Coating device for fireproof paste of power battery

Abstract

The utility model discloses a power battery fireproof paste coating device which comprises a frame body, a sealing bottom plate is arranged on the frame body in a sliding mode in the first direction, and a fixing base used for placing a fireproof paste base layer is arranged on the bottom plate. The supporting frame is arranged on the frame body, and a sealing shell cover matched with the sealing bottom plate is arranged on the supporting frame in a sliding mode in the height direction; the coating assembly is configured in the sealing shell cover, and after the coating assembly is used for carrying out rolling defoaming on the base layer of the fireproof paste placed on the fixing base, the base layer of the fireproof paste is coated with a surface layer of the fireproof paste; according to the utility model, the problem that the forming quality and the fireproof quality of the fireproof sticker are influenced by space defects in the fireproof sticker due to the fact that bubbles are easy to exist during the preparation and forming of the fireproof sticker can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery production equipment, in particular to a power battery fireproof sticker coating device. Background Art

[0002] Power batteries are the power source for tools, primarily those used in electric vehicles, electric trains, electric bicycles, and golf carts. They primarily include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. These batteries, unlike starting batteries used to start automobile engines, are typically valve-sealed lead-acid batteries, open-top tubular lead-acid batteries, and lithium iron phosphate batteries.

[0003] Currently, when batteries experience thermal runaway, they rapidly release the electrical and chemical energy stored within their cells. The electrolyte inside the battery can then burst through the pressure relief valve, causing spontaneous combustion. Placing a fireproofing patch on the pressure relief valve can, to a certain extent, prevent spontaneous combustion. However, during the manufacturing process, fireproofing patches are made from a slurry, which can contain bubbles during molding. These bubbles can create internal defects within the formed patch, impacting both its molding quality and its fire-resistance. Utility Model Content

[0004] In order to overcome the above shortcomings, the purpose of the present invention is to provide a power battery fireproof sticker coating device.

[0005] In order to achieve the above objectives, the technical solutions adopted by the present invention include:

[0006] A frame, wherein a sealing bottom plate is slidably arranged on the frame along a first direction, and a fixing seat for placing a base layer of the fireproof tape is arranged on the bottom plate;

[0007] A support frame, the support frame is configured on the frame body, and a sealing shell adapted to the sealing bottom plate is slidably configured on the support frame along the height direction;

[0008] A coating component is configured in the sealed shell, and the coating component can roll and defoam the base layer of the fireproof sticker placed on the fixing seat, and then coat the surface layer of the fireproof sticker on the base layer of the fireproof sticker.

[0009] The present application controls the surface layer of the fireproof sticker to be in a vacuum environment during coating, thereby eliminating the problem of bubbles in the surface layer, improving the coating quality of the surface layer of the fireproof sticker, and improving the quality of the finished product of the fireproof sticker.

[0010] In the preferred technical solution of the above-mentioned power battery fireproof tape coating device, the coating assembly includes a support plate configured to move along a first direction, a pressure roller, an extrusion head and a scraper arranged on the bottom surface of the support plate and sequentially arranged along the first direction, wherein the bottom end of the scraper is flush with the bottom surface of the pressure roller, and the extrusion head is relatively located above the bottom end of the scraper.

[0011] In the preferred technical solution of the above-mentioned power battery fireproof tape coating device, there are several extrusion heads, and the scraper is formed with a tip portion on the side facing the extrusion head, and the tip portion is opposite to the bottom end of the extrusion head.

[0012] In the preferred technical solution of the above-mentioned power battery fireproof tape coating device, two protruding plates are provided on the bottom surface of the support plate, and connecting ears are provided on both sides of the pressure roller. The spacing between the two protruding plates is greater than the length of the pressure roller, and the connecting ears are threadedly connected to the protruding plates by bolts.

[0013] In the preferred technical solution of the above-mentioned power battery fireproof sticker coating device, the fixing seat includes a first part and a second part that are detachably connected, wherein a receiving groove is formed on the top surface of the first part and a positioning pin is arranged around the receiving groove, and a penetrating window that is compatible with the receiving groove is formed in the middle of the second part, and a positioning hole that is compatible with the positioning pin is formed around the window.

