Processing method of battery packaging structure, battery packaging structure and processing equipment

Abstract

The invention discloses a processing method of a battery packaging structure, the battery packaging structure and processing equipment, and relates to the technical field of batteries, the processing method comprises the following steps: adding first raw material particles into a mold groove; applying pressure in the mold groove through the first mold pressing tool, and performing compression molding for the first time; cooling and forming a first semi-finished product; the first pressing die tool is transferred, second raw material particles continue to be added into the die groove, and the second raw material particles and the first raw material particles are added according to a preset proportion; pressure is applied in the mold groove through the second mold pressing tool, and second compression molding is carried out; overall secondary cooling is conducted on the mold groove, and a second semi-finished product is formed after demolding; and drying and shaping the second semi-finished product to obtain a finished product of the battery packaging structure. According to the battery packaging structure, the stability of the battery packaging structure can be improved, the problem of slag falling is effectively avoided, and therefore the overall quality of products and the customer satisfaction degree are improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a processing method for a battery packaging structure, a battery packaging structure and processing equipment. Background Art

[0002] The battery packaging structure is a structure specially used to effectively package multiple battery cells. It not only ensures the safety of the battery cells during storage and transportation, but also provides necessary protection measures to prevent the battery cells from being damaged during handling.

[0003] However, the foam used in the battery packaging structure often has packaging debris falling off, which not only affects the cleanliness of the internal product surface, but may even damage the performance of the product itself, thereby causing customer dissatisfaction and complaints, leading to product returns, and further affecting cost-effectiveness. Summary of the invention

[0004] The present application provides a processing method, a battery packaging structure and processing equipment for a battery packaging structure, which can improve the stability of the battery packaging structure and effectively avoid the occurrence of slag falling problems, thereby improving the overall quality of the product and customer satisfaction.

[0005] In a first aspect, the present application provides a method for processing a battery packaging structure, the processing method is processed by a die assembly, the die assembly includes a die groove with a top opening, a first die tooling and a second die tooling, and the steps of the processing method include:

[0006] Step S100: adding first raw material particles into the mold groove.

[0007] This step is to prepare for the processing of the first semi-finished product and ensure that the subsequent steps can proceed smoothly.

[0008] Step S200: applying pressure in the mold groove by a first compression mold tool and performing the first compression molding.

[0009] This step can finalize the first semi-finished product and lay the foundation for subsequent processing.

[0010] Step S300: Cooling and forming a first semi-finished product.

[0011] The above steps can cool the first semi-finished product that has been formed to solidify it. This step can ensure that the shape and structure of the first semi-finished product are stable, providing necessary conditions for the next step of processing.

[0012] Step S400: Transfer the first die tooling and continue to add the second raw material particles into the die groove. The second raw material particles and the first raw material particles are added according to a preset ratio.

[0013] This step can prepare for the composite processing of the first raw material and the second raw material, and then the second semi-finished product can be processed accordingly.

[0014] Step S500: Apply pressure in the mold groove through the second compression mold tool and perform a second compression molding. Through this step, the second semi-finished product can be finalized to ensure that its shape and structure meet the design requirements.

[0015] Step S600: The mold groove is subjected to secondary cooling as a whole, and a second semi-finished product is formed after demoulding. This step can ensure that the shape and structure of the second semi-finished product are stable, providing necessary conditions for the processing of the final product.

[0016] Step S700: Dry and shape the second semi-finished product to obtain a finished battery packaging structure. This step can realize the finished product processing of the battery packaging structure to ensure that the quality and performance of the product meet the requirements.

[0017] Through the above processing method, the battery packaging structure of the present application has the advantages of stable structure, high strength, good waterproof and dustproof effect, etc., and can meet the use requirements in various harsh environments. At the same time, the above processing method is simple to operate and easy to realize automated production, which greatly improves production efficiency and product quality.

[0018] In some examples, during the first compression molding process, a molding pressure of 1.5 MPa-2.5 MPa is applied, and a molding temperature of 120° C.-140° C. is applied.

[0019] The above molding pressure and temperature ranges are selected to ensure that the material can fully melt and fill the mold groove, while avoiding overheating that may cause material degradation or mold damage. After the first compression molding, the semi-finished product has high structural strength and stability, providing a good foundation for subsequent processing steps. In addition, by precisely controlling the molding pressure and temperature, energy consumption and emissions during the processing can be further reduced, meeting the requirements of environmental protection and sustainability.

