A two-component silicone coating method for the surface of new energy batteries

Abstract

This invention discloses a method for coating the surface of a new energy battery with a two-component organosilicon, comprising the following steps: Step S1, thoroughly mixing component A and component B of the two-component organosilicon in a specified ratio; Step S2, cleaning the surface of the new energy battery; Step S3, coating the thoroughly mixed two-component organosilicon onto the surface of the new energy battery by spraying or 3D printing. This invention, by coating the surface of the new energy battery with a layer of two-component organosilicon to replace the blue film covering the surface, reduces the complexity and difficulty of the encapsulation process, improves encapsulation efficiency and production line flexibility, facilitates the encapsulation of liquid cooling plates in downstream assembly plants, and can prevent temperature imbalance in individual new energy batteries.

Description

Technical Field

[0001] This invention relates to the field of new energy battery technology, specifically to a method for coating the surface of a new energy battery with a two-component organosilicon. Background Technology

[0002] New energy batteries are highly sensitive to temperature and must operate within a suitable temperature range to function properly. Therefore, when used in electric vehicles, new energy batteries are typically paired with liquid cooling plates to maintain a constant temperature during operation, thereby maximizing battery performance. A liquid cooling plate is a structural component in a power battery system that transfers excess heat generated during battery operation through contact with the battery or module, with coolant flowing through its internal channels carrying the heat away. Cylindrical cells are generally cooled by side cooling, where a liquid cooling plate is attached to the side of the cylindrical cell, and coolant is circulated through the plate to cool the cell.

[0003] During the production process, new energy batteries typically require a blue film to be coated on their surface. This blue film, also known as a separator, anti-stick film, or protective film, possesses excellent insulation properties. In battery production, the main function of the blue film is to separate the battery cells. It effectively prevents the impact of a single cell's malfunction (such as a short circuit or overheating) on ​​other cells, and protects the cells from physical damage such as scratches and impacts during battery transportation, assembly, and use. Simultaneously, the blue film prevents direct contact between cells, reducing surface wear caused by friction or pressure, and extending battery life.

[0004] While wrapping a blue film around the surface of new energy batteries brings many advantages, the presence of the blue film also increases the difficulty of encapsulating the liquid cooling plate with the battery cell. Due to the certain thickness and material characteristics of the blue film, additional processing steps are required to ensure that the liquid cooling plate can be tightly and evenly attached to the battery cell. This not only increases the complexity of the production line but also reduces encapsulation efficiency, thereby increasing production costs. Summary of the Invention

[0005] To overcome the problem that the existing method of coating the surface of new energy batteries with a blue film increases the encapsulation difficulty between the liquid cooling plate and the battery cell, this invention provides a two-component organosilicon coating method for the surface of new energy batteries. By replacing the blue film wrapped on the surface of new energy batteries with two-component organosilicon, the complexity and difficulty of the encapsulation process are reduced, the encapsulation efficiency and production line flexibility are improved, the encapsulation of liquid cooling plates in downstream assembly plants is facilitated, and the temperature imbalance of individual new energy batteries can be prevented.

[0006] The technical solution of this invention is as follows:

[0007] A method for coating a new energy battery surface with a two-component organosilicon includes the following steps:

[0008] Step S1: Mix component A and component B of the two-component organosilicon thoroughly in the specified proportion;

[0009] Step S2: Clean the surface of the new energy battery;

[0010] Step S3: The fully mixed bicomponent organosilicon is coated onto the surface of the new energy battery by spraying or 3D printing.

[0011] As a preferred embodiment of the present invention, it further includes:

[0012] Step S4: Place the coated new energy battery in a curing chamber and set an appropriate temperature and time for curing according to the curing characteristics of the two-component organosilicon.

[0013] Step S5: Perform visual inspection and performance testing on the cured coating.

[0014] As a preferred embodiment of the present invention, the specific steps of coating the fully mixed two-component organosilicon onto the surface of the new energy battery by spraying include:

[0015] Step A1: Pour the thoroughly mixed two-component silicone into the storage tank of the spraying equipment;

[0016] Step A2: Adjust the pressure, flow rate, spraying distance, and spraying angle of the spray gun of the spraying equipment according to the characteristics of the two-component silicone and the required coating thickness;

[0017] Step A3: Aim the spray nozzle of the spraying equipment at the surface of the new energy battery, maintaining an appropriate spraying distance and angle;

[0018] Step A4: Start the spraying equipment. The spray nozzle of the spraying equipment sprays the surface of the new energy battery at a uniform speed and path.

