Battery glue pressing mechanism

Abstract

The utility model relates to the technical field of battery glue coating, in particular to a battery glue pressing mechanism. The flat surface extrusion part is used for extruding the adhesive tape attached to the lower surface of the battery pack; the step surface extrusion assembly comprises a first extrusion part and a second extrusion part, the first extrusion part is used for extruding the adhesive tape attached to the step horizontal plane of the battery pack, and the second extrusion part is used for extruding the adhesive tape attached to the upper surface of the battery pack; one of the two groups of linear modules is used for driving the flat surface extrusion component to be close to or far away from the battery pack in the direction perpendicular to the lower surface of the battery pack, and the other group of linear modules is used for driving the step surface extrusion component to be close to or far away from the battery pack in the direction perpendicular to the upper surface of the battery pack. The device is suitable for extruding a step end face to complete adhesive tape pressing treatment on the step end face of a battery pack, so that adhesive tape wrapping is tighter.

Description

Technical Field

[0001] The present application relates to the technical field of battery encapsulation, and in particular to a battery encapsulation mechanism. Background Art

[0002] The implementation of my country's power system reform policy, the gradual establishment of the spot market, the large-scale grid connection of renewable energy, the improvement of the distributed energy system, the rapid popularization of electric vehicles, and the development and improvement of the energy Internet will continue to promote the steady growth of the energy storage market. In the future, the maturity of energy storage technology and application strategies, the formulation of standards and specifications, the realization of cost reduction and large-scale production, and the establishment of energy storage application markets and price mechanisms will ensure that energy storage plays a more solid role in supporting China's transformation of its energy structure to a low-carbon one. With the rapid development of the new energy industry, energy storage batteries are widely used in various fields such as 5G base stations, hybrid vehicles, home energy storage, and high-speed security backup power supplies. In the production of lithium batteries, after winding, since the internal pole pieces and diaphragm paper structures of lithium batteries are relatively loose, it is generally necessary to shape and glue the lithium batteries to make the cells denser to ensure the firmness of the internal structure of the lithium batteries. In order to effectively prevent the misalignment between the pole pieces and diaphragms of the battery cells and the wrinkles of the diaphragms during subsequent transportation and turnover, the safety of lithium batteries can be greatly improved. Square soft-pack batteries are widely used in various electrical products, especially in powering mobile terminal products, due to their small thickness.

[0003] The gluing of square batteries includes gluing on the top surface, gluing on both sides and gluing on the end surfaces. Among them, the battery pack needs to be extruded and shaped after lamination, gluing on the top surface and gluing on both sides to obtain a square battery pack with a regular structure. The end surface of the battery pack where the electrode is located is a step structure, and the battery pack electrode extends out of the step. The step end surface of the battery pack needs to be glued and packaged to improve the safety of the battery. In order to improve the tightness of the tape wrapping the step end surface of the battery, it is usually necessary to extrude the wrapped tape to improve the tightness of the tape wrapping the step end surface of the battery pack. However, the existing gluing equipment can usually only perform gluing on the tape attached to the flat surface, and cannot perform gluing on the tape attached to the step end surface of the battery pack. Utility Model Content

[0004] In order to overcome the technical defect that the existing laminating equipment can usually only perform laminating processing on the tape adhered to the flat surface, but cannot perform laminating processing on the tape adhered to the stepped end surface of the battery pack, the present application provides a battery laminating mechanism.

[0005] The battery glue pressing mechanism provided in this application adopts the following technical solutions: including:

[0006] A fixture, used to fix and carry the battery pack to be processed;

[0007] A flat surface extrusion component, used to extrude the tape to fit the lower surface of the battery pack;

[0008] A step surface extrusion assembly, comprising a first extrusion component and a second extrusion component, the extrusion surfaces of the first extrusion component and the second extrusion component are parallel to each other, the extrusion surfaces of the first extrusion component and the second extrusion component are not in the same plane, the first extrusion component is used to extrude the tape adhered to the step horizontal surface of the battery pack, and the second extrusion component is used to extrude the tape adhered to the upper surface of the battery pack;

[0009] Two groups of linear modules, one group of linear modules is used to drive the flat surface extrusion component to approach or move away from the battery pack along a direction perpendicular to the lower surface of the battery pack, and the other group of linear modules is used to drive the step surface extrusion component to approach or move away from the battery pack along a direction perpendicular to the upper surface of the battery pack.