[0014] In the preferred technical solution of the above-mentioned power battery fireproof tape coating device, the first part is formed with overflow grooves on both sides of the accommodating groove.

[0015] In the preferred technical solution of the above-mentioned power battery fireproof sticker coating device, a heating device is also provided on the bottom surface of the support plate, and the heating device is located at the rear position of the scraper relative to the first direction. The heating device can heat and dry the surface layer of the fireproof sticker coated on the surface of the base layer of the fireproof sticker.

[0016] In the preferred technical solution of the above-mentioned power battery fireproof tape coating device, a driving device is arranged on the top surface of the sealing shell, and the driving device is used to drive the supporting plate to rise or move downward in the sealing shell.

[0017] In the preferred technical solution of the above-mentioned power battery fireproof tape coating device, an annular groove is formed on the sealing bottom plate, a sealing gasket is arranged in the annular groove, and the sealing shell cover can be inserted into the annular groove.

[0018] In the preferred technical solution of the above-mentioned power battery fireproof sticker coating device, the fixing seat is detachably configured on the top surface of the sealing bottom plate.

[0019] The beneficial effect of the utility model is that by controlling the surface layer of the fireproof sticker to be in a vacuum environment during coating, the problem of bubbles in the surface layer is eliminated, the coating quality of the surface layer of the fireproof sticker is improved, and the quality of the finished product of the fireproof sticker is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the fireproof sticker installed on the power battery;

[0021] Figure 2 This is a schematic diagram of a fireproof sticker;

[0022] Figure 3 It is a cross-sectional view of the fireproof sticker;

[0023] Figure 4 Main view of the power battery fireproof sticker coating device Figure 1

[0024] Figure 5 Main view of the power battery fireproof sticker coating device Figure 2 ;

[0025] Figure 6 Schematic diagram of the internal structure of the sealing shell;

[0026] Figure 7 is a schematic diagram of the coating component;

[0027] Figure 8 is a bottom view of the coating component;

[0028] Figure 9 This is a schematic diagram of the disassembly of the fixed seat;

[0029] In the picture:

[0030] Fireproof sticker 10, base layer 101, surface layer 102;

[0031] Frame 1, sealing base plate 2, annular groove 21, fixing seat 3, first part 31, accommodating groove 311, overflow groove 312, second part 32, support frame 4, sealing shell 5, coating assembly 6, support plate 61, pressure roller 62, extrusion head 63, scraper 64, cross plate 65, driving device 66, extension plate 67, connecting ear 68, second driving cylinder 7, positioning pin 8. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0033] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood in a broad sense, for example, to refer to fixed connections, detachable connections, or integral connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0035] like Figures 1 to 9 As shown, the coating device of the power battery fireproof sticker 10 of the utility model includes: a frame 1, a sealing bottom plate 2 is configured on the frame 1 for sliding along the first direction, and a fixing seat 3 for placing the base layer 101 of the fireproof sticker is configured on the bottom plate; a support frame 4, the support frame 4 is configured on the frame 1, and a sealing shell cover 5 that is compatible with the sealing bottom plate 2 is configured on the support frame 4 for sliding along the height direction; a coating component 6, the coating component 6 is configured in the sealing shell cover 5, and the coating component 6 can roll and defoam the base layer 101 of the fireproof sticker placed on the fixing seat 3, and then coat the surface layer 102 of the fireproof sticker on the base layer 101 of the fireproof sticker 10.

[0036] See also Figures 1 to 3 The fireproof sticker 10 has a total of three layers, namely a base layer 101 and a surface layer 102 arranged on both sides of the base layer 101, wherein the base layer 101 is made of heat-insulating material and the surface layer 102 is made of corrosion-resistant material; it should be noted that the base layer 101 still has a certain ductility after preparation, and the surface layer 102 is a fluid structure. The surface layer 102 of the fluid structure needs to be evenly coated on the base layer 101. After the surface layer 102 dries, the base layer 101 and the surface layer 102 form a complete fireproof sticker 10 structure. The complete fireproof sticker 10 is attached to the explosion-proof valve of the power battery. When the explosion-proof valve of the power battery cell ruptures, the fireproof sticker 10 can contact the electrolyte sprayed out of the cell. Through the effect of the material of the fireproof sticker 10, only smoke can be generated and the occurrence of open flames can be avoided.

