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WO2021042939A1 - Dispositif électronique, couvercle de batterie, et son procédé de fabrication - Google Patents

Dispositif électronique, couvercle de batterie, et son procédé de fabrication Download PDF

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Publication number
WO2021042939A1
WO2021042939A1 PCT/CN2020/107928 CN2020107928W WO2021042939A1 WO 2021042939 A1 WO2021042939 A1 WO 2021042939A1 CN 2020107928 W CN2020107928 W CN 2020107928W WO 2021042939 A1 WO2021042939 A1 WO 2021042939A1
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WO
WIPO (PCT)
Prior art keywords
mold
glass sheet
battery cover
electronic device
manufacturing
Prior art date
Application number
PCT/CN2020/107928
Other languages
English (en)
Chinese (zh)
Inventor
邹攀
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2021042939A1 publication Critical patent/WO2021042939A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This application relates to the technical field of manufacturing processes of electronic devices, and in particular to an electronic device, a battery cover, and a manufacturing method thereof.
  • the shells of most mobile phones currently on the market have a sandwich structure that combines a glass battery cover, an aluminum alloy middle frame, and a screen glass cover. There is a seam between the aluminum alloy middle frame and the glass battery cover, which affects the user's sense of holding and destroys the feeling of integration of the entire mobile phone casing.
  • the glass shells with stable and reliable mass production are usually made into curved surfaces with curved surfaces and flat surfaces by hot pressing, which has a trend of homogeneity.
  • the concave and convex state of the mold surface will be transferred when the mold is pressed, that is, mold printing.
  • mold printing is serious, it is difficult to remove by polishing, and the roughness of the inner surface of the glass is 1-10um. Therefore, the existing hot pressing Molding technology
  • the molding temperature is generally limited to the softening point temperature of the glass. Due to the structure of the integrated glass, the height of the glass itself and the blocking of the middle frame, it is difficult for the polishing brush to touch the inner round corners where the middle frame and the battery cover are connected during polishing.
  • the glass needs to be CNC processed to form the glass into the required shape.
  • This solution also has the following disadvantages: 1. Long processing time, the required CNC processing time is 3-5 hours, and the cost is relatively high; 2. The glass is fragile during the processing, and the glass is easily broken due to the existence of micro cracks during the processing of the double-sided CNC processing of the glass; 3. It is difficult to remove the knife marks of the concave CNC processing, and it takes 2-3 hours of polishing time, and the polishing time is too long. Long will lead to other defects, such as sag and so on.
  • the present application provides an electronic device, a battery cover, and a manufacturing method thereof.
  • the electronic device, a battery cover, and a manufacturing method thereof have the advantages of short processing cycle and high yield.
  • the manufacturing mold includes a first mold and a second mold, the first mold has a groove, and the second mold has a protrusion ,
  • the manufacturing method includes: selecting a glass sheet; placing the glass sheet in the first mold, and the glass sheet and the groove define a sealed cavity; and covering the second mold on the glass Sheet, the protrusion faces the groove, and the protrusion is in contact with the glass sheet; the first mold, the second mold, and the glass sheet are heated; the sealed cavity is heated Vacuum is applied to deform the glass sheet to a predetermined shape.
  • the glass has the characteristics of being softened by heat, and the glass sheet can be processed into a predetermined shape by using the process of heating and vacuuming, thereby simplifying the process of the battery cover , Improve the yield rate, which can reduce the production cycle and save production costs.
  • the electronic device includes a battery cover manufactured according to the method for manufacturing the battery cover of the electronic device as described above.
  • the glass has the characteristics of being softened by heat, and the glass sheet can be processed into a predetermined shape by using the process of heating and vacuuming. This can simplify the process of the battery cover, improve the yield, and then Can reduce the production cycle and save production costs.
  • the battery cover according to the embodiment of the present application is used in an electronic device.
  • the battery cover includes a body and a flange, the body is connected with the flange and defines a battery compartment, and the inner wall of the battery compartment has a texture.
