Non-contacting closing device for lateral stretching of lithium-ion battery separators

Abstract

The utility model discloses a kind of non-contact closed clamping devices for lithium ion battery diaphragm transverse stretching, it includes support frame: the side wall of the support frame is equipped with stepper motor, the output end of the stepper motor is equipped with positive and negative toothed lead screw, the outer wall of the positive and negative toothed lead screw is symmetrically movably connected with slider, the upper surface of the slider is fixed with sliding frame, the inner wall of the sliding frame is provided with adjusting mechanism. By the setting of clamping mechanism, compared with prior art, two groups of clamping mechanisms in the device can adjust the clamping force of permanent magnet on diaphragm by adjusting the size of coil current, and the diaphragm is clamped between the position of two groups of permanent magnets, the non-contact clamping of diaphragm is realized by two groups of permanent magnets, compared with the mode of existing pressure wheel closed clamping, the clamping of diaphragm can be realized without contacting diaphragm, so as to avoid damage or scratch on the surface of diaphragm, effectively ensure the integrity of diaphragm surface.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery separator production and processing technology, and in particular to a non-contact clamping device for lateral stretching of lithium-ion battery separators. Background Technology

[0002] As a crucial core component of lithium-ion batteries, the lithium-ion battery separator's manufacturing process and quality control directly affect the battery's overall performance and reliability. In traditional continuous lithium-ion battery separator production lines, the clamping mechanism typically employs a mechanical contact operation. This physical contact can not only cause minor mechanical damage or scratches to the separator surface but also introduce contaminants such as dust, severely impacting key performance indicators such as thickness uniformity, porosity consistency, and mechanical strength, ultimately shortening battery life. Therefore, designing a novel non-contact clamping device that avoids any damage or contamination to the separator surface through a non-contact clamping method has significant application value for improving the product quality and production yield of lithium-ion battery separators. Utility Model Content

[0003] In order to overcome the shortcomings of existing technologies, such as the mechanical contact operation method of the pressure roller clamping mechanism in traditional lithium battery separator continuous production lines, which may cause minor mechanical damage or scratches to the separator surface and introduce dust and other pollutants, one of the purposes of this utility model is to provide a non-contact clamping device for lateral stretching of lithium-ion battery separators.

[0004] One of the objectives of this utility model is achieved by the following technical solution: a non-contact clamping device for lateral stretching of lithium-ion battery separators, comprising a support frame: a stepper motor is mounted on one side wall of the support frame, a positive and negative threaded screw is mounted on the output end of the stepper motor, a slider is symmetrically and movably connected to the outer wall of the positive and negative threaded screw, a sliding frame is fixed on the upper surface of the slider, an adjustment mechanism is provided on the inner wall of the sliding frame, and a clamping mechanism is mounted on one side of the adjustment mechanism; the clamping mechanism includes a soft magnetic yoke mounted on the adjustment mechanism, a coil wound on the soft magnetic yoke, a plurality of permanent magnets magnetically connected to the soft magnetic yoke, a current regulator and a controller mounted on one side of the sliding frame.

[0005] According to the non-contact clamping device for lateral stretching of lithium-ion battery separator, the current regulator and the controller are communicatively connected.

[0006] According to the non-contact clamping device for lateral stretching of lithium-ion battery separator, the adjusting mechanism includes threaded holes equidistantly opened on the side wall of the sliding frame in a linear array, a first movable block and a second movable block installed on the inner bottom wall and inner wall of the sliding frame, a waist-shaped hole opened on both sides of the first movable block and the second movable block, a first hand screw threaded to the inner wall of the waist-shaped hole, and a lower horizontal plate and an upper horizontal plate inserted into one side of the first movable block and the second movable block, wherein the first hand screw is threadedly connected to the waist-shaped hole and the threaded hole.

[0007] According to the non-contact clamping device for lateral stretching of lithium-ion battery separator, the number of clamping mechanisms is two sets, and the two sets of clamping mechanisms are respectively arranged on one side of the upper horizontal plate and the lower horizontal plate.

