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, and the processing method comprises the following steps: moving a first pressing mold tool into a mold groove from the bottom of the mold groove, and matching the first pressing mold tool with the mold groove to form a containing cavity; the containing cavity is sequentially filled with raw material particles of at least two materials according to a preset proportion, and the raw material particles of different materials are layered; the second pressing mold tool is moved into the mold groove from the top of the mold groove, and a compression molding area is formed between the first pressing mold tool and the second pressing mold; the first pressing mold tool and the second pressing mold tool apply pressure to the middle at the same time, compression molding is conducted, and the molding temperature is maintained at the preset temperature; the pressing die assembly is cooled; the cooled pressing mold assembly is demolded, and a semi-finished product of the machined part is obtained; and the semi-finished product of the machined part is dried, and a finished product of the machined part is obtained. The stability of the battery packaging structure can be improved, and the problem of slag falling is effectively avoided.

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 processing method for a battery packaging structure, the processing method is processed by a die assembly, the die assembly includes a mold groove that is transparent from top to bottom, a first die tooling and a second die tooling, and the processing method includes the following steps:

[0006] Step S100: Move the first pressing mold tool from the bottom of the mold groove into the mold groove, and the first pressing mold tool cooperates with the mold groove to form a receiving cavity.

[0007] The above steps can form a receiving cavity through the cooperation of the first die tooling and the die groove for subsequent filling operations.

[0008] Step S200: Raw material particles of at least two materials are sequentially filled into the containing cavity according to a preset ratio, and the raw material particles of different materials are layered.

[0009] These raw material particles of different materials are arranged in layers during the filling process to ensure the quality of the final product.

[0010] Step S300: Move the second compression mold tool from the top of the mold groove into the mold groove, and form a compression molding area between the first compression mold tool and the second compression mold.

[0011] The above steps can form a compression molding area between the first compression mold tool and the second compression mold tool for the next compression molding operation.

[0012] Step S400: The first compression mold and the second compression mold apply pressure to the middle at the same time to perform compression molding, and the molding temperature is maintained at a preset temperature.

[0013] In the above steps, the molding temperature needs to be maintained within a preset temperature range to ensure the quality of the processed parts.

[0014] Step S500: Cooling the die assembly.

[0015] After molding is completed, the die assembly needs to be cooled to prevent the workpiece from deforming during the cooling process.

[0016] Step S600: demoulding the die assembly after cooling to obtain a semi-finished product of the workpiece.

[0017] The die assembly is demoulded to obtain a semi-finished product of the workpiece, which needs to be further processed to become a finished product.

[0018] Step S700: Drying the semi-finished product of the workpiece to obtain the finished product of the workpiece.

[0019] Through the drying process, excess moisture in the semi-finished product can be removed, and finally a dry, quality-qualified finished product is obtained.

[0020] 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.

[0021] In some examples, during the compression molding process, the pressure applied simultaneously by the first compression mold tool and the second compression mold tool to the middle is 0.5Mpa-1.0Mpa, and the preset temperature is 120°C-140°C.

[0022] The selection of this pressure range and temperature range can ensure that the plastic material is fully melted and evenly distributed during the compression molding process, thereby forming a battery packaging structural component with a compact structure and a smooth appearance. In addition, this parameter setting also helps to reduce bubbles and defects during the molding process, further improving the overall quality and durability of the product. By precisely controlling the pressure and temperature of compression molding, the processing method of this application can achieve precise control of the size and shape of the battery packaging structural components to meet diverse design requirements.

[0023] In some examples, during the compression molding process, the first compression mold tool and the second compression mold tool simultaneously apply pressure to the middle and maintain the pressure for 30s-80s, while applying negative pressure vacuum suction to the compression molding area and releasing steam pressure.

[0024] Alternatively, during the compression molding process, the first compression mold tool and the second compression mold tool simultaneously apply pressure to the middle and maintain the pressure for 30s-80s, and then apply negative pressure vacuum suction to the compression molding area and release the steam pressure.

