Battery cover and electronic equipment

Abstract

The utility model provides a battery cover and electronic equipment, relates to the technical field of electronic equipment, and is used for solving the problems that an existing double-spliced battery cover is easy to deform and low in yield. The battery cover provided by the utility model comprises a bottom plate, a first cover plate, a second cover plate, a mylar and a first adhesive layer, wherein the surface of the bottom plate comprises a first area and a second area, the second area comprises a first sub-area and a second sub-area, and the first sub-area is arranged around the second sub-area by a circle. The first cover plate is fixed on the first area, and the second cover plate is arranged on the second area. And the second sub-region is bonded and fixed with the second cover plate through the first adhesive layer. The Mylar film is arranged between the second cover plate and the first sub-area, one side surface of the Mylar film is bonded and fixed with the second cover plate, and the other side surface of the Mylar film is bonded and fixed with the first sub-area. According to the application, the shrinkage stress generated when the adhesive is cured is released by utilizing the deformation of the mylar, so that the risk of deformation of the battery cover can be reduced.

Description

[0001] This application claims the priority of the Chinese patent application filed with the State Intellectual Property Office on November 21, 2023, with application number 202323167314.4 and invention name “A double-piece battery cover and electronic device”, all contents of which are incorporated by reference in this application. Technical Field

[0002] The embodiments of the present application relate to the technical field of electronic devices, and in particular to a battery cover and an electronic device. Background Art

[0003] With the development of electronic devices (such as mobile phones, tablet computers, etc.), the appearance and structure of battery covers of electronic devices are becoming more and more diversified. The battery covers of mid-to-high-end electronic devices generally begin to adopt a double-piece design (that is, the panel of the battery cover is made of two different materials, which has a better appearance and touch feel).

[0004] In order to ensure structural strength and impact resistance, existing double-piece battery covers are generally made of multi-layer structures. When there are many bonding layers, the battery cover is prone to deformation, resulting in a low yield rate. Utility Model Content

[0005] The embodiments of the present application provide a battery cover and an electronic device, which are used to solve the problems of easy deformation and low yield of existing double-piece battery covers.

[0006] In order to achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0007] In a first aspect, an embodiment of the present application provides a battery cover, which includes a bottom plate, a first cover plate, a second cover plate, a Mylar sheet and a first adhesive layer.

[0008] The surface of the bottom plate includes a first area and a second area, the second area includes a first sub-area and a second sub-area, and the first sub-area is arranged around the second sub-area. The first cover plate is fixed on the first area, and the second cover plate is arranged on the second area. The second sub-area is bonded and fixed to the second cover plate through a first adhesive layer. The Mylar sheet is arranged between the second cover plate and the first sub-area, one side surface of the Mylar sheet is bonded and fixed to the second cover plate, and the other side surface of the Mylar sheet is bonded and fixed to the first sub-area.

[0009] The battery cover provided in the first aspect of the present application, on the one hand, is provided with a Mylar sheet between the second cover plate and the first sub-region on the bottom plate, and the two side surfaces of the Mylar sheet are respectively bonded and fixed to the second cover plate and the first sub-region. For example, one side surface of the Mylar sheet is an adhesive surface, and the adhesive surface of the Mylar sheet is bonded and fixed to the second cover plate, and the other side surface of the Mylar sheet is bonded and fixed to the bottom plate by an adhesive. When the adhesive is cured, a part of the shrinkage stress generated by the adhesive will be dispersed to the Mylar sheet, and then the deformation of the Mylar sheet is used to release this part of the shrinkage stress, thereby reducing the risk of deformation of the battery cover due to excessive shrinkage stress during curing of the adhesive.

[0010] On the other hand, when manufacturing the battery cover, the first adhesive layer is used to pre-bond the second cover plate and the bottom plate, which can not only prevent the second cover plate from slipping and dislocating relative to the bottom plate. Moreover, when the second cover plate and the bottom plate are subsequently pressed together, the first adhesive layer can also control the distance between the second cover plate and the bottom plate (that is, the distance between the second cover plate and the bottom plate is equal to the thickness of the first adhesive layer), thereby preventing the distance between the second cover plate and the bottom plate from being too small, resulting in the adhesive overflowing between the other side surface of the Mylar sheet and the first sub-area on the bottom plate.

[0011] In combination with the first aspect, in a possible implementation, the second region further includes a third sub-region, the third sub-region extends along an edge of the second region, and the third sub-region is bonded and fixed to the second cover plate by a second adhesive layer.

[0012] In this way, when manufacturing the battery cover, the second cover plate and the bottom plate are pre-bonded using the second adhesive layer and the first adhesive layer, which can further prevent the second cover plate from slipping and dislocating relative to the first cover plate. In addition, the third sub-region extends along the edge of the second region, that is, the third sub-region is annular. Correspondingly, the second adhesive layer in the third sub-region is also annular and extends along the edge of the second cover plate, so that the second adhesive layer can support the edge of the second cover plate, and then when the second cover plate and the bottom plate are pressed together, the edge position of the second cover plate can be prevented from collapsing.

[0013] In combination with the first aspect, in another possible implementation, a plurality of second sub-regions are provided, and the plurality of second sub-regions are distributed at intervals, and each second sub-region is bonded and fixed to the second cover plate by a first adhesive layer.