[0010] By adopting the above technical solution, the battery pack is fixed in the fixture, wherein one group of linear modules drives the flat surface extrusion component to approach the battery pack along a direction perpendicular to the lower surface of the battery pack, and the flat surface extrusion component presses against part of the tape attached to the lower surface of the battery pack. At the same time, another group of linear modules drives the step surface extrusion assembly to approach the battery pack along a direction perpendicular to the upper surface of the battery pack, and the first extrusion component presses against the step horizontal surface of the step end surface of the battery pack, and the second extrusion component presses against the upper surface of the battery pack. The flat surface extrusion component and the step surface extrusion assembly complete the closing action, and squeeze the tape wrapped on the step end surface of the battery pack from top to bottom. The extrusion surfaces of the first extrusion component and the second extrusion component are parallel to each other, and the extrusion surfaces of the first extrusion component and the second extrusion component are not in the same plane, so that the first extrusion component and the second extrusion component are suitable for extruding the step end surface, so as to complete the gluing process of the tape on the step end surface of the battery pack, so that the tape is wrapped more tightly.

[0011] Preferably, the step surface extrusion assembly also includes a connecting seat and a buffer component, the connecting seat is fixed to the output end of the corresponding linear module, the first extrusion component is fixed to the connecting seat, the buffer component is arranged on the connecting seat, the second extrusion component is connected to the buffer component, and the buffer component is used to provide the second extrusion component with an elastic force perpendicular to the extrusion surface of the second extrusion component.

[0012] By adopting the above technical solution, the buffer component provides the second extrusion component with an elastic force perpendicular to the extrusion surface of the second extrusion component. When the second extrusion component resists and extrudes the upper surface of the battery pack, it can play a good buffering role and avoid damage to the battery pack.

[0013] Preferably, the buffer component includes a connecting rod and a compression spring, the connecting rod is slidably inserted into the connecting seat, the second extrusion component is detachably connected to the connecting rod, and the compression spring is clamped between the connecting seat and the second extrusion component.

[0014] By adopting the above technical solution, the second extrusion component is detachably connected to the connecting rod. When it is necessary to process battery packs of different thicknesses, the second extrusion component of appropriate height can be replaced, so that the height difference between the extrusion surfaces of the first extrusion component and the second extrusion component meets the requirement of the thickness of the battery pack, thereby making the present technical solution applicable to the glue pressing processing of more types of battery packs; the connecting rod slidably inserted into the connecting seat cooperates with the compression spring to provide elastic force, and the buffer component has good structural stability.

[0015] Preferably, the compression spring is sleeved outside the connecting rod.

[0016] By adopting the above technical solution, the compression spring is sleeved outside the connecting rod, and the connecting rod can play a good guiding and limiting role for the compression spring, thereby enhancing the stability of the compression spring during elastic deformation.

[0017] Preferably, a countersunk hole is provided on the upper surface of the second extruded component, a locking threaded hole is provided on the side of the second extruded component, the locking threaded hole is connected to the countersunk hole, a locking screw is provided in the locking threaded hole, the lower end of the connecting rod is inserted into the countersunk hole, and the end of the locking screw abuts against the side of the connecting rod.

[0018] By adopting the above technical solution, the locking threaded hole and the locking screw are used to realize the detachable connection of the second extrusion component, and the disassembly and replacement of the second extrusion component is quick and convenient.

[0019] Preferably, there are two connecting rods, and there are two corresponding compression springs. The two connecting rods are arranged parallel to each other, and the sliding direction of the connecting rods is perpendicular to the upper surface of the battery pack.

[0020] By adopting the above technical solution, a double connecting rod and a double compression spring are combined to form a buffer component, and the buffer component has good structural stability.

