CN112448072A - Electronic device, battery cover, and method of manufacturing the same - Google Patents
Electronic device, battery cover, and method of manufacturing the same Download PDFInfo
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- CN112448072A CN112448072A CN201910829327.2A CN201910829327A CN112448072A CN 112448072 A CN112448072 A CN 112448072A CN 201910829327 A CN201910829327 A CN 201910829327A CN 112448072 A CN112448072 A CN 112448072A
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- glass sheet
- battery cover
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 71
- 239000011521 glass Substances 0.000 claims abstract description 224
- 238000000034 method Methods 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims description 16
- 238000010583 slow cooling Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims 2
- 239000011324 bead Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract 2
- 238000012545 processing Methods 0.000 description 15
- 238000000465 moulding Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000005498 polishing Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
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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
The application discloses an electronic device, a battery cover and a manufacturing method thereof. The manufacturing mold includes a first mold having a groove and a second mold having a protrusion. The manufacturing method comprises the following steps: covering the glass sheet on the first mold, wherein the glass sheet and the groove define a sealed cavity; covering the second mold on the glass sheet, wherein the bulge faces to the groove and is in contact with the glass sheet; heating the first mold, the second mold and the glass sheet; vacuumizing the sealing cavity, wherein the glass sheet deforms along with the reduction of the air pressure in the sealing cavity, and the bulge gradually moves into the groove; the glass sheet is deformed to a predetermined shape. According to the manufacturing method of the battery cover of the electronic equipment, the glass sheet can be processed into the preset shape by using the heating and vacuumizing process, so that the process of the battery cover can be simplified, the yield is improved, the production period is shortened, and the production cost is saved.
Description
Technical Field
The present disclosure relates to the field of electronic device manufacturing technologies, and in particular, to an electronic device, a battery cover, and a manufacturing method thereof.
Background
With the continuous development of science and technology, the mobile phones are updated more and more quickly, and consumers tend to pursue more creative, fresher and more attractive mobile phone products with higher appearance expressive force. The shell of most mobile phones sold in the market at present is a sandwich structure formed by combining a glass battery cover, an aluminum alloy middle frame and a screen glass cover plate. There is seam between the aluminum alloy center and the glass battery cover, which affects the user's grip and destroys the integral feeling of the whole mobile phone case. At present, glass shells limited by various technologies in the market and having stable and reliable mass production are generally manufactured into curved surface shapes with the curved surfaces connected with the planes in a hot-press forming mode, and have homogenization tendency.
When the glass is softened at a high temperature, the concave-convex state of the surface of the mold, namely mold marks, can be transcribed when the mold is extruded, the polishing is difficult to remove when the mold marks are serious, and the roughness of the inner surface of the glass is 1-10um, so the forming temperature of the existing hot press forming technology is generally limited below the softening point temperature of the glass. Due to the structure of the integrated glass, the height of the glass and the blocking of the middle frame, the polishing brush is difficult to contact the inner round corner where the middle frame is connected with the battery cover during polishing.
In addition, in the related art, the CNC processing is also performed on the glass to form the glass into a desired shape, and the scheme has the following disadvantages: 1. the processing time is long, the required CNC processing time is 3-5 hours, and the cost is high; 2. the glass is fragile in the processing process, and the glass is easy to be broken due to the existence of microcracks in the processing process in the glass double-sided CNC processing process; 3. the CNC machining lines on the concave surface are difficult to remove, the polishing time is 2-3 hours, and the polishing time is too long, so that other defects such as edge collapse and the like can be caused.
Content of application
The application provides an electronic device, a battery cover and a manufacturing method thereof.
According to the manufacturing method of the battery cover of the electronic device of the embodiment of the present application, in the manufacturing method, the manufacturing mold includes the first mold having the groove and the second mold having the protrusion,
the manufacturing method comprises the following steps:
selecting a glass sheet;
placing the glass sheet in the first mold, the glass sheet and the groove defining a sealed cavity;
covering the second mold on the glass sheet, wherein the bulge faces the groove and is in contact with the glass sheet;
heating the first mold, the second mold, the glass sheet;
and vacuumizing the sealed cavity to deform the glass sheet to a preset shape.
