An aerogel battery separator structure and its manufacturing device

Abstract

The present invention discloses an aerogel battery separator structure and its manufacturing device, belonging to the technical field of battery separators. It includes an aerogel separator and a manufacturing device for thermocompression assembly thereof. By providing an aerogel separator with a buffer film and a silica gel frame, during the cyclic use of blade batteries, the buffer airbag buffers and isolates two blade batteries, preventing the blade batteries from directly contacting the aerogel separator, ensuring that the aerogel separator does not shift after long-term use. By providing an assembly mechanism cooperating with a conveying frame, a two-stage thermocompression process in which the movable pressing plate and the fixed pressing plate are linked is achieved. The movable pressing plate with a closed ring first pre-presses and seals the edge of the aerogel separator, and then the central area is thermocompressed by the high-temperature fixed pressing plate, ensuring that the inert gas is completely sealed during the gradient pressure process, forming a buffer airbag between the buffer film and the aerogel pad, achieving the effect of integrally producing the aerogel separator by thermocompression.

Description

Technical Field

[0001] The present invention relates to the technical field of battery separators, and particularly to an aerogel battery separator structure and a manufacturing device thereof. Background Art

[0002] Aerogel is a new material with a nano-porous structure, having excellent physical and chemical properties such as high porosity, low density, high specific surface area, and excellent heat insulation. It shows potential application prospects in the battery field. Its applications in batteries mainly focus on the optimization of electrode materials, electrolytes, or battery components.

[0003] When implementing the hot pressing composite process of polyimide (PI) film to enhance the dielectric strength and radiation resistance of the system, due to the inherent insufficient intrinsic flexibility and ultra-thin structural characteristics of the aerogel material, the periodic volume deformation caused during the charge and discharge cycle of the blade battery will lead to a non-uniform mechanical stress field distribution on the separator.

[0004] This dynamic stress loading mechanism will trigger the micro-crack propagation and interface delamination effect at the aerogel / PI composite interface, resulting in cumulative structural creep after long-term cycling, and ultimately causing the macroscopic displacement of the aerogel separator to exceed the critical threshold. This displacement phenomenon will damage the continuous heat insulation barrier and dielectric isolation layer between adjacent battery cells, thereby increasing the probability of thermal runaway propagation and the risk of dielectric failure, significantly affecting the safe operating window of the battery module. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that when the existing aerogel is used as a battery separator, due to the deformation of the blade battery during charging, it is compressed and deformed, and after long-term use, the battery separator shifts, exposing gaps, resulting in a decrease in heat insulation and insulation between two adjacent blade batteries. Thus, an aerogel battery separator structure and a manufacturing device thereof are proposed.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An aerogel battery separator structure includes an aerogel separator, and the aerogel separator includes an aerogel pad and a buffer film arranged in sequence from the inside to the outside. The buffer film is provided in a double layer and is symmetrically distributed with respect to the aerogel separator.

[0008] Preferably, the buffer film is made of polyimide and is attached to the outer surface of the aerogel pad. Buffer airbags are provided on the buffer film, and a thermosetting epoxy adhesive is coated on the edges of the buffer film and the aerogel pad.

[0009] Preferably, a silica gel frame is provided around the aerogel separator, the buffer film is installed on the surface of the silica gel frame, and the silica gel frame is formed by hot pressing two layers of silica gel borders.

[0010] A manufacturing device for an aerogel battery separator structure, comprising a hot press table for manufacturing the aerogel separator. A conveying mechanism is arranged outside the hot press table for conveying each layer of raw materials of the aerogel separator. An assembling mechanism is arranged on the hot press table for hot pressing and assembling each layer of the aerogel separator;

[0011] The conveying mechanism includes conveyor belts rotationally symmetrically distributed around the hot press table. The conveyor belts intermittently convey aerogel pads through a stepping motor. Conveying frames for storing aerogel pads are placed on the conveyor belts. A placing rack is connected to the inside of the conveying frames by bolts. An interval assembling table is arranged between the conveyor belts and the hot press table. A feeding component is arranged inside the interval assembling table for providing a buffer film and a silica gel frame;

[0012] A servo motor is arranged on the top of the interval assembling table. The output shaft of the servo motor is fixed with an assembling frame. An electric push rod is arranged on the top of the assembling frame. An electromagnetic plate magnetically attracted to the conveying frame is arranged at the end of the electric push rod. An inflation needle is also arranged on the top of the assembling frame. The inflation needle is communicated with an inflation tank storing inert gas inside through a connecting pipe;

