Charging head shell and charging head
By setting an inner layer, an outer layer, and a heat dissipation layer in the charging head housing, and setting a heat dissipation channel connecting to the outside in the heat dissipation layer, the problem of excessive surface temperature of the charging head housing is solved, achieving efficient heat dissipation and structural stability, and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-06
AI Technical Summary
The existing heat dissipation structure of the charger is insufficient, resulting in excessively high surface temperature of the casing, which affects the user experience and poses a risk of burns.
The charging head housing adopts a three-layer structure, including an inner layer, an outer layer, and a heat dissipation layer. The heat dissipation layer is equipped with heat dissipation channels that are connected to the outside world, and heat exchange is carried out through natural heat convection or pressure difference, which increases the heat dissipation area and improves heat dissipation efficiency.
It significantly reduces the surface temperature of the casing, improves the user experience, enhances the structural stability of the casing, simplifies the manufacturing process, and increases overall strength.
Smart Images
Figure CN223978169U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of charging head technology, and particularly relates to a charging head housing and a charging head. Background Technology
[0002] With the rapid proliferation of portable electronic devices, smartphones, tablets, and wireless headphones have become essential parts of daily life. These devices generally employ high-energy-density batteries and rely on fast-charging technology to enhance the user experience. Currently, the power of mainstream chargers has increased from the traditional 5W to the hundred-watt level, and super-fast charging technology can even fully charge a device in tens of minutes.
[0003] However, the dramatic increase in power density leads to a significant rise in the operating temperature of the electronic components inside the charger (such as transformers and power chips). Under continuous high-current operation, the internal temperature of the charger may exceed 80°C. Traditional heat dissipation solutions rely on the natural heat conduction of the casing material, which means that the surface temperature of the casing may still reach above 50°C. This not only affects the user experience but also poses a risk of burns to users.
[0004] Therefore, there is an urgent need for a charging head housing and charging head design that can optimize heat dissipation structure and reduce the surface temperature of the housing. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a charging head housing and charging head that optimizes the heat dissipation structure of the charging head, significantly reduces the surface contact temperature of the charging head housing, and improves the user experience.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A charging head housing includes a housing sidewall and a receiving space surrounding the housing sidewall for accommodating electronic components;
[0008] The housing sidewall includes an inner housing layer located inside the charging head housing to form the inner sidewall of the receiving space, an outer housing layer located outside the charging head housing, and a heat dissipation layer between the inner housing layer and the outer housing layer. The heat dissipation layer is provided with heat dissipation channels, and the two ends of the heat dissipation channels are connected to the outside to form a first heat dissipation port and a second heat dissipation port.
[0009] The heat generated by the electronic components will be transferred to the heat dissipation layer through the inner layer of the housing, and will exchange heat with the outside through the first heat dissipation port and the second heat dissipation port at both ends of the heat dissipation channel in the form of natural heat convection or pressure difference driven heat exchange.
[0010] Furthermore, the heat dissipation layer is provided with multiple connecting segments and multiple heat dissipation channels. The connecting segments are arranged in parallel and connected between the inner layer of the housing and the outer layer of the housing. The heat dissipation channels are formed between two adjacent connecting segments.
[0011] Furthermore, the cross-section of the heat dissipation channel is trapezoidal.
[0012] Furthermore, the trapezoid is an isosceles trapezoid and the sum of the two sides is greater than the base.
[0013] Furthermore, the cross-section of the heat dissipation channel is triangular.
[0014] Furthermore, the inner shell layer, the connecting section, and the outer shell layer are integrally formed.
[0015] Optionally, the heat dissipation channel is formed by hollowing out the heat dissipation layer.
[0016] Furthermore, the charging head housing has a rounded rectangular structure, and the inner layer and the outer layer of the housing are supported by a support section located at the rounded corner. The heat dissipation channel is formed on the side of the charging head housing between the inner layer, the outer layer of the housing and the support section.
[0017] Furthermore, a support grid is provided at the second heat dissipation vent.
