Soft package battery aluminum plastic film sealing mechanism convenient to position

Abstract

The utility model discloses a soft package battery aluminum plastic film sealing mechanism convenient to position, which relates to the technical field of soft package battery manufacturing and comprises a base, a bearing frame welded on the outer wall of the top of the base, a pneumatic sealing component, a battery positioning component and a cooling component, the pneumatic sealing assembly comprises an air cylinder, a lifting plate, a ventilation frame and an electric heating sealing head fixedly connected to the outer wall of the bottom of the ventilation frame. According to the utility model, the battery positioning assembly is arranged, so that the batteries with different sizes can be accurately positioned, and the aluminum plastic film is prevented from shifting in the sealing process, so that the sealing reject ratio caused by improper positioning is reduced, and the quality of the soft package battery is improved; the cooling assembly is arranged, after heat sealing is completed, the sealing area can be evenly cooled, the sealing strength is ensured, the situation that an aluminum plastic film at the sealing position is softened again is prevented, and therefore the sealing reject ratio caused by uneven cooling is reduced, and the quality of the soft package battery is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soft-pack battery manufacturing, in particular to an aluminum-plastic film sealing mechanism for a soft-pack battery which is easy to position. Background Art

[0002] Soft-pack batteries usually use aluminum-plastic film as the packaging material. The material is composed of two layers of aluminum foil inside and outside and a middle layer of plastic film. For example, a soft-pack lithium battery is a liquid lithium-ion battery covered with a polymer shell and structurally packaged with aluminum-plastic film. In the event of a safety hazard, the soft-pack battery will only bulge and crack at most.

[0003] Currently, sealing is one of the key steps in the manufacturing process of soft-pack batteries, which is directly related to the sealing performance and service life of the battery. However, the existing sealing mechanism is prone to poor sealing due to inaccurate positioning and uneven cooling, which affects the quality of the battery. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an aluminum-plastic film sealing mechanism for soft-pack batteries that is easy to position, which effectively solves the problem that the existing aluminum-plastic film sealing mechanism for soft-pack batteries is prone to poor sealing due to inaccurate positioning and uneven cooling, thereby affecting the quality of the battery.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A soft-pack battery aluminum-plastic film sealing mechanism that is easy to position, comprising a base, a carrier frame welded to the outer wall of the top of the base, a pneumatic sealing component, a battery positioning component and a cooling component;

[0007] The pneumatic sealing assembly includes a cylinder fixed to the front outer wall of the carrier frame by bolts, a lifting plate fixedly connected to the bottom end of the cylinder piston rod, a ventilation frame fixedly connected to the bottom outer wall of the lifting plate, and an electric heating sealing head fixedly connected to the bottom outer wall of the ventilation frame;

[0008] The battery positioning assembly includes a slide slot opened on the top of the base, a bidirectional screw rotatably installed in the slide slot, two T-shaped positioning rods symmetrically screwed on two opposite threaded ends of the bidirectional screw, a first motor bracket welded to the side wall of the base, and a first servo motor fixed to the side wall of the first motor bracket by bolts;

[0009] By adopting the above technical solution, the two T-shaped positioning rods can be controlled to perform centering movement through the drive of the first servo motor, which is convenient for accurately positioning batteries of different sizes and ensuring that the aluminum-plastic film will not shift during the sealing process. This reduces the sealing defect rate caused by improper positioning, thereby improving the quality of soft-pack batteries.

[0010] Preferably, the outer walls of the two T-shaped positioning rods are slidably connected to the inner wall of the slide groove, which can ensure that the two T-shaped positioning rods can make linear motion, and the output shaft of the first servo motor passes through the first motor bracket and is coaxially connected to one end of the bidirectional screw through a coupling, which can ensure that the first servo motor drives the bidirectional screw to rotate stably.