[0013] The feeding component includes a feeding base arranged on one side of the interval assembling table. A feeding module is arranged on the feeding base. A negative pressure suction cup is arranged on the feeding module. An air pressure regulating push rod is connected to the inner wall of the negative pressure suction cup through an air pressure regulating plug;

[0014] The assembling mechanism includes an assembling base arranged at the rotation center of the plurality of interval assembling tables. A hot press frame and a supporting bracket are arranged on the top of the assembling base. Hot press plates are arranged on the opposite sides of the hot press frame and the supporting bracket. The hot press plates are composed of a movable press plate and a fixed press plate. Electric heating coils for heating are arranged inside the hot press plates. A driving module for the reverse lifting of the hot press frame and the supporting bracket is arranged inside the assembling base.

[0015] Preferably, an inflation hole adapted to the inflation needle is opened on the conveying frame, and both the upper and lower surfaces of the conveying frame are open. A limiting groove is opened on the top of the placing rack.

[0016] Preferably, a thermosetting glue coating component is arranged on the interval assembling table. The thermosetting glue coating component includes a coating glue cylinder. A coating roller is rotatably arranged at the bottom of the coating glue cylinder. The coating roller is composed of an edge coating wheel and interval coating rods. A glue outlet adapted to the coating roller is opened on the coating glue cylinder, and a lifting hydraulic cylinder is arranged at the bottom of the coating glue cylinder.

[0017] Preferably, a deflection port is opened on one side of the feeding module at the bottom away from the interval assembling table to provide a flipping space for the negative pressure suction cup, and a rubber ring for sealing is arranged on the opposite side of the negative pressure suction cup.

[0018] Preferably, a coating pretreatment assembly is provided on the top of the feeding base. The coating pretreatment assembly includes a wetting box, in which a wetting roller is rotatably arranged. A hydrophilic pad is adhered to the outer surface of the wetting roller, and a saturated carbonic acid solution is contained in the wetting box.

[0019] Preferably, buffer arc grooves are provided on the opposite sides of the fixed pressing plate, and the bottom of the movable pressing plate at the bottom is fixed to the top of the supporting bracket through a compression spring column, maintaining a symmetrical state with the movable pressing plate at the top.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. By providing the aerogel interlayer of the buffer film and the silica gel frame, when the blade battery is recycled, through the buffer airbag arranged in the buffer film, the two blade batteries can be buffered and isolated, avoiding direct contact between the blade battery and the aerogel interlayer. After long-term use, it will shift, and the silica gel frame provides support for the aerogel interlayer to prevent displacement or deformation, improving the sealing performance of the barrier part, preventing the electrolyte of a single battery from being damaged and leaking, affecting the normal power supply of adjacent blade batteries, and achieving the effect of improving the use stability of the aerogel interlayer.

[0022] 2. By providing the assembly mechanism in cooperation with the conveying frame, the two-stage hot pressing process of the linkage between the movable pressing plate and the fixed pressing plate forms a stepped dynamic hot pressing and sealing system. First, the movable pressing plate with a closed ring pre-presses and seals the edge of the aerogel interlayer, and then the high-temperature fixed pressing plate hot presses the central area to ensure that the inert gas is completely sealed during the gradient pressurization process, enabling a buffer airbag to be formed between the buffer film and the aerogel pad, achieving the effect of integrally producing the aerogel interlayer by hot pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of an aerogel battery interlayer structure proposed by the present invention;

[0024] Figure 2 It is an exploded view of the structure of an aerogel battery interlayer structure proposed by the present invention;

[0025] Figure 3 It is a schematic structural diagram of a manufacturing device for an aerogel battery interlayer structure proposed by the present invention;

[0026] Figure 4 It is an exploded view of the structure of a manufacturing device for an aerogel battery interlayer structure proposed by the present invention;

[0027] Figure 5 It is a schematic structural diagram of a conveying mechanism in a manufacturing device for an aerogel battery interlayer structure proposed by the present invention;

[0028] Figure 6 The structural explosion view of the conveying mechanism in a manufacturing device for an aerogel battery separator structure proposed by the present invention;