[0021] Preferably, the linear module is a slide cylinder, and the flat surface extrusion component and the step surface extrusion assembly are respectively fixed to the output ends of two groups of slide cylinders.

[0022] By adopting the above technical solution, the linear module uses a slide cylinder, and the flat surface extrusion components and the step surface extrusion components have a fast moving speed, high displacement accuracy, strong displacement controllability, stable operation, and good wear resistance. After long-term use, the displacement accuracy will not decrease significantly.

[0023] Preferably, the battery glue pressing mechanism also includes two groups of stroke control components, which are respectively used to limit the strokes of the two groups of linear modules, and the two groups of stroke control components are respectively connected to the two groups of linear modules by electrical signals.

[0024] By adopting the above technical solution, two sets of linear modules drive the flat surface extrusion component and the step surface extrusion assembly to move. When they reach the closed position and complete the closing, the two sets of stroke control components are triggered and the two sets of linear modules stop working to complete the precise closing of the flat surface extrusion component and the step surface extrusion assembly.

[0025] Preferably, the formation control component is a travel switch, and the travel switch is arranged on the side of the linear module.

[0026] By adopting the above technical solution, the flat surface extrusion component and the step surface extrusion assembly are controlled by the travel switch to control the closing position of the flat surface extrusion component and the step surface extrusion assembly, with high control precision and good accuracy.

[0027] Preferably, the fixture includes a supporting seat and a locking assembly, the supporting seat is provided with a limiting groove for limiting the battery pack, the locking assembly includes an angle cylinder and a locking component for pressing the battery pack in the limiting groove, and the locking component is fixed to the output end of the angle cylinder.

[0028] By adopting the above technical solution, the battery pack is placed in the limit groove, the battery pack is pre-positioned by the limit groove, and the corner cylinder works to drive the locking component to rotate and move downward toward the battery pack until it rests against the upper surface of the battery pack. The battery pack is fixed, and the limit groove is pre-positioned to place the battery pack with high placement accuracy. The battery pack is fixed by the corner cylinder in cooperation with the locking component, and the locking and releasing actions are fast, making it easy to take and place.

[0029] Preferably, the battery glue pressing mechanism also includes a mounting frame, and the linear module is fixed to the mounting frame.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. The battery pack is fixed in the fixture, wherein one set of linear modules drives the flat surface extrusion component to approach the battery pack along a direction perpendicular to the lower surface of the battery pack, and the flat surface extrusion component presses against a portion of the tape attached to the lower surface of the battery pack. At the same time, another set of linear modules drives the step surface extrusion assembly to approach the battery pack along a direction perpendicular to the upper surface of the battery pack, and the first extrusion component presses against the step horizontal surface of the step end surface of the battery pack, and the second extrusion component presses against the upper surface of the battery pack. The flat surface extrusion component and the step surface extrusion assembly complete the closing action, and extrudes the tape wrapped on the step end surface of the battery pack from top to bottom. The extrusion surfaces of the first extrusion component and the second extrusion component are parallel to each other, and the extrusion surfaces of the first extrusion component and the second extrusion component are not in the same plane, so that the first extrusion component and the second extrusion component are suitable for extruding the step end surface, so as to complete the gluing process of the tape on the step end surface of the battery pack, so that the tape wrapping is tighter;

[0032] 2. The second extrusion component is detachably connected to the connecting rod. When it is necessary to process battery packs of different thicknesses, the second extrusion component of appropriate height can be replaced so that the height difference between the extrusion surfaces of the first extrusion component and the second extrusion component meets the thickness requirement of the battery pack, thereby making the technical solution applicable to the glue pressing processing of more types of battery packs; the connecting rod slidably inserted into the connecting seat cooperates with the compression spring to provide elastic force, and the buffer component has good structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a perspective view of an embodiment.

[0034] Figure 2 is another perspective view of the embodiment.

[0035] Figure 3 This is a three-dimensional diagram of the embodiment after the jig is removed.

[0036] Figure 4 This is an exploded view of this embodiment after the fixture is removed.

[0037] Figure 5 4 is a perspective view of the second extrusion component of this embodiment.

