Film tearing device for square aluminum shell film-pasted battery

Abstract

The utility model provides a square aluminum shell film pasting battery film tearing device which comprises a machine table, a battery transferring mechanism, a battery heating mechanism and a film tearing mechanism, the machine table is provided with a feeding and discharging position, a heating position and a film tearing position, and the battery transferring mechanism is used for horizontally feeding a film pasting battery among the feeding and discharging position, the heating position and the film tearing position. The battery heating mechanism is used for firstly heating solidified mucilage glue on the back face of the insulating film to enable the solidified mucilage glue to fall off from the surface of the battery easily, film tearing is facilitated, the insulating film is prevented from being snapped, the film tearing mechanism is used for upwards pulling the top edge or the side edge or the bottom edge of the insulating film strip to tear the film, and the pulling force direction can be perpendicular to the surface of the insulating film to facilitate film tearing.

Description

Technical Field

[0001] The utility model belongs to the technical field of square aluminum shell battery manufacturing equipment, in particular to a film tearing device for square aluminum shell film batteries. Background Art

[0002] Please see Figure 1 According to the posture of the square aluminum shell battery (hereinafter referred to as the battery) tilted with the liquid filling port facing forward, the bare cell 11 includes six external surfaces, namely the battery top surface 111, the battery bottom surface (not marked), the battery left large surface 112, the battery right large surface (not marked), the battery front side surface (not marked), and the battery rear side surface 113. During the battery manufacturing process, it is necessary to cover the six external surfaces of the metal shell of the bare cell with an insulating film to make the bare cell 11 a coated battery to play the role of electrical insulation, as well as anti-corrosion and decoration. The industry calls it a battery film.

[0003] The insulating film is made of polyethylene terephthalate (PET for short), which is generally 0.08 to 0.15 mm thick. The insulating film has excellent insulation, high temperature resistance, flame retardancy, heat dissipation and tensile rigidity. An adhesive is provided on the back of the insulating film for bonding to the surface of the bare cell 11. The adhesive is one or more of the polymer adhesives polyvinylidene fluoride-hexafluoropropylene copolymer, polyvinylidene fluoride, polymethyl methacrylate, polyethylene oxide, polyacrylonitrile, polystyrene, polyvinyl acetate, polyvinyl pyrrolidone, and polyurethane, and is as thick as 0.01 to 0.05 mm. The adhesive can be accelerated to solidify when exposed to ultraviolet light (UV). After solidification, it has excellent insulation, wear resistance, weather resistance, folding edge, flame retardancy, and heat dissipation. The adhesive strength of the adhesive can reach 1.5 to 7 MPa at room temperature. The solidified adhesive will soften when heated to a certain temperature, thereby reducing the adhesive strength, which is conducive to tearing the film.

[0004] Generally, the insulating film is made into a film tape and supplied in rolls, which are cut into insulating film strips before or during the coating process. For example, the battery type II coating method is shown in Figure 1 First, apply a strip of insulating film 12 to the left large surface 112 and the right large surface (not shown) of the battery to obtain a film-coated battery 10. The principle of applying the film strip 12 and the bare battery 11 is to use relative movement to make the adhesive surface of the insulating film strip 12 linearly contact the surface of the bare battery 11 while simultaneously rolling and pressing it tightly together. This process is repeated continuously to obtain a paved surface. The requirements for battery paving are:

[0005] (1) During the laying process, the insulation film tension is 1.5±0.5kgf and the film pressure is 15±5kgf;

[0006] (2) There should be no glue peeling, bubbles, wrinkles, scratches or dirt after paving;

[0007] (3) After laying, the position accuracy of the edge of the insulating film strip 12 and the interface of the battery 11 is ±1mm.

[0008] Subsequently, the side edges 1213 of the insulating film strip extending from the left large surface 112 and the right large surface (not marked) of the film-coated battery 10 beyond the front side (not marked) and the rear side 113 of the battery are folded and affixed to the front side (not marked) and the rear side 113 of the battery, and then the bottom edge 1212 of the insulating film strip extending from the bottom surface (not marked) of the battery is folded and affixed to the bottom surface (not marked) of the battery, and finally the top edge 1211 of the insulating film strip extending from the top surface (111) of the battery is folded and affixed to the top surface 111 of the battery, to obtain a film-coated battery. The requirements for the battery film are:

[0009] (1) During the laying and folding process, the insulation film tension is 1.5±0.5kgf and the film pressure is 15±5kgf;

[0010] (2) There shall be no peeling of glue, bubbles, wrinkles, corners, warping, scratches or dirt after laying and folding;

[0011] (3) After laying and folding, if the edges of the insulating film strips 12 overlap, the overlap size shall be ≥ 4 mm;

[0012] (4) The size of the bare cell 11 is not significantly increased after laying and folding.

