Tool for improving quality of lithium battery diaphragm

Abstract

The utility model discloses a tool for improving the quality of lithium battery diaphragm, which comprises a rod body for penetrating a tube core, one end of the rod body is fixedly provided with a fixing plate, one side of the fixing plate far away from the rod body is provided with a first holding part, the other end of the rod body is detachably connected with a limiting plate, and the limiting plate is provided with a second holding part. A second holding part is arranged on one side, far away from the rod body, of the limiting plate; the device has the advantages that the wound battery diaphragm is prevented from being unwound, and the product quality of the battery diaphragm is favorably guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery separators, in particular to a tool for improving the quality of lithium battery separators. Background Art

[0002] The battery separator is a crucial component in batteries, used to separate the electrolyte between the positive and negative electrodes to prevent short circuits and direct contact between the electrodes, while also allowing ions to flow between the two electrodes. Separators are typically made of polymer materials that have good chemical resistance and thermal stability.

[0003] During packaging, shipment, or transportation, battery separators are typically wound around a tube core. Because the surface of the separator is very smooth and has low friction, unwinding is a problem. To address this, some manufacturers have added ridges to the tube core, which abut against the separator to increase friction and prevent unwinding. However, the ridge design results in uneven force on the separator, with greater force applied to the inner ring, making it prone to defects such as streaks and wrinkles, reducing the quality of the separator. Therefore, there is room for improvement. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tool for improving the quality of lithium battery separators, preventing the wound battery separators from unwinding, and helping to ensure the product quality of the battery separators.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a tool for improving the quality of lithium battery diaphragms, comprising a rod body for penetrating a tube core, a fixing plate fixedly provided at one end of the rod body, a first gripping portion provided at a side of the fixing plate away from the rod body, and a limiting plate detachably connected to the other end of the rod body, a second gripping portion provided at a side of the limiting plate away from the rod body.

[0006] Preferably, the first gripping portion is a first through hole, a first groove or a first fixing block provided on the fixing plate, and the second gripping portion is a second through hole, a second groove or a second fixing block provided on the limiting plate.

[0007] Preferably, the lower end surface of the first fixed block is recessed upward to form a plurality of first strip grooves, one end of the first strip grooves passes through the side of the first fixed block away from the fixed plate; the lower end surface of the second fixed block is recessed upward to form a plurality of second strip grooves, one end of the second strip grooves passes through the side of the second fixed block away from the limiting plate.

[0008] Preferably, the fixing plate and the limiting plate are both square plates.

[0009] Preferably, a first U-shaped plate with an opening facing downward is integrally provided at the lower end of the fixing plate, and a second U-shaped plate with an opening facing downward is integrally provided at the lower end of the limiting plate.

[0010] Preferably, the limiting plate is provided with an opening, a first connecting block and a latch, the first connecting block is provided with a first through-hole, a second connecting block is fixedly provided at the other end of the rod body, the second connecting block is provided with a second through-hole, the second connecting block passes through the opening, the first through-hole is connected to the second through-hole, and the latch passes through the first through-hole and the second through-hole.

[0011] Preferably, the latch includes a column and a limit head fixedly arranged at the upper end of the column, and the lower end of the column is sequentially penetrated by the first through-hole and the second through-hole.

[0012] Preferably, a mounting groove is provided on the side of the column, and the mounting groove is located below the second through-hole. A slider is slidably provided in the mounting groove, and a compression spring is provided between the slider and the bottom of the mounting groove, and the compression spring is used to drive the head of the slider to slide out of the mounting groove.

[0013] Preferably, an upward arrow mark is provided on a side of the fixing plate away from the rod body and / or a side of the limiting plate away from the rod body.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] 1. The rod body is passed through the tube core, and the fixing plate and the limiting plate cooperate to abut against both ends of the battery separator wound on the tube core to prevent the battery separator from unwinding due to low friction, thereby ensuring the stability of the battery separator during packaging, shipment and transportation;

[0016] 2. This structure avoids the uneven stress on the battery separator caused by the traditional ridge design, can effectively reduce defects such as stripes and wrinkles on the battery separator, and helps to ensure the appearance and quality of the battery separator;

[0017] 3. The limit plate and the rod body are detachably connected, so that the tool can be quickly used with different tube cores, with good versatility and can be recycled;

[0018] 4. By providing the first gripping portion and the second gripping portion, it is convenient for workers to grasp, which helps to improve the convenience and safety of carrying the battery diaphragm, while reducing the probability of workers contacting the battery diaphragm surface and reducing the occurrence of membrane surface defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0022] Figure 4 The structure of the fixed plate in this utility model is shown as follows Figure 1 ;

[0023] Figure 5 This is a schematic diagram of the structure of the utility model Figure 3 ;

[0024] Figure 6 This is a schematic diagram of the structure of the fixed plate in the utility model Figure 2 ;

[0025] Figure 7 It is a side structural diagram of the utility model;

[0026] Figure 8 It is a schematic diagram of the partial cross-sectional structure of the present utility model.