[0038] Figure 6 It is a three-dimensional diagram of the battery pack to be laminated in this embodiment.

[0039] Explanation of the reference numerals: 1. Mounting frame; 2. Linear module; 3. Flat surface extrusion component; 4. Step surface extrusion assembly; 41. First extrusion component; 42. Second extrusion component; 43. Connecting seat; 44. Buffer component; 441. Connecting rod; 442. Compression spring; 45. Countersunk hole; 46. Locking threaded hole; 5. Jig; 51. Bearing seat; 52. Limiting groove; 53. Locking assembly; 531. Locking component; 532. Angle cylinder; 6. Stroke control assembly; 71. Battery body; 72. Electrode; 73. Step height surface; 74. Step horizontal surface. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-Figure 6 This application is described in further detail.

[0041] Reference Figure 6 The battery pack includes a battery body 71, a step and an electrode 72 extending from the step, and the step includes a step height surface 73 and a step horizontal surface 74.

[0042] The embodiments of the present application disclose a battery glue pressing mechanism.

[0043] Reference Figure 1-2The battery glue pressing mechanism includes a mounting frame 1, two sets of linear modules 2, a flat surface extrusion component 3, a step surface extrusion component 4, and a jig 5. The jig 5 is located on the side of the mounting frame 1 and is used to fix and carry the battery pack to be processed;

[0044] Two sets of linear modules 2 are fixed to the mounting frame 1, and the two sets of linear modules 2 are arranged opposite to each other up and down, and the output ends of the two sets of linear modules 2 can move toward or away from each other;

[0045] The flat surface extrusion component 3 is located below the step surface extrusion assembly 4, wherein a set of linear modules 2 is used to drive the flat surface extrusion component 3 to approach or move away from the battery pack along a direction perpendicular to the lower surface of the battery pack, so as to drive the flat surface extrusion component 3 to squeeze the tape attached to the lower surface of the battery pack;

[0046] Reference Figure 2 The step surface extrusion assembly 4 includes a first extrusion component 41 and a second extrusion component 42. The extrusion surfaces of the first extrusion component 41 and the second extrusion component 42 are parallel to each other, and the extrusion surfaces of the first extrusion component 41 and the second extrusion component 42 are not in the same plane. The first extrusion component 41 is used to extrude the tape attached to the step horizontal surface 74 of the battery pack, and the second extrusion component 42 is used to extrude the tape attached to the upper surface of the battery pack. Another set of linear modules 2 drives the step surface extrusion assembly 4 to approach or move away from the battery pack in a direction perpendicular to the upper surface of the battery pack, so as to drive the first extrusion component 41 to extrude the tape attached to the step horizontal surface 74 of the battery pack, and drive the second extrusion component 42 to extrude the tape attached to the upper surface of the battery pack, so that the flat surface extrusion component 3 and the step surface extrusion assembly 4 complete the closed extrusion of the tape wrapped around the step end surface of the battery pack, so that the tape wrapping is tighter.

[0047] Reference Figure 2 Specifically, the second extrusion component 42 extrude the tape located on the upper surface of the battery body 71 of the battery pack, the first extrusion component 41 extrude the tape located on the step horizontal surface 74, and the flat surface extrusion component 3 is used to extrude the lower surface of the battery pack that is opposite to the step horizontal surface 74.

[0048] Reference Figure 2The step surface extrusion assembly 4 also includes a connecting seat 43 and a buffer component 44. The connecting seat 43 is fixed to the output end of the corresponding linear module 2. The first extrusion component 41 is fixed to the connecting seat 43. The buffer component 44 is arranged on the connecting seat 43. The second extrusion component 42 is connected to the buffer component 44. The buffer component 44 is used to provide the second extrusion component 42 with an elastic force perpendicular to the extrusion surface of the second extrusion component 42. The linear module 2 drives the connecting seat 43 to move and drives the first extrusion component 41, the buffer component 44 and the second extrusion component 42 to move. During extrusion, the buffer component 44 provides the second extrusion component 42 with an elastic force perpendicular to the extrusion surface to play a buffering role and avoid crushing the battery pack.