[0029] Figure 7 The structural schematic diagram of the feeding assembly in a manufacturing device for an aerogel battery separator structure proposed by the present invention;

[0030] Figure 8 The internal structural schematic diagram of the cross-section of the feeding assembly in a manufacturing device for an aerogel battery separator structure proposed by the present invention;

[0031] Figure 9 For the present invention Figure 8 The enlarged schematic diagram of the structure at position A;

[0032] Figure 10 The structural schematic diagram of the conveying frame in a manufacturing device for an aerogel battery separator structure proposed by the present invention;

[0033] Figure 11 The structural schematic diagram of the coating cylinder and the coating roller in a manufacturing device for an aerogel battery separator structure proposed by the present invention;

[0034] Figure 12 The structural schematic diagram of the assembling mechanism in a manufacturing device for an aerogel battery separator structure proposed by the present invention;

[0035] Figure 13 The structural explosion view of the assembling mechanism in a manufacturing device for an aerogel battery separator structure proposed by the present invention;

[0036] Figure 14 The structural assembly drawing of the hot pressing frame and the hot pressing plate in a manufacturing device for an aerogel battery separator structure proposed by the present invention.

[0037] Reference numerals: 1, aerogel separator; 11, aerogel pad; 12, buffer film; 2, silica gel frame; 3, hot pressing table; 4, conveyor belt; 41, conveying frame; 411, placing rack; 5, interval assembling table; 51, servo motor; 52, assembling frame; 53, electric push rod; 531, electromagnetic plate; 54, inflation needle; 55, inflation tank; 6, feeding seat; 61, feeding module; 62, negative pressure suction cup; 63, air pressure regulating plug; 64, air pressure regulating push rod; 7, assembling seat; 71, hot pressing frame; 72, supporting bracket; 73, hot pressing plate; 731, movable pressing plate; 732, fixed pressing plate; 74, compression spring column; 75, driving module; 8, coating cylinder; 81, coating roller; 811, edge coating wheel; 812, interval coating rod; 9, wetting box; 91, wetting roller. Detailed implementation manners

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] Example 1, referring to Figure 1 and Figure 2 , a gas gel battery separator structure includes a gas gel separator 1. The gas gel separator 1 includes a gas gel pad 11 and a buffer film 12 arranged in sequence from the inside to the outside. The buffer film 12 is arranged in a double layer and is symmetrically distributed with respect to the gas gel separator 1;

[0042] The buffer film 12 is made of polyimide and is attached to the outer surface of the gas gel pad 11. Buffer air bags are arranged on the buffer film 12, and a thermosetting epoxy adhesive is coated on the edges of the buffer film 12 and the gas gel pad 11;

[0043] Furthermore, a silica gel frame 2 is arranged around the gas gel separator 1. The buffer film 12 is installed on the surface of the silica gel frame 2, and the silica gel frame 2 is formed by hot pressing two layers of silica gel borders;

[0044] It should be noted that: The aerogel interlayer 1 is arranged between two blade batteries and is made of heat-insulating materials. By coating thermosetting epoxy glue on the aerogel pad 11, after the buffer film 12 is laminated and hot-pressed, the buffer film 12 can be sealed on the outer surface of the aerogel pad 11. And through the buffer airbags arranged in the buffer film 12, the two blade batteries can be buffered and isolated. When the blade batteries deform during charging and discharging, the buffer airbags can fit the blade batteries during the deformation process, preventing the blade batteries from directly contacting the aerogel interlayer 1 and causing it to shift;

[0045] The further advantage of adopting the above is that: An aerogel pad 11 fitting groove is provided on the silicone frame. When the buffer film 12 is hot-pressed onto the aerogel pad 11, it can be hot-pressed synchronously to form a complete silicone frame 2, forming the aerogel interlayer 1. Thus, the silicone frame 2 provides support for the aerogel interlayer 1 to prevent it from shifting or deforming, and improves the sealing performance of the barrier part, preventing the electrolyte of a single battery from being damaged and leaking, which affects the normal power supply of adjacent blade batteries.