[0014] In this way, a first adhesive layer is correspondingly arranged in each second sub-region, so that when the battery cover is manufactured, the second cover plate and the bottom plate are pre-bonded by using multiple first adhesive layers, which can further prevent the second cover plate from slipping and dislocating relative to the first cover plate. In addition, multiple first adhesive layers distributed at intervals can evenly support the second cover plate, and then when the second cover plate and the bottom plate are pressed together, the second cover plate can be prevented from partially collapsing.

[0015] In combination with the first aspect, in another possible implementation, a mounting hole is provided on the battery cover, and the mounting hole penetrates the second cover plate, the Mylar sheet, and the bottom plate along the thickness direction of the battery cover. This arrangement facilitates mounting the decorative cover of the camera in the electronic device in the mounting hole.

[0016] In combination with the first aspect, in another possible implementation, the second region further includes a fourth sub-region, the fourth sub-region extends around the mounting hole, and the fourth sub-region is bonded and fixed to the second cover plate by a third adhesive layer.

[0017] In this way, when manufacturing the battery cover, the second cover plate and the bottom plate are pre-bonded using the third adhesive layer and the first adhesive layer, which can further prevent the second cover plate from slipping and misaligning relative to the first cover plate. In addition, the fourth sub-region extends around the mounting hole, that is, the fourth sub-region is annular. Correspondingly, the third adhesive layer in the fourth sub-region is also annular and extends around the mounting hole, so that the third adhesive layer can support the edge position of the mounting hole on the second cover plate, and then when the second cover plate and the bottom plate are pressed together, the edge position of the mounting hole on the second cover plate can be prevented from collapsing.

[0018] In combination with the first aspect, in another possible implementation, the bottom plate includes a plate body and a raised portion, the raised portion is disposed on a surface of the plate body, and the raised portion separates the surface of the plate body into a first area and a second area. In this configuration, the raised portion can be used to completely separate the first cover plate and the second cover plate, thereby preventing the first cover plate and the second cover plate from interfering with each other.

[0019] In combination with the first aspect, in another possible implementation manner, the protrusion extends from one side edge of the board body to another side edge of the board body along the length direction of the battery cover.

[0020] In combination with the first aspect, in another possible implementation, the second cover plate includes a transparent cover plate and a decorative film layer, one side surface of the decorative film layer is fixedly connected to the transparent cover plate, and the other side surface of the decorative film layer is bonded and fixed to the Mylar sheet and the first adhesive layer. With this arrangement, the user can observe the various colors, textures and patterns on the surface of one side of the decorative film layer through the transparent cover plate, thereby enhancing the design sense and aesthetics of the battery cover. In addition, when the adhesive between the other side surface of the Mylar sheet and the first sub-region is cured, a part of the shrinkage stress generated by the above-mentioned adhesive will be dispersed to the Mylar sheet (using the deformation of the Mylar sheet to release this part of the shrinkage stress), and will not be directly transmitted to the decorative film layer to cause deformation of the decorative film layer, thereby causing poor light and shadow (for example, distortion of the pattern or texture on the decorative film layer).

[0021] In combination with the first aspect, in another possible implementation, the transparent cover is made of glass, so as to improve the touch feel of the battery cover.

[0022] In combination with the first aspect, in another possible implementation, a plurality of first regions and a plurality of first cover plates are provided, and the plurality of first regions and the plurality of first cover plates are provided in one-to-one correspondence. In this way, a plurality of first cover plates can be used to splice a variety of patterns, and when the materials of the plurality of first cover plates are different, the battery cover can have a variety of touches and looks, which can enhance the user experience.

[0023] In combination with the first aspect, in another possible implementation, a plurality of second regions and a plurality of second cover plates are provided, and the plurality of second regions and the plurality of second cover plates are provided in one-to-one correspondence. In this way, a plurality of second cover plates can be used to splice a variety of patterns, and when the materials of the plurality of second cover plates are different, the battery cover can have a variety of touches and looks, which can enhance the user experience.

[0024] In combination with the first aspect, in another possible implementation manner, the battery cover further includes a fourth adhesive layer, and the first sub-region is bonded and fixed to the Mylar sheet through the fourth adhesive layer.

[0025] In this way, the fourth adhesive layer is not directly bonded to the second cover plate, but is bonded to the Mylar sheet on the surface of the second cover plate, which is equivalent to using the Mylar sheet to separate the fourth adhesive layer from the second cover plate. When the fourth adhesive layer solidifies, the shrinkage stress generated by it will act on the Mylar sheet. The deformation of the Mylar sheet is used to release part of the shrinkage stress of the fourth adhesive layer, thereby avoiding the shrinkage stress of the fourth adhesive layer directly acting on the second cover plate and causing deformation of the second cover plate.

[0026] In combination with the first aspect, in another possible implementation manner, the fourth adhesive layer is hot melt adhesive.

[0027] In combination with the first aspect, in another possible implementation, the first adhesive layer is a foam double-sided adhesive.

[0028] In combination with the first aspect, in another possible implementation, the first cover plate is made of PU leather, thereby improving the touch feel of the battery cover.

[0029] In combination with the first aspect, in another possible implementation, the base plate is made of glass fiber, which has high mechanical strength and heat resistance, as well as good insulation performance, and is more suitable for the environmental conditions where the base plate is located.

[0030] In a second aspect, the present application provides an electronic device, which includes a frame, a battery, and the battery cover provided in the first aspect.