[0020] In some examples, the die assembly is provided with a spray pipe, and during the process of cooling and forming the first semi-finished product, the spray pipe sprays condensed water, the spraying time is 50s-300s, and the water temperature of the condensed water is 20℃-50℃.

[0021] The above-mentioned spraying step is designed to quickly and effectively cool the semi-finished product so that it can be quickly formed and maintain the desired shape and size. The selection of spraying time and condensed water temperature is based on in-depth research on material properties and molding processes, aiming to ensure that the cooling process is both efficient and does not adversely affect the material. By spraying condensed water, the heat on the surface of the semi-finished product can be quickly taken away, and its temperature can be reduced, thereby accelerating the curing process and improving production efficiency. At the same time, the precise control of spraying time and water temperature can also ensure uniform cooling of the semi-finished product, avoid local overheating or insufficient cooling, and further improve the quality and stability of the product. In addition, the use of condensed water for spraying also has the advantages of environmental protection and energy saving, which meets the sustainable development requirements of modern industrial production.

[0022] In some examples, during the second compression molding process, a molding pressure of 0.4 MPa-0.8 MPa is applied, and a molding temperature of 100° C.-110° C. is applied.

[0023] The above pressure range and temperature interval are set to ensure that during the second compression molding process, the material can fully flow and fill the mold cavity while maintaining an appropriate curing rate. The choice of molding pressure is intended to provide sufficient pressure to make the material fit tightly into the mold to form the desired structure and shape, while avoiding excessive pressure that may cause material rupture or mold damage. The molding temperature affects the fluidity and curing speed of the material. Too high or too low a temperature may affect the quality and performance of the final product. By precisely controlling the molding pressure and temperature, the consistency and stability of the second compression molding process can be ensured, thereby producing high-quality battery packaging structures that meet design requirements. In addition, the setting of this processing parameter also takes into account production efficiency and cost control, aiming to achieve an efficient and energy-saving production process.

[0024] In some examples, the mold groove is subjected to secondary cooling as a whole, and during the process of forming the second semi-finished product after demolding, steam is passed through the mold groove, and ventilation is provided from top to bottom.

[0025] When steam is passed, the second semi-finished product is swept up and down by steam for 3-5 times, and demoulding is performed after the temperature in the mold tank drops to 55℃-80℃.

[0026] This cooling step is designed to further optimize the performance of the battery packaging structure. Through overall secondary cooling, the residual stress inside the material can be effectively reduced, and the dimensional stability and structural strength of the product can be improved. At the same time, the steam can transfer heat more evenly and avoid deformation or cracks caused by local overcooling or overheating.

[0027] The second semi-finished product is swept up and down by steam 3-5 times to ensure the uniformity and controllability of the cooling process. Each time the steam passes through, it will take away some heat, causing the temperature in the mold tank to gradually decrease. This gradual cooling method helps to reduce the thermal stress of the material during the cooling process, thereby improving the overall quality of the product.

[0028] When the temperature in the mold tank drops to 55℃-80℃, demoulding is performed. This temperature range is set based on the mechanical properties and curing degree of the material at the above temperature. At this temperature, the material has a certain strength and stability, and can withstand the external force during the demoulding process, and will not be deformed or damaged due to excessive temperature.

[0029] Through this series of processing steps and parameter settings, a battery packaging structure with excellent performance and quality can be produced to meet the needs of various application scenarios.

[0030] In some examples, the first raw material particles are foamed polypropylene particles, the second raw material particles are polystyrene foam particles, and the ratio of the second raw material particles to the first raw material particles is 5:1, 4:1, 3:1, 3:2 or 2:1.

[0031] Alternatively, the second raw material particles are foamed polypropylene particles, the first raw material particles are polystyrene foam particles, and the ratio of the first raw material particles to the second raw material particles is 5:1, 4:1, 3:1, 3:2 or 2:1.

