CN206059131U - A kind of potential device with overcurrent protection function - Google Patents

Abstract

The utility model discloses a kind of potential device with overcurrent protection function; including attaching plug, transformator and breaker assembly; the breaker assembly includes multiple choppers of parallel connection; the transformator includes primary coil and secondary coil; two terminals of the attaching plug are electrically connected the two ends of the primary coil, are provided with multiple taps between the second end of the first end and the secondary coil of the secondary coil.The potential device that this utility model embodiment is provided; when breaker assembly sense the electric current of secondary side circuit increase to have potential safety hazard when; secondary side circuit is cut off directly; to avoid fire, damage equipment etc.; overcurrent protection can be played a part of; traditional board design is compared, cost is relatively low, smaller.

Description

A kind of potential device with overcurrent protection function

Technical field

This utility model is related to transformer technology field, more particularly to a kind of potential device with overcurrent protection function.

Background technology

The rated voltage of many electrical equipments on the market is not line voltage, and these electrical equipments are typically necessary logical Cross transformator and carry out buck or boost and be powered.And be to ensure Electrical Safety, transformator is typically necessary setting in secondary side Output protection circuit, which is used for during transformator abnormal running, has safety when secondary side current or temperature increase to During hidden danger, cut off secondary side circuit to avoid fire, damage equipment etc..

Existing Circuit Fault on Secondary Transformer output protection circuit, typically by a control circuit, controls the circuit of secondary side Break-make；When control circuit is sensed the electric current or temperature of secondary side circuit have abnormal when, for example when secondary side current exceed it is pre- During definite value, secondary side circuit is cut off immediately.The shortcoming of the program is：There is complicated cumbersome control circuit, cost of manufacture is high, while The circuit board that circuit is located also could be installed than larger space.

Utility model content

The purpose of this utility model is to provide a kind of potential device with overcurrent protection function, solves above technology Problem.

It is that, up to this purpose, this utility model is employed the following technical solutions：

A kind of potential device with overcurrent protection function, including：Attaching plug, transformator and breaker assembly；It is described Breaker assembly includes multiple choppers of parallel connection；The transformator includes primary coil and secondary coil；

Two terminals of the attaching plug are electrically connected the two ends of the primary coil；The first of the secondary coil Multiple taps are provided between end and the second end of the secondary coil；The first end electrical connection of the secondary coil is described disconnected The first end of road device assembly；Second end of the secondary coil or the tap electrically connect the first end of electrical equipment；Electricity consumption Second end of equipment electrically connects the second end of the breaker assembly.

Preferably, the model of multiple choppers is identical.

Preferably, light-operated switch is also electrically connected between the attaching plug and the primary coil.

Preferably, electric fuse is also electrically connected between the light-operated switch and the primary coil.

Preferably, master control is also electrically connected between the first end of the first end of the secondary coil and the breaker assembly Switch.

Preferably, the electrical equipment includes the LED of multiple parallel connections.

The beneficial effects of the utility model：The potential device that this utility model embodiment is provided, it is only necessary in transformer secondary Lateral circuit composes in parallel breaker assembly, then the power supply circuits for being connected in series to Circuit Fault on Secondary Transformer using two or more choppers In, when breaker assembly sense the electric current of secondary side circuit increase to have potential safety hazard when, directly cut off secondary side circuit, with Avoid fire, damage equipment etc., overcurrent protection can be played a part of, traditional board design is compared, cost is relatively low, chi It is very little less.

Description of the drawings

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid Put, can be with according to these other accompanying drawings of accompanying drawings acquisition.

The circuit structure diagram of the potential device with overcurrent protection function that Fig. 1 is provided for this utility model embodiment.

In figure：

10th, attaching plug；20th, light-operated switch；30th, transformator；40th, breaker assembly；50th, master control switch；60th, illumination sets It is standby.

Specific embodiment

To enable utility model purpose of the present utility model, feature, advantage more obvious and understandable, below will knot The accompanying drawing in this utility model embodiment is closed, the technical scheme in this utility model embodiment is clearly and completely described, Obviously, the embodiments described below are only a part of embodiment of this utility model, and not all embodiment.Based on this reality With the embodiment in new, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of this utility model protection.

The technical solution of the utility model is further illustrated below in conjunction with the accompanying drawings and by specific embodiment.

Refer to Fig. 1, the structure of the potential device with overcurrent protection function that Fig. 1 is provided for this utility model embodiment Schematic diagram.The potential device is specifically included：Attaching plug 10, light-operated switch 20, electric fuse FU, transformator 30 and breaker assembly 40。

Wherein, breaker assembly 40 is made up of multiple choppers in parallel, and multiple choppers are preferably same model Chopper.

