is guided by the structure of cam, cam groove and arc hole to rotate to 110 degrees, the upper bending blade is controlled by the upper bending blade servo motor to rise and reset, the rotating bending blade is controlled by the rotating bending blade lifting servo module to continue to rotate to 180 degrees, and then the rotating bending blade resets, completing the forward bending action.

[0047] The working principle of this utility model for reverse folding is as follows: the rotating folding blade 77 is located on one side of the upper folding blade, and the lower folding blade is controlled by the lower folding blade servo motor to rise and together with the upper folding blade to clamp and press the battery skirt. The rotating folding blade is guided by the structure of cam, cam groove and arc hole to rotate to 110 degrees. The lower folding blade is controlled by the lower folding blade servo motor to descend and reset. The rotating folding blade is controlled by the rotating folding blade lifting servo module to continue rotating to 180 degrees and then reset, completing the reverse bending action.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and structure of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soft package lithium battery skirt bending mechanism, comprising a bottom plate and a support, characterized in that, The base plate is equipped with a lifting servo drive for controlling the lifting of the bracket and a lateral servo module for controlling the forward and backward movement of the bracket. The bracket is equipped with an upper folding knife mechanism, a lower folding knife mechanism and a rotating folding knife mechanism. The rotary folding knife mechanism includes a rotating shaft and a rotary folding knife lifting servo module. The rotary folding knife lifting servo module controls the movement of a lifting plate. The lifting plate has cam guide plates at both ends. The bracket has arc-shaped holes on both sides. The rotating shaft has cams at both ends. The two cam guide plates have cam grooves. The cams pass through the cam grooves. The rotating shaft has a rotary folding knife.

2. The soft package lithium battery skirt bending mechanism according to claim 1, characterized in that, The bracket is provided with linear guide rails on both sides, and the cam guide plate is slidably connected to the linear guide rails via a slider; The rotary folding knife lifting servo module includes a first lifting servo motor and a first lifting transmission screw. The output shaft of the first lifting servo motor is connected to the first lifting transmission screw via a coupling. The first lifting transmission screw is connected to the lifting plate via a screw nut.

3. The soft package lithium battery skirt bending mechanism of claim 2, wherein, When the cam guide plate is raised and lowered by the rotary folding knife lifting servo module, the cam moves in the cam groove while the rotating shaft moves along the trajectory of the arc-shaped hole. The movement of the rotating shaft can drive the rotary folding knife to rotate.

4. The soft package lithium battery skirt bending mechanism of claim 3, wherein, The rotating folding knife uses a two-stage rotating folding mechanism for the battery skirt. The first stage of the rotating folding knife has a rotation angle of 0 degrees to 110 degrees, and the second stage has a rotation angle of 110 degrees to 180 degrees.

5. The soft package lithium battery skirt bending mechanism of claim 1, wherein, During the forward folding process, the upper folding knife mechanism includes an upper mounting plate. The upper mounting plate is equipped with an upper folding knife control servo motor and an upper linear slide rail. The upper linear slide rail is slidably connected to the upper folding knife mounting plate via a slider. An upper folding knife is provided at the bottom of the upper folding knife mounting plate. The output shaft of the upper folding knife control servo motor is connected to the upper folding knife transmission screw via a coupling. The upper folding knife transmission screw is connected to the upper folding knife mounting plate via a screw nut. The upper folding blade mounting plate is also equipped with a guide rail, which is connected to a pressure sensor mounting plate via a slider. The bottom of the pressure sensor mounting plate is equipped with a pressure sensor, which can sense the pressure of the upper folding blade in real time.

6. The soft-pack lithium battery skirt bending mechanism according to claim 3, characterized in that, When folding the edge, the lower folding knife mechanism includes a lower folding knife mounting plate, on which a lower folding knife is provided, and the rotating folding knife is located on one side of the lower folding knife. The rotating folding knife rotates counterclockwise.

7. The soft-pack lithium battery skirt bending mechanism according to claim 3, characterized in that, When the edge is reversed, the upper folding knife mechanism includes a second upper folding knife mounting plate, on which a second upper folding knife is provided, and the rotating folding knife is located on one side of the second upper folding knife, and the rotating folding direction of the rotating folding knife is clockwise.

8. The soft-pack lithium battery skirt bending mechanism according to claim 1, characterized in that, When the edge is reversed, the lower folding knife mechanism includes a lower mounting plate. The lower mounting plate is equipped with a lower folding knife control servo motor and a lower linear slide rail. The lower linear slide rail is slidably connected to a second lower folding knife mounting plate via a slider. A second lower folding knife is provided at the bottom of the second lower folding knife mounting plate. The output shaft of the lower folding knife control servo motor is connected to the lower folding knife transmission screw via a coupling. The lower folding knife transmission screw is connected to the second lower folding knife mounting plate via a screw nut. The second folding blade mounting plate is also provided with a second guide rail. The second guide rail is connected to the second pressure sensor mounting plate via a slider. The bottom of the second pressure sensor mounting plate is provided with a second pressure sensor, which can sense the pressure of the folding blade in real time.

9. The soft-pack lithium battery skirt bending mechanism according to claim 1, characterized in that, The lifting servo drive includes a lifting servo motor mounting bracket, on which a second lifting servo motor is mounted. The output shaft of the second lifting servo motor is connected to a second lifting transmission screw via a coupling, and the second lifting transmission screw is connected to the base plate via a second screw nut. The base plate is provided with a plurality of guide sleeves spaced apart, and each guide sleeve is fitted onto a guide rod.

10. The soft-pack lithium battery skirt bending mechanism according to claim 1, characterized in that, The transverse servo module includes a transverse servo motor mounting bracket, on which a transverse servo motor is mounted. The output shaft of the transverse servo motor is connected to a transverse transmission lead screw via a coupling. The transverse transmission lead screw is connected to the bottom of the bracket via a lead screw nut. The bottom of the bracket is slidably connected to the base plate via a slide rail and a slider.

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