[0032] The ratio selection of these raw material particles is designed to optimize the physical properties and cost-effectiveness of the battery packaging structure. Expanded polypropylene particles, with their good thermal insulation and impact resistance, provide the necessary protection for battery packaging, while polystyrene foam particles, characterized by their light weight and high strength, help reduce the overall weight while maintaining structural stability. Different ratios can meet different application requirements. For example, in scenarios where higher strength protection is required, a higher ratio of polystyrene foam particles can be selected. In situations where higher requirements are placed on thermal insulation performance, the ratio of expanded polypropylene particles can be appropriately increased. Through such raw material selection and ratio adjustment, it is possible to flexibly adapt to the design requirements of various battery packaging to ensure that the performance and cost of the final product are optimally balanced.

[0033] In some examples, the drying and shaping method includes at least one of drying, air drying, and condensation drying.

[0034] The choice of these drying and shaping methods depends on the specific production conditions and needs. For example, the drying method can quickly remove moisture from the raw material particles, improve production efficiency, and is suitable for large-scale production scenarios. Natural drying is more environmentally friendly and energy-saving, but it may take longer and is suitable for small-scale production environments or those with special requirements for environmental impact. Condensation drying can effectively remove moisture while maintaining the physical properties of the raw material particles, and is particularly suitable for occasions with high requirements for the performance of the battery packaging structure. By flexibly selecting these drying and shaping methods, it can be ensured that the battery packaging structure achieves the best moisture control effect during the processing process, thereby further improving its overall performance.

[0035] In some examples, the second semi-finished product is dried and shaped for 36 hours to 72 hours at a temperature of 40° C. to 80° C.

[0036] During the drying process, precise control of temperature and time is crucial. Too low a temperature or too short a time may result in incomplete moisture removal, affecting the stability and safety of the battery packaging structure. Too high a temperature or too long a time may cause changes in the physical properties of the raw material particles, such as deformation, cracking, etc., which will also have an adverse effect on the overall performance of the battery packaging structure. Therefore, within the above-mentioned drying conditions, careful temperature and time adjustments based on specific raw material characteristics and production requirements are the key to achieving the best drying effect. In addition, the drying process is best carried out in a closed and well-ventilated environment to avoid the intrusion of external contaminants and ensure the purity and quality of the battery packaging structure.

[0037] In a second aspect, the present application provides a battery packaging structure, which is formed by the processing method of the battery packaging structure as described above, and the battery packaging structure is a composite foam formed of at least two materials.

[0038] The composite foam formed by the above-mentioned processing method can significantly improve the stability of the battery packaging structure and effectively avoid the occurrence of slag falling problems, thereby improving the overall product quality and customer satisfaction.

[0039] In a third aspect, the present application provides a processing device for a battery packaging structure, comprising the above-mentioned die assembly. The processing device can process the battery packaging structure by the processing method for the battery packaging structure.

[0040] The composite foam formed by the above-mentioned processing equipment can significantly improve the stability of the battery packaging structure and effectively avoid the occurrence of slag falling problems, thereby improving the overall product quality and customer satisfaction.

[0041] The design of the above-mentioned processing equipment fully considers all aspects of the battery packaging structure processing to ensure the efficiency and accuracy of the processing process. The die assembly integrated in the equipment can accurately press the selected material according to the preset mold shape and size to form the required combined foam structure. In addition, the processing equipment can also be equipped with a corresponding advanced control system, which can monitor and adjust various parameters in the processing process, such as temperature, pressure and time, in real time to ensure the stability and consistency of the processing quality. Through the use of the above-mentioned processing equipment, the production efficiency of the battery packaging structure has been significantly improved, and the processing cost has also been effectively controlled. In addition, the above-mentioned equipment is easy to operate and easy to maintain, providing battery manufacturers with long-term and stable processing solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the examples or prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 It is a schematic flow chart of a processing method of a battery packaging structure in an example of the present application.

[0044] Figure 2 This is a schematic diagram of the cross-sectional structure of a die assembly before compression in a processing method of a battery packaging structure in an example of the present application.

[0045] Figure 3 This is a schematic diagram of the cross-sectional structure of a die assembly after compression in a processing method of a battery packaging structure in an example of the present application.

[0046] Figure 4 It is a schematic cross-sectional structure diagram of a method for processing a battery packaging structure in an example of the present application, in which a die assembly maintains a compressed state and performs ventilation.

[0047] Figure 5 This is a schematic diagram of the battery packaging structure in an example of the present application.