[0025] These two compression molding methods further enhance the uniformity and density of the plastic material during the molding process. Maintaining a certain pressure time ensures that the plastic material is fully solidified in the mold and avoids the problem of loose structure caused by insufficient solidification. At the same time, applying negative pressure vacuum suction can remove excess gas in the compression molding area and reduce the generation of bubbles, making the interior of the battery packaging structural components more compact and improving the waterproof and dustproof performance. Releasing steam pressure helps the plastic material reduce shrinkage during the cooling process and maintain dimensional stability, thereby further improving the overall quality and durability of the product. Through such a processing method, the battery packaging structural components of the present application not only have higher strength and stability, but also can meet more diverse design requirements.

[0026] In some examples, the pressure of the negative pressure vacuum suction is -0.03 MPa to -0.6 MPa.

[0027] The setting of this negative pressure range effectively promotes the discharge of gas in the compression molding area, which not only avoids internal defects of the product caused by residual gas, but also ensures the close fit of the plastic material during the molding process. At the same time, this negative pressure suction range not only ensures the full discharge of gas, but also avoids the damage to the plastic material structure caused by excessive suction, thereby maintaining the integrity of the product. By precisely controlling the strength of the negative pressure vacuum suction, the processing method of this application further improves the performance and reliability of battery packaging structural components.

[0028] In some examples, two types of raw material particles are provided, including first particles and second particles, the first particles are foamed polyolefin particles or pearl cotton particles, and the second particles are polystyrene foam particles.

[0029] The mixed use of these two raw material particles can make full use of their respective advantages. Foamed polyolefin particles or pearl cotton particles have good elasticity and cushioning properties, which can absorb and disperse external force impact to a certain extent and protect the battery from damage. Polystyrene foam particles have excellent lightness and thermal insulation properties, which help to reduce the weight of the entire battery packaging structure and improve its thermal insulation effect in low temperature environments. By reasonably adjusting the ratio and distribution of these two particles, the comprehensive performance of the battery packaging structure can be further optimized to meet different application requirements.

[0030] In some examples, the preset ratio is one of 1:2, 1:4, 2:3, 1:3, 1:5, 2:4, and 2:5.

[0031] These preset ratios refer to the proportional relationship between different materials (such as GPO, EPE, EPS, etc.) when manufacturing battery packaging structures. For example, when the ratio is 1:2, it may mean that a certain base material accounts for one part and another reinforcement or auxiliary material accounts for two parts. The choice of this ratio is intended to optimize the performance of the battery packaging structure, such as improving its strength, thermal insulation or buffering capacity. By adjusting the ratio of these materials, the specific requirements of the battery packaging structure for different application scenarios can be met. During the actual processing process, the staff will accurately measure various materials according to the preset ratio to ensure that the quality and performance of the final product meet the design requirements.

[0032] In some examples, the drying treatment method used for the semi-finished product of the workpiece includes at least one of drying, natural drying, and condensation drying.

[0033] Among them, when the semi-finished products of the processed parts are dried naturally, the drying time is 8h-24h, and the drying environment temperature is 20℃-30℃.

[0034] When drying is used, it can be done in professional drying equipment, and by controlling the temperature and time, the semi-finished products of the workpiece can be dried quickly and evenly, thereby avoiding performance degradation or quality problems caused by excessive humidity. The drying temperature is usually set between 40℃-60℃, and the time is determined according to the size and thickness of the workpiece to ensure complete removal of moisture.

[0035] Condensation drying is suitable for workpieces that are temperature sensitive or require more precise drying control. By reducing the ambient pressure and temperature, water vapor is condensed and discharged on the surface of the workpiece, thereby achieving the purpose of drying. This method can more accurately control the drying process and avoid material deformation or performance changes caused by high temperature.

[0036] In addition, when choosing a drying method, the material, shape and final application requirements of the workpiece must also be considered. For example, for some special materials, a specific drying method may be required to avoid adverse effects on their performance.

[0037] In some examples, a spray pipe is provided on the peripheral side of the die assembly, and the spray direction of the spray pipe is toward the die assembly. During the cooling process of the die assembly, the spray pipe sprays condensed water toward the die assembly, and the spraying time is 50s-300s, and the temperature of the condensed water is 10℃-45℃.

[0038] By spraying condensed water, the temperature of the die assembly can be effectively reduced, the cooling process of the battery packaging structure can be accelerated, and thus production efficiency can be improved. At the same time, the precise control of the temperature and spraying time of the condensed water ensures the uniformity and stability of the cooling process, and avoids deformation or quality degradation of the lining caused by uneven cooling. In addition, the design of the die assembly also takes into account easy disassembly and cleaning, so as to facilitate subsequent processing operations and maintenance.