[0046] Based on Embodiment 1, Embodiment 2 is proposed. As Figures 3 to 14 shown, a manufacturing device for an aerogel battery interlayer structure includes a hot press table 3 for manufacturing the aerogel interlayer 1. A conveying mechanism is arranged outside the hot press table 3 for conveying each layer of raw materials of the aerogel interlayer 1. An assembling mechanism is arranged on the hot press table 3 for hot-pressing and assembling each layer of the aerogel interlayer 1;

[0047] It should be noted that: The aerogel pad 11, the buffer film 12 and the silicone frame 2 of the aerogel interlayer 1 are conveyed and placed on the conveying mechanism by a suction cup type conveying device. Along with the operation of the conveying mechanism, they meet the buffer film 12 and the silicone frame 2 and are conveyed to the assembling mechanism together for hot-pressing and assembling. Then, after the assembly is completed, the aerogel interlayer 1 is placed on the conveyor belt 4 again through the conveying mechanism, achieving the purpose of conveying the raw materials before the assembly and the finished product after the assembly of the aerogel interlayer 1;

[0048] Based on the above, the suction cup type conveying device is an existing device, which only provides the conveying service of the aerogel pad 11 for the conveying frame 41 and will not be elaborated further hereinafter.

[0049] As Figures 3 to 6 shown, the conveying mechanism includes conveyor belts 4 that are rotationally symmetrically distributed around the hot press table 3. The conveyor belts 4 intermittently convey the aerogel pads 11 through a stepping motor. A conveying frame 41 for storing the aerogel pads 11 is placed on the conveyor belts 4. A placing rack 411 is connected to the conveying frame 41 by bolts. An interval assembling table 5 is arranged between the conveyor belts 4 and the hot press table 3. A feeding component is arranged inside the interval assembling table 5 for providing the buffer film 12 and the silicone frame 2;

[0050] It should be noted that the holding racks 411 are arranged in two groups, and each group of holding racks 411 is composed of two horizontally fixed holding rods. Before conveying the aerogel pad 11, the distance between the holding racks 411 is adjusted to a spacing that matches the size of the aerogel pad 11 by rotating the bolts through manual calibration, thereby facilitating the subsequent conveying of the buffer film 12 and the silicone frame 2 to the upper and lower sides of the aerogel pad 11 through the feeding assembly so that they are in a mutually aligned state.

[0051] like Figure 5 As shown, a servo motor 51 is disposed on the top of the spacer assembly table 5, an assembly frame 52 is fixed to the output shaft of the servo motor 51, an electric push rod 53 is disposed on the top of the assembly frame 52, an electromagnetic plate 531 that is magnetically attracted to the conveying frame 41 is disposed at the end of the electric push rod 53, and an inflation needle 54 is also disposed on the top of the assembly frame 52, and the inflation needle 54 is connected to an inflation tank 55 that stores inert gas through a connecting tube;

[0052] Among them, the inert gas can be nitrogen, and a gas solenoid valve is provided in the connecting pipe to control the total amount of gas ejected outward from the inflation needle 54, and an inflation valve is provided at the bottom of the inflation tank 55 to replenish nitrogen after each inflation of the aerogel barrier 1, so as to ensure that the air pressure in the inflation tank 55 remains constant, thereby ensuring that the air pressure of the inflation needle 54 remains constant each time it is inflated;

[0053] Based on the above, the gas solenoid valve and the inflation valve are permanent structures of the existing inflation equipment, which are existing technologies and will not be described in detail in the following.

[0054] Furthermore, the conveying frame 41 is provided with an inflation hole adapted to the inflation needle 54, and the upper and lower surfaces of the conveying frame 41 are both open, and a limiting groove is provided on the top of the containing frame 411;

[0055] It should be noted that: when the aerogel pad 11 is transported to the same level as the assembly frame 52 through the conveyor belt 4, the electric push rod 53 is started, and the conveying frame 41 is picked up by the energized electromagnetic plate 531, and after the conveying frame 41 moves to the top of the assembly frame 52, the inflation needle 54 is made to fit the upper and lower sides of the aerogel pad 11, and after the buffer film 12 moves to fit the surface of the aerogel pad 11, the inflation needle 54 is used to inflate the fitting area of ​​the two to provide an air source for the buffer airbag.