  • the battery cover of the embodiment of the present application by designing the battery cover as a structure including a body and a flange, and setting the texture on the inner wall of the battery compartment, on the one hand, the process of the battery cover can be simplified and the production of the battery cover can be shortened. Cycle; On the other hand, it can also increase the diversity of the battery cover shape.
  • Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a manufacturing mold according to an embodiment of the present application, in which the glass sheet is not deformed;
  • Fig. 3 is a schematic structural diagram of a manufacturing mold according to an embodiment of the present application, in which the glass sheet has been deformed;
  • Figure 4 is an exploded view of a manufacturing mold according to an embodiment of the present application, in which the glass sheet has been deformed;
  • Fig. 5 is a schematic structural diagram of a battery cover of an electronic device according to an embodiment of the present application.
  • FIG. 6 is a partial structural diagram of a glass sheet of an electronic device according to an embodiment of the present application, in which the texture of the glass sheet is not trimmed;
  • FIG. 7 is a schematic diagram of a partial structure of a glass sheet of an electronic device according to an embodiment of the present application, in which the texture of the glass sheet has been trimmed;
  • Fig. 8 is a flowchart of a method for manufacturing a battery cover according to an embodiment of the present application.
  • Fig. 9 is a flowchart of a method for manufacturing a battery cover according to an embodiment of the present application.
  • Fig. 10 is a flowchart of a method for manufacturing a battery cover according to an embodiment of the present application.
  • Battery cover 110 body 111, flange 112, rounded corner 113,
  • the battery cover 110 can be used on the electronic device 100, and the electronic device 100 can be a mobile phone, a tablet computer, a notebook computer, or a wearable device.
  • the battery cover 110 of the electronic device 100 may define a battery compartment for holding components such as batteries or circuit boards.
  • the battery cover 110 can be used in the electronic device 100.
  • the battery cover 110 can include a body 111 and a flange 112.
  • the body 111 is connected to the flange 112 and defines a battery compartment.
  • the inner wall surface of the battery compartment has a texture.
  • the battery cover 110 of the embodiment of the present application by designing the battery cover 110 as a structure including a main body 111 and a flange 112, and providing a texture on the inner wall of the battery compartment, on the one hand, the process of the battery cover 110 can be simplified.
  • the production cycle of the battery cover 110 is shortened; on the other hand, the diversity of the shape of the battery cover 110 can also be increased.
  • the body 111 and the flange 112 may be integrally formed.
  • the material of the battery cover 110 is at least one of glass, plastic, composite plate, and the like.
  • the flange 111 is the middle frame of the electronic device 100.
  • the radius of the fillet between the main body 111 and the flange 112 is 0.5-3 mm. Therefore, the stress concentration between the main body 111 and the flange 112 can be reduced, so that the fatigue strength of the battery cover 110 can be improved.
  • the thickness of the main body 111 may be 0.5-0.8 mm, and the thickness of the flange 112 may be 1.0-1.5 mm.
  • the inner surface of the body 111 has a coating layer or a sprayed layer.
  • the electronic device 100 may be a mobile phone, a tablet computer, a notebook computer, or a wearable device.
  • the battery cover 110 of the electronic device 100 may define a battery compartment for holding components such as batteries or circuit boards.
  • the manufacturing mold 200 may include a first mold 210 and a second mold 220, the first mold 210 has a groove 211, and the second mold 220 has a protrusion 221. It should be noted that the first mold 210 and the second mold 220 may perform a mold clamping operation. When the first mold 210 and the second mold 220 are closed, the protrusion 221 can extend into the groove 211, and the protrusion 221 and the groove 211 define a space for accommodating the glass sheet 300.
  • the porosity of at least one of the first mold 210 and the second mold 220 may be 12%-18%.
  • at least one of the first mold 210 and the second mold 220 is an endothermic mold. It can be understood that at least one of the first mold 210 and the second mold 220 may be made of a heat-absorbing material.