[0039] 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.

[0040] 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.

[0041] In a second 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.

[0042] The design of the above processing equipment fully considers processing efficiency and precision. By integrating the above die assembly, the stability and consistency of the battery packaging structure during the processing is ensured. In addition, the processing equipment is also equipped with an advanced control system that can accurately control various parameters during the processing, such as temperature, pressure and time, so as to further improve the processing quality and efficiency. This processing equipment is suitable for large-scale production and can meet the high market demand for battery packaging structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] 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.

[0044] Figure 1 It is a schematic flow chart of a processing method of a battery packaging structure in an example of the present application.

[0045] 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.

[0046] 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.

[0047] Figure 4 This is a schematic diagram of the battery packaging structure in an example of the present application.

[0048] Figure 5 This is a schematic diagram of a first exploded structure of a battery packaging structure in an example of the present application.

[0049] Figure 6 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 6 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] Reference Figure 1 As shown, in some examples, the processing method of the battery packaging structure is processed by a die assembly, the die assembly includes a mold groove 100 that is transparent from top to bottom, a first die tool 200 and a second die tool 300, and the processing method includes the following steps:

[0055] Step S100: Move the first die fixture 200 from the bottom of the mold groove 100 into the mold groove 100 , and the first die fixture 200 cooperates with the mold groove 100 to form a receiving cavity.

[0056] The above steps can be performed by the first die tool 200 cooperating with the mold groove 100 to form a receiving cavity for subsequent filling operations.

[0057] Step S200: Raw material particles of at least two materials are sequentially filled into the containing cavity according to a preset ratio, and the raw material particles of different materials are layered.

[0058] These raw material particles of different materials are arranged in layers during the filling process to ensure the quality of the final product.

[0059] Step S300: Move the second compression mold 300 from the top of the mold cavity 100 to the inside of the mold cavity 100, and form a compression molding area between the first compression mold 200 and the second compression mold.

[0060] The above steps can form a compression molding area between the first compression molding tool 200 and the second compression molding tool 300 for the next compression molding operation.

[0061] Step S400: The first compression mold 200 and the second compression mold 300 simultaneously apply pressure to the middle and perform compression molding, and the molding temperature is maintained at a preset temperature.

[0062] In the above steps, the molding temperature needs to be maintained within a preset temperature range to ensure the quality of the processed parts.

[0063] Step S500: Cooling the die assembly.

[0064] After molding is completed, the die assembly needs to be cooled to prevent the workpiece from deforming during the cooling process.

[0065] Step S600: demoulding the die assembly after cooling to obtain a semi-finished product of the workpiece.

[0066] The die assembly is demoulded to obtain a semi-finished product of the workpiece, which needs to be further processed to become a finished product.

[0067] Step S700: Drying the semi-finished product of the workpiece to obtain the finished product of the workpiece.

[0068] Through the drying process, excess moisture in the semi-finished product can be removed, and finally a dry, quality-qualified finished product is obtained.

[0069] 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.

[0070] 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.

[0071] The processing method of the battery packaging structure in the above structure can be processed by using a die assembly. The method involves multiple steps, from positioning the die tooling, filling materials, compression molding to cooling, demoulding and drying, and finally obtaining a finished battery packaging structure.

[0072] The die assembly is a whole composed of a die slot 100, a first die fixture 200 and a second die fixture 300, which is used to apply pressure to the material during the processing to form a specific shape. When filling the material, different raw material particles are mixed in a certain proportion to ensure product performance. During the filling process, different types of raw material particles are filled separately to form a clearly layered structure. The molding temperature is the temperature under which the material needs to be processed during the compression molding process to ensure the molding quality. Demolding is the action of removing the workpiece from the mold after the molding is completed, which is an important step in the production process.

[0073] The processing method of the battery packaging structure may further include the following steps:

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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 processing method is simple to operate and easy to realize automated production, which greatly improves production efficiency and product quality.

[0078] 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.

[0079] In some examples, during the compression molding process, the first compression mold 200 and the second compression mold 300 simultaneously apply a pressure of 0.5 MPa-1.0 MPa to the middle, and the preset temperature is 120° C.-140° C.