[0048] Figure 6 This is a schematic diagram of a first exploded structure of a battery packaging structure in an example of the present application.

[0049] Figure 7 This is a schematic diagram of a second explosion structure of a battery packaging structure in an example of the present application.

[0050] Reference numerals:

[0051] 100, mold groove; 200, first die tooling; 300, second die tooling; 400, first particles; 500, second particles. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific examples described here are only used to explain the present application and are not used to limit the present application.

[0053] To solve the above technical problems, please refer to Figure 1-Figure 7 As shown, the first aspect of the present application proposes a processing method for a battery packaging structure, which can improve the stability of the battery packaging structure and effectively avoid the occurrence of slag falling problems, thereby improving the overall product quality and customer satisfaction.

[0054] In existing technologies, the foam used in battery packaging structures often falls off, which not only affects the cleanliness of the internal product surface, but may even damage the performance of the product itself, causing customer dissatisfaction and complaints, leading to product returns, and further affecting the company's cost-effectiveness.

[0055] The composite foam formed by the processing method of the present application can significantly improve the stability of the battery packaging structure and effectively avoid the occurrence of slag falling problems, thereby improving the overall quality of the product and customer satisfaction.

[0056] Reference Figure 1 As shown, in some examples, the present application provides a processing method for a battery packaging structure, the processing method is processed by a die assembly, the die assembly includes a die slot 100 with a top opening, a first die tool 200 and a second die tool 300, and the steps of the processing method include:

[0057] Step S100 : adding first raw material particles into the mold tank 100 .

[0058] This step is to prepare for the processing of the first semi-finished product and ensure that the subsequent steps can proceed smoothly.

[0059] Step S200: applying pressure in the mold cavity 100 through the first compression mold tool 200 and performing the first compression molding.

[0060] This step can finalize the first semi-finished product and lay the foundation for subsequent processing.

[0061] Step S300: Cooling and forming a first semi-finished product.

[0062] The above steps can cool the first semi-finished product that has been formed to solidify it. This step can ensure that the shape and structure of the first semi-finished product are stable, providing necessary conditions for the next step of processing.

[0063] Step S400: transfer the first die tool 200 and continue to add the second raw material particles into the die groove 100. The second raw material particles and the first raw material particles are added according to a preset ratio.

[0064] This step can prepare for the composite processing of the first raw material and the second raw material, and then the second semi-finished product can be processed accordingly.

[0065] Step S500: applying pressure in the mold cavity 100 through the second compression mold tool 300 and performing a second compression molding.

[0066] This step can finalize the second semi-finished product to ensure that its shape and structure meet the design requirements.

[0067] Step S600: performing secondary cooling on the mold groove 100 as a whole, and forming a second semi-finished product after demoulding.

[0068] This step can ensure that the shape and structure of the second semi-finished product are stabilized, providing the necessary conditions for the processing of the final product.

[0069] Step S700: Drying and shaping the second semi-finished product to obtain a finished battery packaging structure.

[0070] This step can realize the finished product processing of the battery packaging structure, ensuring that the quality and performance of the product meet the requirements.

[0071] The composite foam formed by the processing method provided in this application can significantly improve the stability of the battery packaging structure, effectively avoid the occurrence of slag falling problems, and thus improve the overall quality of the product and customer satisfaction. This processing method not only improves production efficiency, but also ensures the high performance and reliability of the product.

[0072] In the above steps, the first raw material particles and the second raw material particles are both thermoplastic elastomer materials. By mixing them in a preset ratio, the finished composite foam can have better elasticity and wear resistance. In step S200 and step S500, the first compression mold 200 and the second compression mold 300 respectively perform compression molding on the first raw material particles and the second raw material particles, which can make the finished composite foam have a more uniform and dense internal structure, thereby further improving the stability and anti-slag performance of the battery packaging structure. In addition, in step S700, during the drying and shaping process of the second semi-finished product, a heat treatment can be performed as needed to further promote the cross-linking reaction of the internal materials of the composite foam, thereby enhancing the mechanical properties and heat resistance of the finished product.

[0073] Reference Figures 2 to 4 It is worth noting that during the processing, the size and shape design of the mold groove 100, the first die fixture 200 and the second die fixture 300 are customized according to the size and shape of the required battery packaging structure. This customized design ensures that the processed battery packaging structure has precise size and shape, thereby meeting the strict requirements of various electronic devices for battery packaging structures. At the same time, the mold groove 100, the first die fixture 200 and the second die fixture 300 are made of high-strength, wear-resistant materials to ensure that their accuracy and stability are maintained during long-term use.

