A pretreatment device for a battery separator master roll

Abstract

The present invention belongs to the technical field of battery processing. Specifically, it relates to a pretreatment device for a battery separator master roll, which includes a bottom plate. The bottom plate is the assembly main body of this processing device. A processing box is fixedly installed in the middle of the top surface of the bottom plate. Through openings are symmetrically formed in the upper parts on both sides of the box body of the processing box. A storage box is fixedly assembled on one side of the processing box. There is a gap between the processing box and the storage box and they are interconnected through a communication pipe. An opening is also formed in the upper part of the side of the processing box facing the storage box. The present invention sets up a double mechanism of a corona charge removal mechanism and an ion charge removal mechanism. Among them, the corona charge removal mechanism ionizes air by using high-voltage corona, so that the ionized ions neutralize the static charges on the battery separator. The ion charge removal mechanism sprays an ion flow onto the battery separator through a power pump, a delivery pipe and a nozzle to further neutralize the static charges on its surface, thereby effectively eliminating the static electricity on the battery separator.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery processing, and more specifically, relates to a pretreatment device for battery separator master rolls. Background Art

[0002] A battery separator is one of the important components of a lithium-ion battery. It is located between the positive and negative electrodes of the battery to prevent the two from contacting and short-circuiting, while ensuring that lithium ions can pass through smoothly during the charge and discharge process. The quality and performance of the separator directly affect the safety, cycle life, and overall performance of the battery. During the production process of battery separators, the separator materials are usually manufactured in large rolls (i.e., master rolls). However, these master rolls often need to go through a series of pretreatment steps to meet the specific requirements of subsequent processing or use. For example, the separator may need to remove surface static electricity, be cleaned, have its humidity adjusted, or undergo quality inspection, etc.

[0003] When dealing with static electricity in existing battery separators, generally two methods, namely contact type and corona discharge, are used to eliminate static electricity. In the contact type for eliminating static electricity, usually an antistatic cord is used to contact the surface of the separator to conduct away the static electricity. However, the contact between the antistatic cord and the separator surface may cause wear of the separator, and due to uneven contact, local static electricity residue or material damage may occur. For the other method of corona discharge for eliminating static electricity, it relies on high-voltage corona discharge to neutralize static electricity by ionizing air. The effect of this method is easily affected by environmental factors such as humidity and temperature, resulting in unstable static electricity elimination effect. Especially in a dry environment, its efficiency is significantly reduced. Therefore, it is of great significance to propose a more effective pretreatment device for battery separator master rolls to solve these problems. Summary of the Invention

[0004] To overcome the above-mentioned drawbacks of the prior art, the present invention provides a pretreatment device for battery separator master rolls.

[0005] Technical solution: A pretreatment device for a battery separator master roll, including a bottom plate, which is the assembly main body of this treatment device. In the middle of the top surface of the bottom plate, a treatment box is fixedly installed. On both upper sides of the box body of the treatment box, through openings are symmetrically provided. On one side of the treatment box, a storage box is fixedly assembled. There is a gap between the treatment box and the storage box and they are interconnected through a connecting pipe. An opening is also provided in the upper part of the storage box facing the treatment box; It also includes a fixing frame fixedly connected to one side of the treatment box. At both ends of the fixing frame, driving rollers are symmetrically installed by electric drive rotation. The driving rollers are used to dock and assemble a winding reel. The winding reel is used to wind the battery separator. One of the driving rollers is located in the storage box. The driving roller in the storage box is used to drive the docked winding reel to wind the battery separator, and the other driving roller is used to drive the docked winding reel to release the battery separator. An electrocorona charge removal mechanism is arranged in the treatment box. The electrocorona charge removal mechanism is used to generate electrocorona in the treatment box and remove the static electricity on the battery separator; The electrocorona charge removal mechanism includes a cylinder 1 fixedly installed on the inner top of the treatment box. The cylinder 1 installs an electrocorona discharger through a mounting plate. The electrocorona discharger is used to generate high-voltage electrocorona in the treatment box; At the through openings on both upper sides of the treatment box, a shielding mechanism is provided. The shielding mechanism includes a telescopic cover embedded in the through openings on both sides of the treatment box. A notch for the battery separator to pass through is opened on the telescopic cover. The telescopic cover has elasticity. On the outer walls of both sides of the treatment box, cylinders 2 are symmetrically and fixedly installed. The telescopic rod of the cylinder 2 is connected to the telescopic cover on the same side through a connecting block. The connecting block on the telescopic cover on the side of the treatment box away from the storage box is fixedly connected to a mounting block. A guiding roller is fixedly installed on the mounting block. The guiding roller is used to guide the battery separator. The guiding roller is adapted to the notch on the telescopic cover on the same side; On the outer side of the box body of the treatment box where the guiding roller is located, a embossing mechanism is provided. The embossing mechanism is used to press micron indentations on the battery separator.

