Industrial special isolation DC power supply with overload protection

Abstract

The utility model relates to the technical field of DC power supplies, and discloses an industrial special isolation DC power supply with overload protection, which comprises a power box and an overload protection module, a fan is arranged on the plane of one side of the power box perpendicular to the ground, strip-shaped grooves are arranged on the planes of the other three sides of the power box perpendicular to the ground, and the overload protection module is arranged in the strip-shaped grooves. Wherein a display screen, a button, an adjusting knob and an output interface are arranged on the upper portion of the front face, the output interface is electrically connected with a circuit integration module in the power box through a wire, and the circuit integration module comprises an input filtering module, an AC / DC conversion module, an isolation transformer, an overload protection module and a voltage stabilization output module. The overload protection module is used for monitoring output current in real time and cutting off power supply when the output current exceeds a rated value, and through the arrangement of the overload protection module, when the circuit current exceeds a set threshold value, the power supply is automatically cut off, so that equipment damage or fire risk is prevented, and the safety of the power supply module and load equipment under an abnormal working condition is ensured.

Description

Technical Field

[0001] This utility model relates to the field of DC power supply technology, and more specifically to an industrial-grade isolated DC power supply with overload protection. Background Technology

[0002] A DC power supply is a device that converts alternating current (AC) into direct current (DC), or a device that directly provides stable DC power (such as a battery). Its core function is to provide DC power with a specific voltage and current to the load, such as the 24V or 12V power supply requirements commonly found in industrial equipment.

[0003] Existing technology has shortcomings: it suffers from insufficient overload protection and inadequate heat dissipation design. When the circuit current exceeds the set threshold, it relies solely on fuses or simple current limiting circuits, resulting in a slow response speed. In addition, the power supply casing lacks heat dissipation design, causing heat to accumulate inside the power supply, making it unable to operate stably in high-temperature and high-humidity industrial environments for extended periods, and exhibiting weak environmental adaptability. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an industrial-specific isolated DC power supply with overload protection to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an industrial-grade isolated DC power supply with overload protection, comprising a power supply box and an overload protection module. A fan is mounted on one side of the power supply box perpendicular to the ground, and slots are formed on the other three sides of the power supply box perpendicular to the ground. A display screen, buttons, adjustment knobs, and an output interface are mounted on the upper part of the front panel. The output interface is electrically connected to a circuit integration module inside the power supply box via wires. The circuit integration module includes an input filtering module, an AC / DC conversion module, an isolation transformer, an overload protection module, and a voltage regulator output module. The input filtering module receives the input power and suppresses high-frequency noise from the power grid to prevent interference to downstream circuits. The AC / DC conversion module converts the input AC power into DC power. The isolation transformer provides electrical isolation between the input and output, blocking common-mode interference. The overload protection module monitors the output current in real time and cuts off the power supply if the current exceeds the rated value. A voltage regulator output module is electrically connected to its side, and the voltage regulator output module regulates the voltage to ensure stable load operation.

[0006] Furthermore, the input filtering module has wiring terminals on its side, which can be connected to an external power source via a wire to the input interface.

[0007] Furthermore, the power supply box includes a box wall, a movable box panel, and a box cover. The box wall and the movable box panel form a box-shaped structure without a cover. The four corners of the bottom of the box are provided with slots, and a suspension plate is fixedly connected to it by engaging with a slot. The top of the suspension plate is provided with a cross through groove, and its top is also fixedly connected to the bottom of the circuit integration module.

[0008] Furthermore, the top of the suspension plate has a mounting hole, and a mounting plate is fixedly connected to it by screws. An overload protection module is fixedly connected to the top of the mounting plate.

[0009] Furthermore, the bottom end of the movable box panel is movably connected to the inner bottom end of the box wall via a hinge. The top two sides of the movable box panel are provided with protrusions. When the movable box panel is rotated along the bottom edge of the box wall to be perpendicular to the ground, i.e., forming a complete open box shape with the box wall, the protrusions will engage with the grooves opened on the inner wall of the box wall to fix the vertical state of the movable box panel. The side of the movable box panel is provided with evenly arranged strip grooves, and an input interface is provided below the strip grooves for connecting an external AC power supply.

[0010] Furthermore, in the state of forming a lidless box structure with the box wall and the movable box panel, the top is fixedly connected to the box cover by fixing bolts. The fixing bolts are set on the recessed edge of the box cover. The recessed edge of the box cover covers the two sides of the box wall and the upper edge of the movable box panel, and at the same time has a fixing effect on the vertical state of the movable box panel.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model has an overload protection module that automatically cuts off the power supply when the circuit current exceeds a set threshold, in order to prevent equipment damage or fire risk and to ensure the safety of the power module itself and the load equipment under abnormal operating conditions.

[0013] 2. This utility model features an overload protection module. The bottom mounting plate of the overload protection module is fixedly connected to the suspension plate by screws. The overload protection module can be replaced by removing the screws, which improves the convenience of maintaining the overload protection module.

