Output-adjustable air-cooled direct-current power supply

Abstract

The utility model discloses an output-adjustable air-cooled direct-current power supply, which belongs to the technical field of power supplies and comprises an external power supply, a rectifying and filtering module, an inversion module, a voltage transformation module, an output rectifying module, a radiator, a control panel, a motor, a driving module and a fan. The external power supply, the rectification filtering module, the inversion module, the voltage transformation module, the output rectification module and the radiator are connected in sequence, the radiator is connected with the control panel, and the control panel is connected with the fan through the motor and the driving module. According to the utility model, the fan is combined with the whole radiator to carry out centralized heat dissipation on power devices such as the rectification module, the inversion assembly, the transformation assembly and the output rectification assembly, thereby improving the heat dissipation effect of the power devices, guaranteeing the reliable operation of the power devices, and guaranteeing the service life of the DC power supply.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current power supplies, in particular to an air-cooled direct current power supply with adjustable output. Background Art

[0002] Programmable DC power supplies based on IGBT or MOS tubes as core power devices can be widely used in various industries such as laboratory testing, crystal heating, solar photovoltaic power generation manufacturing, etc. due to their rich control methods and high conversion efficiency.

[0003] The DC power supply in the existing technology can meet the requirements in terms of performance indicators, but has poor heat dissipation effect. In terms of overall structure, it has the disadvantages of messy layout, scattered wiring, large size, and inconvenient production.

[0004] As market and customer demands change, it is necessary to provide a DC power supply with good heat dissipation effect, overall aesthetics, ease of production and small size. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an adjustable output air-cooled DC power supply in response to the deficiencies of the background technology. The present invention uses a fan combined with a whole heat sink to centrally dissipate heat for power devices such as rectifier modules, inverter components, transformer components and output rectifier components, thereby ensuring the service life of the DC power supply.

[0006] The present invention adopts the following technical solutions to solve the above technical problems:

[0007] A DC power supply with adjustable output and air cooling comprises an external power supply, a rectifier and filter module, an inverter module, a transformer module, an output rectifier module, a radiator, a control panel, a motor and a drive module, and a fan; the output end of the external power supply is connected to the input end of the rectifier and filter module, the output end of the rectifier and filter module is connected to the input end of the inverter module, and the output end of the inverter module is connected to the input end of the transformer module; the output end of the transformer module is connected to the input end of the output rectifier module, the output end of the output rectifier module is connected to the input end of the output rectifier module, the output end of the output rectifier module is connected to the input end of the radiator, the radiator is connected to the control panel, and the control panel is connected to the fan via the motor and the drive module.

[0008] As a further preferred embodiment of an adjustable output air-cooled DC power supply of the present invention, the inverter module includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R8, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C9, a capacitor E1, a capacitor E2, a capacitor E3, a capacitor E4, a capacitor E5, a capacitor E6, a diode D3, a diode D4, an input terminal, an OUT2 terminal, a +48V voltage terminal, a -48V voltage terminal, a +12V voltage terminal, a -12V voltage terminal, a chip AD811, and a chip PB50;

[0009] Among them, the input end is connected to one end of the resistor R1, the other end of the resistor R1 is respectively connected to one end of the resistor R2, one end of the capacitor C9 and pin 2 of the chip AD811, the pin 3 of the chip AD811 is grounded, the pin 4 of the chip AD811 is respectively connected to the -12V voltage end and one end of the capacitor C1, the other end of the capacitor C1 is grounded, the pin 7 of the chip AD811 is respectively connected to the +12V voltage end and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the output end of the chip AD811 is connected to pin 4 of the chip PB50, the pin 3 of the chip PB50 is respectively connected to the +48V voltage end, one end of the capacitor C3, the positive electrode of the capacitor E1, the positive electrode of the capacitor E3, and the positive electrode of the capacitor E4, the other end of the capacitor C3 is grounded, the negative electrode of the capacitor E1 is respectively connected to the negative electrode of the capacitor E3 and the negative electrode of the capacitor E4 and grounded, the pin 2 of the chip PB50 is connected to one end of the resistor R6, the chip PB Pin 1 of 50 is connected to one end of resistor R5, pin 8 of chip PB50 is connected to one end of capacitor C5, pin 7 of chip PB50 is connected to one end of resistor R4, pin 5 of chip PB50 is grounded, pin 6 of chip PB50 is respectively connected to the -48V voltage terminal, the negative electrode of capacitor E4, one end of capacitor C4, the negative electrode of capacitor E5, and the negative electrode of capacitor E6, the positive electrode of capacitor E4 is respectively connected to the other end of capacitor C4, the positive electrode of capacitor E5, and the positive electrode of capacitor E6, the other end of resistor R6 is respectively connected to the other end of resistor R5, the other end of resistor R4, the other end of resistor R2, and one end of resistor R3, the other end of resistor R3 is connected to the other end of capacitor C9, the other end of capacitor C5 is respectively connected to the positive electrode of diode D3, the negative electrode of diode D4 and OUT2 terminal, the negative electrode of diode D3 is connected to the +48V voltage terminal, and the positive electrode of diode D4 is connected to the -48V voltage terminal.