[0056] like Figures 6 to 9 As shown, the feeding assembly includes a feeding seat 6 arranged on one side of the spacer assembly table 5, a feeding module 61 is arranged on the feeding seat 6, a negative pressure suction cup 62 is arranged on the feeding module 61, and the inner wall of the negative pressure suction cup 62 is connected to an air pressure regulating push rod 64 through an air pressure regulating plug 63;

[0057] Further, a deflection opening is provided on one side of the feeding module 61 at the bottom, away from the spaced assembly table 5, to provide a flipping space for the negative pressure suction cup 62, and a rubber ring for sealing is provided on the opposite side of the negative pressure suction cup 62;

[0058] It should be noted that when the servo motor 51 is started and the conveying frame 41 on the assembly frame 52 is conveyed to the position corresponding to the feeding base 6, the feeding module 61 is started to drive the negative pressure suction cup 62 to pick up the buffer film 12 and the silica gel frame 2 placed on the feeding base 6. Under the operation of the feeding module 61, it is moved towards the assembly frame 52, and finally the buffer film 12 and the silica gel frame 2 are attached to the upper and lower sides of the aerogel pad 11, thus completing the alignment and attachment operation of each layer of raw materials before hot pressing the aerogel interlayer 1;

[0059] Based on the above, two feeding modules 61 for sucking the upper and lower sides of the aerogel pad 11 are arranged side by side up and down, and the feeding module 61 is set as a linear sliding module, which can pick up the buffer film 12 and the silica gel frame 2 placed side by side up and down on the feeding base 6. The silica gel frame 2 is placed above the buffer film 12, and the size of the edge of the silica gel frame 2 is larger than that of the buffer film 12. During the suction process by the negative pressure suction cup 62, the edge part of the silica gel frame 2 is also sucked by the negative pressure suction cup 62;

[0060] Furthermore, based on the above, during the suction process of the buffer film 12 and the silica gel frame 2 by the negative pressure suction cup 62, the negative pressure suction cup 62 contacts the buffer film 12 and the silica gel frame 2 in advance, and then the air pressure adjusting push rod 64 is started to move in a direction away from the negative pressure suction cup 62, so as to form a negative pressure in the negative pressure suction cup 62. Thus, when the feeding module 61 drives the negative pressure suction cup 62 to move, through the suction force of the negative pressure suction cup 62, it is ensured that the buffer film 12 and the silica gel frame 2 will not shift or fall off;

[0061] The advantage of adopting the above is that: at the initial stage of starting the feeding module 61, the negative pressure suction cup 62 responsible for sucking the buffer film 12 and the silica gel frame 2 below the aerogel pad 11 is in the initial downward state. After the negative pressure suction cup 62 picks up through negative pressure, the lead screw arranged in the feeding module 61 will drive the negative pressure suction cup 62 to rotate in the reverse direction until it rotates to the vertically upward state. When the feeding module 61 continues to work, it will drive this negative pressure suction cup 62 to cross the deflection opening and maintain the vertically upward state, so as to attach the picked-up buffer film 12 and silica gel frame 2 below the aerogel pad 11. When the feeding module 61 drives in the reverse direction, the negative pressure suction cup 62 is flipped downward at the deflection opening and restored to the initial state with the negative pressure suction cup 62 facing downward, so that the buffer film 12 and the silica gel frame 2 can be quickly attached to the surface of the aerogel pad 11 in the required state.

[0062] Such as Figures 12 to 14As shown in the figure, the assembly mechanism includes an assembly base 7 disposed at the rotation center of a plurality of spaced assembly platforms 5. At the top of the assembly base 7, there are a hot pressing frame 71 and a supporting bracket 72. On the opposite sides of the hot pressing frame 71 and the supporting bracket 72, there are hot pressing plates 73. The hot pressing plate 73 is composed of a movable pressing plate 731 and a fixed pressing plate 732. An electric heating coil for supplying heat is provided inside the hot pressing plate 73. A driving module 75 for driving the hot pressing frame 71 and the supporting bracket 72 to move up and down in opposite directions is provided inside the assembly base 7;

[0063] Further, a buffer arc groove is provided on the opposite side of the fixed pressing plate 732, and the bottom of the movable pressing plate 731 at the bottom is fixed to the top of the supporting bracket 72 through a compression spring column 74, maintaining a symmetrical state with the movable pressing plate 731 at the top;

[0064] It should be noted that when the buffer film 12 and the silica gel frame 2 are attached to the surface of the aerogel pad 11 and driven by the servo motor 51 to rotate to the position corresponding to the assembly base 7, the driving module 75 is started to drive the hot pressing frame 71 and the supporting bracket 72 to move in the closing direction, and the hot pressing plate 73 is heated by the electric heating coil to perform hot pressing forming on each layer of the aerogel interlayer 1 to form the aerogel interlayer 1;