[0074] In addition, the processing method of the present application can also fully consider environmental protection and sustainability. During the processing, the raw material particles used are all recyclable thermoplastic elastomer materials, which not only reduces pollution to the environment, but also reduces production costs. At the same time, the waste generated during the processing can also be recycled and reused, further improving the utilization rate of resources.

[0075] In summary, the processing method, battery packaging structure and processing equipment of the battery packaging structure provided in this application have significant technical advantages and practical application value. By adopting the processing method of this application, the stability and anti-slag performance of the battery packaging structure can be significantly improved, thereby improving the overall quality of the product and customer satisfaction. At the same time, the processing method of this application also has the advantages of high efficiency, low cost and environmental sustainability.

[0076] The processing method of the battery packaging structure in the above structure can be processed by using a die assembly. The above method involves multiple steps, from positioning the die tooling, secondary filling materials, secondary compression molding to secondary cooling, demoulding and drying treatment, and finally obtaining a finished battery packaging structure.

[0077] The die assembly is composed of a die slot 100, a first die fixture 200 and a second die fixture 300, and is used to apply pressure to the material during processing to form a specific shape. When filling the material, different raw material particles are processed in sequence and in a certain proportion to ensure product performance.

[0078] The processing method of the battery packaging structure may further include the following steps:

[0079] Step S800: Perform quality inspection on the finished product, including but not limited to inspection of indicators such as size, appearance, and strength, to ensure that the product meets the design requirements.

[0080] Step S900: According to the test results, the qualified products are packaged and the corresponding product manuals and warranty cards are attached to facilitate users to use and maintain them correctly.

[0081] Step S1000: Store the packaged products in the warehouse and wait for shipment. During the storage process, the storage environment of the products needs to be checked regularly to ensure that the products are not damp or deformed and maintain good quality.

[0082] Through the above processing method, the battery packaging structure of the present application has the advantages of stable structure, high strength, good waterproof and dustproof effect, etc., and can meet the use requirements in various harsh environments. At the same time, the above processing method is simple to operate and easy to realize automated production, which greatly improves production efficiency and product quality.

[0083] In addition, the die assembly also includes a heating device and a temperature control system. The heating device is arranged on the side wall or bottom of the mold groove 100 to provide heat during the compression molding process. The temperature control system is connected to the heating device to control the working state of the heating device, thereby ensuring that the molding temperature is maintained within a preset temperature range. This arrangement can further improve the accuracy and stability of compression molding and ensure the quality of the finished product of the workpiece.

[0084] In some examples, during the first compression molding process, a molding pressure of 1.5 MPa-2.5 MPa is applied, and a molding temperature of 120° C.-140° C. The molding pressure applied may also be 1.55 MPa, 1.6 MPa, 1.65 MPa, 1.7 MPa, 2 MPa, 2.3 MPa, etc., and the molding temperature may also be 123° C., 125° C., 128° C., 135° C., etc.

[0085] The selection of the above molding pressure and temperature range is intended to ensure that the material can be fully melted and fill the mold groove 100, while avoiding excessive heating that may cause material degradation or mold damage. After the first compression molding, the semi-finished product obtained has high structural strength and stability, providing a good foundation for subsequent processing steps. In addition, by accurately controlling the molding pressure and temperature, energy consumption and emissions during the processing can be further reduced, meeting the requirements of environmental protection and sustainability.

[0086] In some examples, the die assembly is provided with a spray pipe, and during the process of cooling and forming the first semi-finished product, the spray pipe sprays condensed water, the spraying time is 50s-300s, and the water temperature of the condensed water is 20℃-50℃.

[0087] The above-mentioned spraying step is designed to quickly and effectively cool the semi-finished product so that it can be quickly formed and maintain the desired shape and size. The selection of spraying time and condensed water temperature is based on in-depth research on material properties and molding processes, aiming to ensure that the cooling process is both efficient and does not adversely affect the material. By spraying condensed water, the heat on the surface of the semi-finished product can be quickly taken away, and its temperature can be reduced, thereby accelerating the curing process and improving production efficiency. At the same time, the precise control of spraying time and water temperature can also ensure uniform cooling of the semi-finished product, avoid local overheating or insufficient cooling, and further improve the quality and stability of the product. In addition, the use of condensed water for spraying also has the advantages of environmental protection and energy saving, which meets the sustainable development requirements of modern industrial production.

