Batteries and electronic devices

Abstract

This application relates to the field of laptop battery technology, and in particular to a battery and electronic device. The bracket houses the battery cell; a phase change heat dissipation sheet is disposed between the inner wall of the bracket and the battery cell, and the phase change heat dissipation sheet is in contact with both the inner wall of the bracket and the battery cell. The battery and electronic device of this application solve the problems of traditional laptop batteries having separate heat dissipation and vibration damping functions, redundant weight, and low space utilization.

Description

Technical Field

[0001] This application relates to the field of notebook battery technology, and in particular to a battery and electronic device. Background Technology

[0002] With the increasing performance and thinner design of laptops, battery heat dissipation and vibration damping have become critical factors affecting device stability and lifespan. Traditional heat dissipation and vibration damping methods are bulky and heavy. Specifically:

[0003] Traditional cooling methods involve heat sinks or fans. Both require additional mounting structures, increasing size and weight. Furthermore, fan cooling presents noise and power consumption issues, making it unsuitable for thin and light laptop designs. Additionally, traditional cooling methods cannot suppress vibration.

[0004] Traditional vibration reduction methods use rubber / silicone pads, but rubber / silicone pads only provide passive vibration reduction and lack thermal management functions. Moreover, rubber / silicone pads are independent vibration reduction components, resulting in a bulky structure.

[0005] In summary, traditional laptop batteries have separate heat dissipation and vibration damping functions, resulting in redundant weight and low space utilization. Utility Model Content

[0006] The purpose of this application is to provide a battery and electronic device that solves the problems of separate heat dissipation and vibration reduction functions, redundant weight, and low space utilization in traditional laptop batteries.

[0007] According to a first aspect of this application, a battery is provided, the battery including a bracket, a phase change heat conduction sheet and a battery cell, wherein the battery cell is installed inside the bracket; the phase change heat conduction sheet is disposed between the inner wall of the bracket and the battery cell, and the phase change heat conduction sheet is in contact with both the inner wall of the bracket and the battery cell.

[0008] In any of the above technical solutions, the bracket further includes a bottom wall and a surrounding wall arranged around the edge of the bottom wall, the bottom wall and the surrounding wall forming a receiving groove for mounting the battery cell; the phase change heat conduction sheet is disposed between the surrounding wall and the battery cell, and the phase change heat conduction sheet is in contact with both the surrounding wall and the battery cell.

[0009] In any of the above technical solutions, the phase change heat-conducting sheet is further bonded to the enclosure wall, and / or the phase change heat-conducting sheet is bonded to the battery cell.

[0010] In any of the above technical solutions, a groove is further provided on the inner side of the enclosure, one side of the phase change heat conduction sheet is bonded to the groove, and the other side is in direct contact with the battery cell.

[0011] In any of the above technical solutions, the phase change heat-conducting sheet and the groove are further bonded together by a double-sided adhesive layer or a thermally conductive adhesive layer.

[0012] In any of the above technical solutions, the enclosure has a predetermined thickness, and the thickness of a portion of the enclosure is less than the predetermined thickness, so as to form a groove on the enclosure.

[0013] In any of the above technical solutions, the thickness of the phase change heat-conducting sheet is less than or equal to the depth of the groove.

[0014] In any of the above technical solutions, the bracket further includes a length direction; the bottom wall includes a first bottom plate, a middle bottom plate and a second bottom plate connected sequentially along the length direction, and the battery cells are installed on both the first bottom plate and the second bottom plate.

[0015] In any of the above technical solutions, the bracket further includes a width direction perpendicular to the length direction; the central base plate divides the enclosure into two frames; each frame includes two side walls opposite to each other in the width direction and one side wall in the length direction; the groove is provided on the inner side of the two side walls and one side wall included in each frame.

[0016] In any of the above technical solutions, further, each of the two side walls included in each part of the frame is fixed with a locking lug connector, and the groove is offset from the locking lug connector.

[0017] In any of the above technical solutions, the locking lugs of the two frames are asymmetrically arranged about the center line of the central base plate; the grooves of the two frames are asymmetrically arranged about the center line of the central base plate.

