Step-down transformer with reverse connection protection

Abstract

The utility model provides a step-down transformer with reverse connection protection. The step-down transformer with the reverse connection protection function comprises a box body, a transformer is fixedly installed in the box body, an air switch is fixedly installed at the top of an inner cavity of the box body, the top of the air switch is movably sleeved with an overturning column, and the top of the box body is fixedly sleeved with a protective cover. According to the step-down transformer with reverse connection protection provided by the utility model, through arranging the air switch, when the storage battery is charged and electrode connection is carried out, the output end wire of the air switch is connected with the electrode end of the storage battery, so that when the output end wire of the air switch is reversely connected with the electrode of the storage battery, the air switch is connected with the storage battery. When the step-down transformer is used, the air switch can cut off the internal circuit, that is, the internal current of the wire is cut off, so that the problem that the step-down transformer is damaged due to the fact that the internal temperature of the step-down transformer rises rapidly when the circuit of the step-down transformer is reversely connected is solved, and the protection effect of the step-down transformer in use is improved.

Description

Technical Field

[0001] The utility model relates to the field of voltage reducers, in particular to a voltage reducer with reverse connection protection. Background Art

[0002] Mobile power supplies are generally equipped with a variety of power adapters. They have the characteristics of large capacity, multi-purpose, small size, long life, safety and reliability. They are functional products that can power or charge a variety of digital products such as mobile phones, digital cameras, MP3, MP4, PDA, handheld computers, handheld game consoles, etc. anytime and anywhere. Buck-type mobile power supplies are more reliable than boost-type mobile power supplies and are less prone to failure. However, the buck converters currently used for mobile power supplies on the market are easily damaged when hit, resulting in the mobile power supply being unusable due to chip and port damage.

[0003] In the existing technology, such as the "A buck converter for mobile power supply" with Chinese authorization announcement number: CN209627032U, it includes a shell, which is vertically arranged and has a through hole on the upper end face; the lower cover is installed at the lower end of the through hole, and the side surface is connected to the lower end of the inner wall of the shell by glue; the battery is installed in the through hole, and the lower end face is fitted with the lower cover; the buck converter is arranged directly above the battery, and the left end is connected to the inner wall of the shell by glue; the upper cover is arranged at the upper end of the buck converter, and the side surface is connected to the upper end of the inner wall of the through hole by glue; the left ends of the output port and the input port are respectively welded with elastic elements, and the left ends of the two elastic elements are welded to the right end face of the buck converter; the output port and the input port are connected to the buck converter through wires; the upper cover is provided with an output through hole for installing the output port and an input through hole for installing the input port; the upper end of the output port is installed in the output through hole; the upper end of the input port is installed in the output port.

[0004] The utility model effectively solves the problem that the buck converter is not resistant to falling

[0005] In the prior art, when charging the power supply, since most power supply electrodes have the same shape, reverse connection is easily caused when the power supply electrodes are connected to the converter electrodes, thereby causing the converter to be short-circuited and damaged.

[0006] Therefore, it is necessary to provide a voltage reducer with reverse connection protection to solve the above technical problems. Utility Model Content

[0007] The utility model provides a voltage reducer with reverse connection protection, which solves the problem that since most power supply electrodes have the same shape, reverse connection is easy to occur when the power supply electrodes are connected to converter electrodes, thereby causing short circuit damage to the converter.

[0008] To solve the above technical problems, the utility model provides a step-down voltage converter with reverse connection protection, comprising a box body, a transformer fixedly installed inside the box body, an air switch fixedly installed on the top of the inner cavity of the box body, a flip column movably sleeved on the top of the air switch, a protective cover fixedly sleeved on the top of the box body, a moisture-proof plate fixedly connected to the bottom of the inner cavity of the box body, a heat conduction mechanism is provided on the side of the transformer, a heat dissipation mechanism is provided on the side of the inner wall of the box body, a filter cover is fixedly sleeved on one side of the box body, a connecting mechanism is provided on the other side of the box body, and a support column is fixedly connected to the bottom of the box body.

[0009] Preferably, the air switch is located below the protective cover, and an input end of the air switch is electrically connected to an output end of the transformer.

[0010] Preferably, the protective cover is movably sleeved on the outside of the flip column, and the material of the protective cover is organic glass material.

[0011] Preferably, the moisture-proof board is made of natural fiber material, and the moisture-proof board is in close contact with the bottom of the transformer.

[0012] Preferably, the heat conducting mechanism comprises a connecting plate, the connecting plate is fixedly connected to a side surface of the transformer, a heat conducting plate is fixedly connected to the side surface of the connecting plate, and the heat conducting plate is made of metal aluminum material.