[0006] Further explanation, on the outer side of the box body of the treatment box facing away from the fixing frame, a docking frame is fixedly connected. At one end of the docking frame away from the storage box, a clamping block 1 is clamped and provided. At one end of the docking frame close to the storage box, a clamping block 2 is clamped and provided. The two driving rollers are respectively rotationally matched with the corresponding clamping block 1 and clamping block 2. The side of the storage box close to the docking frame is an opening for the winding reel to be put in. A cover plate is clamped and installed at the opening of the storage box. The clamping block 2 is connected to the cover plate.

[0007] Further explanation, on the inner top of the treatment box, on the side close to the direction where the battery separator enters, a mounting frame is fixedly connected. At the bottom of the mounting frame, a plurality of static sensors are assembled. A controller is provided on the outer shell of the electrocorona discharger. The static sensors are electrically connected to the controller through wires. The controller is used to control the working state of the cylinder 1.

[0008] Further explanation: The embossing mechanism includes a fixing plate fixedly connected to one side of the processing box close to the guiding roller. The bottom surface of the fixing plate is fixedly installed with a cylinder three. A connecting plate is fixedly installed on the telescopic rod of the cylinder three. A embossing roller is electrically driven and rotatably installed on the connecting plate. The embossing roller is located directly above the guiding roller. The roller surface of the embossing roller is provided with micron-level textures. The embossing roller is used to emboss textures on the battery separator, so as to further disperse the static charges aggregated on the battery separator.

[0009] Further explanation: An ion static elimination mechanism is arranged at the top of the inner wall of the processing box. The ion static elimination mechanism is used to generate charged particles to eliminate the static electricity on the battery separator. The ion static elimination mechanism includes a power pump, a delivery pipe and a spray head. The power pump is fixedly installed on the top of the processing box. The power pump is used to connect to an external plasma flow. The power pump is connected to the inside of the processing box through the delivery pipe. The lower part of the delivery pipe is annularly wound around the periphery of the battery separator. A plurality of spray heads are evenly installed at intervals on the inner side of the annular pipeline of the delivery pipe. The spray heads are used to spray ion flow onto the battery separator.

[0010] Further explanation: Two brackets are symmetrically and fixedly connected to the outside of the telescopic cover on the battery separator feeding side of the processing box, one above the other. Cleaning cotton is installed on both brackets. The cleaning cotton on the upper and lower brackets is close to and aligned with the feeding notch on the telescopic cover. The cleaning cotton is used to contact and clean the battery separator.

[0011] Further explanation: Anti-static ropes are symmetrically assembled on the inner sides of the flange plates at both ends of the winding drum. The anti-static ropes are spirally wound around the winding drum. The winding direction of the anti-static ropes and the winding drum for the battery separator is the same. The anti-static ropes are used to contact and conduct the static electricity of the battery separator in the winding state.

