Cover plate assembly and electronic equipment

Abstract

The utility model relates to the technical field of electronic equipment, and discloses a cover plate assembly and electronic equipment, and the cover plate assembly comprises a cover plate which is provided with a preset surface facing a battery, and the preset surface is provided with a reserved cavity; and the shear thickening adhesive layer is arranged in the reserved cavity and is of a non-fluid structure. The cover plate assembly disclosed by the utility model not only can adapt to the volume change of the battery through the shear thickening adhesive layer, but also can protect the battery when the electronic equipment is subjected to external impact.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment technical field, concretely relates to a cover plate subassembly and electronic equipment. BACKGROUND

[0002] Electronic equipment is usually provided with a battery (for example, a lithium ion battery), the thickness and volume of the battery will change under different power, so the battery will present a "breathing" shrinkage and expansion phenomenon during charging and discharging.

[0003] In the related art, the back cover of the electronic equipment is usually made of a single material, which cannot adapt to the thickness and volume changes of the battery during charging and discharging. In addition, as the number of charging and discharging of the battery increases, the thickness of the battery will increase. The conventional back cover cannot provide space for the aged battery, which causes restraint or limitation to the battery, may accelerate the performance degradation of the battery, shorten the service life of the battery, and increase the safety hazard of the battery. SUMMARY

[0004] Therefore, the utility model provides a cover plate subassembly and electronic equipment to solve the problem that the cover plate cannot adapt to the volume change of the battery.

[0005] In a first aspect, the utility model provides a cover plate subassembly, which comprises: a cover plate, which is provided with a preset surface for facing the battery, the preset surface being provided with a reserved cavity; and a shear thickening glue layer, which is arranged in the reserved cavity and is configured as a non-fluid structure.

[0006] Beneficial effects: the cover plate assembly of the utility model, through setting shear thickening glue layer on the preset surface of the cover plate towards the battery, along with the slow shrinkage and expansion of the battery in the charging and discharging process, the shear thickening glue layer can adaptively deform, the shear thickening glue layer shows good flexibility and deformation flexibility, and uniformly releases the stress generated by the charging and discharging of the battery.Moreover, when the battery increases in thickness after long-term charging and discharging cycle, the shear thickening glue layer can shrink to adapt to the increased thickness of the battery, provide more space for the aging battery, reduce the restraint pressure suffered by the battery, slow down the performance degradation of the battery, help to prolong the service life of the battery and improve the safety of the battery.When the electronic equipment falls or is violently impacted by other hard objects, on the one hand, the shear thickening glue layer can show high strength instantaneously to resist external impact and enhance the impact resistance of the cover plate assembly, and on the other hand, the shear thickening glue layer can buffer the battery, thereby better protecting the battery.In addition, compared with the cover plate provided with non-Newtonian fluid in the related art, in the cover plate assembly of the utility model, since the shear thickening glue layer is not liquid, in the case of realizing the same function, the volume of the shear thickening glue layer is smaller, the arrangement space required by the shear thickening glue layer is smaller, the space of the cover plate assembly occupied by the shear thickening glue layer can be reduced, that is, the volume of the reserved cavity is smaller, the structural strength of the cover plate can be improved, and the shear thickening glue layer needs an additional structure of fixed shape, the shear thickening glue layer can be directly installed on the cover plate, the installation difficulty of the shear thickening glue layer is reduced, the assembly convenience of the cover plate assembly is improved, and the production efficiency of the cover plate assembly is further increased.

[0007] In an alternative embodiment, the shear thickening glue layer does not exceed the preset surface.

[0008] Beneficial effects: on the one hand, it is beneficial to define the shape of the shear thickening glue layer by the cover plate, avoid excessive deformation of the shear thickening glue layer under stress, ensure the working performance of the shear thickening glue layer, and on the other hand, avoid interference between the shear thickening glue layer and the battery, and ensure the convenience of arrangement between the cover plate assembly and the battery.

[0009] In an alternative embodiment, a first adhesive is arranged between the shear thickening glue layer and the inner wall of the reserved cavity.

[0010] Beneficial effects: the installation difficulty of the shear thickening glue layer is reduced, the assembly convenience of the cover plate assembly is improved, and the production efficiency of the cover plate assembly is further increased.

[0011] In an alternative embodiment, the cover plate assembly further comprises: a heat-conducting layer arranged on the side of the shear thickening glue layer away from the bottom wall of the reserved cavity and connected with the cover plate.