According to the manufacturing method of the battery cover of the electronic equipment, the glass is heated and softened, and the glass sheet can be processed into the preset shape by using the heating and vacuumizing process, so that the process of the battery cover can be simplified, the yield is improved, the production period can be shortened, and the production cost is saved.
An electronic device according to an embodiment of the present application includes a battery cover manufactured according to the method of manufacturing a battery cover of an electronic device as described above.
According to the electronic equipment of this application embodiment, utilize glass to have the characteristic of being heated and softened, through the technological method that utilizes heating, evacuation, can process into predetermined shape with the glass piece, can simplify the technology of battery cover from this, promote the yields, and then can reduce production cycle, practice thrift manufacturing cost.
The battery cover is used for electronic equipment and comprises a body and a flange, wherein the body is connected with the flange and limits a battery compartment, and the inner wall surface of the battery compartment is provided with textures.
According to the battery cover of the embodiment of the application, the battery cover is designed into a structure comprising the body and the flanging, and the inner wall surface of the battery bin is provided with the textures, so that on one hand, the technical process of the battery cover can be simplified, and the production cycle of the battery cover is shortened; on the other hand, the shape diversity of the battery cover can be increased.
In some embodiments, the body and the cuff are integrally formed.
In some embodiments, the fillet radius between the body and the flange is 0.5-3 mm.
In some embodiments, the thickness of the body is 0.5-0.8mm, and the thickness of the flange is 1.0-1.5 mm.
In some embodiments, the inner surface of the body has a coating or sprayed coating.
In some embodiments, the flange is a middle frame of the electronic device.
In some embodiments, the battery cover is made of at least one of glass, plastic, composite board, and the like.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a manufacturing tool in which a glass sheet is undeformed according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a manufacturing mold in which a glass sheet has been deformed according to an embodiment of the present application;
FIG. 4 is an exploded view of a manufacturing mold in which a glass sheet has been deformed according to an embodiment of the present application;
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 schematic partial structural view of a glass sheet of an electronic device according to an embodiment of the present application, wherein the texture of the glass sheet is not finished;
FIG. 7 is a schematic partial structural view of a glass sheet of an electronic device according to an embodiment of the present application, wherein the texture of the glass sheet has been modified;
fig. 8 is a flowchart of a method of manufacturing a battery cover according to an embodiment of the present application;
fig. 9 is a flowchart of a method of manufacturing a battery cover according to an embodiment of the present application;
fig. 10 is a flowchart of a method of manufacturing a battery cover according to an embodiment of the present application.
Reference numerals:
the electronic device 100 is provided with a display device,
a battery cover 110, a body 111, a flange 112, a round corner 113,
the manufacturing tool 200, the sealed cavity 201,
the first mold 210, the groove 211, the second mold 220, the protrusion 221,
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
The battery cover 110 according to an embodiment of the present application is described in detail below with reference to fig. 5. It should be noted that the battery cover 110 may be used in the electronic device 100, and the electronic device 100 may be a mobile phone, a tablet computer, a notebook computer, or a wearable device. Specifically, the battery cover 110 of the electronic device 100 may define a battery compartment for housing a battery or a circuit board or the like.
As shown in fig. 5, the battery cover 110 according to the embodiment of the present application, which may be used for the electronic device 100, may include a body 111 and a flange 112, the body 111 being connected with the flange 112 and defining a battery compartment, an inner wall surface of the battery compartment having a texture.
According to the battery cover 110 of the embodiment of the application, the battery cover 110 is designed to be of a structure comprising the body 111 and the flanging 112, and the inner wall surface of the battery compartment is provided with the texture, so that on one hand, the process of the battery cover 110 can be simplified, and the production cycle of the battery cover 110 can be shortened; on the other hand, the variety of the outer shape of the battery cover 110 can be increased.