[0012] Further explanation: A temperature and humidity sensor is installed on the inner wall of the processing box. The temperature and humidity sensor is used to monitor the conditions inside the processing box in real time. An interface one and an interface two are provided on the inner wall of the processing box. The interface one and the interface two are used to connect to devices for adjusting the temperature and humidity inside the processing box. Under the monitoring of the temperature and humidity sensor, the temperature and humidity conditions suitable for removing static electricity are maintained inside the processing box.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The present invention sets up a dual mechanism of a corona static elimination mechanism and an ion static elimination mechanism. Among them, the corona static elimination mechanism ionizes the air by using high-voltage corona, so that the ionized ions neutralize the static charges on the battery separator. The ion static elimination mechanism sprays ion flow onto the battery separator through a power pump, a delivery pipe and a spray head to further neutralize the static charges on its surface, thereby effectively eliminating the static electricity on the battery separator.

[0015] 2. The present invention can drive the telescopic cover to expand and contract through the second cylinder. The shielding mechanism can adapt to the position changes of the battery separator during the unwinding and rewinding processes, minimize the influence of the external environment on the static electricity treatment inside the treatment box, and before the battery separator enters the treatment box, it is wiped by the cleaning cotton to improve the effect of the subsequent static electricity removal process.

[0016] 3. The present invention can also slightly emboss the battery separator through the embossing mechanism, thereby dispersing the static charges accumulated on the battery separator, increasing the surface roughness of the battery separator, reducing the possibility of being charged with static electricity again, and cooperating with the static electricity eliminating rope on the rewinding cylinder to accelerate the release of the static electricity of the battery separator in the wound state, so that the battery separator is not easily charged with static electricity again. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of the present invention.

[0018] Figure 2 is an exploded view of the docking frame, the first clamping block, the second clamping block and the rewinding cylinder of the present invention.

[0019] Figure 3 is a schematic diagram of the corona discharge mechanism inside the treatment box of the present invention.

[0020] Figure 4 is a schematic diagram of the specific components of the corona discharge mechanism of the present invention.

[0021] Figure 5 is a schematic diagram of the cooperation relationship between the shielding mechanism and the embossing mechanism of the present invention.

[0022] Figure 6 is a schematic diagram of the ion discharge mechanism inside the treatment box of the present invention.

[0023] Figure 7 is a connection diagram of the treatment box, the telescopic cover, the bracket and the cleaning cotton of the present invention.

[0024] Figure 8 is a schematic three-dimensional structure diagram of the rewinding cylinder and the static electricity eliminating rope of the present invention.

[0025] Figure 9 is a schematic diagram of the treatment box, the temperature and humidity sensor, the first interface and the second interface of the present invention.

[0026] Reference numerals in the drawings: 100: battery separator; 1: bottom plate; 2: processing box; 3: storage box; 31: cover plate; 4: connecting pipe; 5: fixing bracket; 51: docking bracket; 511: first clamping block; 512: second clamping block; 6: driving roller; 7: winding drum; 8: corona discharging mechanism; 81: first cylinder; 82: mounting plate; 83: corona discharger; 84: mounting bracket; 85: static sensor; 86: controller; 9: shielding mechanism; 91: telescopic cover; 92: second cylinder; 93: connecting block; 94: mounting block; 95: guiding roller; 10: embossing mechanism; 101: fixing plate; 102: third cylinder; 103: connecting plate; 104: embossing roller; 11: ion discharging mechanism; 111: power pump; 112: delivery pipe; 113: nozzle; 12: bracket; 13: cleaning cotton; 14: static eliminating rope; 15: temperature and humidity sensor; 151: first interface; 152: second interface. Detailed implementation manners