[0080] The selection of this pressure range and temperature range can ensure that the plastic material is fully melted and evenly distributed during the compression molding process, thereby forming a battery packaging structural component with a compact structure and a smooth appearance. In addition, this parameter setting also helps to reduce bubbles and defects during the molding process, further improving the overall quality and durability of the product. By precisely controlling the pressure and temperature of compression molding, the processing method of this application can achieve precise control of the size and shape of the battery packaging structural components to meet diverse design requirements.

[0081] Reference Figure 2 and Figure 3 As shown, in some examples, during the compression molding process, the first compression mold tool 200 and the second compression mold tool 300 simultaneously apply pressure to the middle and maintain the pressure for 30s-80s, while applying negative pressure vacuum suction to the compression molding area and releasing steam pressure.

[0082] Alternatively, during the compression molding process, the first compression mold 200 and the second compression mold 300 simultaneously apply pressure to the middle and maintain the pressure for 30s-80s, and then apply negative pressure vacuum suction to the compression molding area and release the steam pressure.

[0083] These two compression molding methods further enhance the uniformity and density of the plastic material during the molding process. Maintaining a certain pressure time ensures that the plastic material is fully solidified in the mold and avoids the problem of loose structure caused by insufficient solidification. At the same time, applying negative pressure vacuum suction can remove excess gas in the compression molding area and reduce the generation of bubbles, making the interior of the battery packaging structural components more compact and improving the waterproof and dustproof performance. Releasing steam pressure helps the plastic material reduce shrinkage during the cooling process and maintain dimensional stability, thereby further improving the overall quality and durability of the product. Through such a processing method, the battery packaging structural components of the present application not only have higher strength and stability, but also can meet more diverse design requirements.

[0084] In some examples, the pressure of the negative pressure vacuum suction is -0.03 MPa to -0.6 MPa.

[0085] The setting of this negative pressure range effectively promotes the discharge of gas in the compression molding area, which not only avoids internal defects of the product caused by residual gas, but also ensures the close fit of the plastic material during the molding process. At the same time, this negative pressure suction range not only ensures the full discharge of gas, but also avoids the damage to the plastic material structure caused by excessive suction, thereby maintaining the integrity of the product. By precisely controlling the strength of the negative pressure vacuum suction, the processing method of this application further improves the performance and reliability of battery packaging structural components.

[0086] At the same time, the combination of negative pressure vacuum suction and steam pressure release can also effectively promote uniform cooling of plastic materials, avoid internal stress and deformation during the cooling process, and further improve the dimensional stability and shape accuracy of the product. By optimizing the process parameters of compression molding, the processing method of this application not only ensures product quality, but also improves production efficiency and flexibility.

[0087] In some examples, there are two types of raw material particles, including first particles 400 and second particles 500. The first particles 400 are foamed polyolefin particles or pearl cotton particles, and the second particles 500 are polystyrene foam particles. The density of the raw material particles can be 0.030 grams per cubic centimeter, which is set according to needs and is not limited to this density.

[0088] The mixed use of these two raw material particles can make full use of their respective advantages. Foamed polyolefin particles or pearl cotton particles have good elasticity and cushioning properties, which can absorb and disperse external force impact to a certain extent and protect the battery from damage. Polystyrene foam particles have excellent lightness and thermal insulation properties, which help to reduce the weight of the entire battery packaging structure and improve its thermal insulation effect in low temperature environments. By reasonably adjusting the ratio and distribution of these two particles, the comprehensive performance of the battery packaging structure can be further optimized to meet different application requirements.

[0089] The above three materials correspond to three kinds of foam materials, namely GPO, EPE and EPS, which have different characteristics and uses. GPO usually refers to expanded polyolefin, EPE refers to expanded polyethylene, and EPS refers to expanded polystyrene. These materials are widely used in packaging, insulation, cushioning and other fields.

[0090] Specifically, the material of the present application is a foam material, which is a material with a large number of pores or small holes, usually made of plastic or other polymers, and has the characteristics of light weight, heat insulation, shock absorption, etc. Expanded polyolefin (GPO) is a lightweight, heat-resistant, and chemically resistant foam material, commonly used in automotive interiors, packaging materials, etc. Pearl cotton (EPE) is a soft foam material with cushioning properties, commonly used in the production of packaging materials, thermal insulation materials, etc. Polystyrene foam (EPS) is a lightweight, heat-insulating, and sound-insulating foam material, widely used in building insulation, food packaging, model making and other fields.