[0019] As a preferred embodiment of the present invention, the specific steps of coating the fully mixed bicomponent organosilicon onto the surface of the new energy battery by 3D printing include:

[0020] Step B1: Transfer the fully mixed two-component silicone to the feeding system of the 3D printer;

[0021] Step B2: Place the new energy battery on the printing platform of the 3D printer;

[0022] Step B3: Load and calibrate the 3D printing model to ensure that the printing path matches the shape and size of the new energy battery;

[0023] Step B4: Start the 3D printer. The print head of the 3D printer prints according to the preset path and parameters. During the printing process, the two-component organosilicon will be coated onto the surface of the new energy battery through the print head of the 3D printer.

[0024] As a preferred embodiment of the present invention, the raw materials of component A include: methyl vinyl silicone rubber, polymer, foaming agent, crosslinking agent, catalyst and flame retardant powder;

[0025] The raw materials for component B include isocyanate, hydrogen-containing silicone oil, and curing agent.

[0026] As a preferred embodiment of the present invention, the mass percentage ratio of each raw material in component A is as follows:

[0027] Methyl vinyl silicone rubber: 20-40%;

[0028] High molecular weight polymers: 10-20%;

[0029] Foaming agent: 15-30%;

[0030] Crosslinking agent: 5-10%;

[0031] Catalyst: 5-10%;

[0032] Flame retardant powder: 20-40%.

[0033] As a preferred embodiment of the present invention, the mass percentage ratio of each raw material in component B is as follows:

[0034] Isocyanate: 50-70%;

[0035] Hydrogen-containing silicone oil: 20-40%;

[0036] Hardener: 10-30%.

[0037] As a preferred embodiment of the present invention, the mass ratio of component A to component B is 1:1.

[0038] As a preferred embodiment of the present invention, the preparation method of component A includes:

[0039] The methyl ethylene silicone rubber and the polymer are placed in a reaction vessel according to the specified ratio for premixing. After premixing for 5-8 hours, the flame retardant powder, the foaming agent, the catalyst and the crosslinking agent are added sequentially according to the components and mixed for 1-2 hours. The rotation speed of the reaction vessel is 100-120 r / min. After the premixing is completed, the rotation speed of the reaction vessel is 160-190 r / min.

[0040] As a preferred embodiment of the present invention, the preparation method of component B includes:

[0041] The isocyanate, the crosslinking agent, and the curing agent are placed in a reaction vessel according to the specified ratio and mixed for 2-4 hours. The rotation speed of the reaction vessel is 200-230 r / min.

[0042] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0043] The present invention provides a two-component organosilicon coating method for the surface of new energy batteries. This method replaces the blue film covering the surface of the new energy battery with a two-component organosilicon coating, reducing the complexity and difficulty of the encapsulation process, improving encapsulation efficiency and production line flexibility, facilitating the encapsulation of liquid cooling plates in downstream assembly plants, and preventing temperature imbalance in individual new energy batteries. By reducing process steps and material usage, production costs are lowered. Simultaneously, the two-component organosilicon possesses advantages such as high and low temperature resistance, electrical insulation, oxidation stability, weather resistance, high flame retardancy, water resistance, corrosion resistance, and non-toxicity and environmental friendliness. These advantages effectively protect new energy batteries from external environmental damage, improve battery stability and safety, and reduce subsequent maintenance and replacement costs. This coating method is applicable to various types of new energy batteries, exhibiting high versatility and applicability. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a flowchart illustrating the steps of a two-component organosilicon coating method for the surface of a new energy battery in one embodiment of the present invention.

[0046] Figure 2 This is a flowchart of the steps of a two-component organosilicon coating method for the surface of a new energy battery in another embodiment of the present invention;

[0047] Figure 3This is a flowchart illustrating the specific steps of coating a fully mixed two-component organosilicon onto the surface of a new energy battery by spraying, according to one embodiment of the present invention.