In order to simplify the process of the battery cover 110, the body 111 and the burring 112 may be integrally formed. The battery cover 110 is made of at least one material selected from glass, plastic, and composite plate. The flange 111 is a middle frame of the electronic device 100.
As shown in fig. 5, the radius of the rounded corner between the body 111 and the flange 112 is 0.5-3 mm. Stress concentration between the body 111 and the burring 112 can be reduced, and fatigue resistance of the battery cover 110 can be improved. Further, the thickness of the body 111 may be 0.5-0.8mm, and the thickness of the flange 112 may be 1.0-1.5 mm. In order to further improve the structural strength of the battery cover 110, the inner surface of the body 111 has a coating layer or a spray coating layer.
A method for manufacturing a battery cover of 100110 electronic apparatus and the electronic apparatus according to an embodiment of the present application are described below with reference to fig. 1 to 9. It should be noted that 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 housing a battery or circuit board or the like.
In manufacturing the cell cover 110, the manufacturing mold 200 may include a first mold 210 and a second mold 220, the first mold 210 having a groove 211, and the second mold 220 having a protrusion 221. It should be noted that the first mold 210 and the second mold 220 can perform a mold closing 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.
At least one of the first mold 210 and the second mold 220 may have a porosity of 12% to 18%. In order to facilitate the heat absorption of the first mold 210 and the second mold 220, at least one of the first mold 210 and the second mold 220 is a heat absorbing mold. It is understood that at least one of the first mold 210 and the second mold 220 may be made of a heat absorbing material.
As shown in fig. 8, in order to describe the steps of the manufacturing method of the battery cover 110, serial numbers are edited for each step, and it should be noted that the serial numbers do not limit the order in the manufacturing method. The method for manufacturing the battery cover 110 of the electronic device according to the embodiment of the present application includes the steps of:
a glass sheet 300 is selected.
As shown in fig. 2, the glass sheet 300 is placed over the first mold 210, and the glass sheet 300 and the groove 211 define a sealed cavity 201.
As shown in fig. 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 contacts the glass sheet 300. At this time, the glass sheet 300 is sandwiched between the first mold 210 and the second mold 220.
As shown in fig. 3, the first mold 210, the second mold 220, and the glass sheet 300 are heated. Because the glass sheet 300 is heated and has a softening characteristic, in the heating process, the glass sheet 300 is gradually deformed and attached to the inner wall surface of the groove 211, and the second mold 220 can accelerate the deformation of the glass sheet 300 because the protrusion 221 of the second mold 220 is stopped on the glass sheet 300.
As shown in fig. 3, to further accelerate the deformation of the glass sheet 300, the sealed chamber 201 is evacuated, and as the pressure in the sealed chamber 201 decreases, the glass sheet 300 further deforms and the protrusion 221 gradually moves into the recess 211.
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 attached to the other side surface of the glass sheet 300. The glass sheet 300 can thus be processed to form the cell cover 110.
According to the manufacturing method of the battery cover 110 of the electronic device, the glass has the characteristic of being softened by heating, and the glass sheet 300 can be processed into the preset shape by using the heating and vacuumizing process, so that the process of the battery cover 110 can be simplified, the yield can be improved, the production period can be shortened, and the production cost can be saved.
As shown in fig. 9, a method of manufacturing a battery cover 110 of an electronic device according to an embodiment of the present application includes the steps of:
the first step is as follows: the glass sheet 300 is selected, the thickness of the glass sheet 300 can be 1.0-1.5mm, and the softening point temperature of the glass sheet 300 can be 700 ℃ -850 ℃.
The second step is that: as shown in fig. 2, the glass sheet 300 is placed over the first mold 210, and the glass sheet 300 and the groove 211 define a sealed cavity 201.