[0027] The preferred embodiments of the present invention will be described in more detail below with reference to the drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0028] Embodiment 1: A pretreatment device for a battery separator master roll, as Figures 1-5As shown in the figure, it includes a bottom plate 1. The bottom plate 1 is the assembly main body of this processing device. In the middle of the top surface of the bottom plate 1, a processing box 2 is fixedly installed. On both upper sides of the box body of the processing box 2, through openings are symmetrically provided. On one side of the processing box 2, a storage box 3 is fixedly assembled. There is a gap between the processing box 2 and the storage box 3 and they are interconnected through a communicating pipe 4. An opening is also provided in the upper part of the side of the processing box 2 facing the storage box 3. It also includes a fixing frame 5 fixedly connected to one side of the processing box 2. At both ends of the fixing frame 5, driving rollers 6 are symmetrically installed and driven electrically. The driving rollers 6 are used for docking and assembling a winding reel 7. The winding reel 7 is used for winding the battery separator 100. One of the driving rollers 6 is located in the storage box 3. The driving roller 6 in the storage box 3 is used to drive the docking winding reel 7 to wind the battery separator 100, and the other driving roller 6 is used to drive the docking winding reel 7 to release the battery separator 100. An electrocorona discharging mechanism 8 is arranged in the processing box 2. The electrocorona discharging mechanism 8 is used to generate electrocorona in the processing box 2 and eliminate the static electricity on the battery separator 100. The electrocorona discharging mechanism 8 includes a cylinder 81 fixedly installed on the inner top of the processing box 2. The cylinder 81 installs an electrocorona discharger 83 through a mounting plate 82. The electrocorona discharger 83 is used to generate high-voltage electrocorona in the processing box 2. The high-voltage electrocorona discharges in the processing box 2 to ionize the air. At this time, under the driving of the two driving rollers 6 to drive the winding reel 7 to unwind the battery separator 100, the battery separator 100 passing through the processing box 2 will be affected by the ionized air, so that the static charges on the battery separator 100 are neutralized by the ions ionized in the air in the processing box 2, thereby eliminating the static electricity on the battery separator 100. On both upper sides of the through openings of the processing box 2, a shielding mechanism 9 is provided. The shielding mechanism 9 includes a telescopic cover 91 embedded in the through openings on both sides of the processing box 2. The telescopic cover 91 is provided with a notch for the battery separator 100 to pass through. The telescopic cover 91 has elasticity. On the outer walls of both sides of the processing box 2, cylinders 92 are symmetrically and fixedly installed. The telescopic rods of the cylinders 92 are connected to the same-side telescopic cover 91 through connecting blocks 93. The connecting block 93 on the telescopic cover 91 on the side of the processing box 2 far from the storage box 3 is fixedly connected to a mounting block 94. A guiding roller 95 is fixedly installed on the mounting block 94. The guiding roller 95 is used to guide the battery separator 100. The guiding roller 95 is adapted to the notch on the same-side telescopic cover 91. On the outer side of the box body of the processing box 2 where the guiding roller 95 is located, a texturing mechanism 10 is provided. The texturing mechanism 10 is used to press micron indentations on the battery separator 100, so that the battery separator 100 is not easily charged with static electricity again without affecting the normal use of the battery separator 100.

[0029] As Figure 1 and Figure 2As shown, a docking frame 51 is fixedly connected to the outer side of the box body of the processing box 2 facing away from the fixing frame 5. A first clamping block 511 is clamped at one end of the docking frame 51 away from the storage box 3, and a second clamping block 512 is clamped at one end of the docking frame 51 close to the storage box 3. The two driving rollers 6 are respectively rotationally matched with the corresponding first clamping block 511 and second clamping block 512. One side of the storage box 3 close to the docking frame 51 is an opening for the winding drum 7 to be placed. A cover plate 31 is clamped and installed at the opening of the storage box 3. The second clamping block 512 is connected to the cover plate 31. By removing the first clamping block 511 and the second clamping block 512 from the docking frame 51, the winding drum 7 for unwinding the battery separator 100 can be conveniently replaced on the driving roller 6.