[0048] Figure 4 This is a flowchart illustrating the specific steps involved in coating a fully mixed two-component organosilicon onto the surface of a new energy battery using 3D printing, as described in one embodiment of the present invention. Detailed Implementation

[0049] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0050] It should be noted that the terms "comprising" and "having," and any variations thereof, in the specification and claims of this invention are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0051] Please see Figure 1 This embodiment provides a two-component organosilicon coating method for the surface of a new energy battery, including the following steps:

[0052] Step S1: Mix component A and component B of the two-component organosilicon thoroughly in a ratio of 1:1.

[0053] Step S2: Clean the surface of the new energy battery to remove oil, dust and other impurities, ensuring that the coating surface is clean and flat, which is conducive to the adhesion of the two-component organosilicon. If necessary, a clean cloth or special wiping agent can be used to wipe the surface of the new energy battery for a final cleaning.

[0054] Step S3: Apply the fully mixed two-component organosilicon to the surface of the new energy battery by spraying or 3D printing.

[0055] The present invention provides a two-component organosilicon coating method for the surface of new energy batteries. This method replaces the blue film covering the surface of the new energy battery with a two-component organosilicon coating, reducing the complexity and difficulty of the encapsulation process, improving encapsulation efficiency and production line flexibility, facilitating the encapsulation of liquid cooling plates in downstream assembly plants, and preventing temperature imbalance in individual new energy batteries. By reducing process steps and material usage, production costs are lowered. Simultaneously, the two-component organosilicon possesses advantages such as high and low temperature resistance, electrical insulation, oxidation stability, weather resistance, high flame retardancy, water resistance, corrosion resistance, and non-toxicity and environmental friendliness. These advantages effectively protect new energy batteries from external environmental damage, improve battery stability and safety, and reduce subsequent maintenance and replacement costs. This coating method is applicable to various types of new energy batteries, exhibiting high versatility and applicability.

[0056] Please see Figure 2 In one embodiment, the two-component organosilicon coating method for the surface of a new energy battery further includes:

[0057] Step S4: Place the coated new energy battery in a curing chamber and cure it at an appropriate temperature and time according to the curing characteristics of the two-component silicone. During the curing process, components A and B of the two-component silicone react chemically in the air to form a coating that is resistant to high and low temperatures, electrically insulating, oxidation-resistant, weather-resistant, highly flame-retardant, waterproof, corrosion-resistant, non-toxic, and environmentally friendly, effectively protecting the new energy battery. By controlling the temperature and time of the curing chamber, this chemical reaction process can be accelerated and optimized. The cured coating provides a solid foundation for subsequent performance testing and assembly steps. Only fully cured coatings can pass rigorous performance tests and meet the requirements of downstream assembly plants.

[0058] Step S5: Perform a visual inspection of the cured coating to ensure it is uniform, free of cracks, bubbles, and other defects. Also conduct performance tests, such as high and low temperature resistance tests, electrical insulation tests, and weather resistance tests, to verify that the coating's performance meets the requirements. If any coating quality issues are found, adjustments must be made promptly, such as adjusting the spraying or 3D printing parameters, cleaning the surface again, and re-spraying.

[0059] Please see Figure 3 In one embodiment, the specific steps of coating the fully mixed two-component organosilicon onto the surface of the new energy battery by spraying include:

[0060] Step A1: Pour the thoroughly mixed two-component silicone into the storage tank of the spraying equipment, ensuring that there are no air bubbles or impurities. This is to prevent these adverse factors from affecting the formation and performance of the coating during the printing process. Then, use a stirrer or the equipment's built-in stirring function to stir the two-component silicone again to ensure the uniformity of the coating.

[0061] Step A2: Based on the characteristics of the two-component silicone and the required coating thickness, adjust the pressure, flow rate, spraying distance, and spraying angle of the spray gun of the spraying equipment.

[0062] Step A3: Aim the spray nozzle of the spraying equipment at the surface of the new energy battery, maintaining an appropriate spraying distance and angle.

[0063] Step A4: Start the spraying equipment. The spray nozzles will spray the surface of the new energy battery at a uniform speed and along a uniform path to ensure consistent coating thickness and prevent missed or overlapping coatings. Additionally, it is crucial to control the ambient humidity, temperature, and wind speed during the spraying process to avoid adverse effects on the coating quality.