  • the method for manufacturing the battery cover 110 of the electronic device includes the following steps:
  • the glass sheet 300 is placed on the first mold 210, and the glass sheet 300 and the groove 211 define a sealed cavity 201.
  • the second mold 220 is placed on the glass sheet 300, the protrusion 221 faces the groove 211, and the protrusion 221 is in contact with the glass sheet 300. At this time, the glass sheet 300 is sandwiched between the first mold 210 and the second mold 220.
  • the first mold 210, the second mold 220, and the glass sheet 300 are heated. Since the glass sheet 300 has the characteristic of softening when heated, during the heating process, the glass sheet 300 gradually deforms and fits toward the inner wall surface of the groove 211. Since the protrusion 221 of the second mold 220 abuts on the glass sheet 300, The second mold 220 can accelerate the deformation of the glass sheet 300.
  • the sealed cavity 201 is evacuated. As the air pressure in the sealed cavity 201 decreases, the glass sheet 300 is further deformed, and the protrusion 221 gradually moves into the groove 211 .
  • the glass sheet 300 is deformed to a predetermined shape.
  • the protrusion 221 and the groove 211 define a space for receiving the glass sheet 300
  • the outer surface of the protrusion 221 is attached to one side surface of the glass sheet 300
  • the inner surface of the groove 211 is connected to the other side surface of the glass sheet 300. fit. In this way, the glass sheet 300 can be processed to form the battery cover 110.
  • the glass has the characteristics of being softened by heat, and the glass sheet 300 can be processed into a predetermined shape by using the process of heating and vacuuming, thereby simplifying the battery cover
  • the 110 process improves the yield rate, which in turn reduces the production cycle and saves production costs.
  • the manufacturing method of the battery cover 110 of the electronic device includes the following steps:
  • the first step select a glass sheet 300, the thickness of the glass sheet 300 may be 1.0-1.5 mm, and the softening point temperature of the glass sheet 300 may be 700°C-850°C.
  • Step 2 As shown in FIG. 2, cover the glass sheet 300 on the first mold 210, and the glass sheet 300 and the groove 211 define a sealed cavity 201.
  • the third step as shown in FIGS. 2 and 4, the second mold 220 is placed on the glass sheet 300, the protrusion 221 faces the groove 211, and the protrusion 221 is in contact with the glass sheet 300. At this time, the glass sheet 300 is sandwiched between the first mold 210 and the second mold 220.
  • the fourth step as shown in Figure 3, the first mold 210, the second mold 220, and the glass sheet 300 are heated, and the heating temperature is 800°C-850°C. Since the glass sheet 300 has the characteristic of softening when heated, during the heating process, the glass sheet 300 gradually deforms and fits toward the inner wall surface of the groove 211. Since the protrusion 221 of the second mold 220 abuts on the glass sheet 300, The second mold 220 can accelerate the deformation of the glass sheet 300. In order to facilitate assembly operations and improve heating efficiency, the first mold 210, the second mold 220, and the glass sheet 300 are moved 3-4 stations as a whole.
  • the first mold 210 or the second mold 220 is heated by a non-contact heating method.
  • the "non-contact heating method” here can be understood as the heat source does not directly contact the glass sheet 300, which is also called heat absorption molding, that is, the first mold 210 or the second mold 220 is heated by heat absorption and is heated by heat.
  • the transfer method transfers heat to the glass sheet 300 or the corresponding second mold 220 or the first mold 210. For example, when the first mold 210 is heated by a non-contact heating method, the heat is transferred to the glass sheet 300 and the second mold 220 through the first mold 210.
  • the stamping Since the outer surface of the glass is formed by suction and pressure, the stamping is concentrated on the outer surface of the product. After forming, the roughness of the inner surface of the glass is between 0.1-1um. The inner surface only needs to be polished lightly to obtain the mirror effect, which solves the existing problem. In the hot press forming technology, there is a problem of stamping on the inner corner of the glass bend. Moreover, the glass is pre-processed into the required shape first, and only the surface of the glass needs to be CNC processed, which can reduce the processing time, and the glass is not fragile, and the knives on the glass surface are also easy to remove.