[0018] In any of the above technical solutions, a silane coupling agent layer is further provided between the groove and the phase change heat-conducting sheet.

[0019] In any of the above technical solutions, the support is further described as a polycarbonate component.

[0020] According to a second aspect of this application, an electronic device is provided, including the battery as described above.

[0021] The battery of this application includes a bracket, a phase change heat conduction sheet, and a battery cell; wherein, the battery cell is installed inside the bracket, the phase change heat conduction sheet is disposed between the inner wall of the bracket and the battery cell, and the phase change heat conduction sheet is in contact with both the inner wall of the bracket and the battery cell.

[0022] Based on the above technical features, the beneficial effects of this application are as follows:

[0023] This application incorporates a phase change heat dissipation sheet between the inner wall of the support and the battery cell. This sheet not only effectively reduces battery temperature and improves heat dissipation uniformity, but also significantly reduces the impact of vibration on the battery. Simultaneously, it balances lightweight design with high performance, providing strong protection for the battery's safe and stable operation. In other words, the phase change heat dissipation sheet of this application can simultaneously achieve vibration reduction and heat dissipation, replacing the heat sinks / fans and rubber / silicone pads in existing technologies, thus integrating heat dissipation and vibration reduction. Compared to existing technologies, the overall battery weight is lighter and space utilization is higher, thereby achieving the goal of lightweight design.

[0024] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the overall structure of a battery according to an embodiment of this application is shown;

[0027] Figure 2 Show Figure 1 Schematic diagram of the structure after the phase change heat conduction sheet is hidden;

[0028] Figure 3 Show Figure 1 Another structural diagram from another perspective;

[0029] Figure 4 Show Figure 1 A structural diagram from another perspective.

[0030] Icons: 100-Bracket; 110-Bottom wall; 111-First base plate; 112-Middle base plate; 113-Second base plate; 120-Enclosure; 121-Groove; 122-Frame; 1221-Side enclosure; 1222-Side enclosure; 130-Lock lug connector; 200-Phase change heat conduction sheet; X-Length direction; Y-Width direction. Detailed Implementation

[0031] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0032] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0033] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0034] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0035] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0036] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0037] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0038] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0039] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0040] The first aspect of this application provides a battery that solves the problems of traditional laptop batteries having separate heat dissipation and vibration damping functions, redundant weight, and low space utilization. See below for reference. Figures 1 to 4 The present application describes a battery according to some embodiments. For ease of description, the bracket 100 will be described below as having a width direction Y and a length direction X that are perpendicular to each other.

[0041] like Figure 1 , Figure 3 and Figure 4As shown, the battery of this application includes a bracket 100, a phase change heat conduction sheet 200, and a battery cell. The battery cell is installed inside the bracket; the phase change heat conduction sheet is disposed between the inner wall of the bracket and the battery cell, and is in contact with both the inner wall of the bracket and the battery cell. Preferably, to facilitate the installation of the phase change heat conduction sheet, the phase change heat conduction sheet 200 can be disposed between the bracket wall 120 and the battery cell.

[0042] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, the battery of this application includes a support 100, a phase change heat-conducting sheet 200, and a battery cell (not shown in the battery cell diagram). The support 100 includes a bottom wall 110 and a surrounding wall 120 arranged around the edge of the bottom wall 110. The bottom wall 110 and the surrounding wall 120 form a receiving groove for mounting the battery cell. The phase change heat-conducting sheet 200 is disposed between the surrounding wall 120 and the battery cell, and the phase change heat-conducting sheet 200 is in contact with both the surrounding wall 120 and the battery cell.

[0043] With this configuration, a phase change heat dissipation sheet 200 is placed between the enclosure 120 of the support 100 and the battery cell. The phase change heat dissipation sheet 200 not only effectively reduces battery temperature and improves heat dissipation uniformity, but also effectively reduces the impact of vibration on the battery, while simultaneously achieving both lightweight design and high performance, providing strong protection for the battery's safe and stable operation. In other words, the phase change heat dissipation sheet 200 of this application can simultaneously achieve vibration reduction and heat dissipation effects, replacing the heat sink / fan and rubber / silicone pads in existing technologies, thus achieving an integrated form of heat dissipation and vibration reduction. Compared to existing technologies, the overall battery weight is lighter and space utilization is higher, thereby achieving the goal of lightweight design.

