CN210380225U

CN210380225U - Plug-in type miniature intelligent multifunctional direct current protection equipment

Info

Publication number: CN210380225U
Application number: CN201921417793.1U
Authority: CN
Inventors: 胥飞飞; 翟密利; 汪玲娟
Original assignee: Hangzhou Electric Co ltd
Current assignee: Hangzhou Electric Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-04-21
Anticipated expiration: 2029-08-29

Abstract

The utility model relates to a direct current distribution technical field discloses a multi-functional direct current protection equipment of plug-in miniature intellectuality, and it includes inlet wire plug terminal, protection unit, detection processing unit, leading-out terminal, and inlet wire plug terminal is connected to the load via protection unit, leading-out terminal, and CPU is coupled between detection module and protection unit, when output current or output voltage is higher than corresponding default, CPU output abnormal signal; and the protection unit is connected between the incoming line plugging terminal and the outgoing line terminal, is used for receiving the abnormal signal and responds to the abnormal signal to disconnect the incoming line plugging terminal and the outgoing line terminal. This equipment is through integrating inlet wire plug terminal, protection unit, detection processing unit and outlet terminal in same equipment to possess functions such as modularized design, intelligent management, the space that reduces to occupy, elastic deployment.

Description

Plug-in type miniature intelligent multifunctional direct current protection equipment

Technical Field

The utility model relates to a direct current distribution technical field especially relates to a multi-functional direct current protection equipment of plug-in miniature intellectuality.

Background

With the rapid development of new energy, the major trend of 5G network multi-operator co-building infrastructure and the rapid increase of direct current load, direct current power distribution gets more and more attention, the direct current power distribution network is superior to alternating current power distribution, and the direct current power distribution network has the advantages of economy, high efficiency, reliability, direct hanging of energy storage units and the like, and is the development trend of future power distribution.

However, for direct current distribution, generally, independent devices are adopted for the protection operation function and the measurement function respectively, so that unified management cannot be achieved, and because each independent device is installed respectively, the independent devices are connected by using a wire, so that a large space is occupied, pain points which are difficult to realize uninterrupted maintenance are brought to later-stage maintenance, overhaul and the like, and even major accidents of service interruption can be caused. In addition, the capacity expansion is difficult to realize modular deployment, capacity expansion cannot be realized as required, excessive investment is advanced, and intelligent partitioning and intelligent energy consumption management cannot be realized aiming at an application scene of multi-user shared power distribution.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model aims to provide an intelligent multi-functional direct current protective equipment of plug-in miniature, it is through being integrated inlet wire plug terminal, protection unit, detection and processing unit and leading-out terminal in same equipment, and the modularized design lets direct current distribution possess the function of little volume, ability dilatation, elastic deployment, intelligent subregion as required.

The purpose of the utility model is realized by adopting the following technical scheme:

a plug-in type miniature intelligent multifunctional direct current protection device comprises an incoming line plug-in terminal, a protection unit, a detection processing unit and an outgoing line terminal, wherein the incoming line plug-in terminal is connected to a load through the protection unit and the outgoing line terminal, the detection processing unit comprises a CPU and a detection module,

the detection module is connected between the inlet wire plugging terminal and the protection unit and is used for detecting the output voltage and the output current of the inlet wire plugging terminal;

the CPU is coupled between the detection module and the protection unit and outputs an abnormal signal when the output current or the output voltage is higher than a corresponding preset value;

and the protection unit is connected between the incoming line plugging terminal and the outgoing line terminal, is used for receiving the abnormal signal and responds to the abnormal signal to disconnect the incoming line plugging terminal and the outgoing line terminal.

Preferably, the incoming line plug terminal is located at the rear end of the housing and is connected with a direct current source in a plug manner, and the outgoing line terminal is located at the front end of the housing.

Preferably, the protection unit comprises a switching tube and a trigger module, wherein the switching tube is provided with a positive end, a negative end and a control end, and the voltage of the positive end is higher than that of the negative end;

the positive end is coupled to the inlet wire plug terminal, and the negative end is coupled to the terminal that goes out the line, CPU's output is coupled via trigger module in the control end of switch tube.

Preferably, an optocoupler U12 is further connected between the trigger module and the switch tube, a phototransistor included in the optocoupler U12 is coupled between a control electrode of the switch tube and ground, and the trigger module controls on/off of a light emitting diode included in the optocoupler U12.

