Power converters and electronic devices

Abstract

This utility model relates to the field of connector technology, and provides a power converter and electronic device. A fuse is soldered to a PCB board; input terminals are soldered to the PCB board; power output terminals are soldered to the PCB board and electrically connected to the input terminals via the fuse. When the current through the fuse exceeds the rated current, the input terminals and power output terminals are disconnected; when the current through the fuse is less than or equal to the rated current, the input terminals and power output terminals are connected. A signal output terminal is soldered to the PCB board and electrically connected to the input terminals. Thus, the installation of a fuse in the power converter's power circuit ensures the safety of downstream electrical components, preventing them from burning out due to increased current. Furthermore, using a self-resetting fuse reduces the frequency of manual replacements and extends the equipment's lifespan.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a power converter and electronic device. Background Technology

[0002] A power converter is a device that converts electrical energy from one form to another.

[0003] Existing power converters generally include a power input terminal, a power output terminal, and a signal output terminal, which are electrically connected through a PCB board. When the power supply connected to the power input terminal fails, it outputs an excessive current, which damages the equipment connected to the power output terminal.

[0004] Therefore, there is an urgent need for a power converter and electronic device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a power converter and electronic device that can ensure the safety of its downstream electrical components and extend its own service life.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Power converter, including:

[0008] PCB board;

[0009] The fuse is soldered onto the PCB board.

[0010] Input terminals are soldered to the aforementioned PCB board.

[0011] The power output terminal is soldered to the PCB board and electrically connected to the input terminal through the fuse. When the current through the fuse is greater than the rated current, the input terminal and the power output terminal are disconnected. When the current through the fuse is less than or equal to the rated current, the input terminal and the power output terminal are connected.

[0012] The signal output terminal is soldered to the PCB board and is electrically connected to the input terminal.

[0013] As a preferred technical solution of the above-mentioned power converter, the input terminal includes a first wire harness, a first connector and a first nut. One end of the first wire harness is soldered to the PCB board and the other end is inserted into the first connector. The first nut is sleeved on the first connector and can rotate relative to the first connector. The inner sidewall of the first nut and a portion of the outer sidewall of the first connector are spaced apart to form an insertion groove.

[0014] As a preferred technical solution of the aforementioned power converter, the first connector is a stepped structure, including a first large-diameter section and a first small-diameter section fixed to each other, and a first shoulder formed between the first large-diameter section and the first small-diameter section. The first small-diameter section is located on the side of the first large-diameter section opposite to the PCB board. The first nut includes a first large-diameter hole and a first small-diameter hole. The first large-diameter hole is fitted onto the first large-diameter section, and the first small-diameter hole is fitted onto the side of the first large-diameter section opposite to the first small-diameter section. The diameter of the first small-diameter hole is smaller than the diameter of the first large-diameter section. The inner wall of the first large-diameter hole, the outer wall of the first small-diameter section, and the first shoulder form the insertion groove.

[0015] As a preferred technical solution for the aforementioned power converter, a slot is provided on the side of the first small diameter section of the first connector facing away from the PCB board.

[0016] As a preferred technical solution for the aforementioned power converter, a first sealing ring is installed at the bottom of the aforementioned insertion slot.

[0017] As a preferred technical solution for the aforementioned power converter, the outer wall of the first nut is provided with an anti-slip structure.

[0018] As a preferred technical solution of the above-mentioned power converter, it also includes a housing, the PCB board is installed in the housing, the housing is provided with three mounting holes, the three mounting holes are arranged in a T-shape, and the input terminal, the power output terminal and the signal output terminal are respectively installed in correspondence with the mounting holes.

[0019] As a preferred technical solution for the aforementioned power converter, a second sealing ring is provided between the first connector and the mounting hole.

[0020] As a preferred technical solution for the aforementioned power converter, the housing is sealed with adhesive.

[0021] An electronic device is also provided, which includes the power converter described above.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a power converter, including a PCB board, a fuse, an input terminal, a power output terminal, and a signal output terminal. The fuse is soldered to the PCB board; the input terminal is soldered to the PCB board; the power output terminal is soldered to the PCB board and electrically connected to the input terminal via the fuse. When the current through the fuse is greater than the rated current, the input terminal and the power output terminal are disconnected; when the current through the fuse is less than or equal to the rated current, the input terminal and the power output terminal are connected. The signal output terminal is soldered to the PCB board and electrically connected to the input terminal.

