Transformer cooling structure of mobile phone charger

Abstract

The utility model relates to a transformer cooling structure of mobile phone charger, including the casing, is set up in the containing cavity who has the cavity for installing PCB in the casing, the heat exchange cover is set up in the containing cavity, the bottom of heat exchange cover is set up the containing groove for containing transformer, the top of heat exchange cover is set up the through -hole with containing groove intercommunication, the space of containing groove is greater than the volume of transformer, makes and remains the space for filling the heat exchange material between containing groove and transformer. The utility model relates to the technical field of mobile phone charger. This transformer cooling structure of mobile phone charger can be used for improving the heat exchange efficiency of transformer, thereby improving the cooling effect to transformer, and by filling the heat exchange material in the heat exchange cover, the air gap between the heat exchange cover and the transformer can be reduced, the heat conduction efficiency can be further improved, thereby making the heat dissipation effect of the heat exchange cover more outstanding, thereby effectively ensuring the stability of the mobile phone charger.

Description

Technical Field

[0001] This utility model relates to the technical field of mobile phone chargers, and in particular to a transformer cooling structure for a mobile phone charger. Background Technology

[0002] The transformer in a mobile phone charger primarily uses switching power supply technology to achieve voltage conversion and current regulation. Compared to traditional linear transformers, modern mobile phone chargers use high-frequency transformers, which makes the charger smaller and lighter.

[0003] In existing technology, transformers inevitably experience some current loss during operation, leading to heat generation in the transformer components. As the power of mobile phone chargers increases, the heat generated by the transformer also increases accordingly, causing the phone charger to overheat under high load, affecting its usability, and in severe cases, even damaging the charger. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a transformer cooling structure for a mobile phone charger, so as to solve the technical problems mentioned in the background.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A transformer cooling structure for a mobile phone charger includes a housing with a cavity inside for mounting a PCB.

[0007] The heat exchange shroud is set inside the receiving cavity. The bottom of the heat exchange shroud has a receiving groove for accommodating the transformer, and the top of the heat exchange shroud has a through hole communicating with the receiving groove. The space of the receiving groove is larger than the volume of the transformer, so that there is space between the receiving groove and the transformer for filling heat exchange material.

[0008] The mounting plate is connected to the outer edge of the bottom of the heat exchange shroud, and mounting holes are spaced apart along the circumference of the mounting plate.

[0009] Furthermore, a square groove is provided on the outer wall of the shell, and a heat-conducting plate is fixedly connected in the square groove. The bottom of the heat-conducting plate is in contact with the heat exchange cover through a heat-conducting column.

[0010] Furthermore, the outer wall of the heat-conducting sheet smoothly transitions to the surface of the housing, and a sealing strip is fixedly connected between the inner wall of the square groove and the heat-conducting sheet.

[0011] Furthermore, a positioning groove is formed in the recessed top of the heat exchange cover, and the bottom end of the heat-conducting column extends into the positioning groove.

[0012] Furthermore, a support rib for supporting the PCB is fixedly connected to the bottom of the housing, and a buffer pad is fixedly connected to the top of the support rib.

[0013] Furthermore, it also includes heat dissipation fins connected to the outer wall of the heat exchange shroud. Multiple heat dissipation fins are provided and are connected to the outer wall of the heat exchange shroud at intervals.

[0014] In summary, this utility model has at least one of the following beneficial technical effects:

[0015] 1. The transformer cooling structure of this mobile phone charger, by setting a heat exchange cover, can improve the heat exchange efficiency of the transformer, thereby improving the cooling effect of the transformer. By filling the heat exchange cover with heat exchange material, the air gap between the heat exchange cover and the transformer can be reduced, which can further improve the heat conduction efficiency, thereby making the heat dissipation effect of the heat exchange cover more outstanding, thus effectively ensuring the stability of the mobile phone charger.

[0016] 2. The transformer cooling structure of this mobile phone charger, by connecting heat-conducting plates to the shell and having the heat-conducting plates contact the heat exchange cover through heat-conducting columns, can conduct heat to the outside through the heat-conducting columns and heat-conducting plates, which can effectively ensure the stable cooling effect of the heat exchange cover on the transformer and further improve the practicality of the transformer cooling structure. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the transformer cooling structure of a mobile phone charger according to the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of a transformer cooling structure for a mobile phone charger according to the present invention.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 This is a schematic diagram of the heat exchange cover in the transformer cooling structure of a mobile phone charger according to this utility model.

[0022] Figure 5 This is a schematic diagram of the right-side view of the receiving cavity in the transformer cooling structure of a mobile phone charger according to the present invention.

[0023] In the diagram, 1 is the shell; 2 is the heat exchange cover; 3 is the mounting plate; 4 is the receiving cavity; 5 is the receiving groove; 6 is the through hole; 7 is the heat exchange material; 8 is the mounting hole; 9 is the square groove; 10 is the heat-conducting fin; 11 is the heat-conducting column; 12 is the sealing strip; 13 is the positioning groove; 14 is the support rib; 15 is the buffer pad; and 16 is the heat dissipation fin. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Example: Refer to Figure 1 - Figure 5 The present invention discloses a transformer cooling structure for a mobile phone charger, including a housing 1, and a receiving cavity 4 for mounting a PCB is provided inside the housing 1.