Preferably, the trigger module comprises a transistor Q3, a resistor R32, a resistor R33, a resistor R30, a capacitor C34 and a capacitor C33,

the capacitor C33 and the capacitor C34 are connected in parallel between a voltage source and ground, the resistor R30 is connected in series between the voltage source and an anode of a diode included in an optocoupler U12, a collector of the transistor Q3 is coupled to a cathode of a diode included in the optocoupler U12, the resistor R32 is connected in series between an output terminal of the CPU and a base of the transistor Q3, and the resistor R33 is connected in series between a base of the transistor Q3 and ground.

Preferably, the CPU is further connected with a display unit, and the display unit is used for displaying the working state of the device.

Preferably, the CPU is further connected with a communication unit for uploading data.

Preferably, the CPU is in data connection with an upper computer.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) through with inlet wire plug terminal, protection unit, detection processing unit and outlet terminal integration in same equipment to reduce the space that occupies, still replace the installation of a plurality of independent devices through installing this equipment, with improvement installation effectiveness.

(2) The functions of capacity expansion, flexible deployment and intelligent partitioning are realized as required by arranging the CPU, so that multi-user power distribution and multi-user energy management are facilitated.

(3) Through setting up inlet wire plug terminal to be convenient for maintain this equipment fast.

Drawings

FIG. 1 is a schematic structural view of the apparatus of the present invention;

FIG. 2 is a system block diagram of the apparatus of the present invention;

fig. 3 is a circuit diagram of a partial structure in fig. 2.

In the figure: 1. a direct current source; 2. a wire inlet plugging terminal; 3. a protection unit; 31. a triggering module; 4. a detection processing unit; 41. a CPU; 42. a detection module; 5. an outlet terminal; 6. a communication unit; 7. a display unit; 8. a load; 9. an apparatus.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

The utility model aims at providing a multi-functional DC protective equipment of plug-in miniature intellectuality, this equipment 9 is integrated in same equipment through with inlet wire plug terminal 2, protection unit 3, detection processing unit 4 and leading-out terminal 5 to reduce the space that occupies, still replace the installation of a plurality of independent devices through installing this equipment 9, in order to improve the installation effectiveness.

Specifically, referring to fig. 1, 2 and 3, the device 9 includes an incoming line plug terminal 2, a protection unit 3, a detection processing unit 4, an outgoing line terminal 5 and a housing, a circuit board is further disposed in the housing, and the incoming line plug terminal 2, the protection unit 3, the detection processing unit 4 and the outgoing line terminal 5 are all located in the housing and connected through the circuit board.

The incoming line plug terminal 2 is connected with the direct current source 1 in a plug mode and used for introducing direct current, the direct current flows to the load 8 through the protection unit 3 and the outgoing line terminal 5, and the incoming line plug terminal 2, the protection unit 3, the outgoing line terminal 5 and the load 8 are connected in sequence.

It is worth to say that the inlet wire plug terminal 2 is located at the rear end of the equipment, and the outlet wire terminal 5 is located at the front end of the equipment, so that the direct current can go back and forth, and the equipment can be conveniently installed and maintained. Wherein the front end of the device is provided with a handle, a display lamp and the like.

The detection processing unit 4 is connected with the inlet wire plugging terminal 2 and the protection unit 3, and the detection processing unit 4 can comprise a detection module 42 and a CPU 41. The functions of capacity expansion, flexible deployment and intelligent partitioning are realized as required by arranging the CPU, so that multi-user power distribution and multi-user energy management are facilitated.

The detection module 42 includes a voltage detection circuit and a current detection circuit, the voltage detection circuit is used for detecting the output voltage of the incoming line plug terminal 2, the voltage detection circuit is used for detecting the output current of the incoming line plug terminal 2, and the output ends of the current detection circuit and the voltage detection circuit are respectively connected to the CPU 41. It should be noted that the device 9 may further include an energy metering chip, and the output ends of the current detection circuit and the voltage detection circuit may be connected to corresponding pins of the energy metering chip, so as to obtain the consumed power at the output end of the plug-in terminal, where the energy metering chip is preferably RN 8302.

The input end of the CPU 41 receives information of the output current and the output voltage, and when the output current or the output voltage is higher than a corresponding preset value, the CPU 41 outputs an abnormal signal, and at this time, the device may be an overcurrent, an overvoltage, an undervoltage, a remote signal control, or the like.

The protection unit 3 is used for receiving the abnormal signal and responding to the abnormal signal to disconnect the inlet wire plugging terminal 2 and the outlet wire terminal 5. The protection unit 3 comprises a switch tube, a trigger module 31 and an optical coupler U12, wherein the switch tube is provided with a positive end, a negative end and a control end, and the voltage of the positive end is higher than that of the negative end.

