Distribution box with 2U direct current distribution module

Abstract

The utility model relates to a power distribution box with a 2U DC power distribution module. The power distribution box comprises a box body, the 2U DC power distribution module and an external interface. The 2U direct-current power distribution modules are located in the power distribution box with the 2U direct-current power distribution modules, and the power distribution box with the 2U direct-current power distribution modules comprises ten 2U direct-current power distribution modules. The 2U DC power distribution module comprises an RS485 communication interface, a GND and Vin input interface, a GND and Vout output interface, a control switch, a first display nixie tube, a second display nixie tube, a metering test terminal positive electrode and a metering test terminal negative electrode. An input +, an input-, an RS485 communication interface and an output interface are arranged at the back of the distribution box with the 2U direct-current distribution module; the direct current distribution module in the 2U direct current distribution resistor has local and remote control functions. An output channel can be controlled locally to realize voltage and current display and test metering; an output channel can be remotely controlled, voltage and current data can be read, and overvoltage and overcurrent values can be set. In addition, the module adapts to a standard 19-inch 2U distribution box with a 2U direct current distribution module, and rapid integration of multiple paths of distribution modules is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to test measurement field especially, relate to a distribution box with 2U direct current distribution module. BACKGROUND

[0002] The existing direct current distribution box with 2U direct current distribution module does not have remote function, the existing direct current distribution box with 2U direct current distribution module adopts fuse or safety tube for passage protection function, and its protection value is single, cannot be set according to actual power load, and the existing direct current distribution box with 2U direct current distribution module only has local control function, does not have local display and metering function. INVENTION CONTENTS

[0003] In view of the prior art deficiency, the utility model provides a distribution box with 2U direct current distribution module, has local and remote control function.Local control output channel, realize voltage, current display and test metering, remote control output channel, read voltage and current data, and overvoltage and overcurrent value can be set.The problem raised in the background art is solved.

[0004] The utility model provides the following technical scheme: 1, a distribution box with 2U direct current distribution module, its characterized in that, including box, 2U direct current distribution module and external interface,

[0005] 2U direct current distribution module is located in the inside of the distribution box with 2U direct current distribution module box body, and the distribution box with 2U direct current distribution module includes 10 2U direct current distribution modules;

[0006] 2U direct current distribution module rear portion includes RS485 communication interface, GND and Vin input interface, GND and Vout output interface, and 2U direct current distribution module front portion includes control switch, local voltage measurement module, local current measurement module, first display nixie tube, second display nixie tube, metering test terminal positive and metering test terminal negative;

[0007] One end of control switch is connected with the Vin input interface in the inside of 2U direct current distribution module, and the other end is connected with the power GND input interface of 2U direct current distribution module, first display nixie tube and second display nixie tube are connected with driving circuit through pin, metering test terminal positive is connected with the Vout output interface of 2U direct current distribution module, and metering test terminal negative is connected with the GND output interface of 2U direct current distribution module;

[0008] The external interface of the power distribution box with the 2U direct current power distribution module comprises an input +, an input -, an RS485 communication interface and an output interface, the input + is connected with a Vin input interface of the 2U direct current power distribution module in parallel, the input - is connected with a GND input interface of the 2U direct current power distribution module in parallel, the RS485 communication interface is connected with an RS485 communication interface of the 2U direct current power distribution module in parallel, and the output interface is connected with a GND and a Vout output interface of the 2U direct current power distribution module.

[0009] In one of the utility model examples, the RS485 communication interface of the 2U direct current power distribution module is connected with an RS485 chip.

[0010] In one of the utility model examples, the local voltage measurement module and the local current measurement module input measurement signals into a first display nixie tube and a second display nixie tube respectively.

[0011] In one of the utility model examples, the power distribution box with the 2U direct current power distribution module comprises a programmable logic controller, and the programmable logic controller is connected with the 2U direct current power distribution module in communication.

[0012] In one of the utility model examples, the measurement test terminal positive pole and the measurement test terminal negative pole adopt a plug-in type round hole structure.

[0013] In one of the utility model examples, the GND and Vin input interface and the GND and Vout output interface are provided with sealing rubber rings.

[0014] In one of the utility model examples, the 2U direct current power distribution module comprises a surge protector, and the surge protector is connected between the Vin input interface and the GND input interface.

[0015] In one of the utility model examples, a filter circuit is arranged between the input + and the input - of the external interface.