[0031] The battery cover is fixed on the frame, the frame and the battery cover are surrounded to form a receiving cavity, and the battery is arranged in the receiving cavity. It can be understood that the beneficial effects that can be achieved by the electronic device described in the second aspect and any possible implementation thereof provided above can refer to the beneficial effects in the first aspect and any possible implementation thereof, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the overall structure of an electronic device provided in an embodiment of the present application;

[0033] Figure 2 for Figure 1 Structural explosion diagram of electronic equipment;

[0034] Figure 3 It is a schematic diagram of the explosion structure of a double-piece battery cover in the related art;

[0035] Figure 4 A schematic diagram of an exploded structure of a battery cover provided in an embodiment of the present application;

[0036] Figure 5 for Figure 4 Front view of the midsole plate;

[0037] Figure 6 for Figure 4 A partial enlarged view of point B in the middle;

[0038] Figure 7 for Figure 4 A schematic diagram of the distribution of the first area and the second area on the midsole plate;

[0039] Figure 8 for Figure 4 A schematic diagram of the first adhesive layer being bonded to the second sub-region;

[0040] Fig. 9 A schematic diagram of the distribution of the first area and the second area on another bottom plate provided in an embodiment of the present application;

[0041] Fig.10 A schematic diagram of an exploded structure of another battery cover provided in an embodiment of the present application;

[0042] Fig.11 for Fig.10 A schematic diagram of the distribution of the first sub-area, the second sub-area and the third sub-area on the midsole plate;

[0043] Fig.12 for Fig.10 A schematic diagram of the first adhesive layer and the second adhesive layer being distributed and bonded to the second sub-region and the third sub-region;

[0044] Fig.13A schematic diagram of an exploded structure of another battery cover provided in an embodiment of the present application;

[0045] Fig.14 for Fig.13 A schematic diagram of the distribution of the first sub-area, the second sub-area, the third sub-area and the fourth sub-area on the midsole plate;

[0046] Fig.15 for Fig.13 A schematic diagram of the first adhesive layer, the second adhesive layer and the third adhesive layer being distributed and bonded to the second sub-region, the third sub-region and the fourth sub-region;

[0047] Fig.16 A schematic diagram of an exploded structure of another battery cover provided in an embodiment of the present application;

[0048] Fig.17 for Fig.16 Front view of the middle battery cover;

[0049] Fig.18 for Fig.17 Schematic diagram of the cross section at AA in the middle.

[0050] Reference numerals:

[0051] 01. Electronic device; 10. Display module; 11. Translucent cover; 12. Display screen; 20. Housing; 21. Battery cover; 22. Frame; 23. Middle plate; 30. Camera module; 40. Main board; 50. Camera decorative cover; 60. Battery; 70. Related technology Double-piece battery cover; 71. Substrate; 72. Adhesive; 73. Spliced ​​panel; 731. First panel; 732. Second panel; 80. Battery cover; 81. Bottom plate; 811. Board body; 8111 , first surface; 812, raised portion; 810, first area; 820, second area; 820a, first sub-area; 820b, second sub-area; 820c, third sub-area; 820d, fourth sub-area; 82, first cover plate; 83, second cover plate; 831, transparent cover plate; 832, decorative film layer; 84, Mylar sheet; 85, first adhesive layer; 86, second adhesive layer; 87, third adhesive layer; 88, fourth adhesive layer; 89, fifth adhesive layer; 800, mounting hole. DETAILED DESCRIPTION

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

[0053] In the description of the present application, it should be clarified that the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application, and do not mean that the devices or elements referred to must have a specific direction or position, and therefore cannot be understood as limiting the present application. The "quantity" mentioned above cannot be understood as limiting the present application.

[0054] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] The embodiment of the present application provides an electronic device. Specifically, the electronic device may be a portable electronic device or other types of electronic devices. For example, the electronic device may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a monitor, a camera, a personal computer, a notebook computer, a wearable device, etc. For the convenience of explanation, the following examples are all taken as an example of the electronic device being a mobile phone.

[0056] See also Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the overall structure of the electronic device 01 provided in the embodiment of the present application. Figure 2 For the above Figure 1 Exploded diagram of the structure of the electronic device 01. As can be seen from the above, in this embodiment, the electronic device 01 is a mobile phone, and the electronic device 01 can be in an approximately rectangular plate-shaped structure. The electronic device 01 can include a display module 10, a housing 20, a camera module 30, a mainboard 40, a camera decorative cover 50 and a battery 60.

[0057] Understandably, Figure 1 and Figure 2 Only some components of the electronic device 01 are schematically shown, and the actual shapes, sizes, positions and structures of these components are not subject to the present invention. Figure 1 and Figure 2 restrictions.

[0058] The above-mentioned display module 10 is used to display images, videos, etc. The display module 10 may include a light-transmitting cover plate 11 and a display screen 12 (English name: panel, also called display panel), and the light-transmitting cover plate 11 and the display screen 12 are stacked. The material of the light-transmitting cover plate 11 includes but is not limited to glass. For example, the light-transmitting cover plate 11 can adopt an ordinary light-transmitting cover plate to protect the display screen to avoid damage to the display screen due to external force, and it can play a dust-proof role. Alternatively, the light-transmitting cover plate 11 can also adopt a light-transmitting cover plate with a touch function, so that the electronic device 01 has a touch function, which makes it more convenient for users to use. Therefore, the present application does not specifically limit the specific material of the light-transmitting cover plate 11.

