A fast charger shell structure with temperature protection
By incorporating symmetrical cooling fans and heat-conducting strips within the fast charger casing, combined with a filter ring design, the problem of heat accumulation caused by high-power fast charging is solved, achieving temperature protection and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGYUHONG ELECTRONICS (DONGGUAN) CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-07-31
AI Technical Summary
The heat accumulation problem caused by high-power fast charging results in a large internal temperature gradient and high temperature of local hot spots in the charger, which affects the life of components and poses safety hazards.
Design a fast charger housing structure with temperature protection, using four symmetrically distributed cooling fans and heat conduction strips to achieve temperature control through gas flow and heat conduction, combined with a filter ring for gas filtration and dust removal.
It effectively reduces the internal temperature of the charger, prevents heat accumulation, ensures the safety and lifespan of components, and achieves temperature protection.
Smart Images

Figure CN224582898U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fast charger technology, specifically relating to a fast charger housing structure with temperature protection. Background Technology
[0002] With the rapid iteration of mobile electronic devices, fast charging technology has become a core development direction in the charger industry. Current mainstream fast charging solutions have achieved output power of 60W-120W, and the application of wide-bandgap semiconductor devices such as gallium nitride (GaN) has further increased the charger power density to 1.8W / cm². 3 That's all. However, the problem of heat accumulation caused by high-power fast charging is becoming increasingly prominent: experimental data shows that under fast charging conditions above 25W, the internal temperature gradient of the charger can reach 45-65℃ / cm². 2 Local hotspot temperatures may exceed the 90°C threshold, which not only affects the lifespan of components such as electrolytic capacitors, but also poses a safety hazard of thermal runaway. Utility Model Content
[0003] Purpose of utility model
[0004] To address the aforementioned technical problems, this utility model provides a fast charger housing structure with temperature protection, thereby solving the technical problems mentioned in the background art.
[0005] Technical solution
[0006] To achieve the above objectives, the present invention provides a fast charger housing structure with temperature protection, comprising a charger housing, ventilation slots on both sides of the charger housing, an equipment compartment inside the charger housing, an mounting plate between the charger housing and the equipment compartment, a cooling fan rotatably connected inside the mounting plate, and four cooling fans symmetrically distributed on both sides of the vertical center line of the charger housing.
[0007] Preferably, a plug body is provided on one side of the charger housing, and a charging cable is provided on the other side of the charger housing. The charging cable and the plug body are electrically connected to the device compartment.
[0008] Preferably, heat-conducting strips are provided on both sides of the device compartment, and the number of heat-conducting strips is set to multiple, with the multiple heat-conducting strips symmetrically distributed on both sides of the charger housing.
[0009] Preferably, the outer wall of the charger housing is provided with a side shell, the inside of the side shell is provided with a placement groove, a filter ring is rotatably connected to the inside of the charger housing and the side shell, and a limit strip is provided on the inner wall of the charger housing, the outer wall of the limit strip is in contact with the outer wall of the filter ring.
[0010] Preferably, the four corners of the inner wall of the charger housing are arc-shaped, and the inner wall of the charger housing fits against the outer wall of the filter ring.
[0011] Beneficial effects
[0012] The technical solution provided by this utility model has the following advantages compared with the prior art:
[0013] This invention separates the charger housing and the device compartment. During operation inside the device compartment, a cooling fan on one side sends external air into the space between the charger housing and the device compartment. The air contacts the heat-conducting strip to cool the device compartment. The cooling fan on the other side exhausts the internal air, thus preventing the charger from overheating during use and achieving temperature protection. At the same time, the incoming air can be filtered through a filter ring. Attached Figure Description
[0014] Figure 1 This is a perspective view of the present utility model;
[0015] Figure 2 This is a three-dimensional cross-sectional view of the present invention;
[0016] Figure 3 This is a three-dimensional cross-sectional view of the present invention;
[0017] Figure 4 This is a three-dimensional view of the filter ring of this utility model.
[0018] Figure Labels
[0019] 1. Charger housing; 2. Side housing; 3. Filter ring; 4. Ventilation groove; 5. Limiting strip; 6. Equipment compartment; 7. Heat conduction strip; 8. Plug body; 9. Charging cable; 10. Mounting plate; 11. Cooling fan; 12. Placement slot. Detailed Implementation
[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", "coaxial", "bottom", "one end", "top", "other end", "one side", "front", "both ends", "both sides", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0021] 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.
