Mobile phone protection shell with phase change material
By designing the shell and cover structure in the phone case and combining it with the phase change material infusion method, the issues of material compatibility and cost were solved, achieving efficient heat dissipation and aesthetically pleasing phone protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SHANMO DIGITAL TECH CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-28
AI Technical Summary
Existing mobile phone protective case materials have poor compatibility, high production costs, and the performance of phase change materials is affected, resulting in poor heat dissipation and impacting the performance and lifespan of the mobile phone.
Design a mobile phone protective case that adopts a shell and cover plate structure. The back plate has a cavity, and the cover plate forms a receiving cavity. A phase change material is poured in and filled through a filling hole. Combined with a transparent cover plate and a magnetic placement area, the phase change material can be freely poured in and its color can be changed, simplifying the process and reducing costs.
It improves material compatibility, reduces production costs, maintains the performance of phase change materials, enhances heat dissipation, and improves aesthetics through color changes.
Smart Images
Figure CN224178185U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic device accessories, and in particular to a mobile phone protective case with phase change material. Background Technology
[0002] Besides communication functions, mobile phones also have work and entertainment applications, making them indispensable in people's daily lives and work. With the advent of the mobile phone era, mobile phone cases have also developed extensively. Currently, most mobile phone cases on the market have relatively simple functions, only protecting the phone and lacking heat dissipation capabilities. Common ordinary mobile phone cases are mostly made of silicone or PC materials, which have poor thermal conductivity and dissipation performance. There is almost no thermally conductive medium connecting the phone and the case. When the phone generates heat, the heat not only cannot be conducted to the case, but heat dissipation is actually hindered. Especially for portable devices such as smartphones, miniaturization and weight reduction are necessary to maximize portability and convenience for users. Furthermore, to achieve high performance, integrated components are installed in a smaller space. During prolonged use or when running many programs, a lot of heat is generated. If this heat cannot be dissipated in time, it will cause the phone to become sluggish and reduce battery life. Over time, this will affect the phone's performance and cause significant inconvenience to the user.
[0003] Later, a cooling protective case for mobile terminals appeared on the market, comprising a protective case body and a phase change material. The protective case body has a cavity that completely covers the mobile terminal's battery, and the phase change material fills the cavity. The protective case body and the phase change material are integrally injection molded. By filling the cavity of the protective case with the phase change material, heat storage and temperature regulation can be achieved. However, this type of phone case has the following drawbacks:
[0004] For example, the protective case body and the phase change material are made by one-piece injection molding, which makes its material compatibility poor. This is because the protective case body is usually made of materials such as plastic and rubber, while there are many types of phase change materials, such as organic and inorganic. The physical and chemical properties of different materials are quite different. During the one-piece injection molding process, it is easy to cause insufficient bonding between the two, which can easily lead to problems such as delamination and peeling during use, affecting the performance and service life of the protective case.
[0005] Secondly, the performance of phase change materials is affected. During the injection molding process, the material needs to be heated to reach a molten state and then cooled and shaped in the mold. The high temperature in this process will affect the performance of the phase change material, such as changing the phase change temperature, reducing its latent heat of phase change, or causing changes in the crystal structure of the phase change material, thereby affecting its energy storage and release effects. Finally, the manufacturing process is complex and the production cost is high.
[0006] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content
[0007] In view of the above, this utility model addresses the deficiencies of the existing technology, and its main objective is to provide a mobile phone protective case with phase change material. Through the structural design and cooperation of the shell, cover plate, and phase change material, a recessed cavity is formed on the side of the back plate away from the mounting position. The cover plate closes to the recessed cavity to form a receiving cavity. The receiving cavity is filled with phase change material. Thus, the phase change material can absorb the heat generated by the mobile phone in the mounting position, causing the phase change material to change color, thereby improving the aesthetic appearance of the protective case. Furthermore, the filling method allows for free control of the material amount to avoid waste, the process is simple, production costs are reduced, and the material has good compatibility and will not affect the performance of the phase change material.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] A mobile phone protective case with phase change material includes a shell and a cover plate; the shell includes at least a back plate portion and a frame portion; the back plate portion and the frame portion form a mounting position for mounting a mobile phone; a cavity is recessed on the side of the back plate portion away from the mounting position, and the cover plate covers the cavity to form a receiving cavity; a filling hole communicating with the receiving cavity is also provided on the side of the back plate portion away from the mounting position; the receiving cavity is filled with phase change material, which can absorb the heat generated by the mobile phone in the mounting position, causing the phase change material to change color.
