Lithium ion battery diaphragm roll changing equipment

Abstract

The utility model relates to the field of square aluminum shell lithium ion batteries, in particular to lithium ion battery diaphragm roll changing equipment. The embodiment of the utility model provides lithium ion battery diaphragm roll changing equipment, which comprises two air expansion shafts, a roll changing device, a roll changing device and a roll changing device, wherein the two air expansion shafts are suitable for placing diaphragm rolls; the hot melting piece is suitable for being connected with the diaphragm rolls on the two inflatable shafts in a hot melting manner; the cutting mechanism is arranged between the two air expansion shafts and the hot melting piece; and when the diaphragm roll on any one of the inflatable shafts is used up, the hot melting piece is connected with the diaphragm rolls of the two inflatable shafts in a hot melting manner, and the cutting mechanism cuts off the used diaphragm roll. The diaphragm rolls on the two air expansion shafts are fused and bonded through the hot melting piece, and then the used diaphragm rolls are cut off through the cutting mechanism, so that the effect of automatic diaphragm roll replacement is achieved, the roll replacement efficiency is improved, and the roll replacement success rate is greatly increased.

Description

Technical Field

[0001] The utility model relates to the field of square aluminum shell lithium ion batteries, in particular to lithium ion battery diaphragm roll changing equipment. Background Art

[0002] At present, in the square aluminum shell lithium-ion battery industry, the winding process uses diaphragms as raw materials to isolate the anode and cathode to prevent short circuits. In the normal winding process, the diaphragms are placed in the form of material rolls on a spare buffer rack for manual cutting, gluing and rewinding by operators to complete the sustainable production of winding. The low efficiency of manual cutting and rewinding is an urgent problem to be solved. Utility Model Content

[0003] The utility model aims to provide a lithium ion battery diaphragm roll changing device to solve the above problems.

[0004] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides a lithium-ion battery diaphragm roll changing device, comprising: two inflatable shafts, on which the diaphragm roll is suitable for being placed;

[0005] A hot melt component, wherein the hot melt component is suitable for hot melting and connecting the diaphragm rolls on the two inflatable shafts;

[0006] A cutting mechanism, wherein the cutting mechanism is arranged between the two inflatable shafts and the hot melt component; wherein

[0007] When the diaphragm roll on any of the inflatable shafts is used up, the hot melt component hot melts and connects the diaphragm rolls of the two inflatable shafts, and the cutting mechanism cuts off the used diaphragm roll.

[0008] Furthermore, the cutting mechanism includes two cutting components, which are respectively arranged on one side of the two inflatable shafts, and the cutting ends of the cutting components are oriented toward the diaphragm roll corresponding to the inflatable shafts.

[0009] Furthermore, the cutting assembly comprises a knife seat and a cylinder, the movable end of the cylinder is connected to the knife seat, and the knife seat has a retractable hot cutting knife on a side facing the diaphragm roll.

[0010] Furthermore, the cutting end of the cutting assembly has a negative pressure adsorption port;

[0011] The cutting assembly is provided with a cutter dust removal port, and the cutter dust removal port is communicated with the negative pressure adsorption port.

[0012] Furthermore, the hot melt component is a femtosecond pulse laser.

[0013] Furthermore, a clamping assembly is provided on one side of the hot melt component, and the clamping assembly is separately provided on both sides of the two diaphragm rolls.

[0014] Furthermore, the clamping assembly includes a pressing plate, a cylinder and a protective cover plate, and the pressing plate and the protective cover plate are respectively located on both sides of the two diaphragm rolls;

[0015] The movable end of the cylinder is connected to the pressure plate, and the movable end of the cylinder is arranged toward the protective cover plate.

[0016] Furthermore, the pressing plate is provided with a plurality of negative pressure holes;

[0017] The pressing plate has a vacuum pipeline inside.

[0018] Furthermore, two rollers are respectively arranged between the two inflatable shafts and the cutting mechanism.

[0019] Furthermore, a movable rubber pressure roller is respectively arranged on one side of the two rollers, and a cylinder is arranged on one side of the rubber pressure roller, and the movable end of the cylinder is arranged toward the roller.

[0020] Compared with the prior art, the embodiments of the utility model have the following beneficial effects: the diaphragm rolls on the two inflatable shafts are melted and bonded by a hot melt component and then the used diaphragm rolls are cut off by a cutting mechanism to achieve the effect of automatic diaphragm roll replacement, improve the roll replacement efficiency, and greatly improve the roll replacement success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 The schematic diagram of the structure of the lithium-ion battery separator roll changing device of the utility model is shown;

[0023] Figure 2 The schematic diagram of the structure of the rubber pressure roller of the utility model is shown;

[0024] Figure 3 The schematic diagram of the structure of the cutting mechanism of the utility model is shown;

[0025] Figure 4 The schematic diagram of the structure of the clamping assembly of the utility model is shown.

