Lithium battery diaphragm and processing method

Abstract

The invention relates to the field of lithium battery processing, in particular to a lithium battery diaphragm and a processing method.The lithium battery diaphragm comprises a supporting frame, a winding roller is rotationally connected to the supporting frame, two matching plates are fixedly connected to the supporting frame, a gap is formed between the two matching plates, the processing device further comprises a fixing frame, and an air cylinder is fixedly connected to the fixing frame; the movable end of the air cylinder is fixedly connected with a cutter, the cutter is in an inverted triangle shape, two wedge-shaped cotton blocks capable of being automatically opened and closed are arranged below the cutter, the supporting frame is fixedly connected with a driving motor, the winding roller is fixedly connected to an output shaft of the driving motor, the inclined faces of the two cotton blocks are each provided with a plurality of protruding edges, and the protruding edges are arranged on the output shaft of the driving motor. And the cutter can be automatically cleaned, and the problem that the cutting effect is affected due to the fact that the cutter adheres to an adhesive is solved.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery processing, and in particular to a lithium battery separator and a processing method thereof. Background Art

[0002] The main function of the lithium battery separator is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. In addition, it also has the function of allowing electrolyte ions to pass through. The separator material is non-conductive, and its physical and chemical properties have a great influence on the performance of the battery. In the process of winding the lithium battery separator, the lithium battery separator that reaches a certain thickness needs to be cut. After the cutter frequently cuts the lithium battery separator, some adhesive is easily attached to both sides of the cutter, which affects the cutting effect of the cutter on the lithium battery separator. Therefore, this application is proposed to address the above problems. Summary of the invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a lithium battery separator and a processing method. When cutting the lithium battery separator, the present invention can automatically clean the cutter to solve the problem that the adhesive attached to the cutter affects the cutting effect.

[0004] A lithium battery diaphragm processing device comprises a support frame, a winding roller is rotatably connected to the support frame, two matching plates are fixedly connected to the support frame, a gap is arranged between the two matching plates, the processing device also comprises a fixed frame, a cylinder is fixedly connected to the fixed frame, a cutter is fixedly connected to the movable end of the cylinder, the cutter is an inverted triangle, two cotton blocks that can be opened and closed automatically are arranged below the cutter, both cotton blocks are wedge-shaped, a driving motor is fixedly connected to the support frame, and the winding roller is fixedly connected to the output shaft of the driving motor.

[0005] A plurality of convex ridges are arranged on the inclined surfaces of the two cotton blocks.

[0006] The lower end of the support frame is fixedly connected to two nozzles, and a plurality of atomizing nozzles are fixedly connected to the two nozzles, and the plurality of atomizing nozzles are all directed toward the cutter.

[0007] The upper end of the support frame is fixedly connected to a liquid storage cylinder, a sliding plug is slidably connected inside the liquid storage cylinder, a sliding rod is fixedly connected to the lower end of the sliding plug, the sliding rod extends to the outside of the liquid storage cylinder and is fixedly connected to the moving end of the cylinder, and a liquid inlet pipe and a liquid discharge pipe are fixedly connected to the liquid storage cylinder, both the liquid inlet pipe and the liquid discharge pipe are connected to the inside of the liquid storage cylinder, and a one-way valve is installed in the liquid inlet pipe and the liquid discharge pipe.

[0008] The liquid discharge pipe is communicated with two nozzles.

[0009] The lower ends of the two nozzles are fixedly connected with straight plates, the two straight plates are slidably connected with limit rods, the ends of the two limit rods are fixedly connected with baffles, the two cotton blocks are respectively fixedly connected to the two limit rods, the two limit rods are sleeved with springs, and the springs are located between the cotton blocks and the straight plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0011] Figure 1 and Figure 2 It is a schematic diagram of the overall structure of a lithium battery diaphragm processing device;

[0012] Figure 3 It is a structural schematic diagram of the winding roller;

[0013] Figure 4 It is the structural diagram of the spring;

[0014] Figure 5 It is a schematic diagram of the structure of the cotton block;

[0015] Figure 6 is a schematic diagram of the structure of the cutter;

[0016] Figure 7 It is the structural schematic diagram of the nozzle;

[0017] Figure 8 It is a structural schematic diagram of the pressure plate. DETAILED DESCRIPTION

