Low-voltage direct-current remote supply type electric energy router

Abstract

The utility model relates to the technical field of direct-current remote power supply, in particular to a low-voltage direct-current remote power supply type electric energy router, which comprises an input miniature circuit breaker, an input lightning protection device, an output lightning protection device, a remote power supply module, a monitoring module, an intelligent power distribution module, an environment sensing module and an intelligent temperature control module, according to the utility model, the traditional 750V direct-current transmission voltage is increased to 1500V direct-current voltage, so that the power supply radius is effectively expanded, the energy loss in the line transmission process is reduced, and the transmission efficiency of the system is remarkably improved. The improvement is particularly key in a long-distance power supply scene, the line loss can be effectively reduced, and the utilization rate of electric energy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to direct current remote power supply technical field especially relates to a low pressure direct current remote supply type electric energy router. BACKGROUND

[0002] With the rapid development of high-speed traffic infrastructure, more and more road monitoring, road security, road early warning and other equipment need stable DC power supply. The existing energy router master station is widely used in the remote power supply scene of the highway, usually adopts the first loop architecture combined with transformer and rectifier diode, converts the grid three-phase alternating current (380Vac, 50Hz) into direct current (750Vdc). The secondary loop of the device monitors the system state through the monitoring module to ensure the safety and stability of power supply.

[0003] However, the existing energy router master station device still has many technical bottlenecks in the application process. First of all, because the system mainly depends on the rectifier diode for AC-DC conversion, its conversion efficiency is low, resulting in low overall system efficiency. Secondly, due to the limitation of rectification mode, the output voltage has low regulation precision and is easily affected by input voltage fluctuation, which further affects the stability of power supply. In addition, the remote control ability of the existing device is limited, the adjustment range of the output voltage is small, and it is difficult to meet the flexible demand of different devices for power supply. At the same time, the remote monitoring ability is insufficient, and the system state parameters that can be monitored are less, which is difficult to realize fine management, and the output current ripple of the existing device is large, which may cause large power impact at the load end, affecting the power supply quality and equipment life. SUMMARY

[0004] Based on the above problems, the utility model provides a low voltage direct current remote supply type electric energy router to improve the overall efficiency of the system, enhance the voltage stabilization ability, expand the remote control and monitoring function, and reduce the output current ripple to improve the power supply quality, so as to better meet the demand of high-speed traffic and other remote power supply scenes.

[0005] The utility model realizes the following technical scheme:

[0006] A low voltage direct current remote supply type electric energy router, comprising an input miniature circuit breaker, an input lightning protection device, an output lightning protection device, a remote supply module, a monitoring module, an intelligent power distribution module, an environmental sensing module and an intelligent temperature control module;

[0007] The three-phase input end of the input miniature circuit breaker is connected with the external three-phase alternating current power supply, and the output end of the input miniature circuit breaker is connected with the input end of the input lightning protection device through the copper bar;

[0008] The output end of the input lightning protection device is connected with the alternating current input port of the remote supply module through the cable;

[0009] The direct current output positive and negative poles of the remote supply module are connected with the input positive and negative poles of the output lightning protection device and the input positive and negative poles of the intelligent power distribution module through copper bars in sequence;

[0010] The power supply input positive and negative poles of the monitoring module are connected with the direct current output positive and negative poles of the remote supply module through cables in parallel, and the communication interface of the monitoring module is connected with the communication interfaces of the remote supply module and the intelligent power distribution module through CAN buses respectively;

[0011] The power supply positive and negative poles of the environmental sensing module are connected with the 12V power supply output end of the monitoring module through 12V direct current lines, and the signal output end of the environmental sensing module is connected with the local communication interface of the monitoring module through an RS485 interface;

[0012] The power supply input positive and negative poles of the intelligent temperature control module are connected with the 24V power supply output end of the monitoring module through 24V direct current lines, and the control signal output end of the intelligent temperature control module is connected with the speed regulation control port of the cooling fan through a PWM signal line.