[0012] Beneficial effects: By setting the heat conduction layer, the heat on the battery can be timely conducted to the cover plate, the heat dissipation efficiency of the battery is increased, the working temperature of the battery is optimized, the service life of the battery is prolonged, and the working performance of the battery is improved.

[0013] In an alternative embodiment, the heat conduction layer is provided with a through hole.

[0014] Beneficial effects: The weight of the heat conduction layer can be reduced, and the energy density of the electronic device is improved.

[0015] In an alternative embodiment, the through hole is a plurality of through holes, the plurality of through holes are arranged at intervals, and are arranged in a matrix of multiple rows and multiple columns.

[0016] Beneficial effects: The overall stress of the heat conduction layer is more uniform, and the weight of the heat conduction layer is further reduced, and the energy density of the electronic device is further improved.

[0017] In an alternative embodiment, the heat conduction layer does not exceed the preset surface.

[0018] Beneficial effects: On the one hand, it is beneficial to limit the position of the heat conduction layer by the cover plate, to ensure the reliability of the connection between the heat conduction layer and the cover plate, to facilitate heat exchange between the heat conduction layer and the cover plate, and on the other hand, to avoid interference between the heat conduction layer and the battery, to ensure the convenience of arranging the cover plate assembly and the battery.

[0019] In an alternative embodiment, a second adhesive is arranged between the shear thickening gel layer and the heat conduction layer.

[0020] Beneficial effects: The installation difficulty of the heat conduction layer is reduced, the assembly convenience of the cover plate assembly is improved, and the production efficiency of the cover plate assembly is further increased.

[0021] Secondly, the utility model also provides an electronic equipment, include: body, be equipped with battery compartment;Battery, be located in the battery compartment;The cover plate assembly of first aspect is connected with the body, and covers the battery compartment, the preset surface is towards the battery, along the direction perpendicular to the cover plate assembly, the projection of the battery on the cover plate assembly is located in the shear thickening gel layer.

[0022] Beneficial effects: The electronic equipment of the utility model can realize the volume change of the battery, reduce the restraint pressure of the battery, ensure the working performance and safety of the battery, and prolong the service life of the battery by using the cover plate assembly of the first aspect.

[0023] In an alternative embodiment, along the direction perpendicular to the cover plate assembly, the distance between the side edge of the projection of the battery compartment on the cover plate assembly and the edge of the reserved cavity is not greater than 0.1cm.

[0024] Beneficial effect: the cross-sectional area of the reserved cavity is more matched with the cross-sectional area of the battery compartment, while ensuring that the shear thickening glue layer can completely cover the battery, the cross-sectional area of the reserved cavity is reduced, and the structural strength of the cover plate assembly is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 It is a structural schematic view of the cover plate assembly of the embodiment of the present application.

[0027] Figure 2 It is a sectional view of the cover plate assembly of the embodiment of the present application.

[0028] Figure 3 It is a sectional view of the shear thickening glue layer and the cover plate of the cover plate assembly of the embodiment of the present application.

[0029] Figure 4 It is a sectional view of the cover plate of the cover plate assembly of the embodiment of the present application.

[0030] Figure 5 It is a structural schematic view of the cover plate of the cover plate assembly of the embodiment of the present application.

[0031] Explanation of reference signs:

[0032] 1, cover plate assembly;

[0033] 100, cover plate; 101, preset surface; 102, reserved cavity;

[0034] 200, shear thickening glue layer;

[0035] 300, heat conduction layer; 301, through hole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0037] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0038] In the description of the utility model, the meaning of "multiple" is two or more than two. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In the related art, in order to solve the problem that the rear cover cannot adapt to the volume change of the battery, a non-newtonian fluid is additionally arranged on the rear cover. The non-newtonian fluid can be deformed under normal conditions to adapt to the volume change of the battery. When the electronic device is impacted by external force, the non-newtonian fluid becomes relatively hard, which can effectively resist external impact and reduce the probability of damage of the electronic device.

[0041] The inventor found that the non-newtonian fluid arranged on the rear cover would cause new problems. Since the non-newtonian fluid is in liquid state, the non-newtonian fluid has no fixed shape, and an additional fixing structure is needed to limit the shape of the non-newtonian fluid. In addition, the non-newtonian fluid needs a large arrangement space, and the rear cover needs to be provided with a deep groove, which affects the structural strength of the rear cover. The installation of the non-newtonian fluid is also relatively inconvenient, which reduces the assembly efficiency of the electronic device.