The breaking capacity of single chopper is limited, in the application scenarios of some high current electrical equipments, according to single Chopper, the breaking capacity of required chopper are also big, and certainly, price is also very high, and the present embodiment is less using multiple pitch capabilities The mode that shunted of chopper parallel connection, you can make breaker assembly 40 realize larger breaking capacity, greatly can reduce into This.

Specifically, transformator 30 includes primary coil and secondary coil；The second terminals electrical connection light of attaching plug 10 First terminals of control switch 20；Second terminals of light-operated switch 20 electrically connect the first end of electric fuse；Attaching plug 10 First terminals electrically connect the second end of the primary coil；Second end of electric fuse electrically connects the first of the primary coil End.

In the present embodiment, the electrical equipment is made up of multiple LEDs in parallel, is mainly used in night lighting.In transformation Device secondary side or second coil side arrange light-operated switch 20, can determine that transformator 30 is automatically according to the brightness of LED places environment It is no to need to carry out voltage output, it is very convenient.Specially：

When night, light was weaker, light-operated switch 20 is closed, and the primary coil of transformator 30 connects power supply, Jin Erwei Electrical equipment 60 provides output voltage；When daytime, light was stronger, light-operated switch 20 disconnects, power supply and transformator 30 just The connection of level coil disconnects, the not output voltage of transformator 30.

Specifically, multiple taps are provided between the first end of the secondary coil and the second end；The secondary coil First end electrically connect breaker assembly 40 first end；Second end of the secondary coil or tap electrical connection electricity consumption The first end of equipment 60；Second end of electrical equipment 60 electrically connects the second end of breaker assembly 40.

In the present embodiment, the output voltage of different taps is different, can be according to voltage different in circuit or electric current need Ask, the second end of the different taps of selection or the secondary coil is connected to the first end of electrical equipment 60.

Preferably, also it is electrically connected with master control to open between the first end of the first end of the secondary coil and breaker assembly 40 Close 50.User can be manually switched off or be opened by master control switch 50 voltage output of transformator 30.

The potential device that this utility model embodiment is provided, it is only necessary in Circuit Fault on Secondary Transformer, i.e., in the secondary coil one Side composes in parallel breaker assembly 40, then the power supply circuits for being connected in series to Circuit Fault on Secondary Transformer using two or more choppers In；Traditional board design is compared, this programme eliminates the protection circuits such as common secondary circuit and main circuit, reduces research and development And material cost, due to eliminating major and minor protection circuit, therefore the circuit board of correlation is also eliminated, and saves installing space, phase That what is answered also just reduces finished size, and the cost of chopper is relatively low, undoubtedly reduces production cost.

In description of the present utility model, it is to be understood that the orientation or position of the instruction such as term " first end ", " the second end " The relation of putting be based on the orientation or position relationship shown in Fig. 1, wherein, " first end " is the left end in figure or upper end, " the second end " for the right-hand member in figure or lower end, it is for only for ease of description this utility model and simplifies description, rather than indicate or imply indication Circuit or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality New restriction.

The above, above example only to illustrate the technical solution of the utility model, rather than a limitation；Although ginseng This utility model is described in detail according to previous embodiment, it will be understood by those within the art that：Which is still Technical scheme described in foregoing embodiments can be modified, or equivalent is carried out to which part technical characteristic and replace Change；And these modifications or replacement, do not make the essence of appropriate technical solution depart from each embodiment technical scheme of this utility model Spirit and scope.

Claims (5)

1. a kind of potential device with overcurrent protection function, it is characterised in that including attaching plug, transformator and chopper group Part；The breaker assembly includes multiple choppers of parallel connection；The transformator includes primary coil and secondary coil；

Two terminals of the attaching plug are electrically connected the two ends of the primary coil；The first end of the secondary coil and Multiple taps are provided between second end of the secondary coil；The first end of the secondary coil electrically connects the chopper The first end of component；Second end of the secondary coil or the tap electrically connect the first end of electrical equipment；Electrical equipment The second end electrically connect the second end of the breaker assembly.

2. potential device according to claim 1, it is characterised in that between the attaching plug and the primary coil also It is electrically connected with light-operated switch.

3. potential device according to claim 2, it is characterised in that between the light-operated switch and the primary coil also It is electrically connected with electric fuse.

4. potential device according to claim 3, it is characterised in that the first end of the secondary coil and the chopper Master control switch is electrically connected between the first end of component also.

5. potential device according to claim 1, it is characterised in that the electrical equipment includes the LEDs of multiple parallel connections.