[0088] The spraying time may also be 60s, 70s, 80s, 100s, 150s, 180s, 250s, 300s and the like, and the temperature of the condensed water may also be 25°C, 30°C, 35°C, 40°C, 45°C, 48°C and the like.

[0089] In some examples, during the second compression molding process, the molding pressure applied is 0.4Mpa-0.8Mpa, and the molding temperature is 100°C-110°C. The molding pressure applied can also be 0.5Mpa, 0.6Mpa, 0.65Mpa, 0.7Mpa, etc., and the molding temperature can also be 95°C, 105°C, 108°C, 115°C, etc.

[0090] The above pressure range and temperature interval are set to ensure that during the second compression molding process, the material can fully flow and fill the mold cavity while maintaining an appropriate curing rate. The choice of molding pressure is intended to provide sufficient pressure to make the material fit tightly into the mold to form the desired structure and shape, while avoiding excessive pressure that may cause material rupture or mold damage. The molding temperature affects the fluidity and curing speed of the material. Too high or too low a temperature may affect the quality and performance of the final product. By precisely controlling the molding pressure and temperature, the consistency and stability of the second compression molding process can be ensured, thereby producing high-quality battery packaging structures that meet design requirements. In addition, the setting of this processing parameter also takes into account production efficiency and cost control, aiming to achieve an efficient and energy-saving production process.

[0091] In some examples, the mold groove 100 is subjected to secondary cooling as a whole, and during the process of forming the second semi-finished product after demolding, steam is passed through the mold groove 100 and ventilation is provided from top to bottom.

[0092] When the steam is passed, the second semi-finished product is swept up and down by the steam for 3-5 times, and demoulding is performed after the temperature in the mold groove 100 is reduced to 55° C.-80° C.

[0093] This cooling step is designed to further optimize the performance of the battery packaging structure. Through overall secondary cooling, the residual stress inside the material can be effectively reduced, and the dimensional stability and structural strength of the product can be improved. At the same time, the steam can transfer heat more evenly and avoid deformation or cracks caused by local overcooling or overheating.

[0094] The second semi-finished product is swept up and down by steam for 3-5 times to ensure the uniformity and controllability of the cooling process. Each time the steam passes, a part of the heat is taken away, so that the temperature in the mold groove 100 is gradually reduced. This gradual cooling method helps to reduce the thermal stress of the material during the cooling process, thereby improving the overall quality of the product.

[0095] When the temperature in the mold groove 100 drops to 55°C-80°C, the demoulding operation is performed. This temperature range is set based on the mechanical properties and curing degree of the material at the above temperature. At this temperature, the material has a certain strength and stability, and can withstand the external force during the demoulding process, and will not be deformed or damaged due to excessive temperature.

[0096] Through this series of processing steps and parameter settings, a battery packaging structure with excellent performance and quality can be produced to meet the needs of various application scenarios.

[0097] In some examples, the first raw material particles are foamed polypropylene particles, the second raw material particles are polystyrene foam particles, and the ratio of the second raw material particles to the first raw material particles is 5:1, 4:1, 3:1, 3:2 or 2:1.

[0098] Alternatively, the second raw material particles are foamed polypropylene particles, the first raw material particles are polystyrene foam particles, and the ratio of the first raw material particles to the second raw material particles is 5:1, 4:1, 3:1, 3:2 or 2:1.

[0099] The ratio selection of these raw material particles is designed to optimize the physical properties and cost-effectiveness of the battery packaging structure. Expanded polypropylene particles, with their good thermal insulation and impact resistance, provide the necessary protection for battery packaging, while polystyrene foam particles, characterized by their light weight and high strength, help reduce the overall weight while maintaining structural stability. Different ratios can meet different application requirements. For example, in scenarios where higher strength protection is required, a higher ratio of polystyrene foam particles can be selected. In situations where higher requirements are placed on thermal insulation performance, the ratio of expanded polypropylene particles can be appropriately increased. Through such raw material selection and ratio adjustment, it is possible to flexibly adapt to the design requirements of various battery packaging to ensure that the performance and cost of the final product are optimally balanced.