[0016] In one of the utility model examples, the box body is made of stainless steel.

[0017] In one of the utility model examples, the output interface of the external interface is provided with an overvoltage protection circuit and an overcurrent protection circuit.

[0018] The utility model has the advantages of:

[0019] The 2U direct current power distribution module has local and remote control functions. The local control output channel can realize voltage and current display and measurement; the remote control output channel can read voltage and current data, and overvoltage and overcurrent values can be set. In addition, the module is adapted to the standard 19-inch 2U power distribution box with the 2U direct current power distribution module, and is convenient for rapid integration of multiple power distribution modules. Attached Figure Description

[0020] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0021] Figure 1 A top view of a distribution box with a 2U DC power distribution module according to an embodiment of the present invention is shown;

[0022] Figure 2 This is a front view of a distribution box with a 2U DC power distribution module according to an embodiment of the present invention;

[0023] Figure 3 A rear view of a distribution box with a 2U DC power distribution module according to an embodiment of the present invention is shown;

[0024] Figure 4 This shows a front view of the DC power distribution module of embodiment 2U of the present invention;

[0025] Figure 5 The rear view of the DC power distribution module of Embodiment 2U of this utility model is shown;

[0026] Figure 6 This diagram illustrates the schematic of a DC power distribution module according to an embodiment of the present invention.

[0027] Figure 7 This diagram illustrates the RS485 schematic of an embodiment of the present invention. Detailed Implementation

[0028] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0029] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of technical features. Thus, features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0031] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0032] In addition, in order to better illustrate the present application, a large number of specific details are given in the specific embodiments below. Those skilled in the art should understand that the present application can also be implemented without certain specific details. In some examples, methods, means, elements and circuits well known to those skilled in the art are not described in detail, in order to highlight the main ideas of the present application.

[0033] The utility model relates to a 2U direct current distribution resistance, applied in the test measurement field, plays the function of local control, display and measurement and remote control, data reading and protection value setting.

[0034] Specific reference Figures 1-6 As a specific embodiment of the utility model discloses a power distribution box with 2U direct current distribution module, the power distribution box with 2U direct current distribution module 100 includes box body 110, 2U direct current distribution module 120 and external interface 130, it is pointed out that the power distribution box with 2U direct current distribution module 100 is composed of box body 110, 2U direct current distribution module 120 and external interface 130 these key parts, 2U direct current distribution module 120 is located in the inside of the power distribution box with 2U direct current distribution module 100 box body 110, the power distribution box with 2U direct current distribution module 100 includes 10 2U direct current distribution module 120, the positional relationship of 2U direct current distribution module 120 and the power distribution box with 2U direct current distribution module 100 is described, 2U direct current distribution module 120 is installed in the front of the power distribution box with 2U direct current distribution module 100, 1 2U power distribution box with 2U direct current distribution module 100 can accommodate 10 2U direct current distribution module 120, as Figure 3 And Figure 5 As shown, it can be seen that 2U direct current distribution module is in the front of the power distribution box with 2U direct current distribution module 100, 1 2U power distribution box with 2U direct current distribution module 100 installs 10 direct current distribution modules 120.

[0035] 2U DC power distribution module 120 rear part includes RS485 communication interface 511, GND and Vin input interface 512, GND and Vout output interface 513, 2U DC power distribution module 120 front part includes control switch 403, local voltage measurement module, local current measurement module, first display nixie tube 401, second display nixie tube 402, metering test terminal positive 404 and metering test terminal negative 405, describes the specific components contained in the front and rear of 2U DC power distribution module 120. The back of the module is provided with external interface 510, RS485 communication interface 511 for remote communication, and GND and Vin input interface 512 for connecting external power supply, and GND and Vout output interface 513 for outputting power to external equipment. The front of the module is arranged with control switch 403 for local control, local voltage measurement module and local current measurement module for measuring local voltage and current, and first display nixie tube 401 and second display nixie tube 402 for displaying measurement results, in addition, metering test terminal positive 404 and metering test terminal negative 405 for local metering test are also provided.

[0036] Further, as shown in Figure 2 , 510 is the external interface of 2U DC power distribution module 120, wherein the left side A and B are respectively RS485 communication interface 511, the middle GND and Vin are input interface 512, and the right side GND and Vout are output interface 513. Remote control of 2U DC power distribution module 120 is realized through RS485 communication interface 511. When the remote control is closed, the control switch 403 indicator light will also be always on, and the first display nixie tube 401 will also display the output voltage value, and the second display nixie tube 402 will also display the real-time current value.