The third step: as shown in fig. 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 contacts 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 fig. 3, the first mold 210, the second mold 220, and the glass sheet 300 are heated to a temperature of 800 ℃ to 850 ℃. Because the glass sheet 300 is heated and has a softening characteristic, in the heating process, the glass sheet 300 is gradually deformed and attached to the inner wall surface of the groove 211, and the second mold 220 can accelerate the deformation of the glass sheet 300 because the protrusion 221 of the second mold 220 is stopped on the glass sheet 300. To facilitate line production and to improve heating efficiency, the first mold 210, the second mold 220, and the glass sheet 300 are moved integrally by 3 to 4 stations.
When the first mold 210, the second mold 220, and the glass sheet 300 are heated, the first mold 210 or the second mold 220 is heated by a non-contact heating method. The term "non-contact heating means" is understood herein to mean that the heat source does not come into direct contact with the glass sheet 300, and is also referred to as heat-absorption molding, that is, the first mold 210 or the second mold 220 heats by absorbing heat and transfers the heat to the glass sheet 300 or the corresponding second mold 220 or the first mold 210 by heat transfer. For example, when the first mold 210 is heated by non-contact heating, heat is transferred to the glass sheet 300 and the second mold 220 through the first mold 210.
Because the outer surface of the glass is subjected to suction pressure forming, the mold is concentrated on the outer surface of the product, the roughness of the inner surface of the formed glass is between 0.1 and 1um, and the inner surface can obtain the mirror surface effect only by lightly polishing, thereby solving the problem that the mold exists at the inner angle of the bent part of the glass in the existing hot press forming technology. And glass is preprocessed into a required shape, and only the surface of the glass needs to be subjected to CNC (computer numerical control) processing, so that the processing time can be reduced, the glass is not easy to break, and the knife lines on the surface of the glass are easy to remove.
The fifth step: as shown in FIG. 3, to further accelerate the deformation of the glass sheet 300, the sealed chamber 201 is evacuated for 60-90s under a vacuum of 0.1-1X 10-8MPa. As the gas pressure in the sealed chamber 201 decreases, the glass sheet 300 is further deformed and the protrusion 221 gradually moves into the groove 211. In order to facilitate the line production and improve the heating efficiency, the first mold 210 and the second moldThe mold 220 and glass sheet 300 move integrally through 2-3 stations.
And a sixth step: 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 attached to the other side surface of the glass sheet 300. The glass sheet 300 can thus be processed to form the cell cover 110.
The seventh step: the first mold 210, the second mold 220, and the glass sheet 300 are cooled. Upon cooling, the first mold 210, the second mold 220, and the entirety of the glass sheet 300 may be subjected to a slow cooling stage followed by a fast cooling stage. In cooling, the cooling rate of the overall structure formed by the first mold 210, the second mold 220, and the glass sheet 300 in the rapid cooling stage is V1(i.e., the value of the temperature drop per unit time), the cooling rate of the entire structure formed by the first mold 210, the second mold 220, and the glass sheet 300 is V during the slow cooling stage2(i.e., the value of the temperature drop per unit time), where V1＞V2。
Further, during the rapid cooling stage, the first mold 210, the second mold 220, and the glass sheet 300 move integrally 1-2 stations. The deformed glass sheet is taken out of the mold, and since no pressure is applied to the second mold 220 in the molding process, the mold impression caused by the pressing of the first mold 210 and the second mold 220 in the molding process is lighter. Therefore, the problem that severe mold prints are difficult to polish and remove due to overhigh glass temperature in the hot press molding process is solved.
Eighth step: the glass sheet 300 is ground, polished, and chemically strengthened.
The ninth step: glass sheet 300 is coated.
The tenth step: the glass sheet 300 is printed with graphic information.
The eleventh step: the glass sheet 300 is ink-jetted. At this time, the glass sheet 300 is processed to form the cell cover 110.