[0013] Preferably, the heat dissipation mechanism comprises a rotating motor, the rotating motor is fixedly connected to the side of the inner wall of the box body, and a fan blade is fixedly sleeved on the output shaft of the rotating motor.

[0014] Preferably, the filter cover is made of artificial fiber material, and the filter cover is located in the middle of one side of the box body.

[0015] Preferably, the connecting mechanism comprises a wire, one end of which is electrically connected to the output end of the air switch, and one end of which is fixedly connected to a conductive clip.

[0016] Preferably, the support column is made of rubber material, and there are two support columns, which are parallel to each other.

[0017] Compared with the related art, the voltage reducer with reverse connection protection provided by the utility model has the following beneficial effects:

[0018] The utility model provides a voltage reducer with reverse connection protection. By setting an air switch, when the battery is charged and the electrodes are connected, the wire at the output end of the air switch is connected to the electrode end of the battery, so that when the wire at the output end of the air switch is reversely connected to the battery electrode, the air switch can cut off the internal circuit, that is, cut off the current inside the wire, thereby avoiding the problem that the internal temperature of the voltage reducer rises rapidly when the voltage reducer circuit is reversely connected, thereby improving the protection effect of the voltage reducer when it is used;

[0019] By setting up a heat dissipation mechanism, when the internal temperature of the step-down device rises, the rotating motor is started, so that the rotating motor can drive the fan blades to rotate rapidly. At this time, the fan blades can drive the airflow inside the box to be discharged quickly to the outside of the box, thereby increasing the heat dissipation speed inside the box, thereby improving the stability of the step-down device when working for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a preferred embodiment of a voltage reducer with reverse connection protection provided by the utility model;

[0021] Figure 2 for Figure 1 A front view of a voltage reducer with reverse connection protection is shown;

[0022] Figure 3 for Figure 1 A front view of a transformer in a buck converter with reverse connection protection is shown;

[0023] Figure 4 for Figure 1 A front view of an air switch in a voltage reducer with reverse connection protection is shown.

[0024] Numbers in the figure: 1. Box; 2. Transformer; 3. Air switch; 4. Flip column; 5. Protective cover; 6. Moisture-proof plate; 7. Heat conduction mechanism; 71. Connecting plate; 72. Heat conduction plate; 8. Heat dissipation mechanism; 81. Rotating motor; 82. Fan blades; 9. Filter cover; 10. Connecting mechanism; 101. Wire; 102. Conductive clip; 11. Support column. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0026] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of a voltage reducer with reverse connection protection provided by the utility model; Figure 2 for Figure 1 A front view of a voltage reducer with reverse connection protection is shown; Figure 3 for Figure 1 A front view of a transformer in a buck converter with reverse connection protection is shown; Figure 4 for Figure 1 A front view of an air switch in a step-down transformer with reverse connection protection is shown. A step-down transformer with reverse connection protection comprises a box body 1, a transformer 2 is fixedly installed inside the box body 1, an air switch 3 is fixedly installed on the top of the inner cavity of the box body 1, a flip column 4 is movably sleeved on the top of the air switch 3, a protective cover 5 is fixedly sleeved on the top of the box body 1, a moisture-proof plate 6 is fixedly connected to the bottom of the inner cavity of the box body 1, a heat conduction mechanism 7 is arranged on the side of the transformer 2, a heat dissipation mechanism 8 is arranged on the side of the inner wall of the box body 1, a filter cover 9 is fixedly sleeved on one side of the box body 1, a connecting mechanism 10 is arranged on the other side of the box body 1, and a support column 11 is fixedly connected to the bottom of the box body 1.

[0027] The air switch 3 is located below the protective cover 5, and the input end of the air switch 3 is electrically connected to the output end of the transformer 2; by setting the air switch 3, when the electrodes are connected during battery charging, the output end wire of the air switch 3 is connected to the battery electrode end, so that when the output end wire of the air switch 3 is reversely connected to the battery electrode, the air switch 3 can cut off the internal circuit, that is, cut off the current inside the wire, thereby avoiding the problem that the internal temperature of the step-down device rises rapidly when the step-down device circuit is reversely connected, thereby causing damage to the step-down device, thereby improving the protection effect of the step-down device when it is used.

