Heat dissipation structure of mobile phone charging head

Abstract

The utility model provides a heat dissipation structure of a mobile phone charging head, which comprises an outer shell, a power connection piece and a power connection head, the power connection piece is fixed on the left side of the outer shell, the power connection head is fixed on the right side of the outer shell, supporting legs are fixed in the outer shell, a circuit board is tightly attached to the upper portions of the supporting legs, and an induced draft fan is fixed on the upper portion in the outer shell. Inner heat dissipation plates are embedded in the front and rear ends of the outer sides of the power connection pieces, air inlet pipes are fixed to the tops of the two inner heat dissipation plates, an upper exhaust head and a lower exhaust head are fixed to the upper and lower ends of the sides, close to the middle of the circuit board, of the inner heat dissipation plates correspondingly, an exhaust pipe is fixed to the right side in the outer shell, and an outer heat dissipation plate is fixed to the left side of the outer shell. According to the utility model, during the charging process, the upper and lower ends of the circuit board and the power connection sheet can be cooled at the same time, so that the charging head can be effectively prevented from being in an overheat state during working, and the service life of the charging head is further prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a heat dissipation structure for a mobile phone charger. Background Technology

[0002] Mobile phone chargers can be broadly categorized into travel chargers, desktop chargers, and maintenance chargers. Most users are familiar with the first two types, while travel chargers are the most commonly sold on the market. Travel chargers come in various forms, including inexpensive egg-shaped mini travel chargers, standard desktop card-type chargers, and high-end desktop chargers with LCD displays. Currently, when a mobile phone charger is charging, electrical energy is transferred to the battery through the connectors. During the process of converting AC to DC, the current passing through the transformer's internal coil generates a magnetic field. Changes in this magnetic field induce a current in the secondary coil. This process results in energy loss, which is converted into heat. However, current chargers cannot quickly dissipate this heat during use, causing the charger to remain overheated for extended periods, further reducing its lifespan. Utility Model Content

[0003] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and to propose a heat dissipation structure for a mobile phone charging head.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A heat dissipation structure for a mobile phone charger includes a housing, a contact plate, and a connector. The contact plate is fixed to the left side of the housing, and the connector is fixed to the right side of the housing. A support foot is fixed inside the housing, and a circuit board is attached to the top of the support foot. A fan is fixed to the upper part of the inside of the housing. Inner heat dissipation plates are nested at the front and rear ends of the outer side of the contact plate. An air inlet pipe is fixed to the top of each of the two inner heat dissipation plates. An upper exhaust head and a lower exhaust head are fixed to the upper and lower ends of the inner heat dissipation plates near the middle of the circuit board, respectively. An exhaust pipe is fixed to the right side of the inside of the housing, and an outer heat dissipation plate is fixed to the left side of the housing.

[0006] Preferably, the two inner heat sinks are symmetrically arranged around the transverse central axis of the circuit board, and the interior of the inner heat sinks is connected to the exhaust end of the induced draft fan through an air inlet pipe.

[0007] Preferably, the interior of the inner heat sink is hollow, and the exhaust ends of the upper and lower exhaust heads are connected to the interior of the inner heat sink.

[0008] Preferably, the angle between the upper exhaust head and the lower exhaust head and the inner heat sink is 35-45°, and the upper exhaust head and the lower exhaust head are symmetrically arranged at the upper and lower ends of the inner heat sink.

[0009] Preferably, the contact plate is fixed to the left side of the outer heat sink through the outer heat sink plate, the interior of the outer heat sink plate is hollow, and the exhaust pipe is connected to the lower interior of the outer heat sink plate and the outer shell plate respectively.

[0010] Preferably, the front and rear ends of the left side of the external heat sink are provided with vent holes, and the included angle between the vent holes and the connector is 45°.

[0011] 1. During the charging process, the fan draws external airflow into the inner heat sink through the air intake pipe. Since the circuit board is located at the front and rear ends of the inner heat sink, the airflow is discharged from the inclined upper and lower exhaust heads on the upper and lower ends of the inner heat sink due to air pressure, blowing towards the upper and lower ends of the circuit board. This achieves simultaneous heat dissipation and cooling of the upper and lower ends of the circuit board, reducing the heat dissipation dead zones of the circuit board. With fewer heat dissipation dead zones, the service life of the charging head is further improved.

[0012] 2. After the airflow blows towards the top and bottom of the circuit board, it enters the exhaust pipe on the left side of the outer casing, and then enters the outer heat sink along the exhaust pipe. Due to the air pressure, it is discharged along the inclined exhaust holes at the front and rear ends of the outer heat sink and blows towards the contact plate, thereby achieving rapid heat dissipation of the contact plate and preventing overheating when the contact plate is inserted into the socket for power connection, which further improves the service life of the charging head. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a front cross-sectional view of the overall structure of this utility model;

[0015] Figure 3 This is a schematic cross-sectional view of the upper surface of the overall structure in this utility model;

[0016] Figure 4 This is a partial structural diagram of the internal heat dissipation plate in this utility model.