[0042] The embodiments of the utility model will be described below in combination with Figures 1 to 5 The embodiments of the utility model will be described below in combination with

[0043] According to the embodiments of the utility model, on the one hand, a cover plate assembly 1 is provided, which comprises a cover plate 100 and a shear thickening glue layer 200.

[0044] The cover plate 100 is provided with a preset surface 101 facing the battery, and the preset surface 101 is provided with a reserved cavity 102. A shear thickening glue layer 200 is arranged in the reserved cavity 102, and the shear thickening glue layer 200 is configured as a non-fluid structure. The material of the cover plate 100 can include one or more of metal, glass, ceramic and plastic, for example, the material of the cover plate 100 can include titanium alloy material, so as to reduce the weight of the cover plate 100 and optimize the heat conductivity of the cover plate 100.

[0045] In addition, the shear thickening glue layer 200 can be configured as a semi-solid colloid, a quasi-solid colloid or a solid colloid, and the shear thickening glue layer 200 has the characteristics of being soft when encountering softness and strong when encountering strength, that is, the shear thickening glue layer 200 is relatively soft in normal state, and becomes hard when encountering external impact such as high-speed impact or extrusion, so as to offset the external impact, and the shear thickening glue layer 200 returns to the soft state when the external impact disappears. The material of the shear thickening glue layer 200 can be polyurethane and stearate.

[0046] By arranging the shear thickening glue layer 200 on the preset surface 101 of the cover plate 100 facing the battery, the shear thickening glue layer 200 can adaptively deform with the slow shrinkage and expansion of the battery in the charging and discharging process, the shear thickening glue layer 200 has good flexibility and deformation flexibility, and can uniformly release the stress generated by the charging and discharging of the battery. In addition, when the thickness of the battery increases after long-term charging and discharging cycle, the shear thickening glue layer 200 can shrink to adapt to the increased thickness of the battery, so as to provide more space for the aged battery, reduce the restraint pressure of the battery, slow down the performance degradation of the battery, prolong the service life of the battery, and improve the safety of the battery.

[0047] When the electronic device falls or is impacted by other hard objects, on the one hand, the shear thickening glue layer 200 can instantaneously exhibit high strength to resist external impact, thereby enhancing the impact resistance of the cover plate assembly 1, and on the other hand, the shear thickening glue layer 200 can buffer the battery, thereby better protecting the battery. Compared with the cover plate provided with a non-Newtonian fluid in the related art, in the cover plate assembly of the present application, since the shear thickening glue layer is not in liquid state, the volume of the shear thickening glue layer is smaller, and the arrangement space required by the shear thickening glue layer is smaller, so that the space of the cover plate assembly occupied by the shear thickening glue layer can be reduced, that is, the volume of the reserved cavity is smaller, the structural strength of the cover plate can be improved, and the shear thickening glue layer requires an additional structure with fixed shape, the shear thickening glue layer can be directly installed on the cover plate, the installation difficulty of the shear thickening glue layer is reduced, the assembly convenience of the cover plate assembly is improved, and the production efficiency of the cover plate assembly is further increased.

[0048] By setting the reserved cavity 102, the relative position between the shear thickening glue layer 200 and the cover plate 100 can be limited, and the shear thickening glue layer 200 is prevented from excessively protruding from the cover plate 100 to affect the arrangement of the battery, thereby reducing the probability of interference between the shear thickening glue layer 200 and the battery. The reserved cavity 102 is formed in the cover plate 100, and the depth of the reserved cavity 102 can be 30%-80% of the thickness of the cover plate 100. The thickness of the cover plate 100 can be 0.4 mm-1.5 mm. For example, the depth of the reserved cavity 102 can be 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, or 80% of the thickness of the cover plate 100. The thickness of the shear thickening glue layer 200 can be 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, or 75% of the thickness of the cover plate 100. The thickness of the cover plate 100 can be 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm.