[0014] 3. This utility model features a fan on one side of the power supply box, strip grooves on the other three sides of the power supply box perpendicular to the ground, and slots at the four corners of the bottom of the power supply box. A suspension plate is fixedly connected to the suspension plate by engaging with the slots. The top of the suspension plate has intersecting slots. The fan promotes gas exchange between the inside and outside of the box, the strip grooves on the box wall facilitate gas flow, and the suspension plate increases the contact area between the circuit module and the gas, which is beneficial for heat dissipation and improves the power supply's ability to adapt to high-temperature and high-humidity industrial environments. Attached Figure Description

[0015] Figure 1 This is a front structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the movable box cover movement structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the circuit integration module of this utility model;

[0019] Figure 5 This is a schematic diagram of the split structure of the power supply box of this utility model.

[0020] The attached diagram is labeled as follows: 1. Power supply box; 101. Strip groove; 102. Box wall; 1021. Slot; 1022. Block; 1023. Suspension plate; 1024. Groove; 1025. Mounting hole; 103. Movable box plate; 1031. Hinge; 1032. Protrusion; 1033. Input interface; 104. Box cover; 1041. Fixing bolt; 2. Fan; 3. Display screen; 4. Button; 5. Adjustment knob; 6. Output interface; 7. Circuit integration module; 701. Input filtering module; 7011. Terminal block; 702. AC / DC conversion module; 703. Isolation transformer; 704. Overload protection module; 7041. Mounting plate; 705. Regulated output module. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The industrial-grade isolated DC power supply with overload protection involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Reference Figures 1 to 5This utility model provides an industrial-grade isolated DC power supply with overload protection, including a power supply box 1 and an overload protection module 704. A fan 2 is mounted on one side of the power supply box 1 perpendicular to the ground, and slots 101 are formed on the other three sides of the power supply box 1 perpendicular to the ground. The upper part of the front panel includes a display screen 3, buttons 4, adjustment knobs 5, and an output interface 6. The output interface 6 is electrically connected to a circuit integration module 7 inside the power supply box 1 via wires. The circuit integration module 7 includes an input filtering module 701, an AC / DC conversion module 702, and an isolation module 704. The system includes a transformer 703, an overload protection module 704, and a voltage regulator output module 705. An input filter module 701 receives the input power and suppresses high-frequency noise from the power grid to prevent interference to downstream circuits. An AC / DC conversion module 702 converts the input AC power into DC power. An isolation transformer 703 provides electrical isolation between the input and output, blocking common-mode interference. An overload protection module 704 monitors the output current in real time and cuts off the power supply if the current exceeds the rated value. A voltage regulator output module 705 is electrically connected to its side to regulate the voltage and ensure stable operation of the load.

[0023] The overload protection module 704 will automatically cut off the power supply when the circuit current exceeds the set threshold to prevent equipment damage or fire risk, and ensure the safety of the power module itself and the load equipment under abnormal operating conditions. The fan 2 starts to accelerate the gas exchange speed inside and outside the box, and the strip groove 1023 provides a path for gas exchange, improves the heat dissipation performance of the power box 1, and increases its adaptability to high temperature and high humidity environments.

[0024] The input filter module 701 has a wiring terminal 7011 on its side, which can be connected to an external power source via a wire to the input interface 1033.

[0025] The power supply box 1 includes a box wall 102, a movable box panel 103, and a box cover 104. The box wall 102 and the movable box panel 103 form a box-shaped structure without a cover. The four corners of the bottom of the box have slots 1021. A suspension plate 1023 is fixedly connected to the suspension plate 1023 by engaging with a block 1022. The top of the suspension plate 1023 has intersecting through slots. The top of the suspension plate 1023 is also fixedly connected to the bottom of the circuit integration module 7, isolating the circuit integration module 7 from the bottom of the power supply box 1, increasing the contact area between the circuit integration module 7 and the flowing air, and improving the heat dissipation efficiency.

[0026] The top of the suspension plate 1023 has a mounting hole 1025, and a mounting plate 7041 is fixedly connected to it by screws. An overload protection module 704 is fixedly connected to the top of the mounting plate 7041. The overload protection module 704 can be replaced by removing the screws, which is convenient for maintenance.

[0027] The bottom end of the movable box panel 103 is movably connected to the bottom end of the inner wall of the box 102 via a hinge 1031. The top two sides of the movable box panel 103 are provided with protrusions 1032. When the movable box panel 103 rotates along the bottom edge of the box wall 102 to be perpendicular to the ground, forming a complete open box shape with the box wall 102, the protrusions 1032 will engage with the grooves 1024 opened on the inner wall of the box wall 102 to fix the vertical state of the movable box panel 103. The side of the movable box panel 103 is provided with evenly arranged strip grooves 101, and an input interface 1033 is provided below the strip grooves 101 for connecting an external AC power supply.