[0091] This application can solve the problem of customer complaints and returns caused by EPS residue shedding and dirtiness, with low cost and without adding new molds.

[0092] In some examples, the preset ratio is one of 1:2, 1:4, 2:3, 1:3, 1:5, 2:4, and 2:5.

[0093] These preset ratios refer to the proportional relationship between different materials (such as GPO, EPE, EPS, etc.) when manufacturing battery packaging structures. For example, when the ratio is 1:2, it may mean that a certain base material accounts for one part and another reinforcement or auxiliary material accounts for two parts. The choice of this ratio is intended to optimize the performance of the battery packaging structure, such as improving its strength, thermal insulation or buffering capacity. By adjusting the ratio of these materials, the specific requirements of the battery packaging structure for different application scenarios can be met. During the actual processing process, the staff will accurately measure various materials according to the preset ratio to ensure that the quality and performance of the final product meet the design requirements.

[0094] In some examples, the drying treatment method used for the semi-finished product of the workpiece includes at least one of drying, natural drying, and condensation drying.

[0095] Among them, when the semi-finished products of the processed parts are dried naturally, the drying time is 8h-24h, and the drying environment temperature is 20℃-30℃.

[0096] When drying is used, it can be done in professional drying equipment, and by controlling the temperature and time, the semi-finished products of the workpiece can be dried quickly and evenly, thereby avoiding performance degradation or quality problems caused by excessive humidity. The drying temperature is usually set between 40℃-60℃, and the time is determined according to the size and thickness of the workpiece to ensure complete removal of moisture.

[0097] Condensation drying is suitable for workpieces that are temperature sensitive or require more precise drying control. By reducing the ambient pressure and temperature, water vapor is condensed and discharged on the surface of the workpiece, thereby achieving the purpose of drying. This method can more accurately control the drying process and avoid material deformation or performance changes caused by high temperature.

[0098] In addition, when choosing a drying method, the material, shape and final application requirements of the workpiece must also be considered. For example, for some special materials, a specific drying method may be required to avoid adverse effects on their performance.

[0099] A first molding cavity is disposed on a surface of the first die tool 200 close to the second die tool 300 , and a second molding cavity is disposed on a surface of the second die tool 300 close to the first die tool 200 .

[0100] The finished product processed in the present application may specifically be a battery packaging lining of a battery packaging structure, the battery packaging lining being used to place a plurality of battery cells at the same time, the battery packaging lining being a combination foam formed of at least two materials, and the battery packaging lining comprising a first combination portion and a first combination portion.

[0101] The first assembly part is arranged on the first side of the inner lining of the battery package. A plurality of placement cavities are arranged on the first assembly part. The placement cavities are used to place the bottom of the battery cell. Each placement cavity corresponds to a battery cell.

[0102] The second assembly part is arranged on the second side of the battery packaging lining, the second side being the side opposite to the first side, and a plurality of accommodating cavities are arranged on the second assembly part, the accommodating cavities are used to accommodate the top poles of the battery cells, and each accommodating cavity corresponds to a battery cell.

[0103] The first molding cavity mentioned above can be used to mold a plurality of placement cavities, and the second molding cavity mentioned above can be used to mold a plurality of accommodation cavities.

[0104] In some examples, the applied pressure of the first die tool 200 and the second die tool 300 is maintained at a first preset pressure, while negative pressure vacuum suction and lateral pressure are released and maintained in a negative pressure state for a preset time.

[0105] Under negative pressure, the combined foam material in the first molding cavity and the second molding cavity can fit the mold surface more closely to ensure molding accuracy. The control of the preset time ensures that the material is fully cured to achieve the required strength and shape stability. In addition, the processing method also includes removing the molded battery packaging liner from the mold and performing necessary inspection and trimming steps to ensure the quality and performance of the final product.

[0106] In some examples, a spray pipe is provided on the peripheral side of the die assembly, and the spray direction of the spray pipe is toward the die assembly. During the cooling process of the die assembly, the spray pipe sprays condensed water toward the die assembly, and the spraying time is 50s-300s, and the temperature of the condensed water is 10℃-45℃.