[0028] The protective cover 5 is movably sleeved on the outside of the flip column 4, and the material of the protective cover 5 is organic glass material; by setting the protective cover 5, when the step-down device is connected and used, the protective cover 5 can limit the area around the flip column 4, so as to avoid the problem that the flip column 4 is difficult to flip due to interference from foreign objects, resulting in difficulty in the operation of the air switch 3, thereby improving the working stability of the air switch 3.

[0029] The moisture-proof board 6 is made of natural fiber material, and the moisture-proof board 6 is in close contact with the bottom of the transformer 2; by setting the moisture-proof board 6, when the step-down transformer is installed and used, the moisture-proof board 6 can absorb the water vapor inside the box 1, thereby avoiding the problem of corrosion of the transformer 2 caused by the relatively humid air flow inside the box 1, thereby improving the protection effect of the transformer 2.

[0030] The heat conducting mechanism 7 includes a connecting plate 71, which is fixedly connected to the side of the transformer 2. A heat conducting plate 72 is fixedly connected to the side of the connecting plate 71, and the material of the heat conducting plate 72 is a metal aluminum material. By setting the heat conducting mechanism 7, when the internal temperature of the transformer 2 rises after working for a long time, the connecting plate 71 can absorb the heat on the surface of the transformer 2 and then diffuse it to the inside of the box 1 through the heat conducting plate 72, thereby improving the transmission speed of the heat inside the transformer 2, that is, improving the heat dissipation speed of the transformer 2.

[0031] The heat dissipation mechanism 8 includes a rotating motor 81, which is fixedly connected to the side of the inner wall of the box body 1, and a fan blade 82 is fixedly sleeved on the output shaft of the rotating motor 81; by setting the heat dissipation mechanism 8, when the internal temperature of the step-down device rises, the rotating motor 81 is started, so that the rotating motor 81 can drive the fan blade 82 to rotate rapidly, and at this time, the fan blade 82 can drive the airflow inside the box body 1 to be quickly discharged to the outside of the box body 1, thereby improving the heat dissipation speed inside the box body 1, thereby improving the stability of the step-down device when working for a long time.

[0032] The filter cover 9 is made of synthetic fiber material, and the filter cover 9 is located in the middle of one side of the box body 1; by setting the filter cover 9, when the box body 1 is dissipating heat, the filter cover 9 can filter the airflow entering the inside of the box body 1, so that the dust in the airflow can be blocked by the filter cover 9 to the outside of the box body 1, thereby improving the cleanliness of the inside of the step-down device.

[0033] The connecting mechanism 10 includes a wire 101, one end of which is electrically connected to the output end of the air switch 3, and one end of the wire 101 is fixedly connected to a conductive clip 102; by setting the connecting mechanism 10, when the step-down device is connected and used, the conductive clip 102 is clamped and fixed on the outside of the battery electrode, so that the conductive clip 102 can fix one end of the wire 101 on the outside of the battery electrode, thereby achieving the connection effect between the step-down device and the battery, thereby bringing convenience to the connection and installation of the step-down device.

[0034] The support column 11 is made of rubber material, and there are two support columns 11, which are parallel to each other. By setting the support column 11, when the voltage reducer is fixed, the support column 11 can support the box body 1, so that the box body 1 can be separated from the ground, thereby avoiding the problem of moisture vapor on the ground diffusing to the ground of the box body 1, causing corrosion of the ground of the box body 1, thereby improving the service life of the voltage reducer.

[0035] The working principle of a voltage reducer with reverse connection protection provided by the utility model is as follows:

[0036] Step 1: First, when the battery is charged and the electrodes are connected, the output wire of the air switch 3 is connected to the battery electrode end, so that when the output wire of the air switch 3 is reversely connected to the battery electrode, the air switch 3 can cut off the internal circuit, that is, cut off the current inside the wire, thereby avoiding the problem that the internal temperature of the voltage reducer rises rapidly when the voltage reducer circuit is reversed, and then the voltage reducer is damaged, thereby improving the protection effect of the voltage reducer when it is used. When the voltage reducer is connected and used, the protective cover 5 can limit the area around the flip column 4, so that the flip column 4 is prevented from being interfered with by foreign objects and difficult to flip, which makes the air switch 3 difficult to work, thereby improving the working stability of the air switch 3. When the voltage reducer is installed and used, the moisture-proof board 6 can absorb the water vapor inside the box body 1, so as to avoid the problem that the transformer 2 is corroded when the airflow inside the box body 1 is relatively humid, thereby improving the protection effect of the transformer 2. When the internal temperature of the transformer 2 rises after working for a long time, the connecting plate 71 can absorb the heat on the surface of the transformer 2 and then diffuse it to the inside of the box body 1 through the heat conducting plate 72, thereby improving the transmission speed of the heat inside the transformer 2, that is, improving the heat dissipation speed of the transformer 2. When the internal temperature of the step-down device rises, the rotating motor 81 is started, so that the rotating motor 81 can drive the fan blades 82 to rotate rapidly. At this time, the fan blades 82 can drive the airflow inside the box body 1 to be quickly discharged to the outside of the box body 1, thereby improving the heat dissipation speed inside the box body 1, thereby improving the stability of the step-down device when working for a long time.