[0030] As Figure 3 and Figure 4 shown, an installation frame 84 is fixedly connected to the inner top of the processing box 2 on the side close to the inlet direction of the battery separator 100. A plurality of static sensors 85 are assembled at the bottom of the installation frame 84. A controller 86 is provided on the outer shell of the corona discharger 83. The static sensors 85 are electrically connected to the controller 86 through wires. The controller 86 is used to control the working state of the first cylinder 81. Before the battery separator 100 passes through the corona discharger 83 in the processing box 2, the static state of the battery separator 100 is detected in advance by the static sensors 85, and the controller 86 controls the first cylinder 81 to adaptively drive the corona discharger 83 to approach or move away from the battery separator 100, so that the battery separator 100 with different static states can receive corona with appropriate intensity in the processing box 2 to remove static electricity.

[0031] As Figure 1 , Figure 3 and Figure 6 shown, an ion de-electrification mechanism 11 is provided on the inner wall top of the processing box 2. The ion de-electrification mechanism 11 is used to generate charged particles to eliminate the static electricity on the battery separator 100. The ion de-electrification mechanism 11 includes a power pump 111, a delivery pipe 112 and a spray head 113. The power pump 111 is fixedly installed on the top of the processing box 2. The power pump 111 is used to connect to an external plasma flow. The power pump 111 is communicated to the inside of the processing box 2 through the delivery pipe 112. The lower part of the delivery pipe 112 is annularly wound around the periphery of the battery separator 100. A plurality of spray heads 113 are evenly installed at intervals on the inner side of the annular pipeline of the delivery pipe 112. The spray heads 113 are used to spray ion flow onto the battery separator 100 to further neutralize the static charges on the surface of the battery separator 100.

[0032] When using this device to pre-treat the static electricity on the battery separator 100, the operator first removes the first clamping block 511 and the second clamping block 512 from both ends of the docking frame 51 respectively, and removes the cover plate 31 on the storage box 3. Then, the take-up reel 7 wound with the battery separator 100 is slidably clamped onto the driving roller 6 on the unwinding side, and the empty take-up reel 7 is slidably clamped onto the driving roller 6 in the storage box 3 on the winding side. Subsequently, the operator pulls out the battery separator 100 on the take-up reel 7 on the unwinding side, passes it through the through holes on both sides of the processing box 2 and the through hole of the storage box 3, and then connects it to the empty take-up reel 7. Then, the cover plate 31 is covered back onto the storage box 3, and the first clamping block 511 and the second clamping block 512 are reset and clamped back onto the docking frame 51, so that the take-up and pay-off reels 7 on both sides can be limited on the corresponding driving rollers 6, completing the loading operation of the take-up reel 7. Subsequently, the device is enabled to start the static electricity treatment operation. The driving rollers 6 on both sides rotate at the same speed under the drive of the motor, respectively performing the unwinding and winding operations of the battery separator 100. When the battery separator 100 enters the processing box 2, the corona discharge mechanism 8 is enabled to perform ionization treatment on the battery separator 100. At this time, the static electricity sensor 85 monitors the charge density on the surface of the separator in real time and transmits the signal to the controller 86. The controller 86 dynamically adjusts the telescopic amount of the first cylinder 81 according to the charge intensity, so that the corona discharger 83 forms the best discharge distance with the surface of the separator. The high-voltage electric field released by the corona discharger 83 ionizes air molecules, generating a large number of positive and negative ions. These ions adhere to the surface of the battery separator 100 and neutralize the static charges carried on the battery separator 100;Meanwhile, the ion charge removal mechanism 11 is enabled, and the power pump 111 is enabled to evenly transport the external plasma flow through the annular delivery pipe 112 into the processing chamber 2. The nozzle 113 array surrounding the diaphragm sprays a high-density ion flow onto the upper and lower surfaces of the battery diaphragm 100, forming an ion cloud covering the upper and lower surfaces of the membrane material, further enhancing the supplementary treatment of the local high-static electricity area of the battery diaphragm 100 to ensure the uniformity of the charge removal effect. And when the ion flow fills the processing chamber 2, it will enter the storage chamber 3 through the connecting pipe 4, so that the battery diaphragm 100 on the newly wound roll after static electricity treatment in the storage chamber 3 can be directly exposed to the ion environment in the storage chamber 3, reducing the chance of the battery diaphragm 100 being charged again during winding. As the battery diaphragm 100 is gradually transferred from the unwinding side to the winding drum 7 on the winding side, at this time, the cylinder two 92 on both sides of the processing chamber 2 is dynamically controlled through a preset program. According to the position change during the winding process of the battery diaphragm 100, the cylinder two 92 can adaptively drive the telescopic cover 91 to expand and contract at the opening of the storage chamber 3 through the connecting block 93, so that the height of the notch on the telescopic cover 91 for the battery diaphragm 100 to pass through can be adaptively adjusted. During the expansion and contraction process of the telescopic cover 91, the cylinder two 92 can also synchronously drive the guide roller 95 to rise and fall through the mounting block 94, so that the guide roller 95 can always align with the notch of the telescopic cover 91 on the feeding side of the processing chamber 2 and smoothly guide the battery diaphragm 100, thereby avoiding direct contact between the notch on the telescopic cover 91 and the battery diaphragm 100. At the same time, the telescopic cover 91 can prevent external air disturbances from interfering with the ionization environment in the box, improving the stability of removing static electricity from the battery diaphragm 100.;