In addition, in order to meet the texture 301 requirement of the battery cover 110, the texture 301 may be processed on the glass sheet 300 by using a mold. For example, the outer surface of the protrusion 221 and the inner wall surface of the groove 211 have a texture 301, and when the sealed cavity 201 is vacuumized, the texture 301 is formed on the surface of the glass sheet 300, which is attached to the outer surface of the protrusion 221 and the inner wall surface of the groove 211. Since the glass sheet 300 is in a heated state at this time and has a certain fluidity, the texture 301 on the protrusions 221 and the grooves 211 can be printed on the surface of the glass sheet 300. Therefore, the texture 301 can be formed while the glass sheet 300 is subjected to heating forming, so that the process step of processing the texture 301 can be omitted, the damage to the glass sheet 300 in the process of turning the texture 301 can be avoided, and the processing efficiency and the yield can be improved.
In order to improve the effect of the texture 301, after the first mold 210, the second mold 220 and the glass sheet 300 are cooled, the texture 301 may be trimmed, thereby improving the appearance of the texture 301. Further, when the texture 301 is trimmed, the thickness of the removed glass is 0.01-0.02mm greater than the depth of the texture 301. As shown in fig. 6, the texture 301 on the glass sheet 300 has not been finished at this point, and as shown in fig. 7, the texture 301 on the glass sheet 300 has been finished at this point.
The electronic device 100 according to the embodiment of the present application includes a battery cover 110. The cell cover 110 may be manufactured according to the manufacturing method as described above.
According to the electronic device 100 of the embodiment of the application, the glass has the characteristic of being softened by heating, and the glass sheet 300 can be processed into the preset shape by using the heating and vacuumizing process, so that the process of the battery cover 110 can be simplified, the yield can be improved, the production period of the electronic device 100 can be shortened, and the production cost of the electronic device 100 can be saved.
A method of manufacturing a battery cover 110 of an electronic device and the electronic device 100 according to an embodiment of the present application are described below with reference to fig. 1 to 10. It should be noted that 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 housing a battery or circuit board or the like.
In manufacturing the cell cover 110, the manufacturing mold 200 may include a first mold 210 and a second mold 220, the first mold 210 having a groove 211, and the second mold 220 having a protrusion 221. It should be noted that the first mold 210 and the second mold 220 can be clamped, when the first mold 210 and the second mold 220 are clamped, 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.
At least one of the first mold 210 and the second mold 220 may have a porosity of 12% to 18%. In order to facilitate the heat absorption of the first mold 210 and the second mold 220, at least one of the first mold 210 and the second mold 220 is a heat absorbing mold. It is understood that at least one of the first mold 210 and the second mold 220 may be made of a heat absorbing material.
As shown in fig. 9, a method of manufacturing a battery cover 110 of an electronic device according to an embodiment of the present application includes the steps of:
a glass sheet 300 is selected.
As shown in fig. 2, the glass sheet 300 is placed over the first mold 210, and the glass sheet 300 and the groove 211 define a sealed cavity 201.
As shown in fig. 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 contacts the glass sheet 300. At this time, the glass sheet 300 is sandwiched between the first mold 210 and the second mold 220.
As shown in fig. 3, the first mold 210, the second mold 220, and the glass sheet 300 are heated. Because the glass sheet 300 is heated and has a softening characteristic, in the heating process, the glass sheet 300 is gradually deformed and attached to the inner wall surface of the groove 211, and the second mold 220 can accelerate the deformation of the glass sheet 300 because the protrusion 221 of the second mold 220 is stopped on the glass sheet 300.
As shown in fig. 3, to further accelerate the deformation of the glass sheet 300, the sealed chamber 201 is evacuated, and as the pressure in the sealed chamber 201 decreases, the glass sheet 300 further deforms and the protrusion 221 gradually moves into the recess 211.
As shown in fig. 3, the glass sheet 300 is deformed into a predetermined shape, and the glass sheet 300 includes a body 111 and a flange 112, and the flange 112 is coupled to the body 111 to define a battery compartment. At this time, a battery or a 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 inner surface of the groove 211 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 body 111 is processed such that the thickness of the body 111 is smaller than the thickness of the burring 112. The battery cover 110 thus obtained has different thicknesses, so that the use requirements of the electronic device can be satisfied.