[0044] It should be noted that the phase change heat transfer sheet 200 of this application is a readily available, existing product. All phase change heat transfer sheets 200 can control battery temperature through phase change heat absorption and possess a certain degree of vibration damping. Furthermore, the specific composition of the phase change heat transfer sheet 200 can be customized according to requirements. For example, the phase change heat transfer sheet 200 may include a polyurethane elastomer matrix + paraffin phase change microcapsules + expanded graphite + nano-silica. The polyurethane elastomer matrix (60-70wt%) serves as the continuous phase matrix, imparting high resilience (compression resilience > 90%) and tear resistance (tear strength > 30kN / m) to the material, which is the core source of vibration damping. The paraffin phase change microcapsules (20-30wt%, diameter 10-50μm) function for thermal management. Paraffin (core material) undergoes a solid-liquid phase change at 45±2℃, with a latent heat ≥ 180kJ / kg, controlling battery temperature through phase change heat absorption. Expanded graphite (5-10wt%) increases thermal conductivity and structural integrity, improving the material's compressive strength. Nano-silica (3-5wt%) strengthens interfacial bonding, enhances thermal stability, increases frictional damping, and supplements vibration reduction. Phase change thermal conductive sheet 200 performance: phase change temperature 45±2℃, latent heat ≥180kJ / kg, thermal conductivity ≥2.5W / m·K, compression resilience >90%.

[0045] When the phase change heat conduction sheet 200 dissipates heat for the battery, the phase change heat conduction sheet 200 first absorbs heat through phase change. At this time, the amount of heat transferred outward is relatively small. Afterward, when the phase change heat conduction sheet 200 is completely melted (latent heat is completely absorbed), if the battery continues to generate heat, the temperature of the phase change heat conduction sheet 200 will continue to rise. At this time, the heat will be transferred outward through the bracket 100.

[0046] In embodiments of this application, the support 100 can be a polycarbonate (PC) component. Polycarbonate components have good mechanical properties and heat resistance. The support 100, combined with a partially bonded phase change heat-conducting sheet 200, is designed synergistically to achieve integrated battery heat dissipation and vibration reduction, thus achieving the goal of lightweighting.

[0047] In embodiments of this application, the phase change heat conduction sheet 200 is bonded to the enclosure 120, and / or the phase change heat conduction sheet 200 is bonded to the battery cell, thereby achieving contact (adhesion) between the phase change heat conduction sheet 200 and the enclosure 120 and the battery cell.

[0048] Preferably, in embodiments of this application, such as Figure 2 As shown, a groove 121 is provided on the inner side of the enclosure 120. One side of the phase change heat conduction sheet 200 is bonded to the groove 121, and the other side is in direct contact with the battery cell.

[0049] This design of the groove 121 reduces the amount of material used in the bracket 100, helping to reduce the overall weight of the structure. Furthermore, the groove 121 facilitates the bonding of the phase change heat-conducting sheet 200. On the other hand, the other side of the phase change heat-conducting sheet 200 is in direct contact with the battery cell, without occupying additional space (space in the width direction Y). In other words, the groove 121 design prevents any additional gaps between the battery cell and the surrounding wall 120 due to the presence of the phase change heat-conducting sheet 200.