[0008] According to the non-contact clamping device for lateral stretching of lithium-ion battery separator, slots are provided on both sides of the upper horizontal plate and the lower horizontal plate, and the first moving block and the second moving block are inserted into the slots in a limiting manner.

[0009] According to the non-contact clamping device for lateral stretching of lithium-ion battery separator, both the upper and lower horizontal plates are provided with insertion slots on the side near the soft magnetic yoke. The soft magnetic yoke is fixed with a plug block on the side near the insertion slot. The upper surface of the plug block is provided with a through hole, and the inner wall of the through hole is threaded with two hand screws.

[0010] According to the non-contact clamping device for lateral stretching of lithium-ion battery separator, a laser displacement sensor is installed on one side of both the upper and lower horizontal plates.

[0011] According to the non-contact clamping device for lateral stretching of lithium-ion battery separator, a mounting plate is fixedly provided on the lower surface of the support frame.

[0012] The above-mentioned solution has the following beneficial effects:

[0013] 1. By setting up a clamping mechanism, compared with the prior art, this device is equipped with two sets of clamping mechanisms. The clamping force of the permanent magnet on the diaphragm can be adjusted by adjusting the magnitude of the coil current. The diaphragm is clamped between the two sets of permanent magnets. The two sets of permanent magnets achieve non-contact clamping of the diaphragm. Compared with the existing pressure roller clamping method, this method can achieve clamping of the diaphragm without contacting it, thereby avoiding damage or scratches on the diaphragm surface and effectively ensuring the integrity of the diaphragm surface.

[0014] 2. The adjustment mechanism facilitates the adjustment of the distance between the two clamping mechanisms through the cooperation of multiple components. The magnetic force of the permanent magnet can also be adjusted within a certain range by adjusting the distance, which can meet different usage requirements within a certain range. Furthermore, the clamping mechanism and the adjustment mechanism of this device can be assembled and disassembled with each other, which effectively improves the applicability of the device.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the overall structure of a non-contact clamping device for lateral stretching of a lithium-ion battery separator according to the present invention.

[0018] Figure 2 This is a top view schematic diagram of the overall structure of a non-contact clamping device for lateral stretching of a lithium-ion battery separator according to the present invention.

[0019] Figure 3 This is a schematic diagram of the positive and negative threaded screws of a non-contact clamping device for lateral stretching of a lithium-ion battery separator according to the present invention.

[0020] Figure 4 This is a schematic diagram of the sliding frame of a non-contact clamping device for lateral stretching of a lithium-ion battery separator according to the present invention.

[0021] Figure 5 This is a schematic diagram of the insertion slot of a non-contact clamping device for lateral stretching of a lithium-ion battery separator according to the present invention.

[0022] Legend:

[0023] 1. Support frame; 2. Stepper motor; 3. Forward and reverse threaded screws; 4. Slider; 5. Sliding frame; 6. Adjustment mechanism; 61. Threaded hole; 62. Moving block one; 63. Moving block two; 64. Waist-shaped hole; 65. Hand screw one; 66. Lower horizontal plate; 67. Upper horizontal plate; 7. Clamping mechanism; 71. Soft magnetic yoke; 72. Coil; 73. Permanent magnet; 74. Current regulator; 75. Controller; 8. Slot; 9. Insertion slot; 10. Insertion block; 11. Through hole; 12. Hand screw two; 13. Laser displacement sensor; 14. Mounting plate. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figures 1-5 A non-contact clamping device for lateral stretching of lithium-ion battery separators includes a support frame 1. A stepper motor 2 is mounted on one side wall of the support frame 1. A positive and negative threaded screw 3 is mounted on the output end of the stepper motor 2. A slider 4 is symmetrically and movably connected to the outer wall of the positive and negative threaded screw 3. A sliding frame 5 is fixed on the upper surface of the slider 4. An adjustment mechanism 6 is provided on the inner wall of the sliding frame 5. A clamping mechanism 7 is mounted on one side of the adjustment mechanism 6. The clamping mechanism 7 includes a soft magnetic yoke 71 mounted on the adjustment mechanism 6, a coil 72 wound on the soft magnetic yoke 71, a plurality of permanent magnets 73 magnetically connected to the soft magnetic yoke 71, a current regulator 74 mounted on one side of the sliding frame 5, and a controller 75. The current regulator 74 and the controller 75 are communicatively connected. The adjustment mechanism 6 includes threaded holes 61 equidistantly opened in a linear array on the side wall of the sliding frame 5, a first moving block 62 and a second moving block 63 installed on the inner bottom wall and inner wall of the sliding frame 5, and threaded holes 61 opened on the first moving block 62 and the second moving block 63. The movable block 63 has oblong holes 64 on both sides, a hand screw 65 threaded into the inner wall of the oblong holes 64, and a lower horizontal plate 66 and an upper horizontal plate 67 inserted into one side of the movable block 62 and the movable block 63. The hand screw 65 is threaded into the oblong holes 64 and the threaded hole 61. There are two sets of clamping mechanisms 7, which are respectively set on one side of the upper horizontal plate 67 and the lower horizontal plate 66. Slots 8 are opened on both sides of the upper horizontal plate 67 and the lower horizontal plate 66. Moving block 1 62 and moving block 2 63 are inserted into slot 8 in a limiting position. Insertion slots 9 are provided on the side of the upper horizontal plate 67 and the lower horizontal plate 66 near the soft magnetic yoke 71. Insertion block 10 is fixed on the side of the soft magnetic yoke 71 near the insertion slot 9. Through hole 11 is provided on the upper surface of insertion block 10. Hand screw 2 12 is threaded on the inner wall of through hole 11. Laser displacement sensor 13 is installed on one side of the upper horizontal plate 67 and the lower horizontal plate 66. Mounting plate 14 is fixed on the lower surface of support frame 1.

[0026] By setting up the adjustment mechanism 6 and the clamping mechanism 7, the adjustment mechanism 6 can be adjusted within a certain range according to the width of the diaphragm, and the two sets of clamping mechanisms 7 can achieve non-contact clamping and limiting of one end of the diaphragm, ensuring the stability of the diaphragm during lateral stretching. The number of permanent magnets 73 can be increased or decreased according to the width of the diaphragm, and the magnetic force of the permanent magnets 73 can be adjusted by controlling the magnitude of the current of the control coil 72, thereby adjusting and controlling the clamping force on the diaphragm, effectively improving the convenience of clamping. Furthermore, the non-contact clamping method effectively ensures the integrity of the diaphragm surface, avoiding damage and scratches to the diaphragm, making it easy to use. With the cooperation of the insertion slot 9, the insertion block 10, the through hole 11 and the second hand screw 12, it is easy to install and remove the soft magnetic yoke 71, making it convenient to use.