According to the manufacturing method of the battery cover 110 of the electronic equipment, the glass is heated and softened, the glass sheet 300 can be processed into the preset shape by the heating and vacuumizing process, and the battery cover 110 can have different thicknesses by subsequent processing, so that the process of the battery cover 110 can be simplified, different use requirements can be met, the yield can be improved, the production period can be shortened, and the production cost can be saved.
As shown in fig. 10, in order to describe the steps of the manufacturing method of the battery cover 110, serial numbers are edited for each step, and it should be noted that the serial numbers do not limit the order in the manufacturing method. The method for manufacturing the battery cover 110 of the electronic device according to the embodiment of the present application includes the steps of:
the first step is as follows: the glass sheet 300 is selected, the thickness of the glass sheet 300 can be 1.0-1.5mm, and the softening point temperature of the glass sheet 300 can be 700 ℃ -850 ℃.
The second step is that: as shown in fig. 2, the glass sheet 300 is placed over the first mold 210, and the glass sheet 300 and the groove 211 define a sealed cavity 201.
The third step: as shown in fig. 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 contacts 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 fig. 3, the first mold 210, the second mold 220, and the glass sheet 300 are heated to a temperature of 800 ℃ to 850 ℃. Because the glass sheet 300 is heated and has a softening characteristic, in the heating process, the glass sheet 300 is gradually deformed and attached to the inner wall surface of the groove 211, and the second mold 220 can accelerate the deformation of the glass sheet 300 because the protrusion 221 of the second mold 220 is stopped on the glass sheet 300. To facilitate line production and to improve heating efficiency, the first mold 210, the second mold 220, and the glass sheet 300 are moved integrally by 3 to 4 stations.
When the first mold 210, the second mold 220, and the glass sheet 300 are heated, the first mold 210 or the second mold 220 is heated by a non-contact heating method. By "non-contact heating" is herein understood that the heat source does not come into direct contact with the glass sheet 300, i.e. the first mold 210 or the second mold 220 heats by heat absorption and transfers heat to the glass sheet 300 or the corresponding second mold 220 or the first mold 210 by heat transfer. For example, when the first mold 210 is heated by non-contact heating, heat is transferred to the glass sheet 300, the second mold 220 through the first mold 210; when the second mold 220 is heated by non-contact heating, heat is transferred to the glass sheet 300 and the first mold 210 through the second mold 220.
Because the outer surface of the glass is subjected to suction pressure forming, the mold is concentrated on the outer surface of the product, the roughness of the inner surface of the formed glass is between 0.1 and 1um, and the inner surface can obtain the mirror surface effect only by lightly polishing, thereby solving the problem that the mold exists at the inner angle of the bent part of the glass in the existing hot press forming technology. And glass is preprocessed into a required shape, and only the surface of the glass needs to be subjected to CNC (computer numerical control) processing, so that the processing time can be reduced, the glass is not easy to break, and the knife lines on the surface of the glass are easy to remove.
The fifth step: as shown in FIG. 3, to further accelerate the deformation of the glass sheet 300, the sealed chamber 201 is evacuated for 60-90s under a vacuum of 0.1-1X 10-8MPa. As the gas pressure in the sealed chamber 201 decreases, the glass sheet 300 is further deformed and the protrusion 221 gradually moves into the groove 211. In order to facilitate the line production and improve the heating efficiency, the first mold 210 and the second moldThe two molds 220 and the glass sheet 300 move integrally for 2-3 stations.
And a sixth step: as shown in fig. 3, the glass sheet 300 is deformed into a predetermined shape, and the glass sheet 300 includes a body 111 and a flange 112, and the flange 112 is coupled to the body 111 to define a battery compartment. At this time, a battery or a 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 inner surface of the groove 211 is attached to the other side surface of the glass sheet 300. The glass sheet 300 can thus be processed to form the cell cover 110. In order to improve the appearance of the battery cover 110, a round corner 113 is formed between the body 111 and the flange 112. The radius of the round corner is 0.5-3 mm.