[0018] The present invention is described in detail with reference to the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 4-8 ,

[0020] A lithium battery diaphragm processing device includes a support frame 101, to which a winding roller 103 is rotatably connected via a bearing, two matching plates 104 are welded to the support frame 101, and a gap is provided between the two matching plates 104. The processing device also includes a fixed frame 201, to which a cylinder 202 is fixedly connected via bolts, a cutter 203 is fixedly connected to the movable end of the cylinder 202, and the cutter 203 is an inverted triangle. Two cotton blocks 503 that can be opened and closed automatically are provided below the cutter 203, and both cotton blocks 503 are wedge-shaped. A driving motor 102 is fixedly connected to the support frame 101, and the winding roller 103 is fixedly connected to the output shaft of the driving motor 102.

[0021] When using the processing device, the staff fixes one end of the stretched lithium battery separator on the winding roller 103, and then uses the driving motor 102 to drive the winding roller 103 to rotate to wind up the lithium battery separator. When the rolled lithium battery separator roll reaches a certain thickness, the moving end of the cylinder 202 is controlled to extend, thereby driving the cutter 203 to move downward. The cutter 203 can be inserted into the gap between the two matching plates 104, and then the lithium battery separator can be cut, completing the winding of the lithium battery separator.

[0022] After the cutter 203 frequently cuts the lithium battery diaphragm, some adhesive is easily attached to both sides of the cutter 203, which affects the cutting effect of the cutter 203 on the lithium battery diaphragm. During the downward movement of the cutter 203 of the device, it first comes into contact with the two cotton blocks 503. Since the cutter 203 is an inverted triangle and the two cotton blocks 503 are wedge-shaped, the cutter 203 can be inserted into the middle of the two cotton blocks 503, and the two cotton blocks 503 are automatically separated during the descent. The friction between the two cotton blocks 503 and the cutter 203 can remove the adhesive adhered to the surface of the cutter 203, thereby ensuring the cutting performance of the cutter 203.

[0023] See also Figure 5 ,

[0024] The inclined surfaces of the two cotton blocks 503 are both provided with a plurality of ridges.

[0025] The plurality of ridges can increase the friction between the two cotton blocks 503 and the side surfaces of the cutter 203 , thereby improving the cleaning effect on the side surfaces of the cutter 203 .

[0026] See also Figure 4 ,

[0027] Two nozzles 401 are welded to the lower end of the support frame 101 , and a plurality of atomizing nozzles 402 are welded to both nozzles 401 , and the plurality of atomizing nozzles 402 are all facing the cutter 203 .

[0028] When the cutter 203 moves downward, the two nozzles 401 spray the distilled water in the form of atomization through the multiple atomizing nozzles 402, so that the distilled water can be evenly adhered to the two sides of the cutter 203. When the cutter 203 moves downward, the cutter 203 comes into contact with the two cotton blocks 503. The two cotton blocks 503 can clean the cutter 203 and absorb the moisture on the sides of the cutter 203, thereby keeping the cutter 203 dry.

[0029] The adhesive on the side of the cutter 203 can be easily removed by spraying water.

[0030] See also Figure 6 ,

[0031] A liquid storage cylinder 301 is welded to the upper end of the support frame 101, and a sliding plug 302 is slidably connected inside the liquid storage cylinder 301. The lower end of the sliding plug 302 is fixedly connected to a sliding rod 303 by bolts. The sliding rod 303 extends to the outside of the liquid storage cylinder 301 and is fixedly connected to the moving end of the cylinder 202 by bolts. A liquid inlet pipe 304 and a liquid discharge pipe 305 are welded to the liquid storage cylinder 301. The liquid inlet pipe 304 and the liquid discharge pipe 305 are both connected to the inside of the liquid storage cylinder 301, and a one-way valve is installed in the liquid inlet pipe 304 and the liquid discharge pipe 305.

[0032] The liquid storage cylinder 301 is used to store distilled water. When the moving end of the cylinder 202 extends and drives the cutter 203 to move downward, the moving end of the cylinder 202 also drives the slide rod 303 to extend downward. The slide plug 302 slides downward to increase the internal pressure of the liquid storage cylinder 301. At this time, the one-way valve of the discharge pipe 305 opens, and the one-way valve of the liquid inlet pipe 304 closes, so that the distilled water inside the liquid storage cylinder 301 can be discharged through the discharge pipe 305.