[0027] Working principle: The support frame 1 is installed at a suitable position on the diaphragm conveyor device via the mounting plate 14. Then, the distance and position between the two sliding frames 5 are adjusted according to the width of the diaphragm. First, the upper horizontal plate 67 and the lower horizontal plate 66 of suitable width are inserted into the moving block 62 and the moving block 63 on one side through the slot 8. Then, the stepper motor 2 is started, which drives the positive and negative threaded screws 3 to rotate. The positive and negative threaded screws 3 drive the two sliders 4 to move towards or in opposite directions on their outer walls, thereby adjusting the position of the two sliding frames 5. During the movement, the upper horizontal plate 67 and the lower horizontal plate 66 are limited and clamped by the two moving blocks 62 and the moving block 63. Then, the position of the upper horizontal plate 67 can be adjusted to adjust the position of the upper clamping mechanism 7. The hand screw 65 is removed from the inner wall of the threaded hole 61 and the oblong hole 64. Then, the two moving blocks 62 are moved to slide up and down on the inner wall of the two sliding frames 5. When it moves to the appropriate position, the hand screw 65 is removed from the inner wall of the threaded hole 61 and the oblong hole 64. Screw 65 is screwed into the inner wall of the corresponding threaded hole 61 to limit and fix the position of the upper clamping mechanism 7. Adjustment is convenient. Then, the diaphragm is transported between the two clamping mechanisms 7 through the external diaphragm conveying line. When the diaphragm is detected by the two laser displacement sensors 13, the clamping force of the permanent magnet 73 on the diaphragm is adjusted by the current regulator 74 and the controller 75. The laser displacement sensor 13 transmits the signal to the controller 75. The controller 75 controls the current regulator 74 to pass current to the coil 72. By adjusting the magnitude of the current, the magnetic force between the upper and lower permanent magnets 73 is adjusted, thereby adjusting the clamping force on the diaphragm. The diaphragm is clamped between the two permanent magnets 73, thus enabling non-contact clamping of the diaphragm. This effectively ensures the clamping safety and integrity of the diaphragm. During the horizontal pulling process, the clamped end is stable, making it convenient to use and easy to adjust the clamping force according to actual needs, effectively improving the adjustability and convenience of the device.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A non-contact clamping device for lateral stretching of a lithium-ion battery separator, characterized in that, Includes a support frame (1): a stepper motor (2) is installed on one side wall of the support frame (1), a positive and negative threaded screw (3) is installed at the output end of the stepper motor (2), a slider (4) is symmetrically and movably connected to the outer wall of the positive and negative threaded screw (3), a sliding frame (5) is fixed on the upper surface of the slider (4), an adjustment mechanism (6) is provided on the inner wall of the sliding frame (5), and a clamping mechanism (7) is installed on one side of the adjustment mechanism (6). The clamping mechanism (7) includes a soft magnetic yoke (71) mounted on the adjustment mechanism (6), a coil (72) wound on the soft magnetic yoke (71), a plurality of permanent magnets (73) magnetically connected to the soft magnetic yoke (71), a current regulator (74) mounted on one side of the sliding frame (5), and a controller (75).

2. The non-contact clamping device for lateral stretching of a lithium-ion battery separator according to claim 1, characterized in that, The current regulator (74) and the controller (75) are in communication connection.

3. The non-contact clamping device for lateral stretching of a lithium-ion battery separator according to claim 1, characterized in that, The adjustment mechanism (6) includes threaded holes (61) equidistantly opened on the side wall of the sliding frame (5) in a linear array, a first movable block (62) and a second movable block (63) installed on the bottom wall and inner wall of the sliding frame (5), a waist-shaped hole (64) opened on both sides of the first movable block (62) and the second movable block (63), a first hand screw (65) threadedly connected to the inner wall of the waist-shaped hole (64), and a lower horizontal plate (66) and an upper horizontal plate (67) inserted into one side of the first movable block (62) and the second movable block (63). The first hand screw (65) is threadedly connected to the waist-shaped hole (64) and the threaded hole (61).

4. A non-contact clamping device for lateral stretching of a lithium-ion battery separator according to claim 3, characterized in that, The clamping mechanism (7) consists of two sets, which are respectively located on one side of the upper horizontal plate (67) and the lower horizontal plate (66).

5. A non-contact clamping device for lateral stretching of a lithium-ion battery separator according to claim 3, characterized in that, Slots (8) are provided on both sides of the upper horizontal plate (67) and the lower horizontal plate (66), and the first movable block (62) and the second movable block (63) are inserted into the slots (8) in a limiting manner.

6. A non-contact clamping device for lateral stretching of a lithium-ion battery separator according to claim 3, characterized in that, Both the upper horizontal plate (67) and the lower horizontal plate (66) have insertion slots (9) on the side near the soft magnetic yoke (71). The soft magnetic yoke (71) has a plug (10) fixed on the side near the insertion slot (9). The upper surface of the plug (10) has a through hole (11). The inner wall of the through hole (11) is threaded with a two-hand screw (12).

7. A non-contact clamping device for lateral stretching of a lithium-ion battery separator according to claim 3, characterized in that, Laser displacement sensors (13) are installed on one side of both the upper horizontal plate (67) and the lower horizontal plate (66).

8. A non-contact clamping device for lateral stretching of a lithium-ion battery separator according to claim 7, characterized in that, The lower surface of the support frame (1) is fixed with a mounting plate (14).

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