[0024] This configuration, with the fuse, input terminals, power output terminals, and signal output terminals all soldered and fixed to the PCB board, ensures stable electrical connections. The input terminals and power output terminals are electrically connected via a fuse with self-resetting capability. Under normal conditions, when the current supplied from the input terminals to the power output terminals is less than the fuse's rated current, the fuse maintains continuity between the two circuits. In abnormal conditions, when the current supplied from the input terminals to the power output terminals exceeds the fuse's rated current, the fuse creates a high-resistance state, limiting current flow and effectively blocking the connection between the input terminals and the power output terminals. Subsequently, when normal operation resumes (i.e., the current supplied from the input terminals falls below the fuse's rated current), the fuse returns to low resistance, and the circuit resumes normal operation. Thus, installing a fuse in the power converter's power circuit ensures the safety of downstream components, preventing them from burning out due to increased current. Furthermore, using a self-resetting fuse reduces the frequency of manual replacements and extends the equipment's lifespan. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the power converter and input male connector provided in this embodiment of the utility model;

[0027] Figure 2 This is a cross-sectional view of the power converter and input male connector provided in this embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the internal structure of the power converter provided in this embodiment of the utility model;

[0029] Figure 4This is a schematic diagram of the structure of the first connector provided in an embodiment of this utility model;

[0030] Figure 5 This is a cross-sectional view of the first nut provided in an embodiment of this utility model.

[0031] In the picture:

[0032] 100. Link converter; 200. Input male connector;

[0033] 1. PCB board;

[0034] 2. Fuse;

[0035] 3. Input terminal; 31. First wiring harness; 32. First connector; 321. First small diameter section; 3211. Slot; 322. First large diameter section; 33. First nut; 331. First small diameter hole; 332. First large diameter hole; 34. Insertion slot;

[0036] 4. Power output terminals;

[0037] 5. Signal output terminals;

[0038] 6. Shell;

[0039] 71. First sealing ring; 72. Second sealing ring. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] like Figures 1 to 5 As shown, this utility model provides a power converter, including a PCB board 1, a fuse 2, an input terminal 3, a power output terminal 4, and a signal output terminal 5. The fuse 2 is soldered to the PCB board 1; the input terminal 3 is soldered to the PCB board 1; the power output terminal 4 is soldered to the PCB board 1 and electrically connected to the input terminal 3 via the fuse 2. When the current through the fuse 2 is greater than the rated current, the input terminal 3 and the power output terminal 4 are disconnected; when the current through the fuse 2 is less than or equal to the rated current, the input terminal 3 and the power output terminal 4 are connected; the signal output terminal 5 is soldered to the PCB board 1 and electrically connected to the input terminal 3.

[0045] With this configuration, fuse 2, input terminal 3, power output terminal 4, and signal output terminal 5 are all soldered and fixed to PCB board 1, ensuring stable electrical connections. Input terminal 3 and power output terminal 4 are electrically connected via fuse 2, which has a self-resetting capability. Under normal conditions, if the current supplied from input terminal 3 to power output terminal 4 is less than the rated current of fuse 2, fuse 2 maintains the circuit connection between input terminal 3 and power output terminal 4. In an abnormal state, if the current supplied from input terminal 3 to power output terminal 4 exceeds the rated current of fuse 2, fuse 2 forms a high-resistance state, limiting current flow and thus blocking the connection between input terminal 3 and the current output terminal. Subsequently, if normal operation resumes (i.e., the current supplied from input terminal 3 is lower than the rated current of fuse 2), fuse 2 returns to a low-resistance state, and the circuit resumes normal operation. Therefore, installing fuse 2 in the power converter's power circuit ensures the safety of downstream electrical components, preventing them from burning out due to increased current. Furthermore, using a self-resetting fuse 2 reduces the frequency of manual replacements and extends the equipment's lifespan.

[0046] It should be noted that the working principle of the fuse 2 with self-resetting function is roughly as follows: when an overcurrent occurs, the excessive current causes the temperature to rise, and the conductive polymer inside the PPTC material expands, forming a high-resistance state (which can be understood as "disconnecting"), thereby limiting the current; after the fault is cleared, the current returns to normal, the temperature drops, the material shrinks and returns to low resistance, and the circuit automatically resumes normal operation.

[0047] Optionally, the input terminal 3 includes a first wire harness 31, a first connector 32, and a first nut 33. One end of the first wire harness 31 is soldered to the PCB board 1, and the other end is inserted into the first connector 32. The first nut 33 is sleeved on the first connector 32 and can rotate relative to the first connector 32. The inner sidewall of the first nut 33 and part of the outer sidewall of the first connector 32 are spaced apart to form an insertion groove 34.