  • Step 5 As shown in Fig. 3, in order to further accelerate the deformation of the glass sheet 300, the sealed cavity 201 is evacuated, the evacuation time is 60-90s, and the vacuum degree is 0.1-1 ⁇ 10 -8 MPa. As the air pressure in the sealed cavity 201 decreases, the glass sheet 300 is further deformed, and the protrusion 221 gradually moves into the groove 211. In order to facilitate assembly operations and improve heating efficiency, the first mold 210, the second mold 220, and the glass sheet 300 are moved 2-3 stations as a whole.
  • Step 6 As shown in FIG. 3, the glass sheet 300 is deformed to a predetermined shape. At this time, the protrusion 221 and the groove 211 define a space for accommodating the glass sheet 300, the outer surface of the protrusion 221 is attached to one side surface of the glass sheet 300, and the inner surface of the groove 211 is connected to the other side surface of the glass sheet 300. fit. In this way, the glass sheet 300 can be processed to form the battery cover 110.
  • the seventh step cooling the first mold 210, the second mold 220 and the glass sheet 300.
  • the first mold 210, the second mold 220, and the glass sheet 300 as a whole may go through a slow cooling stage first, and then a rapid cooling stage.
  • the overall structure constructed by the first mold 210, the second mold 220, and the glass sheet 300 has a cooling rate of V 1 (that is, the value of the temperature drop per unit time) in the rapid cooling stage, and the first mold
  • the cooling rate of the overall structure constructed by 210, the second mold 220 and the glass sheet 300 in the slow cooling stage is V 2 (that is, the value of the temperature drop per unit time), where V 1 > V 2 .
  • the first mold 210, the second mold 220 and the glass sheet 300 move 1-2 stations as a whole.
  • the deformed glass sheet is taken out of the mold. Since no pressure is applied to the second mold 220 during the molding process, the mold print caused by the pressing of the first mold 210 and the second mold 220 during the molding process will be lighter. This solves the problem that the high temperature of the glass during the hot pressing process will cause serious mold prints that are difficult to polish and remove.
  • Step 8 Grind, polish and chemically strengthen the glass sheet 300.
  • Step 9 Coating the glass sheet 300.
  • Step 10 Print graphic information on the glass sheet 300.
  • the eleventh step spray ink on the glass sheet 300. At this time, the glass sheet 300 is processed to form the battery cover 110.
  • the texture 301 can be processed on the glass sheet 300 by using a mold.
  • the outer surface of the protrusion 221 and the inner wall surface of the groove 211 have a texture 301.
  • the glass sheet 300 is attached to the outer surface of the protrusion 221 and the inner wall surface of the groove 211. Texture 301 is formed on the surface. Since the glass sheet 300 is in a heated state at this time, it has a certain fluidity, and the texture 301 on the protrusions 221 and the grooves 211 can be printed on the surface of the glass sheet 300.
  • the texture 301 can be formed, so that not only the process steps of processing the texture 301 can be omitted, but also the damage to the glass sheet 300 in the process of turning the texture 301 can be avoided, and the processing can be improved. Efficiency and yield rate.
  • the texture 301 can be trimmed, so that the appearance of the texture 301 can be improved. Further, when the texture 301 is trimmed, the thickness of the removed glass is greater than the depth of the texture 301 by 0.01-0.02 mm. As shown in FIG. 6, the texture 301 on the glass sheet 300 has not been trimmed at this time. As shown in FIG. 7, the texture 301 on the glass sheet 300 has been trimmed at this time.
  • the electronic device 100 includes a battery cover 110.
  • the battery cover 110 can be manufactured according to the manufacturing method described above.