[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0023] Referring now to the accompanying drawings, the various figures are intended only to illustrate certain exemplary embodiments and are not intended to limit the scope of the invention. In the various figures, the same reference numerals denote the same or corresponding parts. The dimensions and scales in the various figures are also for illustrative purposes only and should not be construed as limiting the scope of the invention; these dimensions may be enlarged relative to actual products.
[0024] Reference Figure 1-3The diagram illustrates a fast charger housing structure with temperature protection, comprising a charger housing 1. Ventilation slots 4 are provided on both sides of the charger housing 1. A device compartment 6 is located inside the charger housing 1. A mounting plate 10 is positioned between the charger housing 1 and the device compartment 6. Four cooling fans 11 are rotatably connected inside the mounting plate 10, symmetrically distributed on both sides of the vertical center line of the charger housing 1. A plug body 8 is located on one side of the charger housing 1, and a charging cable 9 is located on the other side. The charging cable 9 and the plug body 8 are electrically connected to the device compartment 6. Heat-conducting strips 7 are provided on both sides of the device compartment 6. The quantity is set to multiple, and the multiple heat-conducting strips 7 are symmetrically distributed on both sides of the charger housing 1. When the fast charger is needed, a temperature sensor is set on the inner side of the charger housing 1. When the device compartment 6 generates high heat during operation, the temperature sensor detects the temperature rise and starts the cooling fan 11. The cooling fan 11 on one side of the charger housing 1 introduces external gas, and the cooling fan 11 on the other side exhausts the gas. The gas entering and exiting will be filtered by the filter ring 3. Then the gas enters between the charger housing 1 and the device compartment 6, and the heat-conducting strips 7 exhaust the heat inside the device compartment 6. During the gas flow between the charger housing 1 and the device compartment 6, the heat inside the device compartment 6 is carried away, avoiding the accumulation of heat inside the device compartment 6.
[0025] Furthermore, in the above technical solution, the outer wall of the charger housing 1 is provided with a side housing 2, and the inside of the side housing 2 is provided with a placement groove 12. A filter ring 3 is rotatably connected inside the charger housing 1 and the side housing 2. The inner wall of the charger housing 1 is provided with a limiting strip 5, and the outer wall of the limiting strip 5 is in contact with the outer wall of the filter ring 3. The four corners of the inner wall of the charger housing 1 are arc-shaped. The inner wall of the charger housing 1 is in contact with the outer wall of the filter ring 3. Gas will pass through the filter ring 3 for both entry and exit. When the surface of the filter ring 3 is blocked by dust, a hand can be inserted into the placement groove 12 to contact the filter ring 3, and then the filter ring 3 can be pushed to rotate on the inner wall of the charger housing 1. Then the air outlet and air inlet positions of the filter ring 3 can be switched, so that the discharged gas can clean the dust attached to the surface of the filter ring 3.
[0026] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A fast charger case structure with temperature protection, characterized by, include The charger housing (1) has ventilation slots (4) on both sides. The charger housing (1) has an equipment compartment (6) inside. An installation plate (10) is provided between the charger housing (1) and the equipment compartment (6). A cooling fan (11) is rotatably connected inside the installation plate (10). The number of cooling fans (11) is set to four, and the four cooling fans (11) are symmetrically distributed on both sides of the vertical center line of the charger housing (1).
2. The fast charger housing structure with temperature protection of claim 1, wherein: A plug body (8) is provided on one side of the charger housing (1), and a charging cable (9) is provided on the other side of the charger housing (1). The charging cable (9) and the plug body (8) are electrically connected to the device compartment (6).
3. The fast charger housing structure with temperature protection of claim 1, wherein: Heat-conducting strips (7) are provided on both sides of the device compartment (6). The number of heat-conducting strips (7) is set to multiple, and the multiple heat-conducting strips (7) are symmetrically distributed on both sides of the charger housing (1).
4. The fast charger housing structure with temperature protection of claim 1, wherein: The charger housing (1) has a side housing (2) on its outer wall. The side housing (2) has a placement groove (12) inside. The charger housing (1) and the side housing (2) are rotatably connected to a filter ring (3). The charger housing (1) has a limit strip (5) on its inner wall. The outer wall of the limit strip (5) is in contact with the outer wall of the filter ring (3).
5. The fast charger housing structure with temperature protection of claim 1, wherein: The four corners of the inner wall of the charger housing (1) are arc-shaped, and the inner wall of the charger housing (1) is attached to the outer wall of the filter ring (3).