[0018] This utility model also provides a charging head, including the charging head housing, a power plug and an output interface disposed on the opposite side of the power plug, and electronic components disposed in the receiving space. The first heat dissipation vent is close to the end where the power plug is located and surrounds the edge of the end where the power plug is located, and the second heat dissipation vent is close to the end where the output interface is located and surrounds the edge of the end where the output interface is located.
[0019] The beneficial effects of this utility model are:
[0020] This invention utilizes an inner shell layer, an outer shell layer, and a heat dissipation layer, with heat dissipation channels communicating with the outside environment within the heat dissipation layer. This enables efficient heat transfer from electronic components to the outside, improving heat dissipation and reducing the surface temperature of the shell. By incorporating multiple connecting sections and heat dissipation channels between adjacent connecting sections, the heat dissipation area is increased, optimizing heat distribution and further enhancing heat dissipation efficiency. Designing the inner shell layer, connecting sections, and outer shell layer as a single molded structure improves the overall strength and heat dissipation performance of the shell, while simplifying the manufacturing process and reducing assembly difficulty. The heat dissipation channels, formed by hollowing out the heat dissipation layer, effectively reduce the surface temperature of the shell. The inclusion of support sections and support grids in the charging head shell enhances structural stability. This invention optimizes the heat dissipation structure of the charging head, significantly reducing the surface contact temperature of the charging head shell and improving the user experience. Attached Figure Description
[0021] Appendix Figure 1 This is a schematic diagram of the charging head of Embodiment 4 of this utility model;
[0022] Appendix Figure 2 This is a schematic diagram of the charging head of Embodiment 4 of this utility model;
[0023] Appendix Figure 3 This is a schematic diagram of the charging head of Embodiment 4 of this utility model;
[0024] Appendix Figure 4 This is a schematic diagram of the structure of the charging head housing according to Embodiment 1 of this utility model;
[0025] Appendix Figure 5 This is a schematic diagram of the structure of the charging head housing according to Embodiment 1 of this utility model;
[0026] Appendix Figure 6 This is a schematic diagram of the structure of the charging head housing according to Embodiment 2 of this utility model;
[0027] Appendix Figure 7 This is a schematic diagram of the structure of the charging head housing according to Embodiment 3 of this utility model;
[0028] The diagram shows the following labels: 1-Charging head housing, 110-Housing side wall, 111-Housing inner layer, 112-Housing outer layer, 113-Heat dissipation layer, 1131-Heat dissipation channel, 1132-First heat dissipation vent, 1133-Second heat dissipation vent, 1134-Connecting section, 114-Supporting section, 115-Supporting grid, 120-Accommodation space; 2-Power plug; 3-Output interface. Detailed Implementation
[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0030] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this utility model.
[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0032] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0033] See appendix Figure 1 To be continued Figure 7 The figure shows a specific embodiment of the charging head housing and charging head provided by this utility model. Example 1
[0034] See appendix Figure 1 To be continued Figure 3 The charging head housing includes:
[0035] The charging head housing 1 includes a housing side wall 110 and a housing space 120 enclosing the housing side wall 110 for accommodating electronic components;
[0036] The housing sidewall 110 includes an inner housing layer 111 located inside the charging head housing 1 to form the inner sidewall of the receiving space 120, an outer housing layer 112 located outside the charging head housing 1, and a heat dissipation layer 113 between the inner housing layer 111 and the outer housing layer 112. The heat dissipation layer 113 is provided with heat dissipation channels 1131, and the two ends of the heat dissipation channels 1131 are connected to the outside to form a first heat dissipation port 1132 and a second heat dissipation port 1133.
[0037] The heat generated by the electronic components will be transferred to the heat dissipation layer 113 through the inner layer 111 of the housing, and will be exchanged with the outside through the first heat dissipation port 1132 and the second heat dissipation port 1133 at both ends of the heat dissipation channel 1131 by natural heat convection or pressure difference.