  • the glass has the characteristics of being softened by heat, and the glass sheet 300 can be processed into a predetermined shape by the process of heating and vacuuming, thereby simplifying the process of the battery cover 110 and improving the quality of the battery cover 110. Therefore, the production cycle of the electronic device 100 can be reduced, and the production cost of the electronic device 100 can be saved.
  • the electronic device 100 may be a mobile phone, a tablet computer, a notebook computer, or a wearable device.
  • the battery cover 110 of the electronic device may define a battery compartment for holding components such as batteries or circuit boards.
  • the manufacturing mold 200 may include a first mold 210 and a second mold 220, the first mold 210 has a groove 211, and the second mold 220 has a protrusion 221. It should be noted that the first mold 210 and the second mold 220 can perform a mold clamping operation. When the first mold 210 and the second mold 220 are closed, the protrusion 221 may extend into the groove 211, and the protrusion 221 The groove 211 defines a space for accommodating the glass sheet 300.
  • the porosity of at least one of the first mold 210 and the second mold 220 may be 12%-18%.
  • at least one of the first mold 210 and the second mold 220 is an endothermic mold. It can be understood that at least one of the first mold 210 and the second mold 220 may be made of a heat-absorbing material.
  • the manufacturing method of the battery cover 110 of the electronic device includes the following steps:
  • the glass sheet 300 is placed on the first mold 210, and the glass sheet 300 and the groove 211 define a sealed cavity 201.
  • the second mold 220 is placed on the glass sheet 300, the protrusion 221 faces the groove 211, and the protrusion 221 is in contact with the glass sheet 300. At this time, the glass sheet 300 is sandwiched between the first mold 210 and the second mold 220.
  • the first mold 210, the second mold 220, and the glass sheet 300 are heated. Since the glass sheet 300 has the characteristic of softening when heated, during the heating process, the glass sheet 300 gradually deforms and fits toward the inner wall surface of the groove 211. Since the protrusion 221 of the second mold 220 abuts on the glass sheet 300, The second mold 220 can accelerate the deformation of the glass sheet 300.
  • the sealed cavity 201 is evacuated. As the air pressure in the sealed cavity 201 decreases, the glass sheet 300 is further deformed, and the protrusion 221 gradually moves into the groove 211 .
  • the glass sheet 300 is deformed to a predetermined shape.
  • the glass sheet 300 includes a body 111 and a flange 112, and the flange 112 is connected to the body 111 to define a battery compartment. At this time, the battery or circuit board can be accommodated in the battery compartment.
  • the protrusion 221 and the groove 211 define a space for accommodating the glass sheet 300.
  • the outer surface of the protrusion 221 is attached to one side surface of the glass sheet 300, and the groove 211 The inner surface is attached to the other side surface of the glass sheet 300.
  • the first mold 210, the second mold 220, and the glass sheet 300 are cooled.
  • the main body 111 is processed so that the thickness of the main body 111 is smaller than the thickness of the flange 112.
  • the battery cover 110 thus obtained has different thicknesses, so as to meet the use requirements of electronic devices.
  • the glass has the characteristics of being softened by heat, and the glass sheet 300 can be processed into a predetermined shape by the process of heating and vacuuming, and then the subsequent processing can make
  • the battery cover 110 has different thicknesses, which not only simplifies the process of the battery cover 110, but also enables it to meet different usage requirements, thereby improving the yield rate, reducing the production cycle, and saving production costs.
  • the method for manufacturing the battery cover 110 of the electronic device includes the following steps:
  • the first step select a glass sheet 300, the thickness of the glass sheet 300 may be 1.0-1.5 mm, and the softening point temperature of the glass sheet 300 may be 700°C-850°C.
  • Step 2 As shown in FIG. 2, cover the glass sheet 300 on the first mold 210, and the glass sheet 300 and the groove 211 define a sealed cavity 201.
  • the third step as shown in FIGS. 2 and 4, the second mold 220 is placed on the glass sheet 300, the protrusion 221 faces the groove 211, and the protrusion 221 is in contact with the glass sheet 300. At this time, the glass sheet 300 is sandwiched between the first mold 210 and the second mold 220.