[0033] When the moving end of the cylinder 202 contracts, the plug 302 slides upward, and negative pressure is generated in the liquid storage cylinder 301. At this time, the one-way valve of the discharge pipe 305 is closed, and the one-way valve of the liquid inlet pipe 304 is opened. The liquid storage cylinder 301 can draw distilled water to the outside through the liquid inlet pipe 304, thereby realizing the function of automatic water replenishment.

[0034] See also Figure 4 ,

[0035] The liquid discharge pipe 305 is in communication with the two nozzles 401 , and distilled water is provided to the two nozzles 401 simultaneously through the liquid discharge pipe 305 , so that the two nozzles 401 can spray atomized water simultaneously, thereby ensuring cleaning efficiency.

[0036] See also Figure 4 ,

[0037] A straight plate is welded at the lower end of the two nozzles 401, and a limit rod 501 is slidably connected to the two straight plates. A blocking piece is welded at the end of the two limit rods 501. Two cotton blocks 503 are respectively bonded to the two limit rods 501. A spring 502 is sleeved on the two limit rods 501, and the spring 502 is located between the cotton block 503 and the straight plate.

[0038] When the cutter 203 moves downward, the cutter 203 automatically separates the two cotton blocks 503, and at the same time the two limit rods 501 slide, and the two springs 502 are compressed by force. When the cutter 203 moves upward to separate from the two cotton blocks 503, the two cotton blocks 503 can automatically reset under the elastic action of the springs 502.

[0039] See also Figure 8 ,

[0040] The support frame 101 is rotatably connected to a stretching roller 105 via a bearing. When the stretched lithium battery diaphragm passes through the bottom of the stretching roller 105, the stretching roller 105 can stretch the lithium battery diaphragm to ensure that the surface of the lithium battery diaphragm is flat.

[0041] See also Figure 8 ,

[0042] A pressing plate 106 is rotatably connected to the support frame 101 via an axis, and a torsion spring 107 is installed at the rotation connection between the pressing plate 106 and the support frame 101 .

[0043] When the lithium battery diaphragm is rolled up, the lithium battery diaphragm passes under the pressing plate 106. When the lithium battery diaphragm moves, the pressing plate 106 can automatically smooth the surface of the lithium battery diaphragm to avoid wrinkles. When the lithium battery diaphragm is cut, the pressing plate 106 automatically presses the lithium battery diaphragm under the action of the torsion spring 107, thereby fixing one end of the lithium battery diaphragm to prevent the lithium battery diaphragm from falling to the ground, making it easier for the staff to continue to roll up the lithium battery diaphragm.

[0044] A method for using a lithium battery separator processing device, the method comprising the following steps:

[0045] Step 1: The staff fixes one end of the stretched lithium battery separator on the winding roller 103, and then uses the driving motor 102 to drive the winding roller 103 to rotate and wind up the lithium battery separator. When the rolled lithium battery separator roll reaches a certain thickness, the moving end of the cylinder 202 is extended by controlling the cylinder 202;

[0046] Step 2: The cutter 203 comes into contact with the two cotton blocks 503. The two cotton blocks 503 clean the cutter 203 and absorb the moisture on the side of the cutter 203, so that the cutter 203 remains dry.

[0047] Step 3: The cutter 203 is inserted between the two cotton blocks 503, and the two cotton blocks 503 are automatically separated during the descending process, and the friction between the two cotton blocks 503 and the cutter 203 removes the adhesive adhered to the surface of the cutter 203;

[0048] Step 4: The cutter 203 moves downward, and the cutter 203 can be inserted into the gap between the two matching plates 104 to cut the lithium battery separator;

[0049] Step 5: When the lithium battery separator is cut, the pressing plate 106 automatically presses the lithium battery separator under the action of the torsion spring 107, so as to fix one end of the lithium battery separator.

[0050] The lithium battery separator processed by the processing method is characterized in that the aluminum profile includes a polyoxyethylene material layer, a transition layer, an ultra-high molecular polyethylene layer and micropores.