[0037] See also Figures 4 to 6A slide rail and a first driving cylinder are installed on the frame 1 along the first direction. The sealing bottom plate 2 is slidably installed on the slide rail through a slider. The extended shaft end of the first driving cylinder is connected to the sealing bottom plate 2. The sealing bottom plate 2 can be moved along the first direction on the frame 1 by extending or retracting the extended shaft end of the first driving cylinder; see Figure 2 A second driving cylinder 7 is provided on the top of the support frame 4. The second driving cylinder 7 can control the sealing shell 5 to move downward so that it fits on the sealing bottom plate 2, thereby placing the base layer 101 of the fireproof sticker on the fixing seat 3 in a sealed environment. At this time, the sealed environment can be vacuumed through the vacuum port on the sealing bottom plate 2 using an external vacuum device to ensure the coating effect of the surface layer 102 of the fireproof sticker.

[0038] During operation, first place the base layer 101 of the fireproof sticker 10 in the fixing seat 3, use the first driving cylinder to push the sealing bottom plate 2 in the first direction to just below the sealing shell 5, then use the second driving cylinder 7 to control the sealing shell 5 to move down to cover the sealing bottom plate 2, and then use the external vacuum equipment to vacuum the sealed space formed between the sealing shell 5 and the sealing bottom plate 2. After the vacuuming is completed, control the coating component 6 to evenly coat the surface layer 102 of the fireproof sticker on the base layer 101 of the fireproof sticker along the first direction. After the side of the base layer 101 of the fireproof sticker coated with the surface layer 102 is dry, use the second driving cylinder 7 to drive The sealing shell cover 5 moves upward, and the first driving cylinder is used to control the sealing base plate 2 to extend. At this time, the fireproof sticker 10 placed in the fixed seat 3 is taken out and turned, and the above operation is repeated to coat the surface of the other side of the fireproof sticker base layer 101 with the surface layer 102, or the fireproof sticker 10 placed in the fixed seat 3 is taken out and a new fireproof sticker base layer 101 is replaced to coat the surface layer 102; in this application, by controlling the surface layer 102 of the fireproof sticker to be in a vacuum environment during coating, the problem of bubbles in the surface layer 102 can be eliminated, the coating quality of the surface layer 102 of the fireproof sticker is improved, and the quality of the finished product of the fireproof sticker 10 is improved.

[0039] In one or more embodiments, the coating assembly 6 includes a support plate 61 configured to move along a first direction, a pressure roller 62, an extrusion head 63 and a scraper 64 arranged on the bottom surface of the support plate 61 and arranged in sequence along the first direction, wherein the bottom end of the scraper 64 is flush with the bottom surface of the pressure roller 62, and the extrusion head 63 is relatively located above the bottom end of the scraper 64.

[0040] See also Figures 4 to 8A horizontal plate 65 is arranged in the sealed shell 5, and a guide rail is arranged on the lower surface of the horizontal plate 65 along the first direction. The support plate 61 is slidably arranged on the guide rail. The horizontal plate 65 is driven by a driving device 66 installed on the top surface of the sealed shell 5 to move up or down in the sealed shell 5. The driving device 66 can be a third driving cylinder. A fourth driving cylinder is arranged on the horizontal plate 65 along the first direction. The extended shaft end of the fourth driving cylinder is connected to the support plate 61. By controlling the extended shaft end of the fourth driving cylinder to extend or retract, the support plate 61 can be moved along the first direction in the sealed shell 5.