[0037] Further, as shown in Figure 1 , 403 is the control switch. When the control switch 403 is closed, the DC power distribution module 120 starts to output, and the indicator light of the control switch 403 is always on. When the control switch is opened, the DC power distribution module 120 stops outputting, and the indicator light of the control switch 403 is extinguished. 401 is the first display nixie tube corresponding to the local voltage test module for displaying the local voltage. 402 is the second display nixie tube corresponding to the local current test module for displaying the local current. When the control switch 403 is closed, the display nixie tube is lit, the first display nixie tube 401 displays the voltage value output by the DC power distribution module, and the second display nixie tube 402 displays the real-time current value of the load. When the control switch 403 is opened, the display nixie tube is extinguished. 404 is the metering test terminal positive, and 405 is the metering test terminal negative.

[0038] One end of the control switch 403 is connected with the Vin input interface 512 inside the 2U direct current power distribution module 120, and the other end is connected with the power GND input interface 512 of the 2U direct current power distribution module 120. The first display nixie tube 401 and the second display nixie tube 402 are connected with the driving circuit through pins. The positive pole of the measurement test terminal 404 is connected with the Vout output interface 513 of the 2U direct current power distribution module 120, and the negative pole of the measurement test terminal 405 is connected with the GND output interface 513 of the 2U direct current power distribution module 120. The control switch 403 is connected between the Vin input interface 512 and the power GND input interface 512. By closing and opening the control switch 403, whether the direct current power distribution module 120 obtains power from the Vin input interface 512 can be controlled, and then the output of the module is controlled. The first display nixie tube 401 and the second display nixie tube 402 are connected with the driving circuit through pins. The driving circuit provides the driving signal required for the display of the nixie tube, so that the voltage and current values measured by the local voltage measurement module and the local current measurement module can be normally displayed. The positive pole of the measurement test terminal 404 is connected with the Vout output interface 513, and the negative pole of the measurement test terminal 405 is connected with the GND output interface 513.

[0039] The external interface 130 of the power distribution box 100 with the 2U direct current power distribution module includes an input + 131, an input - 132, an RS485 communication interface 133 and an output interface 134. The input + 131 is connected with the Vin input interface 512 of the 2U direct current power distribution module 120 in a parallel manner. The input - 132 is connected with the GND input interface 512 of the 2U direct current power distribution module 120 in a parallel manner. The RS485 communication interface 133 is connected with the RS485 communication interface 511 of the 2U direct current power distribution module 120 in a parallel manner. The output interface 134 is connected with the GND and Vout output interfaces 513 of the 2U direct current power distribution module 120. The input + 131 and the input - 132 behind the power distribution box 100 with the 2U direct current power distribution module are connected with the Vin and GND input interfaces 512 of the 2U direct current power distribution module 120 in a parallel manner. This parallel connection manner can make the power distribution box with the 2U direct current power distribution module simultaneously provide a unified input power for multiple 2U direct current power distribution modules 120. The RS485 communication interface 133 is connected with the RS485 communication interface 512 of the 2U direct current power distribution module 120 in a parallel manner, which realizes the remote communication connection between the power distribution box 100 with the 2U direct current power distribution module and multiple 2U direct current power distribution modules 120, and facilitates unified remote control, data reading and other operations. The output interface 134 is connected with the GND and Vout output interfaces 513 of the 2U direct current power distribution module 120, so that the power output by the 2U direct current power distribution module can be transmitted to external power equipment through the output interface of the power distribution box with the 2U direct current power distribution module.