  • the fourth step as shown in Figure 3, the first mold 210, the second mold 220, and the glass sheet 300 are heated, and the heating temperature is 800°C-850°C. Since the glass sheet 300 has the characteristic of softening when heated, during the heating process, the glass sheet 300 gradually deforms and fits toward the inner wall surface of the groove 211. Since the protrusion 221 of the second mold 220 abuts on the glass sheet 300, The second mold 220 can accelerate the deformation of the glass sheet 300. In order to facilitate assembly operations and improve heating efficiency, the first mold 210, the second mold 220, and the glass sheet 300 are moved 3-4 stations as a whole.
  • the first mold 210 or the second mold 220 is heated by a non-contact heating method.
  • the “non-contact heating method” here can be understood to mean that the heat source does not directly contact the glass sheet 300, that is, the first mold 210 or the second mold 220 is heated by heat absorption, and the heat is transferred to the glass sheet by heat transfer.
  • the glass sheet 300 or the corresponding second mold 220 or the first mold 210 can be understood to mean that the heat source does not directly contact the glass sheet 300, that is, the first mold 210 or the second mold 220 is heated by heat absorption, and the heat is transferred to the glass sheet by heat transfer.
  • the heat is transferred to the glass sheet 300 and the second mold 220 through the first mold 210; when the second mold 220 is heated by the non-contact heating method, the heat It is transferred to the glass sheet 300 and the first mold 210 through the second mold 220.
  • the stamping Since the outer surface of the glass is formed by suction and pressure, the stamping is concentrated on the outer surface of the product. After forming, the roughness of the inner surface of the glass is between 0.1-1um. The inner surface only needs to be polished lightly to obtain the mirror effect, which solves the existing problem. In the hot press forming technology, there is a problem of stamping on the inner corner of the glass bend. Moreover, the glass is pre-processed into the required shape first, and only the surface of the glass needs to be CNC processed, which can reduce the processing time, and the glass is not fragile, and the knives on the glass surface are also easy to remove.
  • Step 5 As shown in Fig. 3, in order to further accelerate the deformation of the glass sheet 300, the sealed cavity 201 is evacuated, the evacuation time is 60-90s, and the vacuum degree is 0.1-1 ⁇ 10 -8 MPa. As the air pressure in the sealed cavity 201 decreases, the glass sheet 300 is further deformed, and the protrusion 221 gradually moves into the groove 211. In order to facilitate assembly operations and improve heating efficiency, the first mold 210, the second mold 220, and the glass sheet 300 are moved 2-3 stations as a whole.
  • Step 6 As shown in FIG. 3, the glass sheet 300 is deformed to a predetermined shape.
  • the glass sheet 300 includes a body 111 and a flange 112, and the flange 112 is connected to the body 111 to define a battery compartment. At this time, the battery or circuit board can be contained in the battery compartment.
  • the protrusion 221 and the groove 211 define a space for accommodating the glass sheet 300.
  • the outer surface of the protrusion 221 is attached to one side surface of the glass sheet 300, and the groove 211
  • the inner surface is attached to the other side surface of the glass sheet 300.
  • a rounded corner 113 is formed between the main body 111 and the flange 112.
  • the fillet radius is 0.5-3mm.
  • the hot pressing When the temperature is low, the fluidity of the glass is insufficient, and the hot pressing only partially pressurizes the glass, and the glass is difficult to completely conform to the shape of the mold. Therefore, it is difficult for the hot pressing to form a curved surface with a fillet less than 3mm.
  • the fillet radius can be reduced.
  • the seventh step cooling the first mold 210, the second mold 220 and the glass sheet 300.
  • the first mold 210, the second mold 220, and the glass sheet 300 as a whole may go through a slow cooling stage first, and then a rapid cooling stage.