[0041] When the sealing base with the fireproof sticker base layer 101 is placed moves to the bottom of the sealing shell 5, the second driving cylinder 7 is first used to control the sealing shell 5 to move downward to seal with the sealing bottom plate 2. Thereafter, the sealed space is evacuated by a vacuum device. After the vacuuming is completed, the fourth driving cylinder is used to control the support plate 61 to move in the first direction so that the pressure roller 62 is located directly above one end of the fireproof sticker base layer 101 placed in the fixed seat 3. Thereafter, the third driving cylinder is used to control the horizontal plate 65 and the support plate 61 to move downward, so that the pressure roller 62 contacts the fireproof sticker base layer 101, and then the fourth driving cylinder is controlled to control the support plate 61 to move in the first direction so that the pressure roller 62 presses over the surface of the fireproof sticker base layer 101 in sequence. When the extrusion head 63 passes through the base layer 101 of the fireproof sticker, the extrusion head 63 is controlled to extrude the surface layer 102 of the fluid structure so that the surface layer 102 can fall onto the base layer 101 of the fireproof sticker. As the support plate 61 moves along the first direction, the scraper 64 begins to scrape the surface layer 102 of the fluid structure that falls on the base layer 101 of the fireproof sticker, ensuring that the surface layer 102 can be evenly coated on the base layer 101 of the fireproof sticker. At the same time, since the processing space is in a vacuum state, the small bubbles in the surface layer 102 can be broken, and combined with the leveling effect of the scraper 64, the problem of bubbles in the surface layer 102 on the base layer 101 is effectively avoided, thereby improving the coating effect of the surface layer 102 of the fireproof sticker of this application and having practicality.

[0042] In one or more embodiments, a heating device is also provided on the bottom surface of the support plate 61, which is located at the rear position of the scraper 64 relative to the first direction. The heating device can heat and dry the fireproof tape surface layer 102 coated on the surface of the fireproof tape base layer 101.

[0043] The accompanying drawings do not show a heating device, which may be a heating tube; the bottom of the heating tube extends to the bottom end of the scraper 64; after the scraper 64 evenly coats the surface layer 102 of the fireproof sticker on the base layer 101 of the fireproof sticker, the heating tube can heat the coated surface layer 102 of the fireproof sticker as the support plate 61 moves, thereby accelerating the drying efficiency of the surface layer 102 of the fireproof sticker, further improving the production efficiency of the fireproof sticker 10 of this application, and having practicality.

[0044] In one or more embodiments, there are multiple extrusion heads 63 , and the scraper 64 is formed with a tip portion on a side facing the extrusion head 63 , and the tip portion is opposite to the bottom end of the extrusion head 63 .

[0045] See also Figure 8 Through this setting, the surface layer 102 dripping on the base layer 101 can be evenly divided to both sides of the tip of the scraper 64, further ensuring the uniformity of the scraper 64 coating the surface layer 102 and improving the production quality of the fireproof tape 10 of this application.

[0046] In one or more embodiments, two protruding plates 67 are configured on the bottom surface of the support plate 61, and connecting ears 68 are configured on both sides of the pressure roller 62. The distance between the two protruding plates 67 is greater than the length of the pressure roller 62, and the connecting ears 68 are threadedly connected to the protruding plates 67 by bolts.

[0047] See also Figure 7 By removing the bolts, the pressure roller 62 can be separated from the support plate 61, which facilitates the installation and disassembly of the pressure roller 62 and enables the present application to adapt to fireproof stickers 10 of different sizes, thereby increasing the size range of the fireproof stickers 10 coated in the present application.

[0048] In one or more embodiments, the fixing seat 3 includes a first part 31 and a second part 32 that are detachably connected, wherein a receiving groove 311 is formed on the top surface of the first part 31 and a positioning pin 8 is arranged around the receiving groove 311, a through window is formed in the middle of the second part 32 and is compatible with the receiving groove 311, and a positioning hole is formed around the window and is compatible with the positioning pin 8; the first part 31 has overflow grooves 312 formed on both sides of the receiving groove 311.

[0049] See also Figure 9 The receiving groove 311 of the fixing seat 3 is used to place the fireproof sticker base layer 101; when placing the fireproof sticker base layer 101, first remove the second part 32 from the first part 31, then place the fireproof sticker base layer 101 in the receiving groove 311, and then cover the second part 32 on the first part 31, and the second part 32 and the first part 31 are connected through the positioning pin 8 and the positioning hole.