[0013] For unqualified film batteries 10 and wrapped batteries in the process, rework is required to tear off the film and re-apply the film. For the wrapped battery, the folded surface can be peeled off in a variety of ways to return the wrapped battery to the film battery 10 state. For tearing off the film of the film battery 10, we have developed a square aluminum shell film battery tearing device.

[0014] Battery film removal requirements:

[0015] 1. Heating temperature ≤ 80℃;

[0016] 2. The battery is not deformed;

[0017] 3. Do not damage the battery surface. Utility Model Content

[0018] The purpose of the utility model is to provide a film-tearing device for a square aluminum shell film battery, which is used for tearing the film of the film battery.

[0019] The utility model is realized as follows: a square aluminum shell film battery tearing device, comprising:

[0020] The machine has loading and unloading positions and heating positions at both ends, and a film tearing position in the middle;

[0021] A battery transfer mechanism is fixed on the machine platform and is used to feed the film-coated batteries from the upper and lower material positions to the heating position for heating the insulating film, and to feed the heated film-coated batteries from the heating position to the film-tearing position for film-tearing, and to continue feeding the bare batteries after film-tearing to the upper and lower material positions;

[0022] A battery heating mechanism is fixed on the machine platform and located at the heating position, and is used to heat the insulating film strips attached to the film-attached battery;

[0023] The film tearing mechanism is fixed on the battery heating mechanism and is located at the film tearing position, and is used to tear off the insulating film strips attached to the heating film battery.

[0024] Furthermore, the battery transfer mechanism includes a linear module, a battery clamp, a sensor and a sensor sheet. The linear module is fixed on the machine platform, crossing the upper and lower material positions, the heating position and the film tearing position. The battery clamp is fixed on the output end of the linear module. The sensor or the sensor sheet is fixed outside one end of the linear module and is located at the heating position. The sensor sheet or the sensor is correspondingly fixed outside the battery clamp. The linear module is used to drive the battery clamp with the film to move between the upper and lower material positions, the heating position and the film tearing position. The sensor and the sensor sheet are used together to position the battery clamp and the film battery it carries to stay at the heating position for heating the insulating film strip attached to the film battery.

[0025] Furthermore, the battery heating mechanism includes four guide pillars, four guide sleeves, a top plate, a heating lifting driver, a heating slide, a heating component and four limiting members, the lower ends of the four guide pillars are fixed on the machine platform, the four guide sleeves are slidably arranged outside the four guide pillars, the top plate is fixed on the upper ends of the four guide pillars, the heating lifting driver is fixed vertically downward on the top plate, the heating slide is fixed under the output end of the heating lifting driver and fixed outside the four guide sleeves, the heating component is fixed under the heating slide, the heating lifting driver is used to drive the heating slide to carry the heating component down along the guide pillars so that the heating component sticks to the film battery carried by the battery clamp that is stationary in the heating position to heat the insulating film strip attached to the film battery, and the four limiting members are respectively fixed on the lower parts of the four guide pillars, for positioning the lower ends of the four guide sleeves, thereby positioning the heating component carried by the heating slide to a preset position to prevent the film battery from being crushed.

[0026] Furthermore, the heating assembly includes a heat insulation plate, a heating plate, a heat transfer plate and a pad. The heat insulation plate is fixed under the heating slide, the heating plate is fixed under the heat insulation plate, the heat transfer plate is fixed under the heating plate, and the pad is fixed under the heat transfer plate. The heat generated by the heating plate is transferred to the heat transfer plate, and the heat transfer plate transfers the heat to the insulating film strip attached to the film battery through contact. The pad is used to protect the film battery from being crushed.

