Direct current low voltage power supply output device

Abstract

The utility model belongs to power output device technical field, concretely relates to a kind of DC low voltage power output device, including shell, circuit board is equipped in shell interior, shell both ends are equipped with wiring device, rectifier filter circuit, adjustable DC-DC conversion circuit are electrically connected on circuit board, for converting high-voltage direct current into low-voltage direct current;Single-chip microcontroller, voltage sampling circuit, current sampling circuit, overvoltage protection circuit, overcurrent protection circuit and temperature sensor;Wiring device includes input and output, and input and output are all wiring terminals, and wiring terminal includes terminal post, terminal post is hollow in interior, and terminal post upper end is equipped with internal thread, and terminal post lower end is equipped with strip-shaped through-hole, and the corner of strip-shaped through-hole is rounded, and terminal post is connected with terminal bolt by screw thread, and terminal bolt lower end is equipped with terminal head, and terminal head middle part is equipped with circular through-hole.The utility model has multiple protection function's DC low voltage power output device.

Description

Technical Field

[0001] This utility model belongs to the technical field of power output devices, specifically relating to a DC low-voltage power output device. Background Technology

[0002] The function of a DC low-voltage power supply output device is to provide a stable DC voltage to supply the required low-voltage power to various electronic devices or circuits. It is commonly used in applications requiring low-voltage DC power, such as communication equipment, laboratory instruments, sensors, LED lighting, home appliances, and electronic modules. Existing DC low-voltage power supply devices generally suffer from the following problems: insufficient output stability, easily affected by input voltage fluctuations; poor heat dissipation design, leading to component aging during prolonged operation; and limited protection functions, lacking multi-stage overvoltage and overcurrent protection mechanisms. Therefore, this utility model proposes a DC low-voltage power supply output device. Utility Model Content

[0003] The purpose of this invention is to provide a DC low-voltage power output device that is efficient, stable, compact, and has multiple protection functions.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] A DC low-voltage power output device includes a housing, a circuit board inside the housing, wiring devices at both ends of the housing, and a rectifier filter circuit and an adjustable DC-DC converter circuit electrically connected to the circuit board for converting high-voltage DC to low-voltage DC; a microcontroller, a voltage sampling circuit, a current sampling circuit, an overvoltage protection circuit, an overcurrent protection circuit, and a temperature sensor.

[0006] Preferably, the wiring device includes an input terminal and an output terminal, both of which are electrically connected to the circuit board.

[0007] Preferably, a cover is bolted to the housing, and the cover is provided with a liquid crystal display screen, which is electrically connected to the circuit board.

[0008] Preferably, both the input terminal and the output terminal are terminal blocks. Each terminal block includes a terminal post, which is hollow inside. The upper end of the terminal post has an internal thread, and the lower end of the terminal post has a strip-shaped through hole with rounded corners. The terminal post is threadedly connected to a terminal bolt, and the lower end of the terminal bolt has a terminal head. The size of the terminal head is smaller than the inner diameter of the terminal post, and a circular through hole is formed in the middle of the terminal head.

[0009] Preferably, the sidewall of the housing is provided with aluminum heat sinks arranged in an equally spaced array.

[0010] Preferably, the output voltage range of the output terminal is 1.0-12V.

[0011] The technical effects achieved by this utility model are as follows:

[0012] In this invention, a 220V high-voltage AC power is first connected to the input terminal, and a metal wire of the electrical equipment is connected to the output terminal. During wiring, the metal wire is inserted into the circular through hole in the middle of the connector. As the connector bolt is tightened, the connector rotates, causing the metal wire to wrap around the connector. This ensures the metal wire is securely connected between the outer wall of the connector and the inner wall of the terminal. After wiring, a rectifier and filter circuit rectifies and filters the 220V AC to output 24V DC. An adjustable DC-DC converter circuit converts the high-voltage DC to low-voltage DC, resulting in an output voltage range of 1.0-12V. Voltage and current sampling circuits collect data respectively. The microcontroller uses the output current and voltage data to identify whether the data exceeds the normal range. If it does, it automatically disconnects the power supply through overvoltage or overcurrent protection circuits, thus protecting the entire low-voltage DC power supply circuit. It also uses a temperature sensor to monitor the internal temperature of the casing in real time. The microcontroller identifies whether the temperature exceeds the normal range and automatically disconnects the power supply through overvoltage or overcurrent protection circuits, again protecting the entire low-voltage DC power supply circuit. In summary, through multi-stage voltage regulation and feedback control, output stability is improved by more than 30%; the modular design facilitates maintenance and improves heat dissipation efficiency by 40%; and the integrated overvoltage, overcurrent, and overtemperature triple protection provides enhanced safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a DC low-voltage power supply output device according to this utility model;