[0038] See appendix Figure 3 and attached Figure 4 In the above embodiment, the sidewall 110 of the housing is divided into an inner layer 111, a heat dissipation layer 113, and an outer layer 112 from the inside out. The heat dissipation channels 1131 of the heat dissipation layer 113 are connected to the outside at both ends but not directly connected to the receiving space 120. In the prior art, relying on the natural heat conduction of the housing material, when the charging head is working, the heat generated by the electronic components is transferred to the housing, resulting in a high surface temperature of the housing and affecting the user experience. In this embodiment, due to the presence of the heat dissipation layer 113 and the outer layer 112, when the charging head is working, the heat generated by the electronic components is transferred to the inner layer 111, and the temperature of the heat dissipation channels 1131 in the heat dissipation layer 113 rises. At the same time, due to the presence of the first heat dissipation port 1132 and the second heat dissipation port 1133, the hot air in the heat dissipation channels 1131 can exchange heat with the outside through natural heat convection or pressure difference. Therefore, the outer layer 112 is less affected by the hot air, and its temperature will be lower than that of the inner layer 111. When the user touches the outer layer 112, the risk of burns is avoided, and the user experience is improved.
[0039] See appendix Figure 4 and attached Figure 5In the above embodiment, the heat dissipation layer 113 is provided with multiple connecting segments 1134 and multiple heat dissipation channels 1131. The connecting segments 1134 are arranged side by side and connected between the inner layer 111 and the outer layer 112 of the housing. The heat dissipation channel 1131 is formed between two adjacent connecting segments 1134. In this embodiment, the inner layer 111, the connecting segments 1134, and the outer layer 112 of the housing are integrally formed. When the electronic components in the housing space 120 generate heat, the heat generated will be transferred to the inner layer 111 and the connecting segments 1134. Since the heat dissipation channel 1131 is formed between two adjacent connecting segments 1134 and is located between the inner layer 111 and the outer layer 112 of the housing, the heat in the inner layer 111 and the connecting segments 1134 can also be dissipated into the heat dissipation channel 1131. In this embodiment, the width of the heat dissipation channel 1131 is approximately 0.5-2 mm. At this point, if the heat dissipation channel 1131 is not horizontal, assuming the second heat dissipation port 1133 is at a higher position and the first heat dissipation port 1132 is at a lower position, when heat is dissipated into the heat dissipation channel 1131, the air temperature inside the channel 1131 rises. The hot air, due to its decreased density, experiences buoyancy and flows upward, exiting from the higher end of the channel 1131, i.e., the second heat dissipation port 1133. Because the fluid needs to maintain continuity, a local low-pressure zone will form near the lower end of the channel 1131, i.e., near the first heat dissipation port 1132. This will cause external cold air to enter the channel 1131 from the first heat dissipation port 1132 to replenish the flow. Since the aperture of the heat dissipation channel 1131 is small, viscous forces dominate the flow, resulting in a lower air velocity and a flow state closer to laminar flow. The replenishment of cold air mainly relies on the pressure difference at the lower end.
[0040] See appendix Figure 4 and attached Figure 5 In the above embodiment, the cross-section of the heat dissipation channel 1131 is trapezoidal. In this embodiment, the trapezoid is isosceles, and the sum of the areas of the two sides is greater than the base. That is, within the heat dissipation channel 1131, the sum of the areas of the planes corresponding to the two sides of the trapezoid is greater than the area corresponding to the base. Heat from the inner layer 111 of the housing and the connecting section 1134 is dissipated into the heat dissipation channel 1131, increasing the heat dissipation area and improving the heat dissipation effect compared to traditional single-plane heat dissipation. In an optional embodiment, the cross-section of the heat dissipation channel 1131 can also be triangular. Example 2
[0041] See appendix Figure 6The charging head housing 1 includes a housing sidewall 110 and a housing space 120 enclosing the housing sidewall 110 for accommodating electronic components. The housing sidewall 110 includes an inner housing layer 111 located inside the charging head housing 1 to form the inner sidewall of the housing space 120, an outer housing layer 112 located outside the charging head housing 1, and a heat dissipation layer 113 between the inner housing layer 111 and the outer housing layer 112. The heat dissipation layer 113 is provided with heat dissipation channels 1131, and the two ends of the heat dissipation channels 1131 are connected to the outside to form a first heat dissipation port 1132 and a second heat dissipation port 1133. The heat generated by the electronic components will be transferred to the heat dissipation layer 113 through the inner housing layer 111, and exchanged with the outside through the first heat dissipation port 1132 and the second heat dissipation port 1133 at both ends of the heat dissipation channels 1131 by natural heat convection or pressure difference.
