CN207885036U - A kind of D.C. high-current constant-current source of output constant current - Google Patents

Abstract

The utility model discloses a kind of D.C. high-current constant-current sources of output constant current, including casing, the inner bottom of the casing installs reactor, the positive inside of casing is equipped with first contactor, fuse is installed above first contactor, breaker is installed above the fuse, the inside at the casing back side is equipped with mutual inductor, the side of the mutual inductor is installed by Section Bar Heat Sinks, the front of the Section Bar Heat Sinks is equipped with high frequency transformer and rectification module, and IGBT module is arranged in the top of the high frequency transformer.The utility model exports the D.C. high-current constant-current source of constant current, first contactor and fuse are electrically connected by conducting wire, fuse is electrically connected breaker by conducting wire, second contactor and IGBT module electrical connection, reactor can reduce short circuit current and the voltage of transcient short circuit time system is made to remain unchanged, constant output current is provided, each electric elements, which are electrically connected, is controlled by control panel, is allowed to finally export constant electric current.

Description

A kind of D.C. high-current constant-current source of output constant current

Technical field

The utility model is related to D.C. high-current constant-current source technical field, specially a kind of direct current of output constant current is big Electric current constant-current source.

Background technology

Currently, D.C. high-current constant current source device has very in various electronic measurement circuits and sensor electronics It is widely applied, is unit irreplaceable in the occasions such as LED new energy, signal detection and power amplification, especially certain It is higher and higher to the required precision of DC constant current power supply equipment in intelligent instrumentation and advanced detection technique.In addition, existing straight It is usually only to have electric current output function all the way to flow high constant-current source equipment, and the electric current of output is not constant, influences to use Effect.

Utility model content

The purpose of this utility model is to provide a kind of D.C. high-current constant-current sources of output constant current, and having can be defeated The advantages of going out constant electric current can solve the problems of the prior art.

To achieve the above object, the utility model provides the following technical solutions：A kind of big electricity of direct current of output constant current Constant-current source, including casing are flowed, hanging ring is connected through a screw thread at the top of the casing, movable pulley, the machine are installed in the bottom of casing The front of shell is equipped with front door, and front door is locked at by door lock on casing, and the back side installation of the casing has a back door connection, and is opened on back door Equipped with radiator window, the inner bottom of the casing installs reactor, and the positive inside of casing is equipped with first contactor, the Fuse is installed above one contactor, breaker is installed above the fuse, the positive inside of casing is leaned on Resistance is provided at proximal edge, the inside at the casing back side is equipped with mutual inductor, and the side installation proximate matter of the mutual inductor dissipates The front of hot device, the Section Bar Heat Sinks is equipped with high frequency transformer and rectification module, and the top of the high frequency transformer is arranged IGBT module, the side installation capacitance and stacking busbar of the IGBT module, the another side installation second of the IGBT module Switching Power Supply is installed in the top of contactor, the second contactor, and control panel is installed in the side of the Switching Power Supply, control panel Side is installed by toroidal transformer.

Preferably, the first contactor and fuse are electrically connected by conducting wire, and fuse is electrically connected open circuit by conducting wire Device.

Preferably, the second contactor and IGBT module electrical connection, IGBT module and stacking busbar electrical connection.

Preferably, the capacitance and stacking busbar are corresponding with positive resistance.

Compared with prior art, the beneficial effects of the utility model are as follows：

The utility model exports the D.C. high-current constant-current source of constant current, first contactor and fuse and passes through conducting wire electricity Connection, fuse are electrically connected breaker, second contactor and IGBT module electrical connection, IGBT module and stacking busbar by conducting wire Electrical connection, reactor can reduce short circuit current and the voltage of transcient short circuit time system made to remain unchanged, and provide constant output electricity Stream, contactor control load electric appliance, high voltage is become low-voltage by mutual inductor, high current becomes low current, for measure or Protection system, IGBT module driving power is small and saturation pressure reduces rectification module and converts exchange to direct current, each electric elements It is electrically connected and is controlled by control panel, be allowed to form a complete line, be allowed to finally export constant electric current.

Description of the drawings

Fig. 1 is the front view of the utility model；

Fig. 2 is the right view of the utility model；

Fig. 3 is the left view of the utility model；

Fig. 4 is the rearview of the utility model；

Fig. 5 is the front view internal structure chart of the utility model；

Fig. 6 is the rearview internal structure chart of the utility model.

In figure：1 casing, 2 front doors, 3 door locks, 4 hanging rings, 5 movable pulleys, 6 back doors, 7 radiator windows, 8 reactors, 9 first contacts Device, 10 fuses, 11 breakers, 12 resistance, 13 mutual inductors, 14 second contactors, 15 Switching Power Supplies, 16 toroidal transformers, 17 Control panel, 18 capacitances, 19 IGBT modules, 20 rectification modules, 21 high frequency transformers, 22 Section Bar Heat Sinks, 23 stacking busbares.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