[0026] In the figure:

[0027] 1. Inflatable shaft; 2. Hot melt parts;

[0028] 3. Cutting mechanism; 31. Knife holder; 33. Telescopic hot cutting knife; 34. Knife dust removal port;

[0029] 4. Clamping assembly; 41. Pressing plate; 43. Protective cover plate; 44. Negative pressure hole;

[0030] 5. Passing roller; 51. Rubber pressure roller. DETAILED DESCRIPTION

[0031] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0032] In the square aluminum shell lithium-ion battery industry, the winding process uses diaphragms as raw materials to isolate the anode and cathode to prevent short circuits. In the normal winding process, the diaphragms are placed in the form of material rolls on a spare buffer rack for manual cutting, gluing and rewinding by operators to complete the sustainable production of winding. Manual cutting and rewinding are inefficient.

[0033] In order to solve the above problems, at least one embodiment provides a lithium-ion battery diaphragm roll replacement device, including: two inflatable shafts 1, hot melt parts 2 and cutting mechanisms 3, and the two inflatable shafts 1 can be respectively placed with diaphragm rolls. The hot melt parts 2 are suitable for hot-melting the diaphragm rolls on the two inflatable shafts 1. The cutting mechanism 3 is arranged between the two inflatable shafts 1 and the hot melt parts 2. Through the above arrangement, when in use, the diaphragm roll on any inflatable shaft 1 is first used. When the diaphragm roll is used up, the free end of the diaphragm roll on the other inflatable shaft 1 is pulled to one side of the hot melt parts 2. The used diaphragm roll is recorded as the old film roll, and the complete diaphragm roll is recorded as the new film roll. The hot melt parts 2 hot-melt the two diaphragm rolls so that the old film roll and the new film roll are connected. Then the cutting mechanism 3 cuts off the old film roll. At this time, the conveying of the diaphragm roll is switched from the old film roll to the new film roll, and then the used diaphragm roll on the inflatable shaft 1 is replaced with a brand new diaphragm roll. After the diaphragm roll on the other inflatable shaft 1 is used up, the above process is fully performed. The effect of continuous production can be achieved.

[0034] Since the diaphragm rolls on the two inflatable shafts 1 are used alternately, in some embodiments, the cutting mechanism 3 includes two cutting components, which are respectively arranged on one side of the two inflatable shafts 1, and the cutting ends of the cutting components face the diaphragm rolls corresponding to the inflatable shafts 1. When the diaphragm roll on any inflatable shaft 1 is used up, the cutting component at the corresponding position can cut off the diaphragm roll.

[0035] In some embodiments, the cutting assembly includes a knife seat 31 and a cylinder, the movable end of the cylinder is connected to the knife seat 31, and the knife seat 31 has a retractable hot cutter 33 on the side facing the diaphragm roll. The retractable hot cutter 33 can extend out of the knife seat 31, or retract into the knife seat 31, and the diaphragm is cut by the hot cutter, which is fast, complete incision, and better cutting effect. At the same time, the cutting end of the cutting assembly has a negative pressure adsorption port. The cutting assembly is provided with a knife dust removal port 34, and the knife dust removal port 34 is connected to the negative pressure adsorption port. The knife dust removal port 34 is suitable for an external air pump. After the retractable hot cutter 33 cuts the diaphragm, the retractable hot cutter 33 retracts into the knife seat 31, and the air pump drives the knife dust removal port 34 to inhale air, so that the negative pressure adsorption port is opened, and the dust on the diaphragm is adsorbed to ensure the cleanliness requirements of the working environment.

[0036] In order to achieve the effect of connecting the new and old rolls of diaphragms by the hot melt component 2, in some embodiments, the hot melt component 2 is a femtosecond pulse laser. The micro-heat femtosecond laser performs non-contact heating to achieve the melting connection of the two layers of diaphragms.

[0037] In order to ensure that the new and old diaphragm rolls fit tightly together when the hot melt component 2 is used to hot-melt the two diaphragm rolls, a clamping assembly 4 is provided on one side of the hot melt component 2, and the clamping assembly 4 is separately provided on both sides of the two diaphragm rolls. The clamping assembly 4 includes a pressing plate 41, a cylinder and a protective cover plate 43, and the pressing plate 41 and the protective cover plate 43 are respectively located on both sides of the two diaphragm rolls. The movable end of the cylinder is connected to the pressing plate 41, and the movable end of the cylinder is arranged toward the protective cover plate 43. When the new film roll and the old film roll are located between the pressing plate 41 and the protective cover plate 43, the cylinder drives the pressing plate 41 to move toward the protective cover plate 43, thereby pressing the new film roll and the old film roll, and then the hot melt component 2 hot-melts the two pressed diaphragm rolls through the protective cover plate 43.