[0010] As a preferred embodiment, the phase change material is an inorganic phase change material, an organic phase change material, or a composite phase change material.
[0011] As a preferred embodiment, the phase change material is an organic phase change material.
[0012] As a preferred embodiment, the organic phase change material is a waxy organic phase change material.
[0013] As a preferred embodiment, the cover plate has a magnetic placement area on the side away from the installation position.
[0014] As a preferred option, the cover plate is made of a transparent material.
[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly achieves this through the structural design and cooperation of the shell, cover plate, and phase change material. The back plate has a recessed cavity on the side away from the mounting position, and the cover plate covers the recessed cavity to form a receiving cavity. The back plate also has a liquid filling hole communicating with the receiving cavity on the side away from the mounting position. The receiving cavity is filled with phase change material, so that the phase change material can absorb the heat generated by the mobile phone in the mounting position, causing the phase change material to change color. When the mobile phone is installed in the mounting position of the protective case, during normal long-term use, the mobile phone generates heat, and at this time the phase change material changes color (such as changing from a white solid to a blue liquid, red liquid, or other colored liquid), and the aesthetic appearance of the protective case changes.
[0016] Secondly, the design of filling the phase change material into the cavity allows for free control of the amount of material to avoid waste. The process is simple, production costs are reduced, and the material has good compatibility and will not affect the performance of the phase change material.
[0017] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description
[0018] Figure 1 This is a perspective view of an embodiment of the present utility model;
[0019] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;
[0020] Figure 3 This is another cross-sectional view of an embodiment of the present invention (without phase change material filling);
[0021] Figure 4 This is an exploded view of an embodiment of the present invention (phase change material not shown).
[0022] Explanation of reference numerals in the attached diagram:
[0023] 10. Shell 11. Backplate
[0024] 12. Frame section 13. Mounting position
[0025] 14. Concave cavity 15. Receiving cavity
[0026] 16. Filling hole; 17. Magnetic placement area
[0027] 20. Cover plate; 30. Phase change material. Detailed Implementation
[0028] Please refer to Figures 1 to 4As shown, it illustrates the specific structure of an embodiment of the present invention.
[0029] In the description of this utility model, it should be noted that the directional terms such as "up", "down", "front", "back", "left", and "right" indicate the orientation and positional relationship based on the accompanying drawings or the orientation or positional relationship shown when wearing and using the device normally. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.
[0030] A mobile phone case with phase change material includes a shell 10, a cover plate 20, and a phase change material 30.
[0031] The housing 10 includes at least a back panel portion 11 and a frame portion 12; the back panel portion 11 and the frame portion 12 form a mounting position 13 for mounting a mobile phone; a recessed cavity 14 is provided on the side of the back panel portion 11 away from the mounting position 13, and the cover plate 20 covers the recessed cavity 14 to form a receiving cavity 15; preferably, a magnetic placement area 17 is provided on the side of the cover plate 20 away from the mounting position 13. Preferably, the cover plate 20 is made of a transparent material.
[0032] The back panel 11, on the side away from the mounting position 13, is also provided with a filling hole 16 communicating with the receiving cavity 15; the receiving cavity 15 is filled with phase change material 30, which can absorb the heat generated by the mobile phone in the mounting position, causing the phase change material 30 to change color. After the phase change material 30 is filled into the filling hole 16, the filling hole 16 is sealed. It can be sealed by a sealing component or by a sealing liquid, and the sealing method can be selected according to actual needs.
[0033] Preferably, the phase change material 30 is an inorganic phase change material, an organic phase change material, or a composite phase change material. Preferably, the phase change material 30 is an organic phase change material; wherein, the phase change material is liquid when heated and solid when cooled; and the color of the phase change material changes accordingly when the phone's temperature rises.
[0034] Phase change materials (PCMs) are substances that change their state of matter and provide latent heat while maintaining a constant temperature. Any material that can generate a large amount of heat of fusion during melting can be called a PCM. The process of a substance changing from one phase to another is called a phase change, which corresponds to the three states of matter: solid, liquid, and gas. Matter has a solid phase, a liquid phase, and a gas phase. During a phase change, energy is usually absorbed or released.