[0011] Preferably, the cooling assembly includes a lead screw rotatably mounted in the ventilation frame, a reciprocating slider threadedly connected to the middle of the lead screw, a fan mounting frame fixedly connected to the outer wall of the bottom of the reciprocating slider, a cooling fan fixedly mounted at the bottom of the fan mounting frame, a second motor bracket welded to the side wall of the ventilation frame, and a second servo motor fixed to the side wall of the second motor bracket by bolts;

[0012] By adopting the above technical solution, the cooling fan arranged at the bottom of the reciprocating slider can be controlled to reciprocate in the horizontal direction through the drive of the second servo motor. In this way, after the heat sealing is completed, the sealing area can be evenly cooled to ensure the sealing strength and prevent the aluminum-plastic film at the sealing point from softening again, thereby reducing the sealing defect rate caused by uneven cooling and further improving the quality of the soft-pack battery.

[0013] Preferably, evenly distributed ventilation holes are provided at the bottom of the ventilation frame, and two guide transverse axes are symmetrically welded inside the ventilation frame.

[0014] Preferably, two guide sleeves are fixedly embedded in the reciprocating slider, and the two guide sleeves are slidably connected to the two guide transverse shafts respectively, which can ensure that the reciprocating slider can stably reciprocate in the horizontal direction.

[0015] Preferably, the output shaft of the second servo motor passes through the second motor bracket and is coaxially connected to one end of the lead screw through a coupling, thereby ensuring that the second servo motor drives the lead screw to rotate stably.

[0016] The beneficial effects of the utility model are:

[0017] 1. A battery positioning assembly is provided, and the two T-shaped positioning rods can be controlled to perform centering movement through the drive of the first servo motor, so as to accurately position batteries of different sizes and ensure that the aluminum-plastic film will not shift during the sealing process, thereby reducing the sealing defect rate caused by improper positioning, thereby improving the quality of soft-pack batteries;

[0018] 2. A cooling component is provided. The cooling fan provided at the bottom of the reciprocating slider can be controlled to reciprocate in the horizontal direction by the drive of the second servo motor. In this way, after the heat sealing is completed, the sealing area can be evenly cooled to ensure the sealing strength and prevent the aluminum-plastic film at the sealing from softening again, thereby reducing the sealing defect rate caused by uneven cooling and further improving the quality of the soft-pack battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall front view of the three-dimensional structure of the utility model;

[0020] Figure 2 It is a top view structural schematic diagram of the battery positioning assembly in the utility model;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the connection of the electric heat sealing head in the utility model;

[0022] Figure 4 It is a three-dimensional enlarged structural diagram of some parts in the utility model;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the cooling component in the utility model.

[0024] In the figure: 1. base; 2. bearing frame; 3. cylinder; 4. lifting plate; 5. ventilation frame; 6. electric heating sealing head; 7. slide groove; 8. bidirectional screw; 9. T-shaped positioning rod; 10. first motor bracket; 11. first servo motor; 12. lead screw; 13. reciprocating slider; 14. fan mounting bracket; 15. cooling fan; 16. second motor bracket; 17. second servo motor; 18. guide horizontal axis; 19. guide sleeve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1, reference Figure 1-3 , a soft-pack battery aluminum-plastic film sealing mechanism that is easy to position, comprising a base 1, a carrier frame 2 welded to the top outer wall of the base 1, a pneumatic sealing component and a battery positioning component;

[0027] The pneumatic sealing assembly includes a cylinder 3 and a lifting plate 4: the cylinder 3 is fixed to the front outer wall of the carrier frame 2 by bolts, and the lifting plate 4 is fixedly connected to the bottom end of the piston rod of the cylinder 3;

[0028] It also includes a ventilation rack 5 and an electric heat sealing head 6: the ventilation rack 5 is fixedly connected to the bottom outer wall of the lifting plate 4, the electric heat sealing head 6 is fixedly connected to the bottom outer wall of the ventilation rack 5, and the electric heat sealing head 6 adopts infrared heating or electric heating plate heating to ensure uniform and rapid heating of the aluminum-plastic film;