[0050] Preferably, in embodiments of this application, such as Figure 2 As shown, the groove 121 can be designed as a thinned area. Specifically, the surrounding wall 120 has a predetermined thickness, and a portion of the thickness of the surrounding wall 120 is less than the predetermined thickness, so that the groove 121 is formed on the surrounding wall 120. This arrangement facilitates the forming of the groove 121 on the bracket 100, and the process is relatively simple. In addition, the thickness of the phase change heat conduction sheet 200 is less than or equal to the depth of the groove 121. This arrangement ensures that the phase change heat conduction sheet 200 does not extend beyond the groove 121, thus avoiding the occupation of additional space. It should be noted that the battery in this application will eventually have a trademark paper wrapped around the outside of the bracket 100, which will further compress the bracket 100 and cause the groove 121 of the bracket 100 to deform inward. Therefore, the groove 121 will push the phase change heat conduction sheet 200 inward a certain distance. So the thickness of the phase change heat conduction sheet 200 can sometimes be less than the depth of the groove 121. In this way, when the bracket 100 deforms inward, it pushes the phase change heat conduction sheet 200 inward a certain distance, which will make the phase change heat conduction sheet 200 fit with the battery cell, and will not cause the phase change heat conduction sheet 200 to exceed the groove 121. At this time, the battery cell, the phase change heat conduction sheet 200 and the surrounding wall 120 are all in contact.

[0051] In the embodiments of this application, the bonding method can be selected according to requirements. The phase change heat-conducting sheet 200 and the groove 121 can be bonded by a double-sided adhesive layer or a thermally conductive adhesive layer. The thermally conductive adhesive layer has a better thermal conductivity, but its fluidity is difficult to control. The double-sided adhesive layer is convenient for bonding, but its thermal conductivity is poor.

[0052] Furthermore, a silane coupling agent layer can be provided between the groove 121 and the phase change heat conduction sheet 200. This arrangement, by coating the surface of the groove 121 of the support 100 with a silane coupling agent (KH-550), can improve the interfacial bonding strength. After coating with the silane coupling agent, the adhesion of the support 100 surface can be increased, enhancing the bonding strength between the support 100 and double-sided adhesive or thermally conductive adhesive, preventing the phase change heat conduction sheet 200 from falling off.

[0053] In the embodiments of this application, such as Figure 3As shown, the bottom wall 110 includes a first bottom plate 111, a middle bottom plate 112, and a second bottom plate 113 connected sequentially along the length direction X. The first bottom plate 111 and the second bottom plate 113 are symmetrically arranged about the center line of the middle bottom plate 112. Both the first bottom plate 111 and the second bottom plate 113 are equipped with battery cells.

[0054] See also Figure 3 The central base plate 112 divides the enclosure 120 into two frames 122. Each frame 122 includes two side walls 1221 facing each other in the width direction Y, and a side wall 1222 in the length direction X. The inner sides of the two side walls 1221 and the side wall 1222 of each frame 122 are provided with grooves 121, and a phase change heat-conducting sheet 200 is bonded to each groove 121. This arrangement effectively increases the heat dissipation area of ​​the battery cell, improves heat dissipation uniformity, and enhances vibration damping uniformity.

[0055] Furthermore, in embodiments of this application, such as Figure 3 and Figure 4 As shown, each of the two side walls 1221 of each frame 122 is fixed with a locking lug connector 130, which is used to connect to the host of the laptop computer. The groove 121 and the locking lug connector 130 are offset. This arrangement ensures that the locking lug connector 130 avoids the groove 121, preventing them from overlapping in the width direction Y, which would affect the structural strength of either the locking lug connector 130 or the groove 121. In other words, the groove 121 in this application is positioned on the wall 120 to avoid the locking lug connector 130, and a partial reduction in adhesive is implemented in vibration-sensitive areas to allow space for the phase change heat sink 200 to be attached.

[0056] See also the embodiments in this application. Figure 3 and Figure 4 The locking lugs 130 of the two frame parts 122 are asymmetrically arranged about the centerline of the central base plate 112, and the grooves 121 of the two frame parts 122 are also asymmetrically arranged about the centerline of the central base plate 112. In other words, the bracket 100 (groove 121 and locking lugs 130) of this application can be designed with an asymmetrical structure using topology optimization (such as variable density method) to prevent stress concentration and further improve vibration reduction.

[0057] In summary, the bracket 100 of this application, combined with the partially bonded phase change heat conduction sheet 200, is designed in a coordinated manner to achieve the integrated function of battery heat dissipation and vibration reduction, thereby achieving the goal of lightweighting.