[0017] Legend:

[0018] The outer casing 1, the electrical connector 101, the electrical connector 102, the support foot 103, the circuit board 104, the exhaust fan 105, the inner heat sink 2, the air inlet pipe 201, the upper exhaust head 202, the lower exhaust head 203, the exhaust pipe 204, and the outer heat sink 205. Detailed Implementation

[0019] Example 1, referring to Figure 1-4 A heat dissipation structure for a mobile phone charger includes a housing 1, a contact plate 101, and a contact head 102. The contact plate 101 is fixed on the left side of the housing 1, and the contact head 102 is fixed on the right side of the housing 1. A support foot 103 is fixed inside the housing 1, and a circuit board 104 is attached to the top of the support foot 103. A fan 105 is fixed on the upper part of the inside of the housing 1. Inner heat dissipation plates 2 are nested at the front and rear ends of the outer side of the contact plate 101. An air inlet pipe 201 is fixed on the top of each of the two inner heat dissipation plates 2. An upper exhaust head 202 and a lower exhaust head 203 are fixed at the upper and lower ends of the inner heat dissipation plate 2 near the middle of the circuit board 104, respectively. An exhaust pipe 204 is fixed on the right side of the inside of the housing 1, and an outer heat dissipation plate 205 is fixed on the left side of the housing 1.

[0020] Two internal heat dissipation plates 2 are symmetrically arranged around the transverse central axis of the circuit board 104, and the interior of the internal heat dissipation plates 2 is connected to the exhaust end of the induced draft fan 105 through the air inlet pipe 201.

[0021] During the charging process, the fan 105 operates to introduce external airflow into the inner heat dissipation plate 2 through the air intake pipe 201;

[0022] The interior of the inner heat sink 2 is hollow, and the exhaust ends of the upper exhaust head 202 and the lower exhaust head 203 are connected to the interior of the inner heat sink 2.

[0023] The angle between the upper exhaust head 202 and the lower exhaust head 203 and the inner heat sink 2 is 35-45°. The upper exhaust head 202 and the lower exhaust head 203 are symmetrically arranged at the upper and lower ends of the inner heat sink 2.

[0024] When the airflow enters the inner heat sink 2, the airflow will be discharged from the upper exhaust head 202 and lower exhaust head 203 at the upper and lower ends of the inner heat sink 2 due to the air pressure, and blow towards the upper and lower ends of the circuit board 104, so as to achieve simultaneous heat dissipation and cooling of the upper and lower ends of the circuit board 104, reducing the heat dissipation dead zone of the circuit board 104, and further improving the service life of the charging head.

[0025] Example 2 differs from Example 1 in that, in this example, the contact plate 101 passes through the outer heat sink 205 and is fixed to the left side of the outer shell 1. The interior of the outer heat sink 205 is hollow, and the exhaust pipe 204 is connected to the lower interior of the outer heat sink 205 and the lower interior of the outer shell 1, respectively.

[0026] The front and rear ends of the left side of the external heat sink 205 are provided with vent holes, and the included angle between the vent holes and the connector 102 is 45°.

[0027] When the airflow is discharged from the inclined exhaust port, it will blow directly onto the contact plate 101 to quickly dissipate heat from the contact plate 101.

[0028] After the airflow blows towards the upper and lower ends of the circuit board 104, it enters the exhaust pipe 204 on the left side of the outer casing 1, and enters the outer heat sink 205 along the exhaust pipe 204. Then, due to the air pressure, it is discharged along the inclined exhaust holes at the front and rear ends of the outer heat sink 205 and blows towards the contact piece 101, thereby achieving rapid heat dissipation of the contact piece 101, preventing the contact piece 101 from overheating when it is inserted into the socket for power connection, and further improving the service life of the charging head.

[0029] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A heat dissipation structure for a mobile phone charger, comprising a housing (1), a contact plate (101), and a contact head (102), wherein the contact plate (101) is fixed on the left side of the housing (1), and the contact head (102) is fixed on the right side of the housing (1), characterized in that, The outer shell (1) is fixed with a support foot (103) inside. A circuit board (104) is attached to the upper part of the support foot (103). A fan (105) is fixed inside the upper part of the outer shell (1). The front and rear ends of the outer side of the electrical contact plate (101) are nested with inner heat dissipation plates (2). An air inlet pipe (201) is fixed to the top of the two inner heat dissipation plates (2). An upper exhaust head (202) and a lower exhaust head (203) are fixed to the upper and lower ends of the inner heat dissipation plate (2) on the side near the middle of the circuit board (104). An exhaust pipe (204) is fixed to the right side of the inner shell (1). An outer heat dissipation plate (205) is fixed to the left side of the outer shell (1).

2. The heat dissipation structure of the mobile phone charger according to claim 1, characterized in that, The two inner heat sinks (2) are symmetrically arranged around the transverse central axis of the circuit board (104), and the interior of the inner heat sinks (2) is connected to the exhaust end of the fan (105) through the air inlet pipe (201).

3. The heat dissipation structure of the mobile phone charger according to claim 1, characterized in that, The interior of the inner heat sink (2) is hollow, and the exhaust ends of the upper exhaust head (202) and the lower exhaust head (203) are connected to the interior of the inner heat sink (2).

4. The heat dissipation structure of the mobile phone charger according to claim 1, characterized in that, The angle between the upper exhaust head (202) and the lower exhaust head (203) and the inner heat sink (2) is 35-45°. The upper exhaust head (202) and the lower exhaust head (203) are symmetrically arranged at the upper and lower ends of the inner heat sink (2).

5. The heat dissipation structure of the mobile phone charger according to claim 1, characterized in that, The contact plate (101) passes through the outer heat sink (205) and is fixed on the left side of the outer shell (1). The outer heat sink (205) is hollow inside. The exhaust pipe (204) is connected to the lower part of the outer heat sink (205) and the inner part of the outer shell (1).

6. The heat dissipation structure of the mobile phone charger according to claim 1, characterized in that, The front and rear ends of the left side of the external heat sink (205) are provided with vent holes, and the included angle between the vent holes and the electrical connector (102) is 45°.

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