[0029] When the pneumatic sealing assembly is in use: the ventilation rack 5 connected to the bottom of the lifting plate 4 is controlled by the cylinder 3 to make a lifting movement, and then the electric heat sealing head 6 fixed to the bottom of the ventilation rack 5 is made to move up and down, which can achieve the effect of automatic sealing;

[0030] The battery positioning assembly includes a slide groove 7 and a bidirectional screw 8: the slide groove 7 is provided at the top of the base 1, and the bidirectional screw 8 is rotatably installed in the slide groove 7;

[0031] It also includes two T-shaped positioning rods 9: the two T-shaped positioning rods 9 are symmetrically screwed to two opposite threaded ends of the bidirectional screw 8, and the outer walls of the two T-shaped positioning rods 9 are slidably connected to the inner wall of the slide groove 7, which can ensure that the two T-shaped positioning rods 9 can move linearly;

[0032] It also includes a first motor bracket 10 and a first servo motor 11: the first motor bracket 10 is welded to the side wall of the base 1, the first servo motor 11 is fixed to the side wall of the first motor bracket 10 by bolts, and the output shaft of the first servo motor 11 passes through the first motor bracket 10 and is coaxially connected to one end of the bidirectional screw 8 through a coupling;

[0033] When the battery positioning assembly is in use: the bidirectional screw 8 is driven to rotate by the first servo motor 11, and then under the limit of the slide slot 7, the two T-shaped positioning rods 9 threadedly connected to the bidirectional screw 8 make a centering movement, which is convenient for accurate positioning of batteries of different sizes and ensures that the aluminum-plastic film will not shift during the sealing process, thereby reducing the sealing defect rate caused by improper positioning, thereby improving the quality of the soft-pack battery.

[0034] Example 2, reference Figure 1 and Figure 3-5 This embodiment is optimized on the basis of the first embodiment, specifically: a soft-pack battery aluminum-plastic film sealing mechanism that is easy to position, and also includes a cooling component, the cooling component includes:

[0035] Lead screw 12 and reciprocating slider 13: Lead screw 12 is rotatably installed in ventilation frame 5, and reciprocating slider 13 is threadedly connected to the middle part of lead screw 12;

[0036] Fan mounting frame 14 and cooling fan 15: The fan mounting frame 14 is fixedly connected to the bottom outer wall of the reciprocating slider 13, and the cooling fan 15 is fixedly installed at the bottom of the fan mounting frame 14;

[0037] The second motor bracket 16 and the second servo motor 17: the second motor bracket 16 is welded to the side wall of the ventilation frame 5, the second servo motor 17 is fixed to the side wall of the second motor bracket 16 by bolts, and the output shaft of the second servo motor 17 passes through the second motor bracket 16 and is coaxially connected to one end of the lead screw 12 through a coupling;

[0038] Furthermore, the bottom of the ventilation frame 5 is provided with evenly distributed ventilation holes, two guide transverse shafts 18 are symmetrically welded in the ventilation frame 5, and two guide sleeves 19 are fixedly embedded in the reciprocating slider 13. The two guide sleeves 19 are respectively slidably connected with the two guide transverse shafts 18, which can ensure that the reciprocating slider 13 can stably reciprocate in the horizontal direction;

[0039] In the specific implementation of this embodiment: the second servo motor 17 drives the lead screw 12 to rotate, and then under the guidance of the two guide sleeves 19, the reciprocating slider 13 threadedly connected to the lead screw 12 drives the cooling fan 15 installed on the fan mounting frame 14 to reciprocate in the horizontal direction, so that after the heat sealing is completed, the sealing area can be evenly cooled to ensure the sealing strength and prevent the aluminum-plastic film at the sealing position from re-softening, thereby reducing the sealing defect rate caused by uneven cooling and further improving the quality of the soft-pack battery.