Please refer to Fig.1-6, a kind of D.C. high-current constant-current source of output constant current, including casing 1, the top of casing 1 It is connected through a screw thread hanging ring 4, hanging ring 4 is sling for whole equipment, and movable pulley 5 is installed in the bottom of casing 1, is moved easily, machine The front of shell 1 is equipped with front door 2, and front door 2 is locked at by door lock 3 on casing 1, and front door 2, which is shut, plays safety protection function, machine The back side installation of shell 1 has a back door connection 6, and back door 6, which is shut, can also play safety protection function, and radiator window 7 is offered on back door 6, lead to Radiator window 7 is crossed to internal electric elements heat dissipation, the inner bottom of casing 1 installs reactor 8, and reactor 8 can reduce short circuit Electric current and the voltage of transcient short circuit time system is made to remain unchanged, constant output current is provided, 1 positive inside of casing is equipped with the One contactor 9, the electric appliance of the control load of first contactor 9, the top of first contactor 9 is equipped with fuse 10, fuse 10 For short circuit and overcurrent protection, the top of fuse 10 breaker 11 is installed, be used for circuit carry out tripping protection, first Contactor 9 and fuse 10 are electrically connected by conducting wire, and fuse 10 is electrically connected breaker 11 by conducting wire, be allowed to be formed one it is complete Whole circuit can export constant electric current, but also can be formed and be protected to circuit, and 1 positive inside of casing is close to edge It is provided with resistance 12, plays metering function, the inside at 1 back side of casing is equipped with mutual inductor 13, and mutual inductor 13 becomes high voltage Low-voltage, high current become low current, for measuring or protecting system, the side of mutual inductor 13 to install Section Bar Heat Sinks 22, use It radiates in IGBT module 19, rectification module 20 and high frequency transformer 21, the front of Section Bar Heat Sinks 22 is equipped with high frequency transformer 21 and rectification module 20, high frequency transformer 21 is used to make high-frequency switch power transformer, rectification module 20 in high frequency switch power Convert exchange to direct current, IGBT module 19 is arranged in the top of high frequency transformer 21, and 19 driving power of IGBT module is small and is saturated Pressure drop is low, and the side installation capacitance 18 and stacking busbar 23 of IGBT module 19, second contactor 14 and IGBT module 19 are electrically connected, IGBT module 19 and stacking busbar 23 are electrically connected, and capacitance 18 and stacking busbar 23 are corresponding with positive resistance 12, form one The another side of a complete line system, IGBT module 19 is installed by second contactor 14, the top installation of second contactor 14 Switching Power Supply 15, the side installation control panel 17 of Switching Power Supply 15, core of the control panel 17 as this D.C. high-current constant-current source, First contactor 9, fuse 10, breaker 11, mutual inductor 13, second contactor 14, Switching Power Supply 15, toroidal transformer 16, Capacitance 18, IGBT module 19, rectification module 20 and high frequency transformer 21 are controlled by control panel 17, can at the back side of casing 1 With operation control panel 17, toroidal transformer 16 is installed in the side of control panel 17, toroidal transformer 16 as power transformer and every From transformer.

In summary：The utility model exports the D.C. high-current constant-current source of constant current, first contactor 9 and fuse 10 are electrically connected by conducting wire, and fuse 10 is electrically connected breaker 11 by conducting wire, and second contactor 14 and IGBT module 19 are electrically connected It connects, IGBT module 19 and stacking busbar 23 are electrically connected, and reactor 8 can reduce short circuit current and make the voltage of transcient short circuit time system Remain unchanged, many output currents be provided, the electric appliance of contactor control load, mutual inductor 13 by high voltage become low-voltage, High current becomes low current, and for measuring or protecting system, 19 driving power of IGBT module is small and saturation pressure reduces rectification module 20 convert exchange AC to direct current DC, and each electric elements, which are electrically connected, is controlled by control panel 17, are allowed to be formed one completely Circuit is allowed to finally export constant electric current.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of D.C. high-current constant-current source of output constant current, including casing (1), it is characterised in that：The casing (1) Top is connected through a screw thread hanging ring (4), the bottom installation movable pulley (5) of casing (1), before the front of the casing (1) is equipped with Door (2), front door (2) are locked at by door lock (3) on casing (1), and the back side installation of the casing (1) has a back door connection (6), back door (6) radiator window (7), the inner bottom installation reactor (8) of the casing (1), the positive inside of the casing (1) are offered on First contactor (9) is installed, fuse (10), the top of the fuse (10) are installed above first contactor (9) Breaker (11) is installed, the positive inside of the casing (1) is provided with resistance (12), casing (1) back of the body close to edge The inside in face is equipped with mutual inductor (13), the side installation Section Bar Heat Sinks (22) of the mutual inductor (13), the proximate matter heat dissipation The front of device (22) is equipped with high frequency transformer (21) and rectification module (20), and IGBT is arranged in the top of the high frequency transformer (21) Module (19), the side installation capacitance (18) and stacking busbar (23) of the IGBT module (19), the IGBT module (19) Another side is installed by second contactor (14), the top installation Switching Power Supply (15) of the second contactor (14), the switch The side installation control panel (17) of power supply (15), the side installation toroidal transformer (16) of control panel (17).

2. a kind of D.C. high-current constant-current source of output constant current according to claim 1, it is characterised in that：Described One contactor (9) and fuse (10) are electrically connected by conducting wire, and fuse (10) is electrically connected breaker (11) by conducting wire.

3. a kind of D.C. high-current constant-current source of output constant current according to claim 1, it is characterised in that：Described Two contactors (14) and IGBT module (19) electrical connection, IGBT module (19) and stacking busbar (23) are electrically connected.

4. a kind of D.C. high-current constant-current source of output constant current according to claim 1, it is characterised in that：The electricity Hold (18) and stacking busbar (23) is corresponding with positive resistance (12).