[0059] In addition, the display screen 12 may be a flexible display screen or a rigid display screen. For example, the display screen 12 may be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light-emitting diode (QLED) display screen, or a liquid crystal display (LCD).

[0060] The housing 20 is used to protect the electronic components inside the electronic device 01. The housing 20 may include a battery cover 21 and a frame 22. The battery cover 21 is located on the side of the display screen 12 away from the light-transmitting cover plate 11, and is stacked with the light-transmitting cover plate 11 and the display screen 12. The frame 22 is located between the light-transmitting cover plate 11 and the battery cover 21. The battery cover 21 is fixed to the frame 22. For example, the battery cover 21 may be fixed to the frame 22 by bonding, threading, welding, snapping, etc. The light-transmitting cover plate 11 may be fixed to the frame 22 by gluing, so that the light-transmitting cover plate 11, the battery cover 21, and the frame 22 form a receiving cavity inside the electronic device 01. The display screen 12, the main board 40, and the camera module 30 are all arranged in the internal receiving space.

[0061] The motherboard 40 is used to set the electronic components of the electronic device 10 and realize the electrical connection between the electronic components. The battery 60 is electrically connected to the motherboard 40 and is used to provide power to the electronic components. Exemplarily, the electronic components can be a control chip (such as a system on chip, System on Chip, SOC), a graphics control chip (graphics processing unit, GPU), a universal flash storage (universal flash storage, UFS), an earpiece, a flash module, and the above-mentioned linear motor 60, etc.

[0062] In some embodiments, the housing 20 may further include a middle plate 23, which is disposed in the accommodating cavity and is located on the side of the display screen 12 away from the light-transmitting cover plate 11. The middle plate 23 is fixedly connected to the frame 22 to form the middle frame of the electronic device 10. For example, the middle plate 23 and the frame 22 may be fixedly connected by gluing, threading, welding, snapping, etc.; or, the middle plate 23 and the frame 22 may also be an integrally formed structure, that is, the middle plate 23 and the frame 22 form a structural component as a whole. The middle plate 23 divides the accommodating cavity into two independent spaces, one of which is located between the light-transmitting cover plate 11 and the middle plate 23, and the display screen 12 is located in the space. The other space is located between the middle plate 23 and the battery cover 21, and the main board 40, the camera module 30 and the battery 60 are all arranged in the space.

[0063] For the convenience of the following description, an XYZ coordinate system is established, where the width direction of the battery cover is the X-axis direction, the length direction of the battery cover is the Y-axis direction, and the thickness direction of the battery cover is the Z-axis direction. Among them, the thickness direction of the battery cover is the thickness direction of the above-mentioned electronic device, the length direction of the battery cover is the length direction of the electronic device, and the width direction of the battery cover is the width direction of the electronic device.

[0064] See also Figure 3 As shown, Figure 3 It is a schematic diagram of the structure explosion of a double-piece battery cover 70 in the related art.

[0065] Specifically, the related technology double-piece battery cover 70 may include a substrate 71, a splicing panel 73 and a backing glue 72, wherein the splicing panel 73 includes a first panel 731 and a second panel 732 of different materials, and the first panel 731 and the second panel 732 are both bonded and fixed to the surface of the substrate 71 by the backing glue 72.

[0066] During manufacturing, the back glue 72 will gradually shrink in volume during the curing process and generate shrinkage stress, most of which will directly act on the splicing panel 73 and the substrate 71, which can easily cause deformation of the double-spliced ​​battery cover 70 in the related art (such as local dents, etc.).

[0067] In order to solve the above problem, an embodiment of the present application provides a battery cover 80 , which can be applied to the above electronic device 01 , that is, the battery cover 80 is fixed on the above frame 22 .

[0068] See also Figure 4 , Figure 5 and Figure 6 As shown, Figure 4 This is a schematic diagram of an exploded structure of a battery cover 80 provided in an embodiment of the present application. Figure 5 for Figure 4 A front view of the midsole plate 81 (parallel to the XY plane), Figure 6 for Figure 4 A partial enlarged view of the B in the middle. The battery cover 80 is provided with a mounting hole 800 penetrating the battery cover 80 along the thickness direction (Z-axis direction) of the battery cover 80 , and the mounting hole 800 is used to mount the camera decorative cover 50 of the electronic device.

[0069] The shape of the mounting hole 800 can be regular or irregular shapes such as circular, elliptical, rectangular, etc., as long as it is compatible with the outer contour of the camera decorative cover 50, which will not be elaborated here.

[0070] The battery cover 80 may include a bottom plate 81 , a first cover plate 82 , a second cover plate 83 , a Mylar sheet 84 and a first adhesive layer 85 .

[0071] The surface of the bottom plate 81 includes a first area 810 and a second area 820. It should be noted that the shapes and sizes of the first area 810 and the second area 820 may be the same or different.

[0072] The material of the bottom plate 81 can be glass fiber, aramid fiber or other materials with high mechanical strength, heat resistance and good insulation performance, and the present application does not make any special limitation on this.

[0073] In some embodiments, the bottom plate 81 may include a plate body 811 and a protrusion 812. The protrusion 812 is disposed on the surface of the plate body 811, and the protrusion 812 divides the surface of the plate body 811 into a first area 810 and a second area 820.