[0040] Further, as shown in Figure 4 the left side is the input interface of the power distribution box 100 with 2U DC power distribution modules, the inside of the power distribution box 100 with 2U DC power distribution modules is divided into 10 paths and connected to 10 2U DC power distribution modules 120 respectively, the input +131 is connected to Vin513, the input —132 is connected to GND input interface 512, the outside of the power distribution box 100 with 2U DC power distribution modules is used to connect the output of the DC power supply, the middle is the RS485 communication interface 133, the internal wiring of the power distribution box 100 with 2U DC power distribution modules is as shown in Figure 7 the left side is the input interface of the power distribution box 100 with 2U DC power distribution modules, the inside of the power distribution box 100 with 2U DC power distribution modules is divided into 10 paths and connected to 10 2U DC power distribution modules 120 respectively, the input +131 is connected to Vin513, the input —132 is connected to GND input interface 512, the outside of the power distribution box 100 with 2U DC power distribution modules is used to connect the output of the DC power supply, the middle is the RS485 communication interface 133, the internal wiring of the power distribution box 100 with 2U DC power distribution modules is as shown in

[0041] In this example, the RS485 communication interface 511 of the 2U DC power distribution module 120 is connected to the RS485 chip, and the RS485 communication interface 511 realizes remote reading of the voltage value and real-time current value output by the DC power distribution module 120.

[0042] In this example, the local voltage measurement module and the local current measurement module input the measurement signals into the first display nixie tube 401 and the second display nixie tube 402 respectively, the local voltage measurement module measures and processes the voltage signal through specific connection and principle, and the local current measurement module measures the current signal in the same way. The processed voltage and current digital signals are input into the corresponding nixie tubes through anti-interference transmission lines, and the control circuit is encoded and driven to display.

[0043] In this example, the power distribution box with 2U DC power distribution modules includes a programmable logic controller, which is connected in communication with the 2U DC power distribution module 120, and can set the protection value of the output voltage and current of the DC power distribution module according to the demand of the electrical equipment. When the voltage is higher than the set overvoltage value or lower than the set undervoltage value, the DC power distribution will be cut off in time to protect the electrical equipment; when the DC power distribution module detects that the real-time current value is higher than the set current protection value, it will also be cut off in time to protect the electrical equipment. The protection value can be set to any value within the allowable range of the DC power distribution module.

[0044] In this example, the metering test terminal positive pole 404 and the metering test terminal negative pole 405 adopt a plug-in round hole structure, which is convenient for connecting with external test equipment, facilitating rapid and accurate electrical parameter measurement. In actual operation, the plug-in structure can ensure the stability of the connection, and is also convenient for maintenance and replacement of test equipment. The positive pole of the multimeter test wire is connected with the metering test terminal positive pole 404, and the negative pole of the multimeter test wire is connected with the metering test terminal negative pole 405. The multimeter is used to test the DC power distribution module metering or output voltage. When it is necessary to test the DC power distribution module metering or output voltage, the positive pole of the multimeter test wire can be inserted into the metering test terminal positive pole 404, and the negative pole of the multimeter test wire can be inserted into the metering test terminal negative pole 405. It is checked whether the test value of the multimeter is consistent with the voltage display value of the first display nixie tube 401 in the 2U DC power distribution module 120.

[0045] In this example, the GND and Vin input interface 512 and the GND and Vout output interface 513 are provided with a sealing rubber ring. The sealing rubber ring prevents dust, moisture and other impurities from entering the interface, thereby ensuring the stability of the electrical performance of the interface and prolonging the service life of the equipment. When installing the interface, it is necessary to ensure that the sealing rubber ring is installed correctly without damage or deformation.

[0046] In this example, the 2U DC power distribution module 120 includes a surge protector connected between the Vin input interface 512 and the GND input interface 512. When a surge voltage occurs in the circuit, the surge protector can quickly act to discharge the surge energy to the ground, thereby protecting the subsequent equipment from damage caused by the surge impact. The selection of the surge protector should be reasonably selected according to the actual use environment and circuit requirements.

[0047] In this example, a filter circuit is provided between the input + and input - of the external interface, which can improve the power quality, smooth the DC voltage, reduce high-frequency interference, protect the 2U DC power distribution module 120 from overvoltage damage and prolong the service life of the module, and also improve the system stability, reduce signal interference and ensure the accuracy of metering.

[0048] In this example, the box body 110 is made of stainless steel, which has good corrosion resistance and mechanical strength, can effectively protect the internal equipment from the influence of the external environment, and is also convenient for cleaning and maintenance.