[0033] Example 2: On the basis of Example 1, as Figure 2 , Figure 3 and Figure 5 shown, the embossing mechanism 10 includes a fixing plate 101 fixedly connected to one side of the processing chamber 2 close to the guide roller 95. The bottom surface of the fixing plate 101 is fixedly installed with a cylinder three 102. A connecting plate 103 is fixedly installed on the telescopic rod of the cylinder three 102. An embossing roller 104 is electrically driven and rotatably installed on the connecting plate 103. The embossing roller 104 is located directly above the guide roller 95. The roller surface of the embossing roller 104 is provided with micron-level textures. The embossing roller 104 is used to emboss textures on the battery diaphragm 100, so as to further disperse the static charges aggregated on the battery diaphragm 100.

[0034] As Figure 7As shown, on the outer side of the telescopic cover 91 on the battery separator 100 feeding side of the processing box 2, two brackets 12 are symmetrically and fixedly connected up and down. Cleaning cotton 13 is installed on each of the brackets 12. The cleaning cotton 13 on the upper and lower brackets 12 is close to and aligned with the feeding notch on the telescopic cover 91. The cleaning cotton 13 is used to contact and clean the battery separator 100, so that before the battery separator 100 enters the processing box 2 for static elimination, it can be wiped and cleaned by the cleaning cotton 13, avoiding the influence of dust and other impurities on the surface of the battery separator 100 on the removal of static electricity.

[0035] As Figure 2 and Figure 8 shown, on the inner sides of the flange plates at both ends of the winding drum 7, static eliminator ropes 14 are symmetrically assembled. The static eliminator ropes 14 are spirally wound around the winding drum 7. The winding direction of the static eliminator ropes 14 and the winding drum 7 for the battery separator 100 is the same. The static eliminator ropes 14 are used to contact and conduct the static electricity of the battery separator 100 in the wound state, accelerating the loss and consumption of the static charges on the battery separator 100.

[0036] As Figure 9 shown, a temperature and humidity sensor 15 is installed on the inner wall of the processing box 2. The temperature and humidity sensor 15 is used to monitor the conditions inside the processing box 2 in real time. On the inner wall of the processing box 2, there are an interface one 151 and an interface two 152. The interface one 151 and the interface two 152 are used to externally connect devices for adjusting the temperature and humidity inside the processing box 2. Under the monitoring of the temperature and humidity sensor 15, the temperature and humidity conditions suitable for static elimination are maintained inside the processing box 2, enabling the corona static elimination mechanism 8 and the ion static elimination mechanism 11 to effectively remove the static electricity on the battery separator 100.