[0049] Reference Figure 2 and Figure 5 The buffer component 44 includes two connecting rods 441 and two compression springs 442. The two connecting rods 441 are arranged parallel to each other. The sliding direction of the connecting rod 441 is perpendicular to the upper surface of the battery pack. The connecting rod 441 is slidably penetrated in the connecting seat 43. The second extrusion component 42 is detachably connected to the connecting rod 441. The compression spring 442 is clamped between the connecting seat 43 and the second extrusion component 42. The compression spring 442 is sleeved outside the connecting rod 441 to guide and limit the compression spring 442 to enhance the stability of the compression spring 442 during elastic deformation. When the second extrusion component 42 extrudes the battery pack, the connecting rod 441 slides up a little distance relative to the connecting seat 43, and the distance between the connecting seat 43 and the second extrusion component 42 is reduced to compress the compression spring 442 to play a buffering role. The compression spring 442 is compressed and exerts a downward elastic force on the second extrusion component 42, thereby ensuring that the second extrusion component 42 can be close to the upper surface of the battery pack to prevent the second extrusion component 42 from detaching from the battery pack.

[0050] Reference Figure 5 A countersunk hole 45 is provided on the upper surface of the second extrusion component 42, and the lower end of the connecting rod 441 is inserted into the countersunk hole 45. A locking threaded hole 46 is provided on the side of the second extrusion component 42, and the locking threaded hole 46 is connected to the countersunk hole 45. The locking threaded hole 46 is provided with a locking screw, and the end of the locking screw abuts against the side of the connecting rod 441 to lock the connecting rod 441, thereby completing the detachable fixed connection between the second extrusion component 42 and the connecting rod 441.

[0051] Reference Figure 2 The linear module 2 is a slide cylinder, and the flat surface extrusion component 3 and the step surface extrusion component 4 are respectively fixed at the output ends of the two sets of slide cylinders. The flat surface extrusion component 3 and the step surface extrusion component 4 have fast moving speed, high displacement accuracy, strong displacement controllability, stable operation, and good wear resistance. After long-term use, the displacement accuracy will not decrease significantly.

[0052] Reference Figure 3 and Figure 4 The battery glue pressing mechanism also includes two sets of stroke control components 6, which are used to limit the strokes of the two sets of linear modules 2 respectively. The two sets of stroke control components 6 are respectively connected to the two sets of linear modules 2 by electrical signals. Specifically, the forming control component is a stroke switch, which is arranged on the side of the linear module 2 to accurately control the closing position of the flat surface extrusion component 3 and the step surface extrusion component 4.

[0053] Reference Figure 2 The fixture 5 includes a bearing seat 51 and a locking assembly 53. The bearing seat 51 is provided with a limiting groove 52 for limiting the battery pack to position the battery pack. The locking assembly 53 includes a rotation cylinder 532 and a locking component 531 for pressing the battery pack in the limiting groove 52. The locking component 531 is fixed to the output end of the rotation cylinder 532. The rotation cylinder 532 drives the locking component 531 to rotate and move downward toward the battery pack until it contacts the upper surface of the battery pack, and the battery pack is fixed.