[0074] The raised portion 812 may extend from one side edge of the plate body 811 to the other side edge of the plate body 811 along the length direction of the battery cover 80. Alternatively, the raised portion 812 may extend from one side edge of the plate body 811 to the other side edge of the plate body 811 along the width direction of the battery cover 80. Alternatively, the raised portion 812 may also be annular, and the first area 810 is located inside the raised portion 812, and the second area 820 is located outside the raised portion 812. It is understandable that the raised portion 812 may also extend in other directions, as long as it can separate the surface of the plate body 811 into the first area 810 and the second area 820, and this application does not make any special restrictions on this.

[0075] The present application does not specifically limit the location of the mounting hole 800. For example, the mounting hole 800 may be located on the first area 810 of the bottom plate 81, or on the second area 820 of the bottom plate 81, or the mounting hole 800 spans between the first area 810 and the second area 820 of the bottom plate 81.

[0076] For example, see Figure 4 , Figure 5 and Figure 6 As shown. The board body 811 of the bottom plate 81 is a rectangular plate-like structure, and the board body 811 has a first surface 8111 facing the outside of the electronic device 01 and a second surface (not shown in the figure) facing the inside of the electronic device 01. The raised portion 812 is a long strip structure, and the raised portion 812 is provided on the first surface 8111 of the board body 811, and extends from one side edge of the board body 811 to the other side edge of the board body 811 along the length direction (Y-axis direction) of the battery cover 80. As a result, the first surface 8111 of the board body 811 is divided into a first area 810 and a second area 820 by the raised portion 812, wherein the right side of the raised portion 812 in the illustrated orientation is the first area 810, and the left side of the raised portion 812 in the illustrated orientation is the second area 820, and the first area 810 and the second area 820 have the same shape and area, and the first area 810 and the second area 820 are arranged in a central symmetric manner. The mounting hole 800 is provided on the second area 820, and the mounting hole 800 is elliptical in shape.

[0077] It should be noted that the plate body 811 and the protrusion 812 can be a split structure or can be connected to form an integral structure. When the integral structure is used, the plate body 811 and the protrusion 812 are a whole, and there is no separation between the two. Compared with the split structure, the integral structure is stronger and more secure, and is also easier to assemble.

[0078] On the basis of the above, the first cover plate 82 is fixed on the first area 810. It is understandable that the first cover plate 82 and the bottom plate 81 can be fixed by bonding, clamping, etc. For example, please continue to refer to Figure 4, Figure 5 and Figure 6 As shown, the battery cover 80 further includes a fifth adhesive layer 89 , and the first cover plate 82 is adhesively fixed to the first area 810 of the plate body 811 through the fifth adhesive layer 89 .

[0079] The material of the first cover plate 82 can be PU leather, PE leather or natural leather, etc., and the present application does not make any special limitation on this.

[0080] Further, the second area 820 includes a first sub-area 820a and a second sub-area 820b. The first sub-area 820a is arranged around the second sub-area 820b. It should be noted that the first sub-area 820a is arranged around the second sub-area 820b, that is, the part of the second area 820 except the second sub-area 820b belongs to the first sub-area 820a, which is equivalent to the second sub-area 820b being embedded in the first sub-area 820a, and the second sub-area 820b is surrounded by the first sub-area 820a.

[0081] The Mylar sheet 84 is disposed between the second cover plate 83 and the first sub-region 820a, one side of the Mylar sheet 84 is bonded and fixed to the second cover plate 83, and the other side of the Mylar sheet 84 is bonded and fixed to the first sub-region 820a. The second sub-region 820b is bonded and fixed to the second cover plate 83 via the first adhesive layer 85.

[0082] It is understandable that the Mylar sheet 84 may cover the entire first sub-region 820a or may cover part of the first region 810, and this application does not specifically limit this.

[0083] The first adhesive layer 85 can be a foam double-sided adhesive, such as PE (Polyethylene) foam double-sided adhesive, EVA (Ethylene-Vinyl Acetate copolymer) foam double-sided adhesive, PU (PolyUrethane) foam double-sided adhesive, acrylic foam double-sided adhesive, etc.

[0084] In this way, the two side surfaces of the Mylar sheet 84 are respectively bonded and fixed to the second cover plate 83 and the first sub-region 820a of the base plate 81. For example, one side surface of the Mylar sheet 84 is an adhesive surface, and the adhesive surface of the Mylar sheet 84 is bonded and fixed to the second cover plate 83, and the other side surface of the Mylar sheet 84 is bonded and fixed to the base plate 81 by an adhesive. When the adhesive cures, a part of the shrinkage stress generated by the adhesive will be dispersed to the Mylar sheet 84, and then the deformation of the Mylar sheet 84 will be used to release this part of the shrinkage stress, thereby reducing the risk of deformation of the battery cover 80 due to excessive shrinkage stress during curing of the adhesive.

[0085] It should be noted that the second area 820 and the second cover plate 83 may be provided with one or more. When the second area 820 and the second cover plate 83 are provided with multiple, the multiple second areas 820 and the multiple second cover plates 83 are provided in one-to-one correspondence. Among them, the material and shape of the multiple second cover plates 83 may be the same or different, and this application does not make any special restrictions on this. With this arrangement, multiple second cover plates 83 can be used to splice a variety of patterns, and when the materials of the multiple second cover plates 83 are different, the battery cover 80 can have a variety of touches and looks, which can enhance the user experience.