[0065] Based on the above, the driving parts of the driving module 75 and the hot pressing frame 71 and the supporting bracket 72 are set as lead screws with opposite spiral directions, so that when the motor in the driving module 75 rotates in one direction, the hot pressing frame 71 and the supporting bracket 72 can be driven to move in the closing or separating direction;

[0066] Based on the above further, when the hot pressing frame 71 and the supporting bracket 72 are closed, the first to contact the buffer film 12 is the movable pressing plate 731, and a sealing ring is provided between the movable pressing plates 731, which can seal the edge area of the aerogel interlayer 1 when the movable pressing plate 731 and the fixed pressing plate 732 subsequently hot press the aerogel interlayer 1, so as to ensure that during the hot pressing assembly process of the inert gas, it can be sealed inside the aerogel interlayer 1 to form a buffer airbag;

[0067] Based on the above further, when the movable pressing plate 731 closest to the aerogel interlayer 1 is attached to its surface, the conveying frame 41 can be driven to move outward of the assembly frame 52 through the electric push rod 53, and the inflation needle 54 is withdrawn from between the aerogel pad 11 and the buffer film 12 to avoid damaging the sealing of the edge of the aerogel interlayer 1 during the hot pressing process;

[0068] The further advantages of adopting the above are as follows: There are two sets of compression spring columns 74, and each set is symmetrically arranged at the bottom of the movable pressure plate 731. When the support bracket 72 and the hot pressing frame 71 are not closed, the movable pressure plate 731 in the support bracket 72 can be supported upward by the compression spring columns 74 to a state symmetrically arranged with the movable pressure plate 731 in the hot pressing frame 71, so as to pre-hot press the edge area of the aerogel interlayer 1, ensuring that a buffer airbag is formed when the buffer arc groove of the fixed pressure plate 732 hot presses the aerogel interlayer 1, which is convenient for subsequent installation between the blade batteries to adapt to the deformation occurring during their cyclic use.

[0069] As Figure 11 shown, a thermosetting glue coating assembly is arranged on the spaced assembly table 5. The thermosetting glue coating assembly includes a coating glue cylinder 8. A coating roller 81 is rotatably arranged at the bottom of the coating glue cylinder 8. The coating roller 81 is composed of an edge coating wheel 811 and spaced coating rods 812. A glue outlet adapted to the coating roller 81 is opened on the coating glue cylinder 8, and a lifting hydraulic cylinder is arranged at the bottom of the coating glue cylinder 8. When the aerogel interlayer 1 after hot pressing and assembly is conveyed onto the conveyor belt 4 by the electric push rod 53, the lifting hydraulic cylinder is started to make the coating glue cylinder 8 descend, so as not to coat the thermosetting epoxy glue on the aerogel interlayer 1 on the conveying frame 41 again.

[0070] It should be noted that: During the process of conveying the aerogel pad 11 in the conveying frame 41 to the assembly frame 52 by the electric push rod 53, the edge coating wheel 811 of the coating roller 81 can perform edge coating on both sides of the aerogel pad 11 close to the placing rack 411. Then, when the edge coating wheel 811 moves along with the aerogel pad 11 and rotates itself, it drives the spaced coating rods 812 to perform spaced coating on the surface of the aerogel pad 11, so as to adapt to the subsequent hot solid adhesion of the contact part between the buffer film 12 and the aerogel pad 11 when forming a buffer airbag in the buffer film 12, thereby improving the structural stability of the buffer airbag.

[0071] As Figure 8 and Figure 9 shown, a coating pretreatment assembly is arranged on the top of the feeding seat 6. The coating pretreatment assembly includes a wetting box 9. A wetting roller 91 is rotatably arranged in the wetting box 9. A hydrophilic pad is adhered to the outer surface of the wetting roller 91, and a saturated carbonic acid solution is placed in the wetting box 9.