[0037] To further improve the electrostatic removal effect on the battery separator 100, environmental parameters are collected in real time through the temperature and humidity sensors 15 on the inner wall of the processing chamber 2. Devices for temperature and humidity adjustment are externally connected through interface one 151 and interface two 152, so that the temperature and humidity in the adjustment chamber can be maintained within the optimal range for the ionization reaction. A relatively high humidity can enhance the electrical conductivity of the air and improve the corona discharge efficiency, while a stable temperature can prevent the deformation of the separator caused by thermal expansion and contraction. Thus, the electrostatic removal efficiency of the battery separator 100 is optimized. When the battery separator 100 penetrates into the processing chamber 2 through the feed port, the cylinder three 102 drives the embossing roller 104 to press down on the battery separator 100 on the guide roller 95 through the connecting plate 103. And the cylinder three 102 drives the embossing roller 104 to act and contact the battery separator 100 with a controllable pressure, so that the micron-level texture on the roller surface of the embossing roller 104 forms regularly distributed tiny indentations on the surface of the film material. The indentations increase the surface roughness, break the continuous aggregation path of static charges, reduce the surface resistivity, and thus inhibit the regeneration of static electricity. And before the battery separator 100 enters the processing chamber 2, it will also pass through the cleaning cotton 13 on the feed side of the processing chamber 2. The cleaning cotton 13 on both sides elastically deforms and presses the battery separator 100 passing through it, and uses the adsorption and friction of cotton fibers to remove impurities such as dust and fibers attached to the surface. The cleanliness of the surface of the cleaned battery separator 100 is improved, thereby reducing the interference of subsequent impurities on the ionization process. Since the static elimination ropes 14 are wound around the inner walls of the flange plates at both ends of the take-up reel 7, and the winding directions of the static elimination ropes 14 and the battery separator 100 are the same, the static elimination ropes 14 can synchronously contact both ends of the battery separator 100 on the take-up reel 7 on the unwinding and winding sides. The static elimination ropes 14 continuously conduct away the static electricity on the surface of the film material during the entire winding process, further reducing the risk of the battery separator 100 being charged with static electricity. Thus, efficient and stable electrostatic elimination and surface functionalization treatment are achieved.

[0038] The above has introduced the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on the present application.

Claims

1. A pretreatment device for a battery separator master roll, comprising a bottom plate (1), on which a processing box (2) is fixedly arranged. Through openings are symmetrically formed on both sides of the processing box (2). A storage box (3) is fixedly arranged on one side of the processing box (2), and the processing box (2) and the storage box (3) are connected and communicated through a connecting pipe (4). It is characterized in that It further includes a fixing frame (5) fixedly connected to one side of the processing box (2). Driving rollers (6) are symmetrically and electrically driven and rotatably installed at both ends of the fixing frame (5). The driving rollers (6) are used for docking and assembling a winding drum (7). One of the driving rollers (6) is located in the storage box (3), and a corona discharging mechanism (8) is arranged in the processing box (2). The corona discharging mechanism (8) includes a cylinder one (81) fixedly installed at the inner top of the processing box (2), and a corona discharger (83) is installed on the cylinder one (81) through a mounting plate (82). Blocking mechanisms (9) are arranged at the through openings on both sides of the processing box (2). The blocking mechanism (9) includes telescopic covers (91) installed at the through openings on both sides of the processing box (2). A notch for the battery separator (100) to pass through is formed on the telescopic cover (91). Cylinders two (92) are symmetrically and fixedly arranged outside both sides of the processing box (2). The telescopic rods of the cylinders two (92) are connected to the telescopic cover (91) on the same side through a connecting block (93). A mounting block (94) is fixedly connected to the connecting block (93) on the side of the processing box (2) away from the storage box (3). A guiding roller (95) is fixedly arranged on the mounting block (94), and the guiding roller (95) is adapted to the notch on the telescopic cover (91) on the same side. A embossing mechanism (10) is arranged outside the processing box (2). The embossing mechanism (10) includes a fixing plate (101) fixedly connected to the side of the processing box (2) close to the guiding roller (95). A cylinder three (102) is fixedly installed on the bottom surface of the fixing plate (101). A connecting plate (103) is fixedly installed on the telescopic rod of the cylinder three (102). An embossing roller (104) is electrically driven and rotatably installed on the connecting plate (103). The embossing roller (104) is located directly above the guiding roller (95), and micron-level textures are arranged on the roller surface of the embossing roller (104). An ion discharging mechanism (11) is arranged at the inner top of the wall of the processing box (2). The ion discharging mechanism (11) is used for generating charged particles to eliminate the static electricity on the battery separator (100). The ion discharging mechanism (11) includes a power pump (111), a delivery pipe (112) and a spray head (113). The power pump (111) is fixedly installed on the top of the processing box (2), and the power pump (111) is used for connecting to an external plasma flow. The power pump (111) is communicated to the inside of the processing box (2) through the delivery pipe (112). The lower part of the delivery pipe (112) is annular, and a plurality of spray heads (113) are evenly installed at intervals on the inner side of the annular pipeline of the delivery pipe (112).