[0086] Similarly, the first region 810 and the first cover plate 82 may be provided with one or more. When the first region 810 and the first cover plate 82 are provided with multiple, the multiple first regions 810 and the multiple first cover plates 82 are provided in one-to-one correspondence. The materials and shapes of the multiple first cover plates 82 may be the same or different, and this application does not specifically limit this.

[0087] For example, please refer to Figure 4 As shown, one first cover plate 82 and one second cover plate 83 are provided respectively, and one first area 810 and one second area 820 are provided respectively on the plate body 811. The mounting hole 800 is provided on the second area 820, and the mounting hole 800 is elliptical in shape.

[0088] The second sub-region 820b may be provided with one or more, and the present application does not make any special limitation thereto. When the second sub-region 820b is provided with multiple ones, the multiple second sub-regions 820b are spaced apart. The shapes of the multiple second sub-regions 820b may be the same or different. At this time, the first adhesive layer 85 is also provided with multiple ones, so that each second sub-region 820b is bonded and fixed to the second cover plate 83 by a first adhesive layer 85. In this way, the multiple spaced apart first adhesive layers 85 can evenly support the second cover plate 83, and when the second cover plate 83 and the bottom plate 81 are pressed together, the second cover plate 83 can be prevented from partially collapsing.

[0089] The second sub-region 820b may be in a regular or irregular shape such as a circle, a rectangle, a trapezoid, etc., and this application does not impose any special limitation on this.

[0090] In this example, see Figure 7 , Figure 8 As shown, Figure 7 for Figure 4 Schematic diagram of the distribution of the first area 810 and the second area 820 on the midsole plate 81 (parallel to the XY plane). Figure 8 for Figure 4Schematic diagram of the first adhesive layer 85 in the second sub-area 820b being bonded to the second sub-area 820b (parallel to the XY plane). In the figure, the second sub-area 820b is provided with a, which is located below the mounting hole 800. The shape of the second sub-area 820b is a combination of a rectangle and a trapezoid, that is, Figure 7 The blank area surrounded by the dashed line and the remaining shaded area are the first sub-area 820a. Correspondingly, the first adhesive layer 85 is also provided with an outer contour shape (parallel to the XY plane) of the first adhesive layer 85 that matches the outer contour shape (parallel to the XY plane) of the second sub-area 820b.

[0091] In other embodiments, see Fig. 9 As shown, Fig. 9 A schematic diagram of the distribution of the first sub-area 820a and the second sub-area 820b on the bottom plate 81 of another battery cover 80 provided in an embodiment of the present application (parallel to the XY plane). There are two second sub-areas 820b, both located below the mounting hole 800. Both second sub-areas 820b are rectangular, i.e. Fig. 9 The blank area surrounded by the dotted line and the remaining shaded area are the first sub-area 820a.

[0092] Please return to see Figure 4 As shown. The second cover plate 83 may include a transparent cover plate 831 and a decorative film layer 832. One side surface of the decorative film layer 832 is fixedly connected to the transparent cover plate 831. For example, the decorative film layer 832 may be bonded to a transparent panel, or the decorative film layer 832 may be directly formed on the transparent cover plate 831 by spraying, electroplating, evaporation, etc. With this arrangement, the user can observe various colors, textures, and patterns on one side surface of the decorative film layer 832 through the transparent cover plate 831, thereby enhancing the design sense and aesthetics of the battery cover 80. The material of the transparent cover plate 831 may be glass, crystal, plastic, etc., and this application does not specifically limit this.

[0093] The Mylar sheet 84 is located between the other side surface of the decorative film layer 832 and the first sub-region 820 a on the board body 811 . The Mylar sheet 84 and the first adhesive layer 85 are bonded and fixed to the other side surface of the decorative film layer 832 .

[0094] In this way, by arranging the Mylar sheet 84 between the decorative film layer 832 on the second cover plate 83 and the first sub-region 820a on the plate body 811, the two side surfaces of the Mylar sheet 84 are respectively bonded and fixed to the decorative film layer 832 and the first sub-region 820a. For example, one side surface of the Mylar sheet 84 is an adhesive surface, and the adhesive surface of the Mylar sheet 84 is bonded and fixed to the decorative film layer 832, and the other side surface of the Mylar sheet 84 is bonded and fixed to the first sub-region 820a on the base plate 81 through an adhesive. When the adhesive is cured, a part of the shrinkage stress generated by the adhesive will be dispersed to the Mylar sheet 84 (using the deformation of the Mylar sheet 84 to release this part of the shrinkage stress), and will not be directly transmitted to the decorative film layer 832 to cause deformation of the decorative film layer 832, thereby reducing the risk of poor light and shadow on the second cover plate 83 (for example, distortion and deformation of the pattern or texture on the decorative film layer 832).

[0095] In addition, when manufacturing the battery cover 80, the first adhesive layer 85 is first used to pre-bond the side of the second cover plate 83 provided with the decorative film layer 832 to the plate body 811, which can not only prevent the second cover plate 83 from slipping and dislocating relative to the plate body 811. Moreover, when the second cover plate 83 and the plate body 811 are subsequently pressed together, the first adhesive layer 85 can also control the distance between the second cover plate 83 and the plate body 811 (that is, the distance between the second cover plate 83 and the plate body 811 is equal to the thickness of the first adhesive layer 85), thereby preventing the distance between the second cover plate 83 and the plate body 811 from being too small, resulting in the adhesive between the other side surface of the Mylar sheet 84 and the plate body 811 overflowing from the first sub-region 820a.