[0027] Furthermore, the battery film tearing mechanism includes a film tearing bracket, a film tearing lifting drive, a film tearing sliding group, a film tearing slide, a film tearing clamp drive bracket, a film tearing clamp drive and a film tearing clamp, the film tearing bracket is fixed on the top plate of the battery heating mechanism, the film tearing lifting drive and the slide rails of the film tearing sliding group are vertically fixed on the film tearing bracket, the film tearing slide is fixed under the output end of the film tearing lifting drive and on the slider of the film tearing sliding group, the film tearing clamp drive bracket is fixed on the film tearing slide, the film tearing clamp drive bracket is fixed on the film tearing clamp drive bracket, and the film tearing clamp is fixed under the output end of the film tearing clamp drive for clamping the insulating film strip attached to the film-attached battery; the film tearing lifting drive is used to drive the film tearing slide to carry the film tearing clamp drive bracket together with the film tearing clamp drive and the film tearing clamp to descend to clamp the insulating film strip attached to the film-attached battery and then rise to tear the film.

[0028] The beneficial effects of the present square aluminum shell film battery tearing device are as follows: the battery transfer mechanism can deliver the film battery horizontally; the battery heating mechanism can first heat the solidified adhesive on the back of the insulating film to soften it and make it easy to fall off from the battery surface, thereby facilitating film tearing and avoiding pulling off the insulating film; the film tearing mechanism can pull up the insulating film strip to tear the film at the top, side or bottom eaves, and the pulling direction can be perpendicular to the insulating film surface to facilitate film tearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of a film battery;

[0030] Figure 2 Structural diagram of the film-tearing device for square aluminum-shell coated batteries;

[0031] Figure 3 Transfer mechanism structure diagram;

[0032] Figure 4 Structural diagram of heating mechanism and film tearing mechanism;

[0033] Figure 5 Heating mechanism structure diagram;

[0034] Figure 6 Film tearing mechanism structure diagram.

[0035] Description of reference numerals:

[0036] 10. Film-coated battery; 11. Bare cell; 111. Top surface of battery; 112. Left large surface of battery; 113. Rear side of battery; 12. Insulating film strip; 1211. Top edge of insulating film strip; 1212. Bottom edge of insulating film strip; 1213. Side edge of insulating film strip;

[0037] 20. Machine table; 21. Loading and unloading position; 22. Heating position; 23. Film tearing position;

[0038] 30. Battery transfer mechanism; 31. Linear module; 32. Battery fixture; 33. Sensor; 34. Sensor plate; 40. Battery heating mechanism; 41. Guide pillar; 42. Guide sleeve; 43. Top plate; 44. Heating lift actuator; 45. Heating slide; 46. Heating assembly; 461. Heat insulation plate; 462. Heating plate; 463. Heat transfer plate; 464. Pad; 47. Limiter;

[0039] 50. Film tearing mechanism; 51. Film tearing bracket; 52. Film tearing lifting drive; 53. Film tearing slide group; 54. Film tearing slide; 55. Film tearing clamp drive bracket; 56. Film tearing clamp drive; 57. Film tearing clamp. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For those skilled in the art, the specific meanings of the terms in the present invention can be understood according to the specific circumstances.

[0042] See also Figure 2 and Figure 4This embodiment provides a square aluminum shell film battery tearing device for tearing the film of the film battery 10, comprising:

[0043] The machine 20 has loading and unloading positions 21 and a heating position 22 at both ends, and a film tearing position 23 in the middle;

[0044] The battery transfer mechanism 30 is fixed on the machine platform 20 and is used to feed the film-coated batteries 10 from the upper and lower material positions 21 to the heating position 22 for heating the insulating film, and to feed the heated film-coated batteries 10 from the heating position 22 to the film-tearing position 23 for film-tearing, and to continue feeding the bare batteries 11 after film-tearing to the upper and lower material positions 21;

[0045] The battery heating mechanism 40 is fixed on the machine 20 and located at the heating position 22, and is used to heat the insulating film strip 12 attached to the film-attached battery 10;

[0046] The film tearing mechanism 50 is fixed on the battery heating mechanism 40 and is located at the film tearing position 23 for tearing off the insulating film strip 12 attached to the heating film battery 10 .

[0047] Further, see Figure 2 and Figure 3 The battery transfer mechanism 30 includes a linear module 31, a battery clamp 32, a sensor 33 and a sensor sheet 34. The linear module 31 is fixed on the machine 20, crossing the upper and lower material positions 21, the heating position 22, and the film tearing position 23. The battery clamp 32 is fixed on the output end of the linear module 31. The sensor 33 or the sensor sheet 34 is fixed outside one end of the linear module 31 and is located at the heating position 22. The sensor sheet 34 or the sensor 33 is correspondingly fixed outside the battery clamp 32. The linear module 31 is used to drive the battery clamp 32 to move with the film-attached battery 10 between the upper and lower material positions 21, the heating position 22, and the film tearing position 23. The sensor 33 and the sensor sheet 34 are used to cooperate to position the battery clamp 32 and the film-attached battery 10 it carries to stay at the heating position 22 for heating the insulating film strip 12 attached to the film-attached battery 10.