[0072] It should be noted that: During the process of conveying the buffer film 12 and the silica gel frame 2 of the silica gel frame on the negative pressure suction cup 62 to the conveying frame 41 driven by the servo motor 51 to rotate to the position closest to the feeding module 61, the saturated carbonic acid solution in the wetting box 9 is absorbed by the wetting roller 91 and coated on the opposite side of the buffer film 12 and the silica gel frame 2. Thus, when they come into contact with the aerogel pad 11, they can be adhered to each other through the carbonic acid solution. And during the hot pressing process, the carbonic acid solution decomposes into water and carbon dioxide to supplement the gas in the buffer airbag, achieving the effect of self-supplementing gas in the buffer airbag. Therefore, during the hot pressing process, there is no need to insert the inflation needle 54 into the fitting part of the three again, which would damage the sealing performance of the buffer airbag.

[0073] Working principle: When manufacturing the aerogel interlayer 1 of the present invention, when the aerogel pad 11 is conveyed by the conveyor belt 4 to be level with the assembly frame 52, the electric push rod 53 is started at this time. The electromagnetic plate 531 after being energized picks up the conveying frame 41. And after the conveying frame 41 moves to the top of the assembly frame 52, the inflation needle 54 is made to fit on the upper and lower sides of the aerogel pad 11. After waiting for the buffer film 12 to move and fit onto the surface of the aerogel pad 11, the inflation needle 54 inflates the fitting area of the two to provide a gas source for the buffer airbag.

[0074] When the conveying frame 41 rotates to the corresponding position of the feeding seat 6, the feeding module 61 is started to drive the negative pressure suction cup 62 to pick up the buffer film 12 and the silica gel frame 2 placed on the feeding seat 6. And under the operation of the feeding module 61, it is made to move towards the assembly frame 52 direction, and finally the buffer film 12 and the silica gel frame 2 are adhered to the upper and lower sides of the aerogel pad 11, thus completing the alignment and fitting operation of each layer of raw materials before hot pressing of the aerogel interlayer 1.

[0075] Based on the above, two feeding modules 61 for sucking the upper and lower sides of the aerogel pad 11 are arranged side by side up and down, and the feeding module 61 is set as a linear sliding module, which can pick up the buffer film 12 and the silica gel frame 2 placed side by side up and down on the feeding seat 6. The silica gel frame 2 is placed above the buffer film 12, and the size of the edge of the silica gel frame 2 is larger than the size of the buffer film 12. During the suction process by the negative pressure suction cup 62, the edge part of the silica gel frame 2 is also sucked by the negative pressure suction cup 62.

[0076] When each layer of raw materials of the aerogel interlayer 1 rotates to the hot pressing position of the assembly seat 7 by the servo motor 51, the driving module 75 is started to drive the hot pressing frame 71 and the supporting frame 72 to move in the closing direction, and the hot pressing plate 73 is heated by the heating coil to hot press each layer of the aerogel interlayer 1 to form the aerogel interlayer 1.

[0077] Based on the above, when the hot pressing frame 71 and the supporting frame 72 are closed, the movable pressing plate 731 is the first to contact the buffer film 12. A sealing ring is arranged between the movable pressing plates 731, which can seal the edge area of the aerogel interlayer 1 when the movable pressing plate 731 and the fixed pressing plate 732 hot press the aerogel interlayer 1 subsequently. So that when the central area of the aerogel interlayer 1 is hot pressed by the fixed pressing plate 732 later, it is ensured that during the hot pressing assembly process of the inert gas, it can be sealed in the aerogel interlayer 1 to form a buffer airbag, completing the hot pressing manufacture of the aerogel interlayer 1. Then, the assembly frame 52 is driven by the servo motor 51 to the conveyor belt 4 and pushed onto the conveyor belt 4 to prepare for the next hot pressing manufacture of the aerogel interlayer 1.