[0096] In some embodiments, the second region 820 further includes a third sub-region 820 c , and the third sub-region 820 c extends along the edge of the second region 820 , and the third sub-region 820 c is bonded and fixed to the second cover plate 83 via a second adhesive layer 86 .

[0097] See for example Fig.10 , Fig.11 and Fig.12 As shown, Fig.10 This is a schematic diagram of an exploded structure of another battery cover 80 provided in an embodiment of the present application. Fig.11 for Fig.10 Schematic diagram of the distribution of the first sub-area 820a, the second sub-area 820b and the third sub-area 820c on the midsole plate 81 (parallel to the XY plane). Fig.12 for Fig.10 Schematic diagram of the first adhesive layer 85 and the second adhesive layer 86 being distributed and bonded on the second sub-region 820b and the third sub-region 820c (parallel to the XY plane).

[0098] visible, Fig.10 The battery cover 80 is equivalent to the battery cover 80 in the aforementioned Figure 4 On the basis of the battery cover 80, a third sub-area 820c is divided on the second area 820 of the plate body 811, and a second adhesive layer 86 is added between the second cover plate 83 and the plate body 811. Among them, the third sub-area 820c is annular and extends along the edge of the second area 820. The second adhesive layer 86 is also annular and is located in the third sub-area 820c. The outer contour shape (parallel to the XY plane) of the third sub-area 820c and the second adhesive layer 86 is consistent with the outer contour shape (parallel to the XY plane) of the second area 820. The part of the second area 820 other than the second sub-area 820b and the third sub-area 820c belongs to the first sub-area 820a (i.e. Fig.11 middle shaded area).

[0099] In this way, when manufacturing the battery cover 80, the second cover plate 83 and the plate body 811 are pre-bonded by using the second adhesive layer 86 and the first adhesive layer 85, which can further prevent the second cover plate 83 from slipping and dislocating relative to the plate body 811. In addition, the second adhesive layer 86 in the third sub-region 820c can support the edge of the second cover plate 83, and then when the second cover plate 83 and the plate body 811 are pressed together, the edge of the second cover plate 83 can be prevented from collapsing.

[0100] In some embodiments, the second region 820 further includes a fourth sub-region 820 d , which extends around the mounting hole 800 , and the fourth sub-region 820 d is bonded and fixed to the second cover plate 83 via a third adhesive layer 87 .

[0101] For example, see Fig.13 , Fig.14 and Fig.15 As shown, Fig.13 This is a schematic diagram of an exploded structure of another battery cover 80 provided in an embodiment of the present application. Fig.14 for Fig.13 Schematic diagram of the distribution of the first sub-region 820a, the second sub-region 820b, the third sub-region 820c and the fourth sub-region 820d on the midsole plate 81 (parallel to the XY plane). Fig.15 for Fig.13 Schematic diagram (parallel to the XY plane) of the first adhesive layer 85, the second adhesive layer 86 and the third adhesive layer 87 being distributed and bonded on the second sub-region 820b, the third sub-region 820c and the fourth sub-region 820d.

[0102] visible, Fig.13 The battery cover 80 is equivalent to the battery cover 80 in the aforementioned Fig.10On the basis of the middle battery cover 80, a fourth sub-area 820d is divided on the second area 820 of the board body 811, and a third adhesive layer 87 is added between the second cover plate 83 and the board body 811. The mounting hole 800 passes through the glass panel, the decorative film layer 832, the Mylar sheet 84 and the board body 811 in sequence along the thickness direction (Z-axis direction) of the battery cover 80. The fourth sub-area 820d and the third adhesive layer 87 are both annular, the fourth sub-area 820d bypasses the outside of the mounting hole 800, and the third adhesive layer 87 is located in the fourth area. The outer contour shape (parallel to the XY plane) of the fourth sub-area 820d and the third adhesive layer 87 are consistent with the outer contour shape (parallel to the XY plane) of the mounting hole 800. The second area 820 except the second sub-area 820b, the third sub-area 820c and the fourth sub-area 820d all belong to the first sub-area 820a (i.e., the shaded part in the figure).

[0103] In this way, when manufacturing the battery cover 80, the third adhesive layer 87, the second adhesive layer 86 and the first adhesive layer 85 can be used to pre-bond the side of the second cover plate 83 provided with the decorative film layer 832 to the plate body 811, which can further prevent the second cover plate 83 from slipping and dislocating relative to the plate body 811. In addition, the third adhesive layer 87 in the fourth sub-region 820d can support the edge position of the mounting hole 800 on the second cover plate 83, and when the second cover plate 83 and the plate body 811 are pressed together, the edge position of the mounting hole 800 on the second cover plate 83 can be prevented from collapsing.

[0104] Furthermore, the battery cover 80 further includes a fourth adhesive layer 88 , wherein one side surface of the Mylar sheet 84 is bonded and fixed to the decorative film layer 832 on the second cover plate 83 , and the other side surface of the Mylar sheet 84 is bonded and fixed to the first sub-region 820 a on the bottom plate 81 through the fourth adhesive layer 88 .