[0100] The above involves two different materials, namely EPS and EPP. EPS stands for polystyrene foam, while EPP stands for polypropylene foam. The processing process of this application includes two main steps: the first is "secondary compression molding", which means applying pressure to different materials using corresponding molds to change their shapes. The second is "composite molding", which means combining two already molded materials together to form a composite structure. This composite molding process may be to obtain a composite material with specific properties, such as better strength, light weight, high stability and other characteristics.

[0101] The EPS mentioned above is Expanded Polystyrene, a lightweight material with thermal insulation properties, commonly used in packaging, construction and thermal insulation. EPP is Expanded Polypropylene, a material that is impact-resistant and heat-resistant, commonly used in automotive interiors, toys and packaging materials.

[0102] In some examples, the drying and shaping method includes at least one of drying, air drying, and condensation drying.

[0103] The choice of these drying and shaping methods depends on the specific production conditions and needs. For example, the drying method can quickly remove moisture from the raw material particles, improve production efficiency, and is suitable for large-scale production scenarios. Natural drying is more environmentally friendly and energy-saving, but it may take longer and is suitable for small-scale production environments or those with special requirements for environmental impact. Condensation drying can effectively remove moisture while maintaining the physical properties of the raw material particles, and is particularly suitable for occasions with high requirements for the performance of the battery packaging structure. By flexibly selecting these drying and shaping methods, it can be ensured that the battery packaging structure achieves the best moisture control effect during the processing process, thereby further improving its overall performance.

[0104] In some examples, the second semi-finished product is dried and shaped for 36 hours to 72 hours at a temperature of 40° C. to 80° C.

[0105] During the drying process, precise control of temperature and time is crucial. Too low a temperature or too short a time may result in incomplete moisture removal, affecting the stability and safety of the battery packaging structure. Too high a temperature or too long a time may cause changes in the physical properties of the raw material particles, such as deformation, cracking, etc., which will also have an adverse effect on the overall performance of the battery packaging structure. Therefore, within the above-mentioned drying conditions, careful temperature and time adjustments based on specific raw material characteristics and production requirements are the key to achieving the best drying effect. In addition, the drying process is best carried out in a closed and well-ventilated environment to avoid the intrusion of external contaminants and ensure the purity and quality of the battery packaging structure.

[0106] In special circumstances, such as when the raw material humidity is high or the ambient humidity is high, in order to adapt to such humid conditions, the drying time can be extended accordingly to ensure that the moisture is fully removed. At this time, the drying time can be set to 48 hours or even longer, and the specific duration needs to be flexibly adjusted according to actual conditions. At the same time, the drying temperature must also be kept within an appropriate range to avoid adverse effects of excessively high or low temperatures on the raw material particles. Through such adaptive adjustments, it can be ensured that under various production conditions, the battery packaging structure can achieve the best moisture control effect, thereby maintaining its stability and safety.

[0107] Reference Figures 5 to 7 In a second aspect, the present application provides a battery packaging structure, which is formed by the processing method of the battery packaging structure as described above, and the battery packaging structure is a composite foam formed of at least two materials.

[0108] The composite foam formed by the above-mentioned processing method can significantly improve the stability of the battery packaging structure and effectively avoid the occurrence of slag falling problems, thereby improving the overall product quality and customer satisfaction.

[0109] The above-mentioned combined foam design not only enhances the strength and durability of the battery packaging structure, but also improves its moisture absorption and moisture resistance based on the selection of materials. For example, one material may be mainly responsible for providing structural support to ensure the stability and protection of the battery in the package. The other material focuses on the moisture absorption function, effectively absorbing and locking moisture that may remain in the package, further ensuring the safety performance of the battery. By carefully selecting and matching these two or more materials, the battery packaging structure of the present application achieves a perfect combination of functionality and durability. In addition, the above-mentioned battery packaging structure is easy to process and form, and can adapt to various complex battery shapes and size requirements, providing battery manufacturers with greater design flexibility and production efficiency.

[0110] Reference Figures 1 to 7 In a third aspect, the present application provides a processing device for a battery packaging structure, comprising the die assembly as described above. The processing device can process the battery packaging structure by the processing method for the battery packaging structure.