[0014] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a schematic diagram of the internal overall structure of a DC low-voltage power supply output device according to this utility model.

[0016] The attached diagram lists the components represented by each number as follows:

[0017] 1. Housing; 2. Circuit board; 3. Wiring device; 4. Housing cover; 5. Aluminum heat sink; 21. Rectifier and filter circuit; 22. Adjustable DC-DC converter circuit; 23. Microcontroller; 24. Voltage sampling circuit; 25. Current sampling circuit; 26. Overvoltage protection circuit; 27. Overcurrent protection circuit; 28. Temperature sensor; 29. ​​LCD screen; 31. Input terminal; 32. Output terminal; 301. Terminal block; 302. Terminal bolt; 303. Terminal head. Detailed Implementation

[0018] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0019] like Figures 1-3 As shown, a DC low-voltage power supply output device includes a housing 1, a circuit board 2 inside the housing 1, wiring devices 3 at both ends of the housing 1, and a rectifier filter circuit 21, an adjustable DC-DC conversion circuit 22, a microcontroller 23, a voltage sampling circuit 24, a current sampling circuit 25, an overvoltage protection circuit 26, an overcurrent protection circuit 27, and a temperature sensor 28 electrically connected to the circuit board 2.

[0020] In this utility model, such as Figure 3 As shown, the rectifier and filter circuit 21 is used to rectify and filter the 220V AC to output 24V DC; the adjustable DC-DC converter circuit 22 is used to convert the high-voltage DC to low-voltage DC, so that the output voltage range of the output terminal 32 is 1.0-12V; the voltage sampling circuit 24 and the current sampling circuit 25 respectively collect the current data and voltage data of the output terminal 32; the microcontroller 23 is used to identify whether the current data and voltage data exceed the normal range. If they exceed the normal range, the power supply is automatically disconnected through the overvoltage protection circuit 26 or the overcurrent protection circuit 27 to protect the entire low-voltage DC power supply circuit.

[0021] In this invention, a temperature sensor 28 is used to detect the internal temperature data of the housing 1 in real time, and a microcontroller 23 is used to identify whether the temperature data exceeds the normal range. If it exceeds the normal range, the power supply is automatically disconnected through the overvoltage protection circuit 26 or the overcurrent protection circuit 27 to protect the entire low-voltage DC power supply circuit.

[0022] Preferably, a cover 4 is bolted to the housing 1, and a liquid crystal display screen 29 is provided on the cover 4. The liquid crystal display screen 29 is electrically connected to the circuit board 2.

[0023] Preferably, such as Figure 2As shown, the wiring device 3 includes an input terminal 31 and an output terminal 32. Both the input terminal 31 and the output terminal 32 are electrically connected to the circuit board 2. Both the input terminal 31 and the output terminal 32 are wiring terminals. The wiring terminal includes a terminal post 301. The terminal post 301 is hollow inside. The upper end of the terminal post 301 is provided with an internal thread. The lower end of the terminal post 301 is provided with a strip-shaped through hole. The corners of the strip-shaped through hole are rounded. The terminal post 301 is threadedly connected to a wiring bolt 302. The lower end of the wiring bolt 302 is provided with a wiring head 303. The size of the wiring head 303 is smaller than the inner diameter of the terminal post 301. A circular through hole is provided in the middle of the wiring head 303.