[0048] For example, the first connector 32 has a through hole along its axial direction. One end of the first wire harness 31 is soldered to the PCB board 1, and the other end is inserted into and fixed in the through hole of the first connector 32. The outer wall of the input male connector 200 for mating with the input terminal 3 is provided with an external thread structure. When the input terminal 3 is inserted into the input male connector 200, the external thread of the input male connector 200 engages with the internal thread of the first nut 33. By rotating the first nut 33, the input male connector 200 can be inserted into the first connector 32 axially until it is electrically connected to the first wire harness 31.

[0049] Optionally, the first connector 32 has a stepped structure, including a first large-diameter section 322 and a first small-diameter section 321 fixed to each other, and a first shoulder formed between the first large-diameter section 322 and the first small-diameter section 321. The first small-diameter section 321 is located on the side of the first large-diameter section 322 facing away from the PCB board 1. The first nut 33 includes a first large-diameter hole 332 and a first small-diameter hole 331. The first large-diameter hole 332 is fitted onto the first large-diameter section 322, and the first small-diameter hole 331 is fitted onto the side of the first large-diameter section 322 facing away from the first small-diameter section 321. The diameter of the first small-diameter hole 331 is smaller than the diameter of the first large-diameter section 322. The inner wall of the first large-diameter hole 332, the outer wall of the first small-diameter section 321, and the first shoulder form an insertion groove 34.

[0050] Thus, the first large diameter section 322 is restricted by the tendency of the first nut 33 to move axially away from the PCB board 1. When the input terminal 3 is connected to the input male connector 200, turning the first nut 33 can only make the input male connector 200 insert into the input terminal 3 side.

[0051] Optionally, a slot 3211 is provided on the side of the first minor diameter section 321 of the first connector 32 facing away from the PCB board 1.

[0052] For example, the slot 3211 of the first connector 32 is opened along the axial direction. When the input male connector 200 that mates with the input terminal 3 is inserted into the first connector 32, at least part of the input male connector 200 is inserted into the slot 3211, thereby achieving the limiting and foolproof positioning of the input male connector 200 and the input terminal 3.

[0053] Optionally, a first sealing ring 71 is installed at the bottom of the insertion slot 34. When the input male connector 200 is assembled with the input terminal 3, as the first nut 33 rotates, the input male connector 200 continuously penetrates into the insertion slot 34, and the first sealing ring 71 can undergo elastic deformation. When the input male connector 200 compresses the first sealing ring 71, the first sealing ring 71 deforms, and the first sealing ring 71 fills the gap between the input male connector 200 and the input terminal 3, achieving a sealing effect.

[0054] Optionally, the outer wall of the first nut 33 is provided with an anti-slip structure.

[0055] For example, the outer wall of the first nut 33 is provided with anti-slip texture, thereby increasing the contact area and friction coefficient and preventing slippage during tightening.

[0056] Optionally, the power converter also includes a housing 6, in which a PCB board 1 is installed. The housing 6 has three mounting holes arranged in a T-shape, and the input terminal 3, power output terminal 4, and signal output terminal 5 are respectively installed in correspondence with the mounting holes.

[0057] For example, the housing 6 includes a first mounting hole, a second mounting hole, a third mounting hole, and a mounting cavity communicating with all three mounting holes. The PCB board 1 is mounted in the mounting cavity. The first connector 32 of the input terminal 3 is inserted into the first mounting hole and fixed to the housing 6. The second connector of the power output terminal 4 is inserted into the second mounting hole and fixed to the housing 6. The third connector of the signal output terminal 5 is inserted into the third mounting hole and fixed to the housing 6. Of the three mounting holes, the axes of two mounting holes are parallel, and the axis of the third mounting hole is perpendicular to the axes of the other two mounting holes.

[0058] Optionally, a second sealing ring 72 is provided between the first connector 32 and the mounting hole. In this way, the second sealing ring 72 can ensure a seal between the first connector 32 and the first mounting hole.

[0059] Optionally, the housing 6 is sealed by injection of adhesive. With this configuration, the adhesive injected into the housing 6 not only bonds the housing 6 together, but also wraps the PCB board 1 and fills the gaps inside the housing 6, thereby achieving a sealing effect.

[0060] Optionally, the power output terminal 4 includes a second wire harness, a second connector, and a second nut. One end of the second wire harness is soldered to the PCB board 1, and the other end is inserted into the second connector. The second nut is fitted onto the second connector and can rotate relative to the second connector. The inner sidewall of the second nut and part of the outer sidewall of the second connector are spaced apart to form an insertion groove 34.