[0064] By following steps A1-A4 above, it can be ensured that the two-component organosilicon is uniformly and efficiently coated onto the surface of the new energy battery using a spraying method.

[0065] Please see Figure 4 In one embodiment, the specific steps of coating the fully mixed two-component organosilicon onto the surface of a new energy battery using 3D printing include:

[0066] Step B1: Transfer the thoroughly mixed two-component silicone to the 3D printer's feed system, ensuring it is free of air bubbles and impurities. This prevents these adverse factors from affecting coating formation and performance during printing. Placing the coating in the feed system ensures a continuous and stable supply to the print head during printing, preventing print failures due to insufficient or interrupted feed.

[0067] Step B2: Place the new energy battery on the printing platform of the 3D printer and fix it properly to prevent printing deviations caused by battery movement or shaking during the printing process, thereby ensuring the accuracy and precision of the printing.

[0068] Step B3: Load and calibrate the 3D printing model to ensure that the printing path matches the shape and size of the new energy battery, avoiding uneven or missing coatings due to path deviation.

[0069] Step B4: Start the 3D printer. The printer head will print according to the preset path and parameters. During the printing process, the two-component silicone will be precisely coated onto the surface of the new energy battery through the printer head. Furthermore, ambient temperature, humidity, and ventilation conditions should be strictly controlled throughout the process to ensure the quality and performance of the coating.

[0070] Through steps B1-B4 described above, it can be ensured that the two-component silicone is uniformly, continuously, and precisely coated onto the surface of the new energy battery using 3D printing. Compared to spraying, although 3D printing is less efficient, it has very low material loss and wide applicability. Spraying often results in some paint splattering or not adhering to the battery surface, causing material waste; while 3D printing can precisely control the amount and application location of paint, reducing material loss. 3D printing can adapt to new energy batteries of different shapes, sizes, and materials, offering high versatility and flexibility; while spraying may require more adjustments and optimizations when adapting to different shapes and materials.

[0071] In one embodiment, the raw materials of component A include: methyl vinyl silicone rubber, polymer, foaming agent, crosslinking agent, catalyst and flame retardant powder.

[0072] The mass percentage ratio of each raw material in component A is as follows:

[0073] Methyl vinyl silicone rubber: 20-40%;

[0074] High molecular weight polymers: 10-20%;

[0075] Foaming agent: 15-30%;

[0076] Crosslinking agent: 5-10%;

[0077] Catalyst: 5-10%;

[0078] Flame retardant powder: 20-40%.

[0079] Methylethylene silicone rubber is the basic elastomer material in component A, providing excellent elasticity and toughness for the entire silicone system. It exhibits good high-temperature resistance, maintaining stable physical and chemical properties even at high temperatures. Furthermore, it demonstrates good weather resistance, exhibiting good resistance to environmental factors such as ultraviolet radiation and ozone, thus extending the service life of silicone.

[0080] The polymer used is polyurethane. Polyurethane is a novel synthetic polymer material that falls between rubber and plastic. It combines the high strength of plastics with the high elasticity of rubber, exhibiting high hardness and high resilience. This invention improves the elasticity and shock absorption performance of tubular liquid two-component filled silicone by adding polyurethane to component A in a specific proportion and adjusting the amounts of foaming agent, crosslinking agent, and catalyst to ensure good compatibility with the newly added polyurethane and maintain appropriate foaming and crosslinking rates, thereby meeting higher requirements for sealing and shock absorption applications.

[0081] Foaming agents can generate bubbles during the curing process of silicone, thereby adjusting the density and hardness of the silicone. An appropriate amount of foaming agent can improve the processing performance of silicone, making it easier to mold and process.

[0082] Crosslinking agents are used to promote the chemical reaction of foaming agents, causing them to produce more gas, thereby increasing the volume and stability of filled silicone, and also enhancing the temperature resistance and mechanical strength of filled silicone.

[0083] Catalysts can accelerate the curing reaction between component A and component B, shorten the molding time and the time to full curing. Shortening the curing time helps to improve production efficiency and reduce production costs.