[0058] The phase change heat sink 200 of this application can simultaneously achieve vibration reduction and heat dissipation, replacing the heat sink / fan and rubber / silicone pad in the prior art, and realizing an integrated form of heat dissipation and vibration reduction. Compared with the prior art, the overall battery weight is lighter and the space utilization rate is higher, thus achieving the goal of lightweighting.

[0059] The phase change heat conduction sheet 200 of this application adopts a partial bonding method, which simplifies the manufacturing process, reduces production costs, maintains lightweight and flexible structure, can be customized according to needs, and is highly practical.

[0060] This application utilizes the latent heat of phase change and vibration reduction properties of the phase change heat conduction sheet 200 to effectively reduce battery temperature, improve heat dissipation uniformity, reduce the impact of vibration, and significantly improve battery life and stability.

[0061] This application achieves functionality while maintaining the lightweight design of the stand, meeting the demands of modern laptops for both thinness and high performance, thus possessing market competitiveness.

[0062] This application utilizes the existing phase change thermal conductive sheet 200 product, combined with local bonding or filling methods, to simplify the manufacturing process, lower the technical threshold, improve production efficiency, and is suitable for large-scale production.

[0063] According to a second aspect of this application, an electronic device (e.g., a laptop computer) is provided, including the battery as described above.

[0064] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. A battery, characterized by, The battery includes a bracket, a phase change heat-conducting sheet, and a battery cell; The interior of the bracket is for mounting the battery cells; The phase change heat conduction sheet is disposed between the inner wall of the bracket and the battery cell, and the phase change heat conduction sheet is in contact with both the inner wall of the bracket and the battery cell.

2. The battery according to claim 1, characterized in that, The bracket includes a bottom wall and a surrounding wall disposed around the edge of the bottom wall, the bottom wall and the surrounding wall forming a receiving groove for mounting the battery cell; The phase change heat-conducting sheet is disposed between the enclosure and the battery cell, and the phase change heat-conducting sheet is in contact with both the enclosure and the battery cell.

3. The battery of claim 2, wherein, The phase change heat-conducting sheet is bonded to the enclosure wall, and / or the phase change heat-conducting sheet is bonded to the battery cell.

4. The battery of claim 3, wherein, The inner side of the enclosure is provided with a groove, one side of the phase change heat conduction sheet is bonded to the groove, and the other side is in direct contact with the battery cell.

5. The battery of claim 4, wherein, The phase change heat-conducting sheet is bonded to the groove by a double-sided adhesive layer or a thermally conductive adhesive layer.

6. The battery of claim 4, wherein, The enclosure has a predetermined thickness, and a portion of the enclosure has a thickness less than the predetermined thickness to form grooves in the enclosure.

7. The battery of claim 6, wherein, The thickness of the phase change heat-conducting sheet is less than or equal to the depth of the groove.

8. The battery according to claim 4, characterized in that, The bracket has a length direction; The bottom wall includes a first bottom plate, a middle bottom plate, and a second bottom plate connected sequentially along the length direction, and the battery cell is installed on both the first bottom plate and the second bottom plate.

9. The battery of claim 8, wherein, The support also has a width direction perpendicular to the length direction; the central base plate divides the enclosure into two frames. Each frame section includes two side walls opposite each other in the width direction and one side wall in the length direction; the grooves are provided on the inner sides of the two side walls and one side wall included in each frame section.

10. The battery of claim 9, wherein, Each frame section has two side walls with locking lugs fixed to their outer sides, and the grooves are offset from the locking lugs.

11. The battery of claim 10, wherein, The locking lugs of the two frame sections are asymmetrically arranged about the centerline of the central base plate; The grooves in the two frame sections are asymmetrically arranged about the centerline of the central base plate.

12. The battery of claim 4, wherein, A silane coupling agent layer is disposed between the groove and the phase change heat-conducting sheet.

13. The battery of any one of claims 1-12, wherein, The support is made of polycarbonate.

14. An electronic device, comprising: Includes the battery as described in any one of claims 1-13.

Images