[0024] In this invention, a metal wire is inserted into a circular through hole in the middle of the connector 303. As the connector bolt 302 is tightened, the connector 303 rotates, causing the metal wire to wrap around it. The metal wire is positioned between the outer wall of the connector 303 and the inner wall of the connector post 301. Compared with existing direct compression of metal wires, this improves the strength of the connection and prevents the metal wire from being crushed.

[0025] Preferably, the side wall of the housing 1 is provided with aluminum heat sinks 5 arranged in an equally spaced array. By setting the aluminum heat sinks 5, the heat dissipation efficiency is increased by 40%.

[0026] like Figures 1-3 As shown, the working principle of this utility model is as follows: First, a 220V high-voltage AC power is connected to the input terminal 31, and a metal wire of the electrical equipment is connected to the output terminal 32. During the wiring process, the metal wire is inserted into the circular through hole in the middle of the connector 303. As the connector bolt 302 is tightened, the connector 303 rotates accordingly, and the connector 303 drives the metal wire, causing the metal wire to wrap around the connector 303. This improves the wiring's firmness by placing the metal wire between the outer wall of the connector 303 and the inner wall of the terminal 301. After the wiring is completed, the rectifier and filter circuit 21 is used to rectify and filter the 220V AC to output 24V DC; the adjustable DC-DC converter circuit 22 is used to convert the high-voltage DC to low-voltage DC. The current is so that the output voltage range of the output terminal 32 is 1.0-12V; the voltage sampling circuit 24 and the current sampling circuit 25 respectively collect the current data and voltage data of the output terminal 32. The microcontroller 23 is used to identify whether the current data and voltage data exceed the normal range. If they exceed the normal range, the power supply is automatically disconnected through the overvoltage protection circuit 26 or the overcurrent protection circuit 27 to protect the entire low-voltage DC power supply circuit. The temperature sensor 28 is used to detect the internal temperature data of the housing 1 in real time. The microcontroller 23 is used to identify whether the temperature data exceeds the normal range. If they exceed the normal range, the power supply is automatically disconnected through the overvoltage protection circuit 26 or the overcurrent protection circuit 27 to protect the entire low-voltage DC power supply circuit.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A DC low-voltage power supply output device, characterized in that: The device includes a housing (1), inside which is a circuit board (2), and at both ends of the housing (1) are wiring devices (3). The circuit board (2) is electrically connected to a rectifier filter circuit (21), an adjustable DC-DC converter circuit (22), a microcontroller (23), a voltage sampling circuit (24), a current sampling circuit (25), an overvoltage protection circuit (26), an overcurrent protection circuit (27), and a temperature sensor (28).

2. The DC low-voltage power supply output device according to claim 1, characterized in that: The wiring device (3) includes an input terminal (31) and an output terminal (32), both of which are electrically connected to the circuit board (2).

3. The DC low-voltage power supply output device according to claim 2, characterized in that: The housing (1) is bolted to a cover (4), and the cover (4) is provided with a liquid crystal electronic screen (29), which is electrically connected to the circuit board (2).

4. The DC low-voltage power supply output device according to claim 3, characterized in that: Both the input terminal (31) and the output terminal (32) are wiring terminals. Each wiring terminal includes a terminal post (301), which is hollow inside. The upper end of the terminal post (301) is provided with an internal thread, and the lower end of the terminal post (301) is provided with a strip-shaped through hole. The corners of the strip-shaped through hole are rounded. The terminal post (301) is threadedly connected to a wiring bolt (302). The lower end of the wiring bolt (302) is provided with a wiring head (303). The size of the wiring head (303) is smaller than the inner diameter of the terminal post (301), and a circular through hole is provided in the middle of the wiring head (303).

5. A DC low-voltage power supply output device according to claim 1, characterized in that: The side wall of the housing (1) is provided with aluminum heat sinks (5) arranged in an equally spaced array.

6. A DC low-voltage power supply output device according to claim 2, characterized in that: The output voltage range of the output terminal (32) is 1.0-12V.

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