[0010] As a further preferred embodiment of an adjustable output air-cooled DC power supply of the present invention, the motor and drive module includes a motor drive U4, a capacitor C6, a capacitor C7, a capacitor C8, a diode D2, a diode D3, a DC motor M1, and a DC motor M2; wherein, pin 1, pin 15, and pin 8 of the motor drive U4 are grounded, one end of the capacitor C6 is respectively connected to pin 9, pin 4, and the VCC end of the motor drive U4, the other end of the capacitor C6 is grounded, one end of the DC motor M1 is respectively connected to one end of the capacitor C8, pin 2 of the motor drive U4, and the positive electrode of the diode D2, the other end of the DC motor M1 is respectively connected to the other end of the capacitor C8 and pin 3 of the motor drive U4, the pin 13 of the motor drive U4 is respectively connected to the positive electrode of the diode D3, one end of the capacitor C7, and one end of the DC motor M2, the pin 14 of the motor drive U4 is respectively connected to the other end of the capacitor C7 and the other end of the DC motor M2, the cathode of the diode D2 is grounded, and the cathode of the diode D3 is grounded.

[0011] As a further preferred solution of the utility model for an adjustable output air-cooled DC power supply, the voltage transformation module adopts an industrial frequency transformer.

[0012] As a further preferred solution of the adjustable output air-cooled DC power supply of the present invention, the chip model of the control board is 68HC908MR16.

[0013] As a further preferred solution of the adjustable output air-cooled DC power supply of the utility model, the rectifier and filter module adopts a half-wave rectifier circuit.

[0014] Compared with the prior art, the above technical solution adopted by the present invention has the following technical effects:

[0015] The utility model discloses an adjustable output air-cooled DC power supply, which includes an external power supply, a rectifier filter module, an inverter module, a transformer module, an output rectifier module, a radiator, a control panel, a motor and a drive module, and a fan. The utility model utilizes a fan in combination with an integral radiator to centrally dissipate heat for power devices such as the rectifier module, the inverter component, the transformer component, and the output rectifier component, thereby improving the heat dissipation effect of the power devices, ensuring the reliable operation of the power devices, and guaranteeing the service life of the DC power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following

[0017] A brief introduction to the drawings required for the technical description is given below. Obviously, the drawings in the following description are the drawings of the present invention.

[0018] Some embodiments of the present invention can be easily implemented by ordinary technicians in this field without any creative work.

[0019] From these figures the other figures are derived.

[0020] Figure 1 This is a structural principle diagram of an adjustable output air-cooled DC power supply of the utility model;

[0021] Figure 2 This is a circuit diagram of the inverter module of the utility model;

[0022] Figure 3 This is a circuit diagram of the motor and drive module of the utility model. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings:

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] An adjustable output air-cooled DC power supply, such as Figure 1 As shown, it includes an external power supply, a rectifier and filter module, an inverter module, a transformer module, an output rectifier module, a radiator, a control board, a motor and drive module, and a fan; the output end of the external power supply is connected to the input end of the rectifier and filter module, the output end of the rectifier and filter module is connected to the input end of the inverter module, and the output end of the inverter module is connected to the input end of the transformer module; the output end of the transformer module is connected to the input end of the output rectifier module, the output end of the output rectifier module is connected to the input end of the output rectifier module, the output end of the output rectifier module is connected to the input end of the radiator, the radiator is connected to the control board, and the control board is connected to the fan through the motor and drive module.

[0026] The utility model uses a fan combined with a whole radiator to centrally dissipate heat for power devices such as rectifier modules, inverter components, transformer components and output rectifier components, thereby improving the heat dissipation effect of power devices, ensuring the reliable operation of power devices and guaranteeing the service life of DC power supply.