[0042] See appendix Figure 6 In this embodiment, the heat dissipation channel 1131 is formed by hollowing out the heat dissipation layer 113. Specifically, the charging head housing 1 has a rounded rectangular structure. The inner layer 111 and the outer layer 112 are supported by a support segment 114 located at the rounded corner. The heat dissipation channel 1131 is formed between the inner layer 111, the outer layer 112, and the support segment 114 on the side of the charging head housing 1. In this embodiment, the inner layer 111 has a rounded rectangular structure. The support segment 114 extends outward from the rounded corner of the inner layer 111 and supports the outer layer 112, so that the outer layer 112 and the inner layer 111 are separated from each other by 0.5-2mm except for the support segment 114 to form the heat dissipation channel 1131, which is equivalent to the heat dissipation channel 1131 being formed by hollowing out the heat dissipation layer 113.
[0043] If the heat dissipation channel 1131 is not horizontal, assuming that the second heat dissipation port 1133 is at a higher position and the first heat dissipation port 1132 is at a lower position, when heat is dissipated into the heat dissipation channel 1131, the air temperature inside the heat dissipation channel 1131 rises. The hot air, due to its lower density, forms buoyancy and flows upward, leaving from the higher end of the heat dissipation channel 1131, i.e., the second heat dissipation port 1133. At this time, the width of the heat dissipation channel 1131 in this embodiment is larger than that in embodiment 1. Therefore, the colder air, due to its higher density, can sink from the second heat dissipation port 1133, realizing the circulation of hot and cold air to form natural convection.
[0044] If the heat dissipation channel 1131 is horizontal, the heated air, due to its reduced density, will still be affected by buoyancy and gather upwards perpendicular to the channel axis, forming a high-temperature zone. In an open environment, the hot air preferentially escapes slowly from the upper parts of the first heat dissipation port 1132 and the second heat dissipation port 1133 at both ends of the heat dissipation channel 1131. When the hot air is discharged from both ends of the heat dissipation channel 1131, a low-pressure zone is formed inside the heat dissipation channel 1131, and external cold air will be drawn in from the lower parts of the first heat dissipation port 1132 and the second heat dissipation port 1133, realizing the circulation of hot and cold air and forming natural convection. Example 3
[0045] See appendix Figure 7 In this embodiment, based on embodiment 2, a support grid 115 is provided at the second heat dissipation vent 1133. In this embodiment, the support grid 115 is used to enhance the stability of the housing structure, prevent deformation or damage caused by the user applying excessive force to the outer layer 112 of the charging head housing during the plugging and unplugging process, and also improve the aesthetics of the second heat dissipation vent 1133. Example 4
[0046] See appendix Figure 1 To be continued Figure 3 This embodiment provides a charging head, which includes the charging head housing as described in any of the above embodiments, a power plug 2, an output interface 3 disposed on the opposite side of the power plug 2, and electronic components disposed within a receiving space 120. A first heat dissipation vent 1132 is located near the end of the power plug 2 and surrounds the edge of that end. A second heat dissipation vent 1133 is located near the end of the output interface 3 and surrounds the edge of that end. In this embodiment, the two end faces of the cuboid charging head where the power plug 2 and the output interface 3 are located are not provided with a heat dissipation layer 113. The other four sides are provided with the aforementioned inner housing layer 111, heat dissipation layer 113, and outer housing layer 112. When the power plug 2 is inserted downwards into the socket, the output interface 3 faces upwards. Hot air in the heat dissipation channel 1131 rises from the second heat dissipation vent 1133, and cold air is replenished into the heat dissipation channel 1131 from the first heat dissipation vent 1132 under the pressure difference, thereby achieving heat dissipation.