  • the overall structure constructed by the first mold 210, the second mold 220, and the glass sheet 300 has a cooling rate of V 1 (that is, the value of the temperature drop per unit time) in the rapid cooling stage, and the first mold
  • the cooling rate of the overall structure constructed by 210, the second mold 220 and the glass sheet 300 in the slow cooling stage is V 2 (that is, the value of the temperature drop per unit time), where V 1 > V 2 .
  • the first mold 210, the second mold 220 and the glass sheet 300 move 1-2 stations as a whole.
  • the deformed glass sheet is taken out of the mold. Since no pressure is applied to the second mold 220 during the molding process, the mold print caused by the pressing of the first mold 210 and the second mold 220 during the molding process will be lighter. This solves the problem that the high temperature of the glass during the hot pressing process will cause serious mold prints that are difficult to polish and remove.
  • Step 8 Process the main body 111 so that the thickness of the main body 111 is smaller than the thickness of the flange 112, and the thickness of the main body 111 can be 0.5-0.8 mm.
  • Step 9 Grind, polish and chemically strengthen the glass sheet 300.
  • Step 10 Coating the glass sheet 300.
  • Step 11 Print graphic information on the glass sheet 300.
  • the twelfth step spray ink on the glass sheet 300.
  • the glass sheet 300 is processed to form the battery cover 110.
  • the battery cover 110 thus obtained has different thicknesses, so as to meet the usage requirements of the electronic device 100.
  • the texture 301 can be processed on the glass sheet 300 by using a mold.
  • the inner wall surface of the protrusion 221 and the groove 211 has a texture 301.
  • the surface of the glass sheet 300 that is attached to the outer surface of the protrusion 221 and the inner wall surface of the groove 211 forms a texture. 301. Since the glass sheet 300 is in a heated state at this time, it has a certain fluidity, and the texture 301 on the protrusions 221 and the grooves 211 can be printed on the surface of the glass sheet 300.
  • the texture 301 can be formed, so that not only the process steps of processing the texture 301 can be omitted, but also the damage to the glass sheet 300 in the process of turning the texture 301 can be avoided, and the processing can be improved. Efficiency and yield rate.
  • the texture 301 can be trimmed, so that the appearance of the texture 301 can be improved. Further, when the texture 301 is trimmed, the thickness of the removed glass is greater than the depth of the texture 301 by 0.01-0.02 mm. As shown in FIG. 6, the texture 301 on the glass sheet 300 has not been trimmed at this time. As shown in FIG. 7, the texture 301 on the glass sheet 300 has been trimmed at this time.
  • the electronic device 100 includes a battery cover 110.
  • the battery cover 110 can be manufactured according to the manufacturing method described above.
  • the glass has the characteristics of being softened by heat, and the glass sheet 300 can be processed into a predetermined shape by the process of heating and vacuuming, thereby simplifying the process of the battery cover 110 and improving the quality of the battery cover 110. Therefore, the production cycle of the electronic device 100 can be reduced, and the production cost of the electronic device 100 can be saved.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

La présente invention concerne un dispositif électronique (100), un couvercle de batterie (110), et son procédé de fabrication. Le procédé de fabrication comprend les étapes consistant : à recouvrir un premier moule (210) en utilisant une feuille en verre (300), la feuille en verre (300) et une rainure (211) définissant une cavité étanche (201) ; à recouvrir la feuille en verre (300) en utilisant un second moule (220), une protubérance (221) faisant face à la rainure (211), et la protubérance (221) effectuant un contact avec la feuille en verre (300) ; à chauffer le premier moule (210), le second moule (220) et la feuille en verre (300) ; à mettre sous vide la cavité étanche (201), la feuille en verre (300) se déformant lorsque la pression d'air à l'intérieur de la cavité étanche (201) baisse, et la protubérance (221) se déplaçant progressivement dans la rainure (211) ; et la feuille en verre (300) se déformant en une forme prédéterminée.
PCT/CN2020/107928 2019-09-03 2020-08-07 Dispositif électronique, couvercle de batterie, et son procédé de fabrication WO2021042939A1 (fr)

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