[0040] The working principle of the utility model is as follows: first, the bidirectional screw 8 is driven to rotate by the first servo motor 11, and then under the limit of the slide slot 7, the two T-shaped positioning rods 9 threadedly connected with the bidirectional screw 8 perform centering movement, so as to facilitate accurate positioning of batteries of different sizes and ensure that the aluminum-plastic film will not shift during the sealing process;

[0041] Secondly, the cylinder 3 controls the ventilation rack 5 connected to the bottom of the lifting plate 4 to move up and down, and then the electric heat sealing head 6 fixed to the bottom of the ventilation rack 5 moves up and down, which can achieve the effect of automatic sealing;

[0042] Finally, the lead screw 12 is driven to rotate by the second servo motor 17, and then under the guidance of the two guide sleeves 19, the reciprocating slider 13 threadedly connected to the lead screw 12 will drive the cooling fan 15 installed on the fan mounting bracket 14 to reciprocate in the horizontal direction, so that after the heat sealing is completed, the sealing area can be evenly cooled to ensure the sealing strength and prevent the aluminum-plastic film at the sealing point from softening again.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A soft-pack battery aluminum-plastic film sealing mechanism that is easy to position, comprising a base (1) and a support frame (2) welded to the top outer wall of the base (1), characterized in that: Also included are a pneumatic sealing assembly, a battery positioning assembly, and a cooling assembly; The pneumatic sealing assembly comprises a cylinder (3) fixed to the front outer wall of the carrier frame (2) by bolts, a lifting plate (4) fixedly connected to the bottom end of the piston rod of the cylinder (3), a ventilation frame (5) fixedly connected to the bottom outer wall of the lifting plate (4), and an electric heat sealing head (6) fixedly connected to the bottom outer wall of the ventilation frame (5); The battery positioning assembly comprises a slide groove (7) opened on the top of the base (1), a bidirectional screw (8) rotatably installed in the slide groove (7), two T-shaped positioning rods (9) symmetrically screwed on two opposite threaded ends of the bidirectional screw (8), a first motor bracket (10) welded to the side wall of the base (1), and a first servo motor (11) fixed to the side wall of the first motor bracket (10) by bolts.

2. The aluminum-plastic film sealing mechanism for soft-pack batteries that is easy to position according to claim 1, characterized in that: The outer walls of the two T-shaped positioning rods (9) are slidably connected to the inner wall of the slide groove (7), and the output shaft of the first servo motor (11) passes through the first motor bracket (10) and is coaxially connected to one end of the bidirectional screw (8) through a coupling.

3. The aluminum-plastic film sealing mechanism for soft-pack batteries that is easy to position according to claim 1, characterized in that: The cooling assembly comprises a lead screw (12) rotatably mounted in a ventilation frame (5), a reciprocating slider (13) threadedly connected to the middle of the lead screw (12), a fan mounting frame (14) fixedly connected to the outer wall at the bottom of the reciprocating slider (13), a cooling fan (15) fixedly mounted at the bottom of the fan mounting frame (14), a second motor bracket (16) welded to the side wall of the ventilation frame (5), and a second servo motor (17) fixed to the side wall of the second motor bracket (16) by bolts.

4. The aluminum-plastic film sealing mechanism for soft-pack batteries that is easy to position according to claim 1, characterized in that: The bottom of the ventilation frame (5) is provided with evenly distributed ventilation holes, and two guide transverse axes (18) are symmetrically welded inside the ventilation frame (5).

5. The aluminum-plastic film sealing mechanism for soft-pack batteries that is easy to position according to claim 3, characterized in that: Two guide sleeves (19) are fixedly embedded in the reciprocating slide block (13), and the two guide sleeves (19) are respectively slidably connected to the two guide transverse shafts (18).

6. The aluminum-plastic film sealing mechanism for soft-pack batteries that is easy to position according to claim 3, characterized in that: The output shaft of the second servo motor (17) passes through the second motor bracket (16) and is coaxially connected to one end of the lead screw (12) via a coupling.

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