The switching tube is preferably a depletion type P-channel MOS tube Q1, namely the positive end, the negative end and the control end of the switching tube are equivalent to the drain electrode, the source electrode and the grid electrode of the MOS tube Q1. Therefore, the drain of the MOS transistor Q1 is coupled to the incoming line plug terminal 2, the source is coupled to the outgoing line terminal 5, and the gate is coupled to the output terminal of the CPU 41 via the trigger module 31 and the optocoupler U12.

It should be noted that the optocoupler U12 includes a light emitting diode and a phototransistor, the collector of the phototransistor included in the optocoupler U12 is coupled to the gate of the MOS transistor Q1, the emitter is grounded, and a resistor R28 is connected in series between the drain and the gate of the MOS transistor Q1.

The trigger module 31 includes a transistor Q3, a resistor R32, a resistor R33, a resistor R30, a capacitor C34, and a capacitor C33. The capacitor C33 and the capacitor C34 are connected in parallel between a voltage source and the ground; the resistor R30 is connected in series between a voltage source and the anode of a diode contained in the optocoupler U12; the collector of the transistor Q1 is coupled to the cathode of the diode contained in the optocoupler U12, the resistor R32 is connected in series between the output terminal of the CPU 41 and the base of the transistor Q3, and the resistor R33 is connected in series between the base of the transistor Q3 and the ground.

When the output current of the outgoing line terminal 5 is greater than the preset value, the output end of the CPU 41 outputs an abnormal signal and transmits the abnormal signal to the trigger module 31, so that the triode Q3 is turned on, the optocoupler U12 is turned on, and the MOS transistor Q1 is triggered to be turned off, so that the connection relationship between the outgoing line terminal 5 and the incoming line plug terminal 2 is turned off, and not only overcurrent protection is realized, but also reuse is realized through the MOS transistor Q1.

In order to store the data of the device 9, the device 9 is further provided with a communication unit 6, the communication unit 6 is connected with the CPU 41 to store the current, voltage, overload and the like of the device 9 in real time, and the communication unit 6 preferably adopts an existing RS485 circuit.

In order to enable the user to further know the working state of the equipment, the equipment 9 further comprises a display unit 7, the display unit 7 is connected with the output end of the CPU 41, and the display unit 7 is preferably a signal lamp, and the working state of the equipment can be quickly known through the on-off of the signal lamp.

Wherein the communication unit 6 is mounted in the housing and the display unit 7 is mounted on the outer surface of the housing, so that the device 9 has the advantages of small volume, multiple functions and intellectualization. The CPU can also be in data connection with an upper computer, so that software distribution users, remote adjustment and intelligent management can be realized.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A plug-in type miniature intelligent multifunctional direct current protection device is characterized by comprising an incoming line plug-in terminal, a protection unit, a detection processing unit and an outgoing line terminal, wherein the incoming line plug-in terminal is connected to a load through the protection unit and the outgoing line terminal, the detection processing unit comprises a CPU and a detection module,

2. The pluggable miniature intelligent multifunctional direct current protection device as claimed in claim 1, wherein the device has a housing, the incoming plug terminal is located at the rear end of the housing and is connected with a direct current source in a plug manner, and the outgoing terminal is located at the front end of the housing.

3. The pluggable miniature intelligent multifunctional direct current protection device as claimed in claim 1, wherein the protection unit comprises a switching tube and a trigger module, the switching tube has a positive end, a negative end and a control end, wherein the voltage of the positive end is higher than that of the negative end;

4. The pluggable miniature intelligent multifunctional direct current protection device as claimed in claim 3, wherein an optocoupler U12 is further connected between the trigger module and the switch tube, a phototransistor contained in the optocoupler U12 is coupled between a control electrode of the switch tube and ground, and the trigger module controls on/off of a light emitting diode contained in the optocoupler U12.

5. The pluggable miniature intelligent multifunctional direct current protection device as claimed in claim 4, wherein the trigger module comprises a transistor Q3, a resistor R32, a resistor R33, a resistor R30, a capacitor C34 and a capacitor C33,

6. The pluggable miniature intelligent multifunctional direct current protection device as claimed in any one of claims 1 to 5, wherein the CPU is further connected with a display unit, and the display unit is used for displaying the working state of the device.

7. The pluggable miniature intelligent multifunctional direct current protection device as claimed in any one of claims 1 to 5, wherein the CPU is further connected with a communication unit for uploading data.

8. The pluggable miniature intelligent multifunctional direct current protection device as claimed in any one of claims 1 to 5, wherein the CPU is in data connection with an upper computer.