[0026] The heat exchange cover 2 is set inside the receiving cavity 4. The bottom of the heat exchange cover 2 is provided with a receiving groove 5 for accommodating the transformer, and the top of the heat exchange cover 2 is provided with a through hole 6 communicating with the receiving groove 5. The space of the receiving groove 5 is larger than the volume of the transformer, so that there is space between the receiving groove 5 and the transformer for filling the heat exchange material 7.

[0027] Mounting plate 3 is connected to the outer edge of the bottom of heat exchange cover 2, and mounting holes 8 are spaced apart along the circumference of mounting plate 3.

[0028] In this embodiment, observation Figure 1 and Figure 2 It can be seen that by setting up a housing 1, and having a receiving cavity 4 inside the housing 1, it can be used to hold the PCB of the mobile phone charger, thus achieving the effect of protecting the PCB.

[0029] Subsequently combined Figure 2 and Figure 5 It can be observed that a heat exchange cover 2 is installed inside the receiving cavity 4, and a receiving groove 5 is opened inside the heat exchange cover 2, which can cover the outside of the transformer on the PCB to cool the transformer. Further observation is needed to improve the heat dissipation effect of the heat exchange cover 2. Figure 5 It can be observed that the space of the receiving tank 5 is larger than the volume of the transformer, leaving space between the receiving tank 5 and the transformer for filling the heat exchange material 7. At the same time, a through hole 6 communicating with the receiving tank 5 is opened on the top of the heat exchange cover 2. After the heat exchange cover 2 covers the outside of the transformer, the heat exchange material 7 is injected into the receiving tank 5 through the through hole 6, so that the heat exchange material 7 can fill the gap of the transformer, so that there is no air gap between the transformer and the heat exchange cover 2. At this time, the heat generated by the transformer will be conducted to the heat exchange cover 2 through the heat exchange material 7, so that the heat exchange cover 2 can quickly dissipate the heat into the air, which can effectively improve the heat dissipation effect of the transformer.

[0030] Finally, in order to ensure a stable connection between the heat exchanger shroud 2 and the transformer, combined with Figure 4 and Figure 5 As can be seen, a mounting plate 3 is connected to the outside of the heat exchange cover 2. Mounting holes 8 are spaced apart along the perimeter of the mounting plate 3. The mounting plate 3 can be stably connected to the PCB by means of bolts, clips, etc., by setting corresponding positioning holes on the PCB, thereby effectively ensuring the stable connection between the heat exchange cover 2 and the transformer.

[0031] Among them, the heat exchange material 7 mentioned above is a highly thermally conductive and insulating thermal grease, such as those from brands like Shin-Etsu and Limin that are readily available on the market.

[0032] In a further preferred embodiment of this utility model, such as Figure 2 - Figure 4 As shown, a square groove 9 is provided on the outer wall of the shell 1, and a heat-conducting plate 10 is fixedly connected in the square groove 9. The bottom of the heat-conducting plate 10 is in contact with the heat exchange cover 2 through a heat-conducting column 11.

[0033] The outer wall of the heat-conducting sheet 10 smoothly transitions to the surface of the housing 1, and a sealing strip 12 is fixedly connected between the inner wall of the square groove 9 and the heat-conducting sheet 10.

[0034] The top of the heat exchange cover 2 is recessed to form a positioning groove 13, and the bottom end of the heat-conducting column 11 extends into the positioning groove 13.

[0035] In this embodiment, since mobile phone chargers are usually waterproof, the gaps between the shells 1 are glued together tightly. This means that the heat exchange cover 2 can only transfer heat into the receiving cavity 4. As a result, when the mobile phone charger is used for a long time, the temperature inside the receiving cavity 4 gradually increases, which makes the cooling effect of the subsequent transformer worse.

[0036] Therefore, observe Figure 2 It can be seen that a square groove 9 is provided on the outer wall of the housing 1, and a heat-conducting plate 10 is fixedly connected in the square groove 9. The bottom of the heat-conducting plate 10 contacts the heat exchange cover 2 through the heat-conducting column 11. The heat of the heat exchange cover 2 can be conducted out through the heat-conducting column 11, and finally the heat is dissipated into the outside air through the heat-conducting plate 10. This can effectively ensure that the mobile phone charger can still provide stable heat dissipation for the transformer when it is used for a long time.

[0037] Due to limitations in material processing precision, numerous tiny gaps exist at the microscopic level of the contact surface between the heat-conducting pillar 11 and the heat exchange cover 2. This affects the heat conduction efficiency. Therefore, observation... Figure 4It can be observed that a positioning groove 13 is formed in the concave top of the heat exchange cover 2, and the bottom end of the heat-conducting column 11 extends into the positioning groove 13. At this time, it is only necessary to add a little more heat exchange material 7 when injecting heat exchange material 7 into the receiving groove 5, so that a little heat exchange material 7 overflows. When the heat-conducting column 11 is pressed into the positioning groove 13, the overflowing little heat exchange material 7 will fill the gap between the heat-conducting column 11 and the positioning groove 13, thereby further improving the heat dissipation effect on the transformer.