[0027] like Figure 2As shown, the inverter module includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R8, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C9, a capacitor E1, a capacitor E2, a capacitor E3, a capacitor E4, a capacitor E5, a capacitor E6, a diode D3, a diode D4, an input terminal, an OUT2 terminal, a +48V voltage terminal, a -48V voltage terminal, a +12V voltage terminal, a -12V voltage terminal, a chip AD811, and a chip PB50;

[0028] Among them, the input end is connected to one end of the resistor R1, the other end of the resistor R1 is respectively connected to one end of the resistor R2, one end of the capacitor C9 and pin 2 of the chip AD811, the pin 3 of the chip AD811 is grounded, the pin 4 of the chip AD811 is respectively connected to the -12V voltage end and one end of the capacitor C1, the other end of the capacitor C1 is grounded, the pin 7 of the chip AD811 is respectively connected to the +12V voltage end and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the output end of the chip AD811 is connected to pin 4 of the chip PB50, the pin 3 of the chip PB50 is respectively connected to the +48V voltage end, one end of the capacitor C3, the positive electrode of the capacitor E1, the positive electrode of the capacitor E3, and the positive electrode of the capacitor E4, the other end of the capacitor C3 is grounded, the negative electrode of the capacitor E1 is respectively connected to the negative electrode of the capacitor E3 and the negative electrode of the capacitor E4 and grounded, the pin 2 of the chip PB50 is connected to one end of the resistor R6, the chip PB Pin 1 of 50 is connected to one end of resistor R5, pin 8 of chip PB50 is connected to one end of capacitor C5, pin 7 of chip PB50 is connected to one end of resistor R4, pin 5 of chip PB50 is grounded, pin 6 of chip PB50 is respectively connected to the -48V voltage terminal, the negative electrode of capacitor E4, one end of capacitor C4, the negative electrode of capacitor E5, and the negative electrode of capacitor E6, the positive electrode of capacitor E4 is respectively connected to the other end of capacitor C4, the positive electrode of capacitor E5, and the positive electrode of capacitor E6, the other end of resistor R6 is respectively connected to the other end of resistor R5, the other end of resistor R4, the other end of resistor R2, and one end of resistor R3, the other end of resistor R3 is connected to the other end of capacitor C9, the other end of capacitor C5 is respectively connected to the positive electrode of diode D3, the negative electrode of diode D4 and OUT2 terminal, the negative electrode of diode D3 is connected to the +48V voltage terminal, and the positive electrode of diode D4 is connected to the -48V voltage terminal.

[0029] The inverter circuit of this utility model is packaged in a metal shell, which is convenient for overall installation on a radiator, and is conducive to long-term operation in high-power output situations. The operating voltage of PB50 is ±30V to ±100V, and a continuous 2A DC current output can be obtained. It has voltage and current gain, a high voltage change rate, and can reach an operating frequency of 160KHz and a current accuracy of 12mA.

[0030] like Figure 3As shown, the motor and drive module includes a motor driver U4, a capacitor C6, a capacitor C7, a capacitor C8, a diode D2, a diode D3, a DC motor M1, and a DC motor M2; wherein, pin 1, pin 15, and pin 8 of the motor driver U4 are grounded, one end of the capacitor C6 is respectively connected to pin 9, pin 4, and the VCC end of the motor driver U4, the other end of the capacitor C6 is grounded, one end of the DC motor M1 is respectively connected to one end of the capacitor C8, pin 2 of the motor driver U4, and the positive electrode of the diode D2, the other end of the DC motor M1 is respectively connected to the other end of the capacitor C8 and pin 3 of the motor driver U4, the pin 13 of the motor driver U4 is respectively connected to the positive electrode of the diode D3, one end of the capacitor C7, and one end of the DC motor M2, the pin 14 of the motor driver U4 is respectively connected to the other end of the capacitor C7 and the other end of the DC motor M2, the cathode of the diode D2 is grounded, and the cathode of the diode D3 is grounded.

[0031] The voltage transformation module adopts an industrial frequency transformer.

[0032] The control board's chip model is 68HC908MR16. The controller module's chip model is 68HC908MR16. The 68HC908MR16 microcontroller is a low-cost, high-performance eight-bit microcontroller. It features 32k bytes of rewritable on-chip flash memory and 768 bytes of RAM, which are fully sufficient for this system. It also includes a clock generator module that can select either an external crystal oscillator clock or an internal phase-locked loop (PLL) clock. The internal PLL clock selected in this system generates a precise 8MHz internal bus frequency, ensuring the system's frequency accuracy. It also features a programmable A / D clock with a minimum A / D conversion time of just 2μs, minimizing interrupt program execution time. It also includes an SCI serial communication interface that operates in full-duplex or half-duplex mode, enabling reliable serial communication with the external keyboard monitoring system.

[0033] The rectification and filtering module adopts a half-wave rectification circuit.

[0034] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as such herein.