[0038] In some embodiments, since the old film roll is still in the process of being transported when it is used up, the old film roll is in a tensioned state, and the new film roll is in a free state before being connected to the old film roll. In order to avoid the phenomenon of the new film roll having a streamer, a plurality of negative pressure holes 44 are opened on the pressing plate 41, and a vacuum pipe is provided inside the pressing plate 41. After the free end of the new film roll is pulled to one side of the pressing plate 41 and attached, the air pump drives the vacuum pipe to suck air, thereby adsorbing the free end of the new film roll on the pressing plate 41.

[0039] In order to guide the conveying direction of the diaphragm roll on the two inflatable shafts 1, two rollers 5 are respectively arranged between the two inflatable shafts 1 and the cutting mechanism 3.

[0040] In some embodiments, in order to further prevent the diaphragm roll from running when the air shaft 1 is cut, a movable rubber pressure roller 51 is respectively provided on one side of the two rollers 5, and a cylinder is provided on one side of the rubber pressure roller 51, and the movable end of the cylinder is arranged toward the roller 5. When the new film roll and the old film roll are hot-melt connected, the cylinder drives the rubber pressure roller 51 to press the diaphragm roll onto the roller 5.

[0041] It is worth mentioning that the technical features such as other components involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field and should not be regarded as the invention point of this utility model patent. This utility model patent will not be further elaborated.

[0042] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lithium-ion battery separator roll changing device, characterized in that: include: Two inflatable shafts (1), the two inflatable shafts (1) being suitable for placing a diaphragm roll; A hot melt component (2), wherein the hot melt component (2) is suitable for hot-melting and connecting the diaphragm rolls on the two inflatable shafts (1); A cutting mechanism (3), wherein the cutting mechanism (3) is arranged between the two inflatable shafts (1) and the hot melt component (2); wherein When the diaphragm roll on any of the inflatable shafts (1) is used up, the hot melt component (2) hot melts and connects the diaphragm rolls of the two inflatable shafts (1), and the cutting mechanism (3) cuts off the used diaphragm roll.

2. The roll changing device according to claim 1, characterized in that: The cutting mechanism (3) comprises two cutting assemblies, the two cutting assemblies are respectively arranged on one side of the two inflatable shafts (1), and the cutting ends of the cutting assemblies face the diaphragm rolls corresponding to the inflatable shafts (1).

3. The roll changing device according to claim 2, characterized in that: The cutting assembly comprises a knife seat (31) and a cylinder, wherein the movable end of the cylinder is connected to the knife seat (31), and the knife seat (31) has a telescopic hot cutting knife (33) on a side facing the diaphragm roll.

4. The roll changing device according to claim 2, characterized in that: The cutting end of the cutting assembly has a negative pressure adsorption port; The cutting assembly is provided with a cutter dust removal port (34), and the cutter dust removal port (34) is communicated with the negative pressure adsorption port.

5. The roll changing device according to claim 1, characterized in that: The hot melt component (2) is a femtosecond pulse laser.

6. The roll changing device according to claim 1, characterized in that: A clamping assembly (4) is provided on one side of the hot melt component (2), and the clamping assembly (4) is separately provided on both sides of the two diaphragm rolls.

7. The roll changing device according to claim 6, characterized in that: The pressing assembly (4) comprises a pressing plate (41), a cylinder and a protective cover plate (43), wherein the pressing plate (41) and the protective cover plate (43) are respectively located on two sides of the two diaphragm rolls; The movable end of the cylinder is connected to the pressing plate (41), and the movable end of the cylinder is arranged toward the protective cover plate (43).

8. The roll changing device according to claim 7, characterized in that: The pressing plate (41) is provided with a plurality of negative pressure holes (44); The pressing plate (41) has a vacuum pipe inside.

9. The roll changing device according to claim 1, characterized in that: Two rollers (5) are respectively arranged between the two inflatable shafts (1) and the cutting mechanism (3).

10. The roll changing device according to claim 9, characterized in that: A movably arranged rubber pressure roller (51) is respectively arranged on one side of the two passing rollers (5), and a cylinder is arranged on one side of the rubber pressure roller (51), wherein the movable end of the cylinder is arranged toward the passing roller (5).

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