2. The pretreatment device for a battery separator master roll according to claim 1, characterized in that, On the outer side of the box body of the processing box (2) facing away from the fixing frame (5), a docking frame (51) is fixedly connected. At one end of the docking frame (51) away from the storage box (3), a first clamping block (511) is clamped and provided. At one end of the docking frame (51) close to the storage box (3), a second clamping block (512) is clamped and provided. The two driving rollers (6) are respectively rotationally matched with the corresponding first clamping block (511) and second clamping block (512). On one side of the storage box (3) close to the docking frame (51), there is an opening for the winding drum (7) to be placed. A cover plate (31) is clamped and installed at the opening of the storage box (3). The second clamping block (512) is connected to the cover plate (31).

3. The pretreatment device for a battery separator master roll according to claim 2, characterized in that, On the inner top of the processing box (2) close to the feeding direction of the battery separator (100), a mounting frame (84) is fixedly connected. An electrostatic sensor (85) is assembled at the bottom of the mounting frame (84). A controller (86) is provided on the outer shell of the corona discharger (83). The electrostatic sensor (85) is electrically connected to the controller (86) through a wire. The controller (86) is used to control the working state of the first cylinder (81).

4. The pretreatment device for a battery separator master roll according to claim 3, characterized in that, On the outer side of the telescopic cover (91) on the feeding side of the battery separator (100) of the processing box (2), two brackets (12) are symmetrically and fixedly connected up and down. Cleaning cotton (13) is installed on each of the brackets (12). The cleaning cotton (13) on the upper and lower brackets (12) is located at the feeding notch on the telescopic cover (91). The cleaning cotton (13) is used to contact and clean the battery separator (100).

5. The pretreatment device for a battery separator master roll according to claim 4, characterized in that, On the inner sides of the flange plates at both ends of the winding drum (7), static eliminator ropes (14) are symmetrically assembled. The static eliminator ropes (14) are spirally wound around the winding drum (7). The static eliminator ropes (14) and the winding drum (7) wind the battery separator (100) in the same direction.

6. The pretreatment device for a battery separator master roll according to claim 5, characterized in that, A temperature and humidity sensor (15) is installed on the inner wall of the processing box (2). The temperature and humidity sensor (15) is used to monitor the conditions inside the processing box (2) in real time. An interface one (151) and an interface two (152) are provided on the inner wall of the processing box (2). The interface one (151) and the interface two (152) are used to externally connect devices for adjusting the temperature and humidity inside the processing box (2).

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