[0035] Organic phase change materials: can be melted and solidified multiple times without phase separation, and have very little or no supercooling during crystallization. They are usually non-corrosive and are generally divided into paraffinic and non-paraffinic types. They have stable physicochemical properties, large latent heat of phase change, and good thermal stability.
[0036] Inorganic phase change materials: mainly used in low-temperature and high-temperature environments, including crystalline hydrated salts, molten salts, and metals;
[0037] Preferably, the organic phase change material is a waxy organic phase change material; the main components of the waxy phase change material are various waxes, such as paraffin wax and beeswax, and its phase change process is a physical change, that is, it converts between solid and liquid states by absorbing or releasing heat to achieve temperature regulation.
[0038] In this embodiment, thermochromic pigments or dyes can be added to the waxy organic phase change material: the thermochromic pigments or dyes are uniformly mixed with the waxy phase change material, and the molecules in the thermochromic pigments or dyes undergo structural or electronic energy level changes when heated, thereby causing changes in the absorption or reflection of light of a specific wavelength, and thus producing color changes.
[0039] Alternatively, a coating containing thermochromic substances can be formed on the surface of the waxy phase change material. For example, a coating containing thermochromic pigments can be uniformly applied to the surface of the waxy phase change material through processes such as coating or spraying. Taking spraying as an example, the thermochromic pigments are first mixed with suitable solvents and additives to prepare a coating, and then the coating is sprayed onto the surface of the waxy phase change material using a spray gun. After the solvent evaporates, a coating that changes color with temperature is formed.
[0040] Alternatively, waxy phase change materials can be combined with other materials possessing thermochromic properties; for example, waxy materials can be combined with certain thermochromic polymers, liquid crystal materials, etc., through blending, copolymerization, or other methods. Taking blending as an example, waxy phase change materials and thermochromic polymers are melt-blended at a certain temperature to ensure thorough and uniform mixing, forming a composite phase change material with both phase change energy storage and thermochromic functions. When the phone's temperature rises, the thermochromic component in the composite phase change material will change color in response to the temperature change.
[0041] The key design feature of this invention lies in the structural design and coordination of the shell, cover plate, and phase change material. A recessed cavity is provided on the side of the back plate away from the mounting position, and the cover plate closes to this cavity to form a receiving chamber. A liquid filling hole communicating with the receiving chamber is also provided on the side of the back plate away from the mounting position. The receiving chamber is filled with phase change material, allowing it to absorb the heat generated by the phone within the mounting position, causing the phase change material to change color. When the phone is inserted into the mounting position of the protective case, during normal long-term use, the phone generates heat, causing the phase change material to change color (e.g., from a white solid to a blue liquid, red liquid, or other colored liquid), thus altering the aesthetic appearance of the protective case.
[0042] Secondly, the design of filling the phase change material into the cavity allows for free control of the amount of material to avoid waste. The process is simple, production costs are reduced, and the material has good compatibility and will not affect the performance of the phase change material.
[0043] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A mobile phone protective case with a phase change material, characterized in that: The device includes a housing (10) and a cover plate (20); the housing (10) includes at least a back plate portion (11) and a frame portion (12); the back plate portion (11) and the frame portion (12) form a mounting position (13) for mounting a mobile phone; a recess (14) is provided on the side of the back plate portion (11) away from the mounting position (13), and the cover plate (20) covers the recess (14) to form a receiving cavity (15); a filling hole (16) communicating with the receiving cavity (15) is also provided on the side of the back plate portion (11) away from the mounting position (13); a phase change material (30) is filled in the receiving cavity (15), and the phase change material (30) can absorb the heat generated by the mobile phone in the mounting position, causing the phase change material to change color.
2. The mobile phone protective case with phase change material according to claim 1, characterized in that: The phase change material (30) is an inorganic phase change material, an organic phase change material, or a composite phase change material.
3. The mobile phone protective case with phase change material according to claim 2, characterized in that: The phase change material (30) is an organic phase change material.
4. The mobile phone protective case with phase change material according to claim 3, characterized in that: The organic phase change material is a waxy organic phase change material.
5. The mobile phone protective case with phase change material according to claim 1, characterized in that: A magnetic placement area (17) is provided on the side of the cover plate (20) away from the installation position (13).
6. The mobile phone protective case with phase change material according to claim 1, characterized in that: The cover plate (20) is made of transparent material.