[0084] The addition of flame-retardant powder can significantly improve the fire resistance rating of silicone rubber, reduce the risk of fire, and inhibit the spread of flames during combustion, buying time for escape and firefighting. Some flame-retardant powders, such as aluminum hydroxide and magnesium hydroxide, are environmentally friendly and meet environmental protection requirements. Flame-retardant powder is a mixture of one or more of aluminum hydroxide, magnesium hydroxide, decabromodiphenyl ether, and antimony oxide.

[0085] Component B consists of the following raw materials: isocyanate, hydrogen-containing silicone oil, and curing agent.

[0086] The mass percentage ratio of each raw material in component B is as follows:

[0087] Isocyanate: 50-70%;

[0088] Hydrogen-containing silicone oil: 20-40%;

[0089] Hardener: 10-30%.

[0090] Isocyanate is the main crosslinking agent in component B, and it can chemically react with silicone rubber in component A to form a crosslinked network structure. The formation of the crosslinked network can significantly enhance the mechanical properties and heat resistance of silicone. The isocyanate is one or a mixture of at least two of toluene diisocyanate, pure MDI, carbodiimide-modified MDI, MDI-50, and polymeric MDI I.

[0091] Hydrogen-containing silicone oil can regulate the curing speed of silicone, making it more controllable, and can improve the fluidity of silicone, making it easier to mix and mold.

[0092] The curing agent is a platinum catalyst. Platinum catalysts possess high catalytic activity, efficiently promoting cross-linking reactions between organosilicon polymers. The silicon-oxygen bonds formed by platinum catalysts are highly stable, contributing to improved temperature resistance, chemical resistance, and weather resistance of the final product. Compared to other types of catalysts, platinum catalysts have lower toxicity, making them highly useful in industries requiring compliance with stringent safety and health standards. Platinum catalysts have minimal impact on the color and odor of the cured product, which is particularly important for products requiring transparency or specific color requirements. Platinum catalysts can improve the mechanical properties of silicone, such as hardness and elasticity, while maintaining the material's flexibility.

[0093] The preparation method of component A is as follows: methyl ethylene silicone rubber and polymer are placed in a reaction vessel according to the ratio for premixing. After premixing for 5-8 hours, flame retardant powder, foaming agent, catalyst and crosslinking agent are added sequentially according to the components and mixed for 1-2 hours. The rotation speed of the reaction vessel is 100-120 r / min. After the premixing is completed, the rotation speed of the reaction vessel is 160-190 r / min.

[0094] The preparation method of component B is as follows: isocyanate, crosslinking agent and curing agent are put into the reaction vessel according to the ratio and mixed for 2-4 hours. The rotation speed of the reaction vessel is 200-230 r / min.

[0095] The performance of the two-component organosilicon according to the above embodiments of the present invention was tested, and the results are shown in Table 1 below.

[0096] Project Name Two-component organosilicon Curing time (min) 9 High and low temperature performance (-40℃-150℃) No change Electrical insulation performance (Ω·cm) >10^14 Oxidative stability (performance changes after aging) No significant changes Weather resistance (performance changes after one year of exposure) No significant changes Flame retardant rating (UL-94 standard) V-0 Waterproof performance (water absorption rate after immersion for 24 hours) 0.1％ Corrosion resistance (degree of corrosion resistance to copper, aluminum, and steel) Non-corrosive

[0097] As shown in the table above, the two-component organosilicon of this invention has a short curing time, which effectively improves the spraying efficiency. In addition, due to its advantages such as high and low temperature resistance, electrical insulation, oxidation stability, weather resistance, high flame retardancy, water resistance, and corrosion resistance, it can effectively protect new energy batteries from external environmental damage, improve the stability and safety of new energy batteries, and reduce subsequent maintenance and replacement costs.

[0098] In another embodiment, the polymer is a TPU prepolymer. TPU prepolymer is a non-toxic and environmentally friendly polymer with a wide hardness range, high mechanical strength, excellent impact resistance and shock absorption, and also exhibits excellent electrical insulation, high and low temperature resistance, oxidation stability, weather resistance, and corrosion resistance. This invention adds the TPU prepolymer to component A in a certain proportion and adjusts the amounts of foaming agent, crosslinking agent, and catalyst to ensure good compatibility with the newly added TPU prepolymer and maintain appropriate foaming and crosslinking speeds. This not only improves the elasticity and shock absorption performance of the tubular liquid two-component filled silicone, but also enhances the product's electrical insulation, high and low temperature resistance, oxidation stability, weather resistance, and corrosion resistance, while maintaining the product's environmentally friendly characteristics.