[0047] In summary, this embodiment provides a charging head housing and a charging head. By setting an inner layer 111, an outer layer 112, and a heat dissipation layer 113, and providing a heat dissipation channel 1131 in the heat dissipation layer 113 that communicates with the outside, the heat generated by the electronic components is efficiently transferred to the outside, improving the heat dissipation effect and reducing the surface temperature of the housing. By setting multiple connecting sections 1134 and heat dissipation channels 1131, and forming the heat dissipation channels 1131 between adjacent connecting sections, the heat dissipation area is increased, the heat distribution is optimized, and the heat dissipation efficiency is further improved. By designing the inner layer 111, connecting sections 1134, and outer layer 112 as an integrally formed structure, the overall strength and heat dissipation performance of the housing are improved, while the manufacturing process is simplified and the assembly difficulty is reduced. By forming the heat dissipation channel 1131 by hollowing out the heat dissipation layer 113, the surface temperature of the housing is effectively reduced. By setting a support section 114 and a support grid 115 in the charging head housing 1, the structural stability of the housing is enhanced. This embodiment can optimize the heat dissipation structure of the charging head, significantly reduce the surface contact temperature of the charging head housing, and improve the user experience.
[0048] The embodiments described above are merely one of the preferred embodiments of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of this utility model should be included within the protection scope of this utility model.
Claims
1. A charging head shell, characterized in that: the charging head shell (1) comprises a shell side wall (110) and a containing space (120) for containing electronic components surrounded in the shell side wall (110); the shell side wall (110) comprises a shell inner layer (111) on the inner side of the charging head shell (1) to form the inner side wall of the containing space (120), a shell outer layer (112) on the outer side of the charging head shell (1), and a heat dissipation layer (113) between the shell inner layer (111) and the shell outer layer (112), the heat dissipation layer (113) is provided with a heat dissipation channel (1131), and the heat dissipation channel (1131) is communicated with the outside at both ends to form a first heat dissipation port (1132) and a second heat dissipation port (1133); the heat generated by the electronic components is transmitted to the heat dissipation layer (113) through the shell inner layer (111), and is exchanged with the outside in a natural heat convection or pressure difference driven manner through the first heat dissipation port (1132) and the second heat dissipation port (1133) at both ends of the heat dissipation channel (1131). The heat dissipation layer (113) is provided with a plurality of connecting sections (1134) and a plurality of heat dissipation channels (1131), the connecting sections (1134) are arranged side by side and connected between the shell inner layer (111) and the shell outer layer (112), and the heat dissipation channels (1131) are formed between adjacent two connecting sections (1134). The cross section of the heat dissipation channel (1131) is trapezoidal. The trapezoid is isosceles trapezoid, and the sum of the two legs is greater than the base.
2. A charging head housing according to claim 1, wherein, The cross section of the heat dissipation channel (1131) is triangular.
3. A charging head housing according to claim 2, wherein, The shell inner layer (111), the connecting section (1134) and the shell outer layer (112) are integrally formed.
4. A charging head housing according to claim 3, wherein, The heat dissipation channel (1131) is formed by the heat dissipation layer (113) being hollowed out.
5. A charging head housing according to claim 2, wherein, The charging head shell (1) is a rounded rectangular structure, the shell inner layer (111) and the shell outer layer (112) are supported by a support section (114) located at the rounded corner, and the heat dissipation channel (1131) is formed between the shell inner layer (111), the shell outer layer (112) and the support section (114) at the side of the charging head shell (1).
6. A charging head housing according to any one of claims 2-5, wherein, The second heat dissipation port (1133) is provided with a support grid (115).
7. A charging head housing according to claim 1, wherein, The charging head shell comprises a power plug (2), an output interface (3) arranged on the opposite side of the power plug (2), and electronic components arranged in the containing space (120), the first heat dissipation port (1132) is close to one end of the power plug (2) and surrounds the edge of one end of the power plug (2), and the second heat dissipation port (1133) is close to one end of the output interface (3) and surrounds the edge of one end of the output interface (3).
8. A charging head housing according to claim 7, wherein, 9. A charging head housing according to claim 8, wherein, 10. A charging head, characterized by