[0048] Further, see Figure 5The battery heating mechanism 40 includes four guide pillars 41, four guide sleeves 42, a top plate 43, a heating lifting driver 44, a heating slide 45, a heating component 46 and four limiters 47. The lower ends of the four guide pillars 41 are fixed on the machine 20, the four guide sleeves 42 are slidably arranged outside the four guide pillars 41, the top plate 43 is fixed to the upper ends of the four guide pillars 41, the heating lifting driver 44 is fixed vertically downward on the top plate 43, the heating slide 45 is fixed under the output end of the heating lifting driver 44, and is fixed outside the four guide sleeves 42. The thermal component 46 is fixed under the heating slide 45, and the heating lifting driver 44 is used to drive the heating slide 45 to lower the heating component 46 along the guide column 41 so that the heating component 46 can stick to the film battery 10 carried by the battery clamp 32 that is resting on the heating position 22 to heat the insulating film strip 12 attached to the film battery 10. The four limit members 47 are respectively fixed to the lower part of the four guide columns 41, and are used to position the lower ends of the four guide sleeves 42, thereby positioning the preset position for the heating component 46 carried by the heating slide 45 to be lowered to prevent the film battery 10 from being crushed.

[0049] Further, see Figure 5 The heating assembly 46 includes a heat insulation plate 461, a heating plate 462, a heat transfer plate 463 and a pad 464. The heat insulation plate 461 is fixed under the heating slide 45, the heating plate 462 is fixed under the heat insulation plate 461, the heat transfer plate 463 is fixed under the heating plate 462, and the pad 464 is fixed under the heat transfer plate 463. The heat generated by the heating plate 462 is transferred to the heat transfer plate 463, and the heat transfer plate 463 transfers the heat to the insulating film strip 12 attached to the film battery 10. The pad 464 is used to protect the film battery 10 from being crushed.

[0050] Further, see Figure 6 The battery film tearing mechanism 50 includes a film tearing bracket 51, a film tearing lifting driver 52, a film tearing slide group 53, a film tearing slide plate 54, a film tearing clamp driver bracket 55, a film tearing clamp driver 56 and a film tearing clamp 57. The film tearing bracket 51 is fixed on the top plate 43 of the battery heating mechanism 40, the slide rails of the film tearing lifting driver 52 and the film tearing slide group 53 are vertically fixed on the film tearing bracket 51, the film tearing slide plate 54 is fixed under the output end of the film tearing lifting driver 52 and on the slider of the film tearing slide group 53, and the film tearing The clamp driver bracket 55 is fixed on the film tearing slide 54, the film tearing clamp driver 56 is fixed on the film tearing clamp driver bracket 55, and the film tearing clamp 57 is fixed under the output end of the film tearing clamp driver 56, and is used to clamp the insulating film strip 12 attached to the film-attached battery 10; the film tearing lifting driver 52 is used to drive the film tearing slide 54 to carry the film tearing clamp driver bracket 55 together with the film tearing clamp driver 56 and the film tearing clamp 57 to descend to clamp the insulating film strip 12 attached to the film-attached battery 10 and then rise to tear the film.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A square aluminum shell film battery tearing device, used for tearing the film of a film battery (10), characterized by comprising: The machine (20) has upper and lower material positions (21) and a heating position (22) at both ends, and a film tearing position (23) in the middle; A battery transfer mechanism (30) is fixed on the machine (20) and is used to feed the film-attached battery (10) from the upper and lower material positions (21) to the heating position (22) for heating the insulating film, and to feed the heated film-attached battery (10) from the heating position (22) to the film-tearing position (23) for film-tearing, and to continue feeding the bare battery (11) after film-tearing to the upper and lower material positions (21); A battery heating mechanism (40) is fixed on the machine (20) and is located at the heating position (22), and is used to heat the insulating film strip (12) attached to the film-attached battery (10); The film tearing mechanism (50) is fixed on the battery heating mechanism (40) and is located at the film tearing position (23), and is used to tear off the insulating film strip (12) attached to the heating film battery (10).