[0061] For example, the second connector has a through hole along its axial direction. One end of the second wire harness is soldered to the PCB board 1, and the other end is inserted into and fixed in the through hole of the second connector. The outer wall of the power output male connector for mating with the power output terminal 4 is provided with an external thread structure. When the power output terminal 4 is inserted into the power output male connector, the external thread of the power output male connector engages with the internal thread of the second nut. By rotating the second nut, the power output male connector can be inserted into the second connector axially until it is electrically connected to the second wire harness.

[0062] Optionally, the signal output terminal 5 includes a third wire harness, a third connector, and a third nut. One end of the third wire harness is soldered to the PCB board 1, and the other end is inserted into the third connector. The third nut is fitted onto the third connector and can rotate relative to the third connector. The inner sidewall of the third nut and part of the outer sidewall of the third connector are spaced apart to form an insertion groove 34.

[0063] For example, the third connector has a through hole along its axial direction. One end of the third wire harness is soldered to the PCB board 1, and the other end is inserted into and fixed in the through hole of the third connector. The outer wall of the signal output male connector for mating with the signal output terminal 5 is provided with an external thread structure. When the signal output terminal 5 is inserted into the signal output male connector, the external thread of the signal output male connector engages with the internal thread of the third nut. By rotating the third nut, the signal output male connector can be inserted into the third connector axially until it is electrically connected to the third wire harness.

[0064] An electronic device is also provided, which includes the power converter described above.

[0065] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A power converter, characterized by, include: PCB board (1); A fuse (2) is soldered onto the PCB board (1); Input terminal (3), said input terminal (3) is soldered to said PCB board (1); The power output terminal (4) is soldered to the PCB board (1) and electrically connected to the input terminal (3) through the fuse (2). When the current through the fuse (2) is greater than the rated current, the input terminal (3) and the power output terminal (4) are disconnected. When the current through the fuse (2) is less than or equal to the rated current, the input terminal (3) and the power output terminal (4) are connected. The signal output terminal (5) is soldered to the PCB board (1) and is electrically connected to the input terminal (3).

2. The power converter of claim 1, wherein, The input terminal (3) includes a first wire harness (31), a first connector (32) and a first nut (33). One end of the first wire harness (31) is soldered to the PCB board (1), and the other end is inserted into the first connector (32). The first nut (33) is sleeved on the first connector (32) and can rotate relative to the first connector (32). The inner sidewall of the first nut (33) and a portion of the outer sidewall of the first connector (32) are spaced apart to form an insertion groove (34).

3. The power converter according to claim 2, characterized in that, The first connector (32) is a stepped structure, including a first large diameter section (322) and a first small diameter section (321) fixed to each other, and a first shoulder formed between the first large diameter section (322) and the first small diameter section (321). The first small diameter section (321) is located on the side of the first large diameter section (322) facing away from the PCB board (1). The first nut (33) includes a first large diameter hole (332) and a first small diameter hole (331). The first large diameter hole (332) is fitted onto the first large diameter section (322), and the first small diameter hole (331) is fitted onto the side of the first large diameter section (322) facing away from the first small diameter section (321). The diameter of the first small diameter hole (331) is smaller than the diameter of the first large diameter section (322). The inner wall of the first large diameter hole (332), the outer wall of the first small diameter section (321), and the first shoulder form the insertion groove (34).

4. The power converter according to claim 3, characterized in that, The first small diameter section (321) of the first connector (32) has a slot (3211) on the side opposite to the PCB board (1).

5. The power converter according to claim 2, characterized in that, A first sealing ring (71) is installed at the bottom of the insertion slot (34).

6. The power converter according to claim 2, characterized in that, The outer wall of the first nut (33) is provided with an anti-slip structure.

7. The power converter according to claim 2, characterized in that, It also includes a housing (6), the PCB board (1) is installed inside the housing (6), the housing (6) is provided with three mounting holes, the three mounting holes are arranged in a T-shape, and the input terminal (3), the power output terminal (4) and the signal output terminal (5) are respectively installed in correspondence with the mounting holes.

8. The power converter according to claim 7, characterized in that, A second sealing ring (72) is provided between the first connector (32) and the mounting hole.

9. The power converter according to claim 7, characterized in that, The housing (6) is sealed by injection.

10. An electronic device, characterized in that, Includes the power converter according to any one of claims 1-9.

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