[0049] In addition, compared with the cover plate provided with a non-Newtonian fluid in the related art, in the cover plate assembly 1 of the present application, since the shear thickening glue layer 200 is not in a liquid state, the volume of the shear thickening glue layer 200 is smaller, and the arrangement space required by the shear thickening glue layer 200 is smaller, which can reduce the space of the cover plate assembly 1 occupied by the shear thickening glue layer 200, that is, the volume of the reserved cavity 102 is smaller, which can improve the structural strength of the cover plate 100, and the shear thickening glue layer 200 requires an additional structure for fixing the shape, the shear thickening glue layer 200 can be directly installed on the cover plate 100, which reduces the installation difficulty of the shear thickening glue layer 200 and improves the convenience of assembling the cover plate assembly 1, thereby increasing the production efficiency of the cover plate assembly 1.

[0050] As shown in FIGS. Figure 2 and Figure 3 In some embodiments, the shear thickening glue layer 200 does not exceed the preset surface 101. In this way, on the one hand, it is beneficial to limit the deformation of the shear thickening glue layer 200 by using the cover plate 100, to prevent the shear thickening glue layer 200 from being deformed under stress and to ensure the working performance of the shear thickening glue layer 200, and on the other hand, it is beneficial to prevent interference between the shear thickening glue layer 200 and the battery and to ensure the convenience of arrangement between the cover plate assembly 1 and the battery.

[0051] In some embodiments, the first adhesive member is arranged between the shear thickening gel layer 200 and the inner wall of the reserved cavity 102. The first adhesive member can include at least one of an adhesive, a structural adhesive, and a thermal conductive adhesive. For example, the first adhesive member can be arranged between the shear thickening gel layer 200 and the side wall of the reserved cavity 102, or the first adhesive member can be arranged between the shear thickening gel layer 200 and the bottom wall of the reserved cavity 102, or a part of the first adhesive member can be arranged between the shear thickening gel layer 200 and the bottom wall of the reserved cavity 102, and another part of the first adhesive member can be arranged between the shear thickening gel layer 200 and the side wall of the reserved cavity 102.

[0052] In this way, the installation difficulty of the shear thickening gel layer 200 is reduced, the assembly convenience of the cover plate assembly 1 is ensured, and the connection strength between the shear thickening gel layer 200 and the inner wall of the reserved cavity 102 is increased, so that the relative displacement between the shear thickening gel layer 200 and the inner wall of the reserved cavity 102 is avoided, and the shear thickening gel layer 200 is adapted to the deformation of the battery.

[0053] As shown in FIGS. 1 and Figure 2 In some embodiments, the cover plate assembly 1 further includes a thermal conductive layer 300 arranged on the side of the shear thickening gel layer 200 away from the cover plate 100, and the thermal conductive layer 300 is connected with the cover plate 100. That is, the thermal conductive layer 300 is arranged on the side of the shear thickening gel layer 200 away from the bottom wall of the reserved cavity 102. The thermal conductive layer 300 can be an organic film or an inorganic film. Preferably, the thermal conductive layer 300 can include a polyimide film with high thermal conductivity.

[0054] During the charging and discharging process of the battery, heat is generated to cause temperature rise. If the heat is not dissipated in time, the operation environment of the battery will be deteriorated, the service life of the battery will be shortened, and the working performance and safety of the battery will be affected.

[0055] By arranging the thermal conductive layer 300, the heat on the battery can be timely conducted to the cover plate 100, the heat dissipation efficiency of the battery is increased, the working temperature of the battery is optimized, the service life of the battery is prolonged, and the working performance and safety of the battery are improved.

[0056] In addition, the thermal conductive layer 300 has a simple structure, and the thickness of the thermal conductive layer 300 can be smaller than the thickness of the shear thickening gel layer 200, so as to reduce the weight and cost of the cover plate assembly 1, and further improve the energy density of the electronic device.

[0057] Further, the thermal conductive layer 300 is provided with a through hole 301, so as to reduce the weight and cost of the thermal conductive layer 300, and improve the energy density of the electronic device.

[0058] Further, the through holes 301 are multiple, the multiple through holes 301 are arranged at intervals, and are arranged in a matrix of multiple rows and multiple columns. In this way, the overall stress of the heat conduction layer 300 is more uniform, and the weight and cost of the heat conduction layer 300 are further reduced, and the energy density of the electronic device is further improved.

[0059] Figure 2 As shown, in some embodiments, the heat conduction layer 300 does not exceed the preset surface 101. In this way, on the one hand, it is beneficial to define the position of the heat conduction layer 300 by using the cover plate 100, to ensure the reliability of the connection between the heat conduction layer 300 and the cover plate 100, and to facilitate heat exchange between the heat conduction layer 300 and the cover plate 100, and on the other hand, to avoid interference between the heat conduction layer 300 and the battery, to ensure the convenience of arrangement between the cover plate assembly 1 and the battery.