[0049] In this example, the output interface of the external interface is provided with overvoltage protection circuit and overcurrent protection circuit, the overvoltage protection of the output interface of the external interface can be realized by connecting a Zener diode with a breakdown voltage slightly higher than the normal working voltage in parallel between the power supply line and the ground line, using an overvoltage protection integrated circuit to accurately monitor and control the switching element, connecting a voltage-dependent resistor whose resistance value drops sharply to discharge energy when overvoltage occurs; overcurrent protection is realized by connecting a fuse in series, combining a current detection resistor and a comparator, triggering the comparator to protect when the current is too large, and using an overcurrent protection chip to integrate multiple functions and automatically protect. These protection circuits can ensure the safety of the equipment, prolong the service life, improve the stability of the system, enhance the competitiveness of the product, and also make the product meet the relevant safety specifications.

[0050] Further, as shown in Figure 6 The external power supply is connected through the "input" port, and the electric energy is used to supply power to the power supply circuit, which converts and stabilizes the voltage to provide stable DC voltage for each module; on the other hand, it is connected to the MOS tube. The MOS tube realizes the control of the on-off of the electric energy under the driving of the control circuit, and the analog quantity acquisition collects the voltage and current parameters of the output electric energy in real time and feeds back to the processor. The processor as the core, after processing and analyzing the data, transmits it to the voltage and current display module to realize local display, receives local control instructions to control the MOS tube and displays the working state through the indicator light, and also communicates with the upper computer through the RS485 interface, receives remote instructions, sets protection values and uploads data, and the RS485 interface ensures the reliability of remote communication. The indicator light of the local control provides local operation and state prompt.

[0051] The above has described the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles, practical application or improvement of technology in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A distribution box with a 2U DC power distribution module, characterized in that, Includes enclosure, 2U DC power distribution module, and external interfaces; The 2U DC power distribution module is located inside the power distribution box housing containing the 2U DC power distribution module, and the power distribution box containing the 2U DC power distribution module includes 10 of the 2U DC power distribution modules; The rear of the 2U DC power distribution module includes an RS485 communication interface, GND and Vin input interfaces, and GND and Vout output interfaces. The front of the 2U DC power distribution module includes a control switch, a local voltage measurement module, a local current measurement module, a first display digital tube, a second display digital tube, a positive terminal of the metering test terminal, and a negative terminal of the metering test terminal. One end of the control switch is connected to the Vin input interface inside the 2U DC power distribution module, and the other end is connected to the GND input interface of the 2U DC power distribution module. The first and second display digital tubes are connected to the driving circuit through pins. The positive terminal of the metering and testing terminal is connected to the Vout output interface of the 2U DC power distribution module, and the negative terminal of the metering and testing terminal is connected to the GND output interface of the 2U DC power distribution module. The external interfaces include an input +, an input -, an RS485 communication interface, and an output interface. The input + is connected in parallel to the Vin input interface of the 2U DC power distribution module. The input - is connected in parallel to the GND input interface of the 2U DC power distribution module. The RS485 communication interface is connected in parallel to the RS485 communication interface of the 2U DC power distribution module. The output interface is connected to the GND and Vout output interfaces of the 2U DC power distribution module.

2. The distribution box with a 2U DC power distribution module according to claim 1, characterized in that, The RS485 communication interface of the 2U DC power distribution module is connected to an RS485 chip.

3. The distribution box with a 2U DC power distribution module according to claim 1, characterized in that, The local voltage measurement module and the local current measurement module input the measurement signals to the first display digital tube and the second display digital tube, respectively.

4. The distribution box with a 2U DC power distribution module according to claim 1, characterized in that, The distribution box with a 2U DC power distribution module includes a programmable logic controller (PLC), which is communicatively connected to the 2U DC power distribution module.

5. The distribution box with a 2U DC power distribution module according to claim 1, characterized in that, The positive and negative terminals of the metering and testing terminals adopt a plug-in circular hole structure.

6. The distribution box with a 2U DC power distribution module according to claim 1, characterized in that, The GND and Vin input interfaces and the GND and Vout output interfaces are equipped with sealing rings.

7. The distribution box with a 2U DC power distribution module according to claim 1, characterized in that, The 2U DC power distribution module includes a surge protector connected between the Vin input interface and the GND input interface.

8. The distribution box with a 2U DC power distribution module according to claim 1, characterized in that, A filter circuit is provided between the input + and input - of the external interface.

9. The distribution box with a 2U DC power distribution module according to claim 1, characterized in that, The enclosure is made of stainless steel.

10. The distribution box with a 2U DC power distribution module according to claim 1, characterized in that, The output interface of the external interface is equipped with overvoltage protection circuit and overcurrent protection circuit.

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