[0099] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0100] The present invention has been described above by way of example. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

[0101] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0102] The present invention has been described above with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A method for coating a new energy battery surface with a two-component organosilicon, characterized in that, The following steps are involved: Step S1: Mix component A and component B of the two-component organosilicon thoroughly in the specified proportion; Step S2: Clean the surface of the new energy battery; Step S3: Apply the fully mixed bicomponent organosilicon to the surface of the new energy battery by spraying or 3D printing. The raw materials of component A include: methyl vinyl silicone rubber, polymer, foaming agent, crosslinking agent, catalyst and flame retardant powder, wherein the polymer is polyurethane; The raw materials for component B include: isocyanate, hydrogen-containing silicone oil, and curing agent; The mass percentage ratio of each raw material in component A is as follows: Methyl vinyl silicone rubber: 20-40%; High molecular weight polymers: 10-20%; Foaming agent: 15-30%; Crosslinking agent: 5-10%; Catalyst: 5-10%; Flame retardant powder: 20-40%; The mass percentage ratio of each raw material in component B is as follows: Isocyanate: 50-70%; Hydrogen-containing silicone oil: 20-40%; Hardener: 10-30%.

2. The method for coating a new energy battery surface with a two-component organosilicon according to claim 1, characterized in that, Also includes: Step S4: Place the coated new energy battery in a curing chamber and set an appropriate temperature and time for curing according to the curing characteristics of the two-component organosilicon. Step S5: Perform visual inspection and performance testing on the cured coating.

3. The method for coating a new energy battery surface with a two-component organosilicon according to claim 1, characterized in that, The specific steps for coating the fully mixed two-component organosilicon onto the surface of the new energy battery by spraying include: Step A1: Pour the thoroughly mixed two-component silicone into the storage tank of the spraying equipment; Step A2: Adjust the pressure, flow rate, spraying distance, and spraying angle of the spray gun of the spraying equipment according to the characteristics of the two-component silicone and the required coating thickness; Step A3: Aim the spray nozzle of the spraying equipment at the surface of the new energy battery, maintaining an appropriate spraying distance and angle; Step A4: Start the spraying equipment. The spray nozzle of the spraying equipment sprays the surface of the new energy battery at a uniform speed and path.

4. The method for coating a new energy battery surface with a two-component organosilicon according to claim 1, characterized in that, The specific steps for coating the fully mixed bicomponent organosilicon onto the surface of the new energy battery using 3D printing include: Step B1: Transfer the fully mixed two-component silicone to the feeding system of the 3D printer; Step B2: Place the new energy battery on the printing platform of the 3D printer; Step B3: Load and calibrate the 3D printing model to ensure that the printing path matches the shape and size of the new energy battery; Step B4: Start the 3D printer. The print head of the 3D printer prints according to the preset path and parameters. During the printing process, the two-component organosilicon will be coated onto the surface of the new energy battery through the print head of the 3D printer.

5. The method for coating a new energy battery surface with a two-component organosilicon according to claim 1, characterized in that, The mass ratio of component A to component B is 1:

1.

6. The method for coating a new energy battery surface with a two-component organosilicon according to claim 1, characterized in that, The preparation method of component A includes: The methyl ethylene silicone rubber and the polymer are placed in a reaction vessel according to the specified ratio for premixing. After premixing for 5-8 hours, the flame retardant powder, the foaming agent, the catalyst and the crosslinking agent are added sequentially according to the components and mixed for 1-2 hours. The rotation speed of the reaction vessel is 100-120 r / min. After the premixing is completed, the rotation speed of the reaction vessel is 160-190 r / min.

7. The method for coating a new energy battery surface with a two-component organosilicon according to claim 1, characterized in that, The preparation method of component B includes: The isocyanate, the crosslinking agent, and the curing agent are placed in a reaction vessel according to the specified ratio and mixed for 2-4 hours. The rotation speed of the reaction vessel is 200-230 r / min.

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