[0060] In some embodiments, a second adhesive is arranged between the shear thickening gel layer 200 and the heat conduction layer 300, wherein the second adhesive can include at least one of adhesive, structural adhesive, and heat-conducting adhesive. In this way, the installation difficulty of the heat conduction layer 300 is ensured, the convenience of assembly of the cover plate assembly 1 is ensured, and the connection strength between the shear thickening gel layer 200 and the heat conduction layer 300 is increased, to avoid relative displacement between the shear thickening gel layer 200 and the heat conduction layer 300, and to facilitate ensuring the connection and heat conduction between the heat conduction layer 300 and the cover plate 100.

[0061] According to the embodiments of the utility model, on the other hand, an electronic device is also provided, and the electronic device includes a body, a battery, and the cover plate assembly 1. The electronic device can be a mobile terminal such as a mobile phone, a tablet computer, or a notebook computer.

[0062] The body is provided with a battery compartment, the battery is arranged in the battery compartment, the cover plate assembly 1 is connected with the body, the cover plate assembly 1 covers the battery compartment, the preset surface 101 faces the battery, and in a direction perpendicular to the cover plate assembly 1, a projection of the battery on the cover plate assembly 1 is located in the shear thickening gel layer 200.

[0063] The electronic device of the utility model can realize volume change of the battery, reduce restraint pressure of the battery, ensure working performance and safety of the battery, and prolong service life of the battery by using the cover plate assembly 1.

[0064] In some embodiments, in a direction perpendicular to the cover plate assembly 1, the distance between the side edge of the projection of the battery compartment on the cover plate assembly 1 and the edge of the reserved cavity 102 is not greater than 0.1 cm. For example, the distance between the side edge of the projection of the battery compartment on the cover plate assembly 1 and the edge of the reserved cavity 102 can be 0, 0.05 cm, or 0.1 cm.

[0065] In this way, the cross-sectional area of the reserved cavity 102 is more matched with the size of the cross-sectional area of the battery compartment, while ensuring that the shear thickening gel layer 200 can completely cover the battery in the battery compartment, the cross-sectional area of the reserved cavity 102 is reduced, and the structural strength of the cover plate assembly 1 is improved.

[0066] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A cover plate assembly, characterized in that, include: The cover plate (100) has a preset surface (101) for facing the battery, and the preset surface (101) has a reserved cavity (102); A shear-thickened adhesive layer (200) is disposed within the reserved cavity (102) and is constructed as a non-fluid structure.

2. The cover plate assembly according to claim 1, characterized in that, The shear-thickening adhesive layer (200) does not extend beyond the preset surface (101).

3. The cover plate assembly according to claim 1, characterized in that, A first adhesive is provided between the shear-thickening adhesive layer (200) and the inner wall of the reserved cavity (102).

4. The cover plate assembly according to any one of claims 1-3, characterized in that, Also includes: A heat-conducting layer (300) is disposed on the side of the shear-thickening adhesive layer (200) facing away from the bottom wall of the reserved cavity (102) and is connected to the cover plate (100).

5. The cover plate assembly according to claim 4, characterized in that, The thermally conductive layer (300) is provided with through holes (301).

6. The cover plate assembly according to claim 5, characterized in that, There are multiple through holes (301), which are spaced apart and arranged in a matrix of multiple rows and columns.

7. The cover plate assembly according to claim 4, characterized in that, The thermally conductive layer (300) does not extend beyond the preset surface (101).

8. The cover plate assembly according to claim 4, characterized in that, A second adhesive is provided between the shear-thickening adhesive layer (200) and the thermally conductive layer (300).

9. An electronic device, characterized in that, include: The fuselage includes a battery compartment; The battery is located in the battery compartment; The cover assembly (1) according to any one of claims 1-8 is connected to the body and covers the battery compartment, the preset surface (101) faces the battery, and along a direction perpendicular to the cover assembly (1), the projection of the battery on the cover assembly (1) is located within the shear thickening adhesive layer (200).

10. The electronic device according to claim 9, characterized in that, Along a direction perpendicular to the cover assembly (1), the distance between the side of the projection of the battery compartment onto the cover assembly (1) and the edge of the reserved cavity (102) is no greater than 0.1 cm.

Images