[0037] Step 2: When the box 1 is dissipating heat, the filter cover 9 can filter the airflow entering the box 1, so that the dust in the airflow can be blocked by the filter cover 9 to the outside of the box 1, thereby improving the cleanliness of the inside of the step-down device. When the step-down device is connected for use, the conductive clip 102 is clamped and fixed on the outside of the battery electrode, so that the conductive clip 102 can fix one end of the wire 101 on the outside of the battery electrode, thereby achieving the connection effect between the step-down device and the battery, thereby facilitating the connection and installation of the step-down device. When the step-down device is fixed, the support column 11 can support the box 1, so that the box 1 can be separated from the ground, thereby avoiding the problem of moisture vapor on the ground diffusing to the ground of the box 1, causing corrosion of the ground of the box 1, thereby improving the service life of the step-down device.

[0038] Compared with the related art, the voltage reducer with reverse connection protection provided by the utility model has the following beneficial effects:

[0039] By setting the air switch 3, when the battery is charged and the electrodes are connected, the output wire of the air switch 3 is connected to the battery electrode end, so that when the output wire of the air switch 3 is reversely connected to the battery electrode, the air switch 3 can cut off the internal circuit, that is, cut off the current inside the wire, thereby avoiding the problem of rapid increase in the internal temperature of the step-down device when the step-down circuit is reversed, thereby improving the protection effect of the step-down device when it is used.

[0040] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A voltage reducer with reverse connection protection, comprising a housing (1), characterized in that: A transformer (2) is fixedly installed inside the box (1); an air switch (3) is fixedly installed on the top of the inner cavity of the box (1); a flip column (4) is movably sleeved on the top of the air switch (3); a protective cover (5) is fixedly sleeved on the top of the box (1); a moisture-proof plate (6) is fixedly connected to the bottom of the inner cavity of the box (1); a heat conduction mechanism (7) is provided on the side of the transformer (2); a heat dissipation mechanism (8) is provided on the side of the inner wall of the box (1); a filter cover (9) is fixedly sleeved on one side of the box (1); a connecting mechanism (10) is provided on the other side of the box (1); and a support column (11) is fixedly connected to the bottom of the box (1).

2. A voltage reducer with reverse connection protection according to claim 1, characterized in that: The air switch (3) is located below the protective cover (5), and the input end of the air switch (3) is electrically connected to the output end of the transformer (2).

3. A voltage reducer with reverse connection protection according to claim 1, characterized in that: The protective cover (5) is movably sleeved on the outside of the turning column (4), and the material of the protective cover (5) is organic glass material.

4. A voltage reducer with reverse connection protection according to claim 1, characterized in that: The moisture-proof board (6) is made of natural fiber material, and the moisture-proof board (6) is in close contact with the bottom of the transformer (2).

5. The voltage reducer with reverse connection protection according to claim 1, characterized in that: The heat conduction mechanism (7) comprises a connecting plate (71), the connecting plate (71) is fixedly connected to the side of the transformer (2), a heat conduction plate (72) is fixedly connected to the side of the connecting plate (71), and the heat conduction plate (72) is made of metal aluminum material.

6. A voltage reducer with reverse connection protection according to claim 1, characterized in that: The heat dissipation mechanism (8) comprises a rotating motor (81), the rotating motor (81) is fixedly connected to the side of the inner wall of the box body (1), and a fan blade (82) is fixedly sleeved on the output shaft of the rotating motor (81).

7. A voltage reducer with reverse connection protection according to claim 1, characterized in that: The filter cover (9) is made of artificial fiber material, and the filter cover (9) is located in the middle of one side of the box body (1).

8. The voltage reducer with reverse connection protection according to claim 1, characterized in that: The connection mechanism (10) comprises a wire (101), one end of the wire (101) is electrically connected to the output end of the air switch (3), and one end of the wire (101) is fixedly connected to a conductive clip (102).

9. The voltage reducer with reverse connection protection according to claim 1, characterized in that: The support column (11) is made of rubber material, and there are two support columns (11), and the two support columns (11) are parallel to each other.

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