[0028] In the case where the box wall 102 and the movable box panel 103 form a box-shaped structure without a lid, the top of the box is fixedly connected to the box cover 104 by fixing bolts 1041. The fixing bolts 1041 are set on the recessed edge of the box cover 104. The recessed edge of the box cover 104 covers the two sides of the box wall 102 and the upper edge of the movable box panel 103, and at the same time fixes the vertical state of the movable box panel 103.

[0029] The working principle of this utility model is as follows: First, an external AC power supply is connected to the back of the power supply box 1 through the input interface 1033. The AC power is converted into stable DC power through the input filter module 701, AC / DC conversion module 702, isolation transformer 703, overload protection module 704, and voltage regulation output module 705 of the internal circuit integrated module 7 of the power supply box 1. During this process, the fan 2 works to exchange the gas inside the power supply box 1 with the external gas. The strip groove 101 on the side of the power supply box 1 provides a channel for the flow of internal and external gas. The suspension plate 1023 isolates the circuit integrated module 7 from the bottom of the box, so that the heat generated by the circuit module inside the box can be quickly removed, increasing the adaptability of the power supply box 1 to high temperature and high humidity industrial environments. When the movable box plate 103 on the side of the box is opened, it expands the internal space of the box. Its existence makes it convenient for the staff to inspect and repair the circuit module inside the box, avoiding the interference caused by the cramped internal space when repairing specific modules.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An industrial special-purpose isolated DC power supply with overload protection, characterized by, The utility model provides an electric power supply box, including power box (1) and overload protection module (704), the power box (1) is provided with fan (2) in the plane perpendicular to the side of ground, the power box (1) is opened with strip groove (101) in the plane perpendicular to the other three sides of ground, wherein the upper portion of front face is provided with display screen (3), button (4), adjusting knob (5) and output interface (6), wherein output interface (6) is electrically connected with circuit integrated module (7) in the inside of power box (1) through wire, the circuit integrated module (7) includes input filter module (701), AC / DC conversion module (702), isolation transformer (703), overload protection module (704) and regulated power supply module (705), the input filter module (701) is used to receive input power and suppress power grid high-frequency noise, prevent the interference to back-end circuit, the AC / DC conversion module (702) converts the input alternating current into direct current, the isolation transformer (703) realizes the electrical isolation of input and output, blocks common-mode interference, the overload protection module (704) is used for real-time monitoring output current, and the power supply is cut off in excess rated value, and its side surface is electrically connected with regulated power supply module (705), and the regulated power supply module (705) is used to adjust voltage, and ensure that load is stably operated.

2. The industrial special-purpose isolated DC power supply with overload protection according to claim 1, characterized in that: The side surface of the input filter module (701) is provided with a terminal (7011), which can be connected to an external power source through a wire.

3. The industrial special-purpose isolated DC power supply with overload protection according to claim 1, characterized in that: The power box (1) includes a box wall (102), a movable box plate (103), and a box cover (104), wherein the box wall (102) and the movable box plate (103) form an uncovered box structure, the inside bottom corner of the box is provided with a clamping groove (1021), and a suspension plate (1023) is fixedly connected to the clamping groove (1021) through clamping with a clamping block (1022), the top end of the suspension plate (1023) is provided with a cross-shaped through groove, and the top end of the suspension plate (1023) is fixedly connected to the bottom end of the circuit integrated module (7).

4. The industrial special-purpose isolated DC power supply with overload protection according to claim 3, characterized in that: The top end of the suspension plate (1023) is provided with a mounting hole (1025), and a mounting plate (7041) is fixedly connected to the mounting hole (1025) through a screw, and the top end of the mounting plate (7041) is fixedly connected to the overload protection module (704).

5. The industrial special purpose isolated DC power supply with overload protection according to claim 3, characterized in that: The bottom end of the movable box plate (103) is movably connected to the inside bottom end of the box wall (102) through a hinge (1031), the two side top ends of the movable box plate (103) are provided with protrusions (1032), when the movable box plate (103) is rotated along the bottom edge of the box wall (102) to be perpendicular to the ground, i.e., the movable box plate (103) forms a complete uncovered box structure with the box wall (102), the protrusions (1032) are clamped with the recesses (1024) formed in the inner wall of the box wall (102), so that the vertical state of the movable box plate (103) is fixed, and the side surface of the movable box plate (103) is provided with uniformly arranged strip grooves (101), and an input interface (1033) is arranged below the strip grooves (101) for plugging in an external alternating current power supply.

6. The industrial special purpose isolated DC power supply with overload protection according to claim 3, characterized in that: The box wall (102) and the movable box plate (103) constitute a coverless box type structure, and the top end is fixedly connected with a box cover (104) through a fixing bolt (1041), wherein the fixing bolt (1041) is arranged on the sunken edge of the box cover (104), the edge of the box cover (104) is sunken and covers the two sides of the box wall (102) and the upper edge part of the movable box plate (103), and has a fixing effect on the vertical state of the movable box plate (103).

7. The industrial special purpose isolated DC power supply with overload protection according to claim 1, characterized in that: The output interface (6) is used for outputting stable direct current.

Images