Claims

1. A lithium battery diaphragm processing device, characterized in that: The processing device comprises a support frame (101), the support frame (101) is rotatably connected to a winding roller (103), the support frame (101) is fixedly connected to two matching plates (104), and a gap is arranged between the two matching plates (104). The processing device also comprises a fixed frame (201), the fixed frame (201) is fixedly connected to a cylinder (202), the movable end of the cylinder (202) is fixedly connected to a cutter (203), the cutter (203) is in the shape of an inverted triangle, two cotton blocks (503) capable of opening and closing automatically are arranged below the cutter (203), and the two cotton blocks (503) are both wedge-shaped. The support frame (101) is fixedly connected to a driving motor (102), and the winding roller (103) is fixedly connected to the output shaft of the driving motor (102).

2. A lithium battery diaphragm processing device according to claim 1, characterized in that: A plurality of ridges are arranged on the inclined surfaces of the two cotton blocks (503).

3. A lithium battery diaphragm processing device according to claim 2, characterized in that: The lower end of the support frame (101) is fixedly connected to two nozzles (401), and a plurality of atomizing nozzles (402) are fixedly connected to the two nozzles (401), and the plurality of atomizing nozzles (402) are all directed toward the cutter (203).

4. A lithium battery diaphragm processing device according to claim 3, characterized in that: The upper end of the support frame (101) is fixedly connected to a liquid storage cylinder (301), a sliding plug (302) is slidably connected inside the liquid storage cylinder (301), a sliding rod (303) is fixedly connected to the lower end of the sliding plug (302), the sliding rod (303) extends to the outside of the liquid storage cylinder (301) and is fixedly connected to the moving end of the cylinder (202), a liquid inlet pipe (304) and a liquid discharge pipe (305) are fixedly connected to the liquid storage cylinder (301), the liquid inlet pipe (304) and the liquid discharge pipe (305) are both communicated with the inside of the liquid storage cylinder (301), and a one-way valve is installed in the liquid inlet pipe (304) and the liquid discharge pipe (305).

5. A lithium battery diaphragm processing device according to claim 4, characterized in that: The liquid discharge pipe (305) is connected to two nozzles (401).

6. A lithium battery diaphragm processing device according to claim 5, characterized in that: The lower ends of the two nozzles (401) are fixedly connected to a straight plate, the two straight plates are slidably connected to a limit rod (501), the ends of the two limit rods (501) are fixedly connected to a blocking sheet, the two cotton blocks (503) are respectively fixedly connected to the two limit rods (501), the two limit rods (501) are sleeved with a spring (502), and the spring (502) is located between the cotton block (503) and the straight plate.

7. A lithium battery diaphragm processing device according to claim 6, characterized in that: A stretching roller (105) is rotatably connected to the support frame (101).

8. A lithium battery diaphragm processing device according to claim 7, characterized in that: A pressing plate (106) is rotatably connected to the support frame (101), and a torsion spring (107) is installed at the rotatable connection between the pressing plate (106) and the support frame (101).

9. A method for using the lithium battery diaphragm processing device according to claim 8, characterized in that: The method comprises the following steps: Step 1: The staff fixes one end of the stretched lithium battery separator on the winding roller (103), and then uses the driving motor (102) to drive the winding roller (103) to rotate and wind up the lithium battery separator. When the rolled lithium battery separator roll reaches a certain thickness, the moving end of the control cylinder (202) is extended; Step 2: The cutter (203) comes into contact with the two cotton pieces (503), and the two cotton pieces (503) clean the cutter (203) and absorb the moisture on the side of the cutter (203), so that the cutter (203) remains dry; Step 3: The cutter (203) is inserted between the two cotton blocks (503), and the two cotton blocks (503) are automatically separated during the descending process, and the friction between the two cotton blocks (503) and the cutter (203) removes the adhesive adhering to the surface of the cutter (203); Step 4: The cutter (203) moves downward, and the cutter (203) can be inserted into the gap between the two matching plates (104) to cut the lithium battery separator; Step 5: When the lithium battery diaphragm is cut, the pressing plate (106) automatically presses the lithium battery diaphragm under the action of the torsion spring (107), thereby fixing one end of the lithium battery diaphragm.

10. A lithium battery separator processed by the processing method according to claim 9, characterized in that: The aluminum profile comprises a polyoxyethylene material layer, a transition layer, an ultra-high molecular polyethylene layer and micropores.

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