[0038] Finally, since the square groove 9 is provided on the casing 1, this will affect the waterproof performance of the phone charger, therefore observation is needed. Figure 3 It can be seen that the outer wall of the heat-conducting sheet 10 is smoothly connected to the surface of the shell 1, and a sealing strip 12 is fixedly connected between the inner wall of the square groove 9 and the heat-conducting sheet 10. This ensures that there are no uneven surfaces affecting the feel when the mobile phone charger is in use, while also ensuring a sealing effect, which can effectively improve the practicality of the mobile phone charger.

[0039] In a further preferred embodiment of this utility model, such as Figure 2 As shown, the bottom of the housing 1 is fixedly connected to a support rib 14 for supporting the PCB, and the top of the support rib 14 is fixedly connected to a buffer pad 15.

[0040] In this embodiment, by providing a support rib 14 for supporting the PCB at the bottom of the housing 1, the support rib 14 can provide support for the PCB when the heat-conducting column 11 presses down on the heat exchange cover 2, preventing the PCB from bending and affecting the connection stability between the heat-conducting column 11, the heat exchange cover 2, and the PCB. Furthermore, to prevent the PCB from being damaged, Figure 2 It can also be seen that the top of the support rib 14 is fixedly connected with a buffer pad 15, which can effectively improve the protection of the PCB.

[0041] In a further preferred embodiment of this utility model, such as Figure 4 As shown, it also includes heat dissipation fins 16, which are connected to the outer wall of the heat exchange cover 2. Multiple heat dissipation fins 16 are provided, and multiple heat dissipation fins 16 are connected to the outer wall of the heat exchange cover 2 at intervals.

[0042] In this embodiment, by providing multiple heat dissipation fins 16 on the outer wall of the heat exchange cover 2, the efficiency of heat exchange between the heat dissipated by the heat exchange cover 2 and the air in the containment cavity 4 can be accelerated, thereby further improving the cooling effect on the transformer.

[0043] The implementation principle of the above embodiment is as follows: the heat exchange cover 2 is installed together with the PCB through the mounting plate 3, and then the heat exchange material 7 is filled into the receiving groove 5 through the through hole 6 at the top of the heat exchange cover 2. Finally, the PCB is installed into the housing 1. When installing the PCB, the heat exchange cover 2 needs to be connected with the heat conduction column 11 to realize the installation of the mobile phone charger.

[0044] When the mobile phone charger is in use, the heat generated by the transformer is conducted to the heat exchange cover 2 by the heat exchange material 7. The heat exchange cover 2 then dissipates the heat through the heat dissipation fins 16 and the heat conduction column 11 to achieve stable cooling of the transformer.

[0045] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A transformer cooling structure for a mobile phone charger, characterized in that, It includes a housing (1), and the housing (1) has a cavity (4) for mounting the PCB. The heat exchange hood (2) is set inside the receiving cavity (4). The bottom of the heat exchange hood (2) is provided with a receiving groove (5) for accommodating the transformer. The top of the heat exchange hood (2) is provided with a through hole (6) communicating with the receiving groove (5). The space of the receiving groove (5) is larger than the volume of the transformer, so that there is space between the receiving groove (5) and the transformer for filling the heat exchange material (7). Mounting plate (3) is connected to the outer edge of the bottom of heat exchange cover (2), and mounting holes (8) are provided at intervals along the circumference of mounting plate (3).

2. The transformer cooling structure for a mobile phone charger according to claim 1, characterized in that, The outer wall of the shell (1) is provided with a square groove (9), and a heat-conducting plate (10) is fixedly connected in the square groove (9). The bottom of the heat-conducting plate (10) is in contact with the heat exchange cover (2) through a heat-conducting column (11).

3. The transformer cooling structure for a mobile phone charger according to claim 2, characterized in that, The outer wall of the heat-conducting plate (10) is smoothly connected to the surface of the housing (1), and a sealing strip (12) is fixedly connected between the inner wall of the square groove (9) and the heat-conducting plate (10).

4. The transformer cooling structure for a mobile phone charger according to claim 3, characterized in that, The top of the heat exchange cover (2) is recessed to form a positioning groove (13), and the bottom end of the heat-conducting column (11) extends into the positioning groove (13).

5. The transformer cooling structure for a mobile phone charger according to claim 4, characterized in that, The bottom of the housing (1) is fixedly connected to a support rib (14) for supporting the PCB, and the top of the support rib (14) is fixedly connected to a buffer pad (15).

6. The transformer cooling structure for a mobile phone charger according to claim 5, characterized in that, It also includes heat dissipation fins (16) which are connected to the outer wall of the heat exchange cover (2). Multiple heat dissipation fins (16) are provided, and multiple heat dissipation fins (16) are connected to the outer wall of the heat exchange cover (2) at intervals.

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