[0035] The above embodiments are only for illustrating the technical concept of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications made based on the technical solution in accordance with the technical concept of the present invention shall fall within the scope of protection of the present invention. The above embodiments of the present invention are described in detail, but the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of the present invention.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable output air-cooled DC power supply, characterized by: It includes an external power supply, a rectifier and filter module, an inverter module, a transformer module, an output rectifier module, a radiator, a control panel, a motor and a drive module, and a fan; the output end of the external power supply is connected to the input end of the rectifier and filter module, the output end of the rectifier and filter module is connected to the input end of the inverter module, and the output end of the inverter module is connected to the input end of the transformer module; the output end of the transformer module is connected to the input end of the output rectifier module, the output end of the output rectifier module is connected to the input end of the output rectifier module, the output end of the output rectifier module is connected to the input end of the radiator, the radiator is connected to the control panel, and the control panel is connected to the fan through the motor and the drive module.

2. The adjustable output air-cooled DC power supply according to claim 1, characterized in that: The inverter module includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R8, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C9, a capacitor E1, a capacitor E2, a capacitor E3, a capacitor E4, a capacitor E5, a capacitor E6, a diode D3, a diode D4, an input terminal, an OUT2 terminal, a +48V voltage terminal, a -48V voltage terminal, a +12V voltage terminal, a -12V voltage terminal, a chip AD811, and a chip PB50; Among them, the input end is connected to one end of the resistor R1, the other end of the resistor R1 is respectively connected to one end of the resistor R2, one end of the capacitor C9 and pin 2 of the chip AD811, the pin 3 of the chip AD811 is grounded, the pin 4 of the chip AD811 is respectively connected to the -12V voltage end and one end of the capacitor C1, the other end of the capacitor C1 is grounded, the pin 7 of the chip AD811 is respectively connected to the +12V voltage end and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the output end of the chip AD811 is connected to pin 4 of the chip PB50, the pin 3 of the chip PB50 is respectively connected to the +48V voltage end, one end of the capacitor C3, the positive electrode of the capacitor E1, the positive electrode of the capacitor E3, and the positive electrode of the capacitor E4, the other end of the capacitor C3 is grounded, the negative electrode of the capacitor E1 is respectively connected to the negative electrode of the capacitor E3 and the negative electrode of the capacitor E4 and grounded, the pin 2 of the chip PB50 is connected to one end of the resistor R6, the chip PB Pin 1 of 50 is connected to one end of resistor R5, pin 8 of chip PB50 is connected to one end of capacitor C5, pin 7 of chip PB50 is connected to one end of resistor R4, pin 5 of chip PB50 is grounded, pin 6 of chip PB50 is respectively connected to the -48V voltage terminal, the negative electrode of capacitor E4, one end of capacitor C4, the negative electrode of capacitor E5, and the negative electrode of capacitor E6, the positive electrode of capacitor E4 is respectively connected to the other end of capacitor C4, the positive electrode of capacitor E5, and the positive electrode of capacitor E6, the other end of resistor R6 is respectively connected to the other end of resistor R5, the other end of resistor R4, the other end of resistor R2, and one end of resistor R3, the other end of resistor R3 is connected to the other end of capacitor C9, the other end of capacitor C5 is respectively connected to the positive electrode of diode D3, the negative electrode of diode D4 and OUT2 terminal, the negative electrode of diode D3 is connected to the +48V voltage terminal, and the positive electrode of diode D4 is connected to the -48V voltage terminal.

3. The adjustable output air-cooled DC power supply according to claim 1, characterized in that: The motor and drive module includes a motor driver U4, a capacitor C6, a capacitor C7, a capacitor C8, a diode D2, a diode D3, a DC motor M1, and a DC motor M2; wherein, pin 1, pin 15, and pin 8 of the motor driver U4 are grounded, one end of the capacitor C6 is respectively connected to pin 9, pin 4, and the VCC end of the motor driver U4, the other end of the capacitor C6 is grounded, one end of the DC motor M1 is respectively connected to one end of the capacitor C8, pin 2 of the motor driver U4, and the positive pole of the diode D2, the other end of the DC motor M1 is respectively connected to the other end of the capacitor C8 and pin 3 of the motor driver U4, pin 13 of the motor driver U4 is respectively connected to the positive pole of the diode D3, one end of the capacitor C7, and one end of the DC motor M2, pin 14 of the motor driver U4 is respectively connected to the other end of the capacitor C7 and the other end of the DC motor M2, the cathode of the diode D2 is grounded, and the cathode of the diode D3 is grounded.

4. The adjustable output air-cooled DC power supply according to claim 1, characterized in that: The voltage transformation module adopts an industrial frequency transformer.

5. The adjustable output air-cooled DC power supply according to claim 1, characterized in that: The chip model of the control board is 68HC908MR16.

6. The adjustable output air-cooled DC power supply according to claim 1, characterized in that: The rectification and filtering module adopts a half-wave rectification circuit.

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