[0054] The implementation principle of the battery glue pressing mechanism of the embodiment of the present application is as follows: the battery pack is placed into the limiting groove 52 of the fixture 5, and the corner cylinder 532 works to drive the locking component 531 to rotate and move downward toward the battery pack until it contacts the upper surface of the battery pack, and the battery pack is fixed; the two groups of linear modules 2 drive the flat surface extrusion component 3 and the step surface extrusion component 4 to move toward each other until the first extrusion component 41 contacts the step horizontal surface 74 of the battery pack, the second extrusion component 42 contacts the upper surface of the battery pack, and the flat surface extrusion component 3 contacts the lower surface of the battery pack to complete the glue pressing process of the tape on the step end surface of the battery pack, so that the tape wraps more tightly. After a certain period of extrusion, the two groups of linear modules 2 drive the flat surface extrusion component 3 and the step surface extrusion component 4 to move toward each other and away from each other to complete the reset.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Battery glue pressing mechanism, characterized by: include: A fixture (5) for fixing and carrying the battery pack to be processed; A flat surface extrusion component (3) used for extruding the adhesive tape adhered to the lower surface of the battery pack; A step surface extrusion assembly (4), comprising a first extrusion component (41) and a second extrusion component (42), the extrusion surfaces of the first extrusion component (41) and the second extrusion component (42) being parallel to each other, the extrusion surfaces of the first extrusion component (41) and the second extrusion component (42) being not in the same plane, the first extrusion component (41) being used to extrude an adhesive tape adhered to a step horizontal surface (74) of a battery pack, and the second extrusion component (42) being used to extrude an adhesive tape adhered to an upper surface of the battery pack; Two groups of linear modules (2), one group of linear modules (2) is used to drive the flat surface extrusion component (3) to approach or move away from the battery pack along a direction perpendicular to the lower surface of the battery pack, and the other group of linear modules (2) is used to drive the step surface extrusion component (4) to approach or move away from the battery pack along a direction perpendicular to the upper surface of the battery pack.

2. The battery glue pressing mechanism according to claim 1, characterized in that: The step surface extrusion assembly (4) further comprises a connecting seat (43) and a buffer component (44); the connecting seat (43) is fixed to the output end of the corresponding linear module (2); the first extrusion component (41) is fixed to the connecting seat (43); the buffer component (44) is arranged on the connecting seat (43); the second extrusion component (42) is connected to the buffer component (44); the buffer component (44) is used to provide the second extrusion component (42) with an elastic force perpendicular to the extrusion surface of the second extrusion component (42).

3. The battery glue pressing mechanism according to claim 2, characterized in that: The buffer component (44) comprises a connecting rod (441) and a compression spring (442); the connecting rod (441) is slidably inserted into the connecting seat (43); the second extrusion component (42) is detachably connected to the connecting rod (441); and the compression spring (442) is clamped between the connecting seat (43) and the second extrusion component (42).

4. The battery glue pressing mechanism according to claim 3, characterized in that: The compression spring (442) is sleeved outside the connecting rod (441).

5. The battery glue pressing mechanism according to claim 3, characterized in that: A countersunk hole (45) is provided on the upper surface of the second extrusion component (42), and a locking threaded hole (46) is provided on the side of the second extrusion component (42). The locking threaded hole (46) is connected to the countersunk hole (45), and a locking screw is provided in the locking threaded hole (46). The lower end of the connecting rod (441) is inserted into the countersunk hole (45), and the end of the locking screw abuts against the side of the connecting rod (441).

6. The battery glue pressing mechanism according to claim 3, characterized in that: There are two connecting rods (441), and there are two corresponding compression springs (442). The two connecting rods (441) are arranged parallel to each other, and the sliding direction of the connecting rods (441) is perpendicular to the upper surface of the battery pack.

7. The battery glue pressing mechanism according to claim 1, characterized in that: The linear module (2) is a slide cylinder, and the flat surface extrusion component (3) and the step surface extrusion assembly (4) are respectively fixed to the output ends of two groups of slide cylinders.

8. The battery glue pressing mechanism according to claim 7, characterized in that: The battery glue pressing mechanism also includes two groups of stroke control components (6), the two groups of stroke control components (6) are respectively used to limit the strokes of the two groups of linear modules (2), and the two groups of stroke control components (6) are respectively connected to the two groups of linear modules (2) by electrical signals.

9. The battery glue pressing mechanism according to claim 8, characterized in that: The travel control component is a travel switch, and the travel switch is arranged on the side of the linear module (2).

10. The battery glue pressing mechanism according to claim 1, characterized in that: The fixture (5) comprises a bearing seat (51) and a locking assembly (53); the bearing seat (51) is provided with a limiting groove (52) for limiting the position of the battery pack; the locking assembly (53) comprises a rotation cylinder (532) and a locking component (531) for pressing the battery pack in the limiting groove (52); the locking component (531) is fixed to the output end of the rotation cylinder (532).

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