[0111] The composite foam formed by the above-mentioned processing equipment can significantly improve the stability of the battery packaging structure and effectively avoid the occurrence of slag falling problems, thereby improving the overall product quality and customer satisfaction.

[0112] The design of the above-mentioned processing equipment fully considers all aspects of the battery packaging structure processing to ensure the efficiency and accuracy of the processing process. The die assembly integrated in the equipment can accurately press the selected material according to the preset mold shape and size to form the required combined foam structure. In addition, the processing equipment can also be equipped with a corresponding advanced control system, which can monitor and adjust various parameters in the processing process, such as temperature, pressure and time, in real time to ensure the stability and consistency of the processing quality. Through the use of the above-mentioned processing equipment, the production efficiency of the battery packaging structure has been significantly improved, and the processing cost has also been effectively controlled. In addition, the above-mentioned equipment is easy to operate and easy to maintain, providing battery manufacturers with long-term and stable processing solutions.

[0113] The same or similar reference numerals in the drawings of this application correspond to the same or similar parts. In the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0114] The above are only preferred examples of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for processing a battery packaging structure, characterized in that: The processing method is processed by a die assembly, the die assembly includes a die slot with a top opening, a first die fixture and a second die fixture, and the processing method includes the following steps: Adding first raw material particles into the mold groove; Applying pressure in the mold groove by the first compression mold tool and performing a first compression molding; Cooling and forming a first semi-finished product; Transferring the first die tooling, and continuing to add second raw material particles into the die groove, wherein the second raw material particles and the first raw material particles are added according to a preset ratio; Applying pressure in the mold groove by the second compression mold tooling and performing a second compression molding; The mold groove is subjected to secondary cooling as a whole, and a second semi-finished product is formed after demoulding; The second semi-finished product is dried and shaped to obtain the finished battery packaging structure.

2. The processing method of the battery packaging structure according to claim 1, characterized in that: During the first compression molding process, a molding pressure of 1.5 MPa-2.5 MPa is applied, and a molding temperature of 120° C.-140° C. is applied.

3. The processing method of the battery packaging structure according to claim 1, characterized in that: The die assembly is provided with a spray pipe. During the cooling and forming process of the first semi-finished product, the spray pipe sprays condensed water. The spraying time is 50s-300s. The water temperature of the condensed water is 20°C-50°C.

4. The processing method of the battery packaging structure according to claim 1, characterized in that: During the second compression molding process, a molding pressure of 0.4Mpa-0.8Mpa is applied, and a molding temperature of 100°C-110°C is applied.

5. The processing method of the battery packaging structure according to claim 1, characterized in that: The mold groove is subjected to secondary cooling as a whole, and during the process of forming the second semi-finished product after demoulding, steam is passed through the mold groove, and ventilation is provided up and down; When the steam is passed, the second semi-finished product is swept up and down by the steam for 3-5 times, and demoulding is performed after the temperature in the mold groove drops to 55° C.-80° C.

6. The processing method of the battery packaging structure according to any one of claims 1 to 5, characterized in that: The first raw material particles are foamed polypropylene particles, the second raw material particles are polystyrene foam particles, and the ratio of the second raw material particles to the first raw material particles is 5:1, 4:1, 3:1, 3:2 or 2:1; Alternatively, the second raw material particles are foamed polypropylene particles, the first raw material particles are polystyrene foam particles, and the ratio of the first raw material particles to the second raw material particles is 5:1, 4:1, 3:1, 3:2 or 2:

1.

7. The processing method of the battery packaging structure according to claim 1, characterized in that: The drying and shaping method includes at least one of drying, natural drying and condensation drying.

8. The processing method of the battery packaging structure according to claim 7, characterized in that: The second semi-finished product is dried and shaped for 36h-72h at a drying temperature of 40°C-80°C.

9. A battery packaging structure, characterized in that: The battery packaging structure is formed by the processing method for a battery packaging structure according to any one of claims 1 to 8, and the battery packaging structure is a composite foam formed of at least two materials.

10. A processing device for a battery packaging structure, characterized in that: It comprises the die assembly as described in any one of claims 1 to 8; the processing equipment is capable of processing the battery packaging structure through the processing method of the battery packaging structure.

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