[0050] When the surface layer 102 of the fireproof sticker is coated on the base layer 101 of the fireproof sticker, the bottom ends of the pressure roller 62, the extrusion head 63 and the scraper 64 will extend into the receiving groove 311 through the window of the second part 32, and then the surface layer 102 can be coated on the base layer 101 along the above operation. Through this setting, a limit can be formed on the base layer 101 of the fireproof sticker, reducing the displacement of the base layer 101 of the fireproof sticker when rolled by the pressure roller 62 or coated by the scraper 64, thereby improving the coating effect of the fireproof sticker 10 of this application; in addition, the overflow grooves 312 opened on both sides of the receiving groove 311 are used to collect excess surface layer 102 fluid scraped off by the two sides of the scraper 64.

[0051] In one or more embodiments, an annular groove 21 is formed on the sealing base plate 2, a sealing gasket is disposed in the annular groove 21, and the sealing cover 5 can be inserted into the annular groove 21. This arrangement can further improve the sealing effect of the sealed space formed between the sealing cover 5 and the sealing base plate 2.

[0052] In one or more embodiments, the fixing seat 3 is detachably configured on the top surface of the sealing bottom plate 2. Through this arrangement, the size of the fixing seat 3 can be replaced, ensuring that the present application can adapt to the coating of fireproof stickers 10 of different sizes.

[0053] The above implementation methods are only for illustrating the technical concept and features of the utility model. Its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the scope of protection of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A power battery fireproof sticker coating device, characterized in that: include: A frame, wherein a sealing bottom plate is slidably arranged on the frame along a first direction, and a fixing seat for placing a base layer of the fireproof tape is arranged on the bottom plate; A support frame, the support frame is configured on the frame body, and a sealing shell adapted to the sealing bottom plate is slidably configured on the support frame along the height direction; A coating component is configured in the sealed shell, and the coating component can roll and defoam the base layer of the fireproof sticker placed on the fixing seat, and then coat the surface layer of the fireproof sticker on the base layer of the fireproof sticker.

2. The power battery fireproof sticker coating device according to claim 1, characterized in that: The coating assembly includes a support plate configured to move along a first direction, a pressure roller, an extrusion head and a scraper arranged on the bottom surface of the support plate and sequentially arranged along the first direction, wherein the bottom end of the scraper is flush with the bottom surface of the pressure roller, and the extrusion head is relatively located above the bottom end of the scraper.

3. The power battery fireproof sticker coating device according to claim 2, characterized in that: There are a plurality of extrusion heads, and the scraper is formed with a tip portion on a side facing the extrusion head, and the tip portion is directly opposite to the bottom end of the extrusion head.

4. The power battery fireproof sticker coating device according to claim 2, characterized in that: The bottom surface of the support plate is provided with two protruding plates, and connecting ears are provided on both sides of the pressure roller. The distance between the two protruding plates is greater than the length of the pressure roller, and the connecting ears are threadedly connected to the protruding plates through bolts.

5. The power battery fireproof sticker coating device according to claim 1, characterized in that: The fixing seat includes a first part and a second part that are detachably connected, wherein a receiving groove is formed on the top surface of the first part and a positioning pin is arranged around the receiving groove, a window is formed in the middle of the second part and is adapted to the receiving groove, and a positioning hole is formed around the window and is adapted to the positioning pin.

6. The power battery fireproof sticker coating device according to claim 5, characterized in that: The first portion forms overflow grooves on both sides of the accommodating groove.

7. The power battery fireproof sticker coating device according to claim 2, characterized in that: The bottom surface of the support plate is also provided with a heating device, which is located at the rear position of the scraper relative to the first direction. The heating device can heat and dry the surface layer of the fireproof tape coated on the surface of the base layer of the fireproof tape.

8. The power battery fireproof sticker coating device according to claim 2, characterized in that: The top surface of the sealing shell is provided with a driving device, and the driving device is used to drive the supporting plate to rise or move downward in the sealing shell.

9. The power battery fireproof sticker coating device according to claim 1, characterized in that: An annular groove is formed on the sealing bottom plate, a sealing gasket is arranged in the annular groove, and the sealing shell can be inserted into the annular groove.

10. The power battery fireproof sticker coating device according to claim 1, characterized in that: The fixing seat is detachably arranged on the top surface of the sealing bottom plate.

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