2. The square aluminum shell film battery tearing device according to claim 1 is characterized in that: The battery transfer mechanism (30) includes a linear module (31), a battery clamp (32), a sensor (33) and a sensor sheet (34). The linear module (31) is fixed on the machine (20), crossing the upper and lower material positions (21), the heating position (22) and the film tearing position (23), the battery clamp (32) is fixed on the output end of the linear module (31), the sensor (33) or the sensor sheet (34) is fixed outside one end of the linear module (31), located at the heating position (22), the sensor sheet (34) or the sensor (33) is correspondingly fixed outside the battery clamp (32), the linear module (31) is used to drive the battery clamp (32) with the film battery (10) to move between the upper and lower material positions (21), the heating position (22), and the film tearing position (23), the sensor (33) and the sensor sheet (34) are used to cooperate to position the battery clamp (32) and the film battery (10) it carries to stay at the heating position (22) for heating the insulating film strip (12) attached to the film battery (10).

3. The square aluminum shell film battery tearing device according to claim 2 is characterized in that: The battery heating mechanism (40) includes four guide pillars (41), four guide sleeves (42), a top plate (43), a heating lifting driver (44), a heating slide plate (45), a heating component (46) and four limit members (47). The lower ends of the four guide pillars (41) are fixed on the machine (20), the four guide sleeves (42) are slidably arranged outside the four guide pillars (41), the top plate (43) is fixed on the upper ends of the four guide pillars (41), the heating lifting driver (44) is fixed vertically downward on the top plate (43), the heating slide plate (45) is fixed under the output end of the heating lifting driver (44) and fixed outside the four guide sleeves (42), the heating The heat component (46) is fixed under the heating slide (45), and the heating lifting driver (44) is used to drive the heating slide (45) to lower the heating component (46) along the guide column (41) so that the heating component (46) sticks to the film battery (10) carried by the battery clamp (32) resting at the heating position (22) to heat the insulating film strip (12) attached to the film battery (10). The four limiting members (47) are respectively fixed to the lower parts of the four guide columns (41) and are used to position the lower ends of the four guide sleeves (42) so as to position the preset position for lowering the heating component (46) carried by the heating slide (45) to prevent the film battery (10) from being crushed.

4. The square aluminum shell film battery tearing device according to claim 3 is characterized in that: The heating assembly (46) includes a heat insulating plate (461), a heating plate (462), a heat transfer plate (463) and a pad (464), wherein the heat insulating plate (461) is fixed under the heating slide plate (45), the heating plate (462) is fixed under the heat insulating plate (461), the heat transfer plate (463) is fixed under the heating plate (462), and the pad (464) is fixed under the heat transfer plate (463). The heat generated by the heating plate (462) is transferred to the heat transfer plate (463), and the heat transfer plate (463) transfers the heat to the insulating film strip (12) attached to the film battery (10) through contact, and the pad (464) is used to protect the film battery (10) from being crushed.

5. The square aluminum shell film battery tearing device according to claim 3 is characterized in that: The battery film tearing mechanism (50) includes a film tearing bracket (51), a film tearing lifting driver (52), a film tearing slide group (53), a film tearing slide plate (54), a film tearing clamp driver bracket (55), a film tearing clamp driver (56) and a film tearing clamp (57), wherein the film tearing bracket (51) is fixed on the top plate (43) of the battery heating mechanism (40), the slide rails of the film tearing lifting driver (52) and the film tearing slide group (53) are vertically fixed on the film tearing bracket (51), the film tearing slide plate (54) is fixed under the output end of the film tearing lifting driver (52) and on the slide block of the film tearing slide group (53), and the film tearing clamp driver bracket (55) is fixed on the top plate (43) of the battery heating mechanism (40). The film tearing clamp driver bracket (55) is fixed on the film tearing slide (54), the film tearing clamp driver (56) is fixed on the film tearing clamp driver bracket (55), and the film tearing clamp (57) is fixed under the output end of the film tearing clamp driver (56) to clamp the insulating film strip (12) attached to the film-attached battery (10); the film tearing lifting driver (52) is used to drive the film tearing slide (54) to carry the film tearing clamp driver bracket (55) together with the film tearing clamp driver (56) and the film tearing clamp (57) to descend to clamp the insulating film strip (12) attached to the film-attached battery (10) and then rise to tear the film.

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