When the temperature is low, the fluidity of the glass is insufficient, and the hot press molding only partially pressurizes the glass, so that the glass is difficult to completely conform to the shape of a mold, and the hot press molding is difficult to mold a curved surface with a round angle smaller than 3 mm. By using a heat sink to shape the glass sheet, the fillet radius can be reduced.
The seventh step: the first mold 210, the second mold 220, and the glass sheet 300 are cooled. Upon cooling, the first mold 210, the second mold 220, and the entirety of the glass sheet 300 may be subjected to a slow cooling stage followed by a fast cooling stage. In cooling, the cooling rate of the overall structure formed by the first mold 210, the second mold 220, and the glass sheet 300 in the rapid cooling stage is V1(i.e., the value of the temperature drop per unit time), the cooling rate of the entire structure formed by the first mold 210, the second mold 220, and the glass sheet 300 is V during the slow cooling stage2(i.e., the value of the temperature drop per unit time), where V1＞V2。
Further, during the rapid cooling stage, the first mold 210, the second mold 220, and the glass sheet 300 move integrally 1-2 stations. The deformed glass sheet is taken out of the mold, and since no pressure is applied to the second mold 220 in the molding process, the mold impression caused by the pressing of the first mold 210 and the second mold 220 in the molding process is lighter. Therefore, the problem that severe mold prints are difficult to polish and remove due to overhigh glass temperature in the hot press molding process is solved.
Eighth step: the body 111 is processed so that the thickness of the body 111 is smaller than that of the flange 112, and the thickness of the body 111 may be 0.5-0.8 mm.
The ninth step: the glass sheet 300 is ground, polished, and chemically strengthened.
The tenth step: glass sheet 300 is coated.
The eleventh step: the glass sheet 300 is printed with graphic information.
The twelfth step: the glass sheet 300 is ink-jetted. At this time, the glass sheet 300 is processed to form the cell cover 110. The resulting battery cover 110 thus has different thicknesses, which may satisfy the use requirements of the electronic device 100.
In addition, in order to meet the texture 301 requirement of the battery cover 110, the texture 301 may be processed on the glass sheet 300 by using a mold. For example, the inner wall surfaces of the protrusion 221 and the groove 211 are provided with textures 301, and when the sealed cavity 201 is vacuumized, the textures 301 are formed on the surfaces, which are attached to the outer surface of the protrusion 221 and the inner wall surface of the groove 211, of the glass sheet 300. Since the glass sheet 300 is in a heated state at this time and has a certain fluidity, the texture 301 on the protrusions 221 and the grooves 211 can be printed on the surface of the glass sheet 300. Therefore, the texture 301 can be formed while the glass sheet 300 is subjected to heating forming, so that the process step of processing the texture 301 can be omitted, the damage to the glass sheet 300 in the process of turning the texture 301 can be avoided, and the processing efficiency and the yield can be improved.
In order to improve the effect of the texture 301, after the first mold 210, the second mold 220 and the glass sheet 300 are cooled, the texture 301 may be trimmed, thereby improving the appearance of the texture 301. Further, when the texture 301 is trimmed, the thickness of the removed glass is 0.01-0.02mm greater than the depth of the texture 301. As shown in fig. 6, the texture 301 on the glass sheet 300 has not been finished at this point, and as shown in fig. 7, the texture 301 on the glass sheet 300 has been finished at this point.
The electronic device 100 according to the embodiment of the present application includes a battery cover 110. The cell cover 110 may be manufactured according to the manufacturing method as described above.