[0027] In the figure: 1. rod body; 11. second connecting block; 111. second through hole; 2. fixing plate; 21. first U-shaped plate; 3. first gripping part; 31. first groove; 32. first through hole; 33. first fixing block; 331. first strip groove; 4. limiting plate; 41. second U-shaped plate; 42. opening; 43. first connecting block; 431. first through hole; 5. second gripping part; 51. second groove; 52. second through hole; 53. second fixing block; 531. second strip groove; 6. latch; 61. column; 611. mounting groove; 612. slider; 613. compression spring; 62. limiting head; 7. arrow mark. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Example 1: Figure 1 and Figure 2As shown, a tool for improving the quality of lithium battery separators includes a rod body 1 for inserting a tube core. A fixing plate 2 is fixedly mounted on one end of the rod body 1. A first gripping portion 3 is provided on the side of the fixing plate 2 facing away from the rod body 1. A limit plate 4 is detachably connected to the other end of the rod body 1. A second gripping portion 5 is provided on the side of the limit plate 4 facing away from the rod body 1. The rod body 1 and the fixing plate 2 are integrally formed or welded together to ensure the overall load-bearing capacity.

[0031] In this embodiment, the first gripping portion 3 is a first through hole 31 provided on the fixing plate 2, and the second gripping portion 5 is a second through hole 51 provided on the limiting plate 4. The staff can extend their hands into the first through hole 31 and the second through hole 51 to support the fixing plate 2 and the limiting plate 4.

[0032] In this embodiment, the fixing plate 2 and the limiting plate 4 are both square plates to ensure stability during placement.

[0033] In this embodiment, an upward arrow mark 7 is provided on the side of the fixing plate 2 away from the rod body 1 and / or the side of the limiting plate 4 away from the rod body 1. Preferably, an arrow mark 7 is provided on both the fixing plate 2 and the limiting plate 4. The arrow mark 7 can effectively remind the staff of the correct installation and placement direction, ensure that the tooling maintains a stable and correct orientation during use, and reduce the risk of misoperation.

[0034] Since the battery separator is a material with high requirements on appearance, in order to ensure the appearance quality of the battery separator, the rod body 1, the fixing plate 2, and the limit plate 4 are preferably made of polished cardboard. Not only can the rod body 1 meet the load-bearing capacity, but it is also not easy to be scratched by the wound battery separator.

[0035] Example 2: Figure 3 and Figure 4 As shown, the rest of the parts are the same as those in Example 1, except that the first gripping portion 3 is a first groove 32 provided on the fixed plate 2, and the second gripping portion 5 is a second groove 52 provided on the limiting plate 4. The staff can extend their hands into the first groove 32 and the second groove 52 to support the fixed plate 2 and the limiting plate 4.

[0036] Example 3: Figure 5 and Figure 6 As shown, the rest of the parts are the same as those in Example 1, except that the first gripping portion 3 is a first fixed block 33 provided on the fixed plate 2, and the second gripping portion 5 is a second fixed block 53 provided on the limiting plate 4. The staff can grasp the first fixed block 33 and the second fixed block 53 with their hands to support the fixed plate 2 and the limiting plate 4.

[0037] In this embodiment, the lower end surface of the first fixed block 33 is recessed upward to form a plurality of first strip grooves 331, and one end of the first strip groove 331 passes through the side of the first fixed block 33 away from the fixed plate 2; the lower end surface of the second fixed block 53 is recessed upward to form a plurality of second strip grooves 531, and one end of the second strip groove 531 passes through the side of the second fixed block 53 away from the limiting plate 4. The first strip groove 331 and the second strip groove 531 correspond to the fingers, which facilitates the staff to stably grasp the first fixed block 33 and the second fixed block 53.

[0038] Example 4: Figure 7 As shown, the rest of the parts are the same as those in the first embodiment, except that a first U-shaped plate 21 with an opening facing downward is integrally provided at the lower end of the fixing plate 2, and a second U-shaped plate 41 with an opening facing downward is integrally provided at the lower end of the limiting plate 4. The provision of the first U-shaped plate 21 and the second U-shaped plate 41 not only helps to improve stability during placement, but also, when stacking, the upper end of the fixing plate 2 on the lower side can be inserted into the first U-shaped plate 21 at the lower end of the fixing plate 2 on the upper side, and the upper end of the limiting plate 4 on the lower side can be inserted into the second U-shaped plate 41 at the lower end of the limiting plate 4 on the upper side, which facilitates stacking and helps to improve stability during stacking.

[0039] Example 5: Figure 2 and Figure 8 As shown, the rest of the parts are the same as those in the first embodiment, except that the limiting plate 4 is provided with an opening 42, a first connecting block 43 and a latch 6, the first connecting block 43 is provided with a first through-hole 431, and the other end of the rod body 1 is fixedly provided with a second connecting block 11, the second connecting block 11 is provided with a second through-hole 111, the second connecting block 11 is provided with an opening 42, the first through-hole 431 is connected to the second through-hole 111, and the latch 6 is provided with the first through-hole 431 and the second through-hole 111. This structural design is simple and convenient for staff to quickly disassemble and assemble the limiting plate 4. Preferably, there are two openings 42, two first connecting blocks 43, and two second connecting blocks 11, and the opening 42 is a square opening. The vertical cross-sections of the first connecting block 43 and the second connecting block 11 are consistent with the shape of the opening 42.