[0078] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A manufacturing device for an aerogel battery separator structure, including a hot press table (3) for manufacturing an aerogel separator (1), characterized in that, The aerogel interlayer (1) includes an aerogel pad (11) and a buffer film (12) sequentially arranged from the inside to the outside. The buffer film (12) is arranged in a double layer and symmetrically distributed with respect to the aerogel interlayer (1). The buffer film (12) is made of polyimide and is attached to the outer surface of the aerogel pad (11). Buffer airbags are arranged on the buffer film (12), and a thermosetting epoxy adhesive is coated on the edges of the buffer film (12) and the aerogel pad (11). A silica gel frame (2) is arranged around the aerogel interlayer (1), and the buffer film (12) is installed on the surface of the silica gel frame (2). The silica gel frame (2) is formed by hot pressing two layers of silica gel frames; A conveying mechanism is arranged outside the hot pressing table (3) for conveying the raw materials of each layer of the aerogel interlayer (1). An assembling mechanism is arranged on the hot pressing table (3) for hot pressing and assembling each layer of the aerogel interlayer (1); The conveying mechanism includes conveyor belts (4) symmetrically distributed around the hot pressing table (3) in a rotational manner. The conveyor belts (4) intermittently convey the aerogel pads (11) through a stepping motor. A conveying frame (41) for storing the aerogel pads (11) is placed on the conveyor belts (4). A placing rack (411) is connected to the inside of the conveying frame (41) by bolts. An intermittent assembling table (5) is arranged between the conveyor belts (4) and the hot pressing table (3). A feeding component is arranged inside the intermittent assembling table (5) for providing the buffer film (12) and the silica gel frame (2); A servo motor (51) is arranged on the top of the intermittent assembling table (5). An assembling frame (52) is fixed to the output shaft of the servo motor (51). An electric push rod (53) is arranged on the top of the assembling frame (52). An electromagnetic plate (531) magnetically attracted to the conveying frame (41) is arranged at the end of the electric push rod (53). An inflation needle head (54) is also arranged on the top of the assembling frame (52). The inflation needle head (54) is connected to an inflation tank (55) storing inert gas inside through a connecting pipe; The feeding component includes a feeding seat (6) arranged on one side of the intermittent assembling table (5). A feeding module (61) is arranged on the feeding seat (6). A negative pressure suction cup (62) is arranged on the feeding module (61). An air pressure adjusting push rod (64) is connected to the inner wall of the negative pressure suction cup (62) through an air pressure adjusting plug (63); The assembling mechanism includes an assembling seat (7) arranged at the rotation center of the plurality of intermittent assembling tables (5). A hot pressing frame (71) and a supporting frame (72) are arranged on the top of the assembling seat (7). Hot pressing plates (73) are arranged on the opposite sides of the hot pressing frame (71) and the supporting frame (72). The hot pressing plate (73) is composed of a movable pressing plate (731) and a fixed pressing plate (732). An electric heating coil for heating is arranged inside the hot pressing plate (73). A driving module (75) for driving the hot pressing frame (71) and the supporting frame (72) to move up and down in the opposite direction is arranged inside the assembling seat (7).

2. The manufacturing apparatus of an aerogel battery separator structure according to claim 1, characterized in that, The conveying frame (41) is provided with an inflation hole adapted to the inflation needle (54), and both the upper and lower surfaces of the conveying frame (41) are open, and a limiting groove is provided at the top of the placing rack (411).

3. The manufacturing device of an aerogel battery separator structure according to claim 1, characterized in that, A thermosetting glue coating assembly is arranged on the interval assembly table (5). The thermosetting glue coating assembly includes a coating glue cylinder (8). A coating roller (81) is rotatably arranged at the bottom of the coating glue cylinder (8). The coating roller (81) is composed of an edge coating wheel (811) and an interval coating rod (812). A glue outlet adapted to the coating roller (81) is provided on the coating glue cylinder (8), and a lifting hydraulic cylinder is arranged at the bottom of the coating glue cylinder (8).

4. The manufacturing apparatus of an aerogel battery separator structure according to claim 1, characterized in that, A deflection port is provided on one side of the feeding module (61) at the bottom away from the interval assembly table (5) to provide a turning space for the negative pressure suction cup (62), and a rubber ring for sealing is arranged on the opposite side of the negative pressure suction cup (62).

5. The manufacturing apparatus of an aerogel battery separator structure according to claim 1, wherein, A coating pretreatment assembly is arranged on the top of the feeding seat (6). The coating pretreatment assembly includes a wetting box (9). A wetting roller (91) is rotatably arranged in the wetting box (9). A hydrophilic pad is adhered to the outer surface of the wetting roller (91), and a saturated carbonic acid solution is contained in the wetting box (9).

6. The manufacturing apparatus of an aerogel battery separator structure according to claim 1, wherein, Buffer arc grooves are provided on the opposite sides of the fixed pressing plate (732), and the bottom of the movable pressing plate (731) at the bottom is fixed to the top of the supporting bracket (72) through a compression spring column (74) to maintain a symmetrical state with the movable pressing plate (731) at the top.

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