According to the electronic device 100 of the embodiment of the application, the glass has the characteristic of being softened by heating, and the glass sheet 300 can be processed into the preset shape by using the heating and vacuumizing process, so that the process of the battery cover 110 can be simplified, the yield can be improved, the production period of the electronic device 100 can be shortened, and the production cost of the electronic device 100 can be saved.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (17)
1. A method of manufacturing a battery cover for an electronic device, characterized in that, in the manufacturing method, a manufacturing mold includes a first mold having a groove and a second mold having a protrusion,
the manufacturing method comprises the following steps:
selecting a glass sheet;
placing the glass sheet in the first mold, the glass sheet and the groove defining a sealed cavity;
covering the second mold on the glass sheet, wherein the bulge faces the groove and is in contact with the glass sheet;
heating the first mold, the second mold, the glass sheet;
and vacuumizing the sealed cavity to deform the glass sheet to a preset shape.
2. The method for manufacturing a battery cover of an electronic device according to claim 1, wherein a heating temperature is 800 ℃ to 850 ℃ when the first mold, the second mold, and the glass sheet are heated.
3. The method for manufacturing a battery cover of an electronic device according to claim 1, wherein a vacuum time is 60 to 90 seconds when the sealed chamber is evacuated.
4. The method for manufacturing a battery cover of an electronic device according to claim 1, wherein a degree of vacuum is 0.1 to 1 x 10 when the sealed chamber is evacuated-8MPa。
5. The method of manufacturing a battery cover for an electronic device according to claim 1, wherein at least one of the first mold and the second mold is a heat absorbing mold.
6. The method of claim 1, wherein the first mold, the second mold, and the glass sheet are cooled after the glass sheet is deformed to a predetermined shape, and the first mold, the second mold, and the glass sheet are cooled through a slow cooling stage and then a fast cooling stage.
7. The method of manufacturing a battery cover for an electronic device according to claim 6, wherein the projection and the groove inner wall surface have textures,
when the sealed cavity is vacuumized, the surfaces, attached to the outer surface of the bulge and the inner wall surface of the groove, of the glass sheet form textures;
and after cooling the first mold, the second mold and the glass sheet, trimming the texture, wherein the thickness of the removed glass is 0.01-0.02mm greater than the depth of the texture when trimming the texture.
8. The method of claim 6, wherein the first mold, the second mold, and the glass sheet are cooled, and then the glass sheet is ground, polished, chemically strengthened, coated, printed with graphics information, and ink-sprayed.
9. The method of claim 1, wherein the first mold or the second mold is heated by a non-contact heating method when the first mold, the second mold, and the glass sheet are heated.
10. An electronic device comprising a battery cover manufactured by the method of manufacturing a battery cover for an electronic device according to any one of claims 1 to 9.
11. The battery cover is used for electronic equipment and is characterized by comprising a body and a flange, wherein the body is connected with the flange and limits a battery compartment, and the inner wall surface of the battery compartment is provided with textures.
12. The battery cover of claim 11, wherein the body and the flange are integrally formed.
13. The battery cover of claim 12, wherein the radius of the fillet between the body and the bead is 0.5-3 mm.
14. The battery cover of claim 12, wherein the thickness of the body is 0.5-0.8mm and the thickness of the flange is 1.0-1.5 mm.
15. The battery cover of claim 12, wherein the inner surface of the body has a coating or spray coating.
16. The battery cover of claim 12, wherein the flange is a center frame of the electronic device.
17. The battery cover of claims 11-16, wherein the material of the battery cover is at least one of glass, plastic, composite plate, and the like.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829327.2A CN112448072A (en) | 2019-09-03 | 2019-09-03 | Electronic device, battery cover, and method of manufacturing the same |
| PCT/CN2020/107928 WO2021042939A1 (en) | 2019-09-03 | 2020-08-07 | Electronic device, battery cover, and fabrication method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829327.2A CN112448072A (en) | 2019-09-03 | 2019-09-03 | Electronic device, battery cover, and method of manufacturing the same |
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| CN112448072A true CN112448072A (en) | 2021-03-05 |
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| CN201910829327.2A Pending CN112448072A (en) | 2019-09-03 | 2019-09-03 | Electronic device, battery cover, and method of manufacturing the same |
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