[0013] Further, the remote supply module is multiple, and the direct current output positive and negative poles of the multiple remote supply modules are connected in series or in parallel to the same high-voltage copper bar, and the communication interfaces of the remote supply modules are interconnected with the communication interface of the monitoring module through CAN buses.

[0014] Further, the environmental sensing module comprises a temperature and humidity sensor, a water immersion sensor and a smoke sensor.

[0015] The signal output end of the temperature and humidity sensor is connected with the digital input port of the monitoring module.

[0016] The signal output end of the water immersion sensor is connected with the digital input port of the monitoring module.

[0017] The signal output end of the smoke sensor is connected with the digital input port of the monitoring module.

[0018] Further, the remote supply module receives the voltage regulation instruction of the monitoring module through the CAN bus.

[0019] The monitoring module obtains the contactor state and the load parameter of the intelligent power distribution module through the RS485 interface.

[0020] Advantages of the utility model:

[0021] (1) The low-voltage direct current remote supply type electric energy router disclosed by the utility model effectively expands the power supply radius by increasing the traditional 750V direct current transmission voltage to 1500V direct current voltage, reduces the energy loss in the line transmission process, and significantly improves the transmission efficiency of the system. This improvement is particularly important in long-distance power supply scenarios, which can effectively reduce line loss and improve the utilization rate of electric energy.

[0022] (2) The low-voltage direct-current remote supply type electric energy router disclosed by the utility model optimizes voltage regulation mechanism through remote supply module, makes output voltage more stable, reduces influence of input voltage fluctuation on power supply quality, thereby providing more reliable power supply guarantee for downstream equipment;

[0023] (3) The low-voltage direct-current remote supply type electric energy router disclosed by the utility model improves accurate control of power supply system operation state through real-time monitoring of system voltage, current and environmental state through monitoring module, optimizes remote fault diagnosis function, makes fault positioning more rapid and accurate, greatly shortens fault processing time, and monitoring module can also be synchronously integrated with signal microcomputer monitoring system, realizes closed-loop management of power supply system, and further improves intelligent level and maintenance efficiency of the system;

[0024] (4) The low-voltage direct-current remote supply type electric energy router disclosed by the utility model adopts left and right standby power functions to adapt to the complex demand that ring line energy router master stations are independent of each other and need to be mutually powered, greatly improves power supply redundancy capability of the system, enables standby equipment to seamlessly take over power supply task when main equipment fails, ensures continuity and stability of the traffic direct-current remote supply system, thereby improving high availability and flexibility of the system;

[0025] The low-voltage direct-current remote supply type electric energy router disclosed by the utility model is targetedly optimized in view of the problems of limited power supply distance, large energy loss, poor voltage stability, insufficient monitoring capability and lack of intelligent power distribution function of the existing traffic direct-current remote supply energy router master station equipment, provides a more efficient, stable and intelligent direct-current remote supply solution, and provides more reliable and economic technical support for power supply in the traffic field. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 It is a three-phase four-wire AC circuit wiring diagram of the low-voltage direct-current remote supply type electric energy router disclosed by the utility model;

[0028] Figure 2 It is a high-voltage direct-current circuit wiring diagram of the low-voltage direct-current remote supply type electric energy router disclosed by the utility model;

[0029] Figure 3The utility model provides a kind of 24V loop wiring diagram of low-voltage direct current remote supply type electric energy router proposed by the utility model;

[0030] Figure 4 The utility model provides a kind of 12V loop wiring diagram of low-voltage direct current remote supply type electric energy router proposed by the utility model;

[0031] Figure 5 The utility model provides a kind of intelligent power distribution module contactor control loop wiring diagram of low-voltage direct current remote supply type electric energy router proposed by the utility model;

[0032] Figure 6 The utility model provides a kind of feedback signal loop wiring diagram of low-voltage direct current remote supply type electric energy router proposed by the utility model;

[0033] Figure 7 The utility model provides a kind of device structure schematic of low-voltage direct current remote