[0107] By spraying condensed water, the temperature of the die assembly can be effectively reduced, the cooling process of the battery packaging structure can be accelerated, and thus production efficiency can be improved. At the same time, the precise control of the temperature and spraying time of the condensed water ensures the uniformity and stability of the cooling process, and avoids deformation or quality degradation of the lining caused by uneven cooling. In addition, the design of the die assembly also takes into account easy disassembly and cleaning, so as to facilitate subsequent processing operations and maintenance.

[0108] Reference Figures 4 to 6 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.

[0109] 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.

[0110] Specifically, the design of the above-mentioned battery packaging structure fully considers the protection and stability of the battery. The selection of the combined foam material not only provides a good buffering effect, effectively preventing the battery from being impacted and vibrated during transportation and use, but also ensures the lightness and durability of the battery packaging structure. In addition, through a specific processing method, different materials can be tightly combined to avoid performance degradation caused by material separation. This battery packaging structure is suitable for batteries of various types and sizes and can meet the needs of different application scenarios.

[0111] 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.

[0112] The design of the above processing equipment fully considers processing efficiency and precision. By integrating the above die assembly, the stability and consistency of the battery packaging structure during the processing is ensured. In addition, the processing equipment is also equipped with an advanced control system that can accurately control various parameters during the processing, such as temperature, pressure and time, so as to further improve the processing quality and efficiency. This processing equipment is suitable for large-scale production and can meet the high market demand for battery packaging structures.

[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 mold groove that is transparent from top to bottom, a first die tool and a second die tool, and the steps of the processing method include: Move the first die tool from the bottom of the die groove into the die groove, so that the first die tool cooperates with the die groove to form a receiving cavity; Filling the containing cavity with raw material particles of at least two materials in sequence according to a preset ratio, and the raw material particles of different materials are layered; Move the second die tool from the top of the mold slot into the mold slot, and form a compression molding area between the first die tool and the second die; The first die tool and the second die tool simultaneously apply pressure to the middle and perform compression molding, and the molding temperature is maintained at a preset temperature; Cooling the die assembly; Demolding the die assembly after cooling to obtain a semi-finished product of the workpiece; The semi-finished product of the workpiece is dried to obtain the finished product of the workpiece.

2. The processing method of the battery packaging structure according to claim 1, characterized in that: During the compression molding process, the pressure applied simultaneously by the first compression mold tool and the second compression mold tool to the middle is 0.5Mpa-1.0Mpa, and the preset temperature is 120°C-140°C.

3. The processing method of the battery packaging structure according to claim 2, characterized in that: During the compression molding process, the first compression mold tool and the second compression mold tool simultaneously apply pressure to the middle and maintain the pressure for 30s-80s, and at the same time apply negative pressure vacuum suction to the compression molding area and release steam pressure; Alternatively, during the compression molding process, the first compression mold tool and the second compression mold tool simultaneously apply pressure to the middle and maintain the pressure for 30s-80s, and then apply negative pressure vacuum suction to the compression molding area and release steam pressure.

4. The processing method of the battery packaging structure according to claim 3, characterized in that: The pressure of the negative pressure vacuum suction force is -0.03Mpa to -0.6Mpa.

5. The processing method of the battery packaging structure according to claim 1, characterized in that: The raw material particles are provided in two types, including first particles and second particles, the first particles are foamed polyolefin particles or pearl cotton particles, and the second particles are polystyrene foam particles.

6. The processing method of the battery packaging structure according to claim 5, characterized in that: The preset ratio is one of 1:2, 1:4, 2:3, 1:3, 1:5, 2:4, and 2:

5.

7. The processing method of the battery packaging structure according to claim 1, characterized in that: The drying method used for the semi-finished product of the workpiece includes at least one of drying, natural drying and condensation drying; Wherein, when the semi-finished product of the workpiece is dried naturally, the drying time is 8h-24h and the drying environment temperature is 20℃-30℃.

8. The processing method of the battery packaging structure according to claim 1, characterized in that: A spray pipe is arranged on the peripheral side of the die assembly, and the spray direction of the spray pipe is toward the die assembly. During the cooling process of the die assembly, the spray pipe sprays condensed water toward the die assembly, and the spraying time is 50s-300s. The temperature of the condensed water is 10℃-45℃.

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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