[0040] In this embodiment, the latch 6 includes a column 61 and a limit head 62 fixedly arranged at the upper end of the column 61. The lower end of the column 61 is sequentially penetrated by a first through-hole 431 and a second through-hole 111. The limit head 62 abuts against the upper end surface of the first connecting block 43.

[0041] In this embodiment, a mounting groove 611 is provided on the side of the column 61. The mounting groove 611 is located below the second through-hole 111. A slider 612 is slidably provided in the mounting groove 611. A compression spring 613 is provided between the slider 612 and the bottom of the mounting groove 611. The compression spring 613 is used to drive the head of the slider 612 to slide out of the mounting groove 611. The head of the slider 612 is designed to be hemispherical. When the latch 6 is inserted into the first through-hole 431 and the second through-hole 111, the slider 612 is first squeezed into the mounting groove 611, and the compression spring 613 deforms and generates a rebound force. After the mounting groove 611 moves below the second through-hole 111, the compression spring 613 rebounds and causes the head of the slider 612 to extend out of the mounting groove 611. The slider 612 cooperates with the stopper 62 to prevent the latch 6 from disengaging from the first through-hole 431 and the second through-hole 111, thereby achieving a stable locking function.

[0042] When in use, first penetrate the other end of the rod body 1 into the tube core wrapped with the battery diaphragm, then penetrate the opening 42 of the second connecting block 11, the second through-hole 111 on the second connecting block 11 corresponds to and is connected with the first through-hole 431 on the first connecting block 43, and finally penetrate the pin 6 into the first through-hole 431 and the second through-hole 111 to achieve locking. At this time, the fixing plate 2 and the limiting plate 4 cooperate to abut against the two ends of the battery diaphragm wrapped on the tube core, and the staff can carry it through the first gripping part 3 and the second gripping part 5.

[0043] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A tool for improving the quality of lithium battery separators, characterized by: The invention comprises a rod body (1) for passing a tube core, a fixing plate (2) being fixedly provided at one end of the rod body (1), a first gripping portion (3) being provided on a side of the fixing plate (2) away from the rod body (1), and a limiting plate (4) being detachably connected to the other end of the rod body (1), a second gripping portion (5) being provided on a side of the limiting plate (4) away from the rod body (1).

2. The tool for improving the quality of lithium battery separator according to claim 1, characterized in that: The first gripping portion (3) is a first through hole (31), a first groove (32) or a first fixing block (33) provided on the fixing plate (2), and the second gripping portion (5) is a second through hole (51), a second groove (52) or a second fixing block (53) provided on the limiting plate (4).

3. The tool for improving the quality of lithium battery separator according to claim 2, characterized in that: The lower end surface of the first fixing block (33) is recessed upward to form a plurality of first strip grooves (331), and one end of the first strip groove (331) passes through a side of the first fixing block (33) away from the fixing plate (2); The lower end surface of the second fixing block (53) is recessed upward to form a plurality of second strip grooves (531), and one end of the second strip groove (531) passes through a side of the second fixing block (53) away from the limiting plate (4).

4. The tool for improving the quality of lithium battery separator according to claim 1, characterized in that: The fixing plate (2) and the limiting plate (4) are both square plates.

5. The tool for improving the quality of lithium battery separator according to claim 4, characterized in that: The lower end of the fixing plate (2) is integrally provided with a first U-shaped plate (21) with an opening facing downward, and the lower end of the limiting plate (4) is integrally provided with a second U-shaped plate (41) with an opening facing downward.

6. The tool for improving the quality of lithium battery separator according to claim 1, characterized in that: The limiting plate (4) is provided with an opening (42), a first connecting block (43) and a latch (6); the first connecting block (43) is provided with a first through-hole (431); the other end of the rod body (1) is fixedly provided with a second connecting block (11); the second connecting block (11) is provided with a second through-hole (111); the second connecting block (11) is provided with the opening (42); the first through-hole (431) is communicated with the second through-hole (111); the latch (6) is provided with the first through-hole (431) and the second through-hole (111).

7. The tool for improving the quality of lithium battery separator according to claim 6, characterized in that: The latch (6) comprises a column (61) and a limit head (62) fixedly arranged at the upper end of the column (61); the lower end of the column (61) is penetrated by the first through hole (431) and the second through hole (111) in sequence.

8. The tool for improving the quality of lithium battery separator according to claim 7, characterized in that: A mounting groove (611) is provided on the side of the column (61), and the mounting groove (611) is located below the second through-hole (111). A slider (612) is slidably provided in the mounting groove (611), and a compression spring (613) is provided between the slider (612) and the bottom of the mounting groove (611). The compression spring (613) is used to drive the head of the slider (612) to slide out of the mounting groove (611).

9. The tool for improving the quality of lithium battery separator according to claim 1, characterized in that: An upward arrow mark (7) is provided on the side of the fixing plate (2) away from the rod body (1) and / or on the side of the limiting plate (4) away from the rod body (1).

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