[0105] For example, see Fig.16 , Fig.17 and Fig.18 shown. Fig.16 This is a schematic diagram of an exploded structure of another battery cover 80 provided in an embodiment of the present application. Fig.17 for Fig.16 A front view of the battery cover 80 (parallel to the XY plane). Fig.18 for Fig.17 Schematic diagram of the cross section at AA in the middle.

[0106] One side surface of the Mylar sheet 84 is an adhesive surface, and the adhesive surface of the Mylar sheet 84 is bonded and fixed to the second cover plate 83 , and the other side surface of the Mylar sheet 84 is bonded and fixed to the first sub-region 820 a via a fourth adhesive layer 88 .

[0107] visible, Fig.16The battery cover 80 is equivalent to the battery cover 80 in the aforementioned Fig.13 On the basis of the middle battery cover 80, a fourth adhesive layer 88 is added between the decorative film layer 832 and the board body 811. The fourth adhesive layer 88 can be hot melt adhesive, UV adhesive, thermosetting adhesive, etc.

[0108] The adhesive surface of the Mylar sheet 84 is bonded and fixed to the decorative film layer 832 on the second cover plate 83 , and the other side surface of the Mylar sheet 84 is bonded and fixed to the first sub-region 820 a on the plate body 811 via a fourth adhesive layer 88 .

[0109] In this way, the fourth adhesive layer 88 is not directly bonded to the decorative film layer 832 on the second cover plate 83, but is bonded to the Mylar sheet 84, which is equivalent to using the Mylar sheet 84 to separate the fourth adhesive layer 88 from the decorative film layer 832. When the fourth adhesive layer 88 is cured, a part of the shrinkage stress generated in the fourth adhesive layer 88 will be dispersed to the Mylar sheet 84 (using the deformation of the Mylar sheet 84 to release this part of the shrinkage stress), and will not be directly transmitted to the decorative film layer 832 to cause deformation of the decorative film layer 832, thereby reducing the risk of poor light and shadow on the second cover plate 83 (for example, distortion and deformation of the pattern or texture on the decorative film layer 832, etc.).

[0110] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0111] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A battery cover, characterized in that: include: A bottom plate, wherein the surface of the bottom plate includes a first area and a second area; the second area includes a first sub-area and a second sub-area, and the first sub-area is arranged around the second sub-area; A first cover plate, fixed on the first area; A second cover plate, disposed on the second area; A Mylar sheet is disposed between the second cover plate and the first sub-region, one side surface of the Mylar sheet is bonded and fixed to the second cover plate, and the other side surface of the Mylar sheet is bonded and fixed to the first sub-region; A first adhesive layer, wherein the second sub-region is bonded and fixed to the second cover plate through the first adhesive layer.

2. The battery cover according to claim 1, characterized in that: The second region further includes a third sub-region, and the third sub-region extends along an edge of the second region. The third sub-region is bonded and fixed to the second cover plate via a second adhesive layer.

3. The battery cover according to claim 1, characterized in that: A plurality of the second sub-regions are provided, and the plurality of the second sub-regions are distributed at intervals, and each of the second sub-regions is bonded and fixed to the second cover plate by the first adhesive layer.

4. The battery cover according to any one of claims 1 to 3, characterized in that: The battery cover is provided with a mounting hole, and the mounting hole penetrates the second cover plate, the Mylar sheet and the bottom plate along the thickness direction of the battery cover.

5. The battery cover according to claim 4, characterized in that: The second region further includes a fourth sub-region, the fourth sub-region extends around the mounting hole, and the fourth sub-region is bonded and fixed to the second cover plate via a third adhesive layer.

6. The battery cover according to any one of claims 1 to 5, characterized in that: The bottom plate includes a plate body and a raised portion, wherein the raised portion is disposed on a surface of the plate body and divides the surface of the plate body into the first area and the second area.

7. The battery cover according to claim 6, characterized in that: The protrusion extends from one side edge of the board body to the other side edge of the board body along the length direction of the battery cover.

8. The battery cover according to any one of claims 1 to 7, characterized in that: The second cover plate includes a transparent cover plate and a decorative film layer, one side surface of the decorative film layer is fixedly connected to the transparent cover plate, and the other side surface of the decorative film layer is bonded and fixed to the Mylar sheet and the first adhesive layer.

9. The battery cover according to any one of claims 1 to 8, characterized in that: A plurality of the first regions and a plurality of the first cover plates are provided, and the plurality of the first regions and the plurality of the first cover plates are provided in a one-to-one correspondence.

10. The battery cover according to any one of claims 1 to 9, characterized in that: The second regions and the second cover plates are both provided in plurality, and the plurality of second regions and the plurality of second cover plates are provided in one-to-one correspondence.

11. The battery cover according to any one of claims 1 to 10, characterized in that: The battery cover further includes a fourth adhesive layer, and the first sub-region is bonded and fixed to the Mylar sheet via the fourth adhesive layer.

12. The battery cover according to claim 11, characterized in that: The fourth adhesive layer is hot melt adhesive.

13. An electronic device, characterized in that: The invention comprises a frame, a battery and a battery cover according to any one of claims 1 to 12, wherein the battery cover is fixed to the frame, the frame and the battery cover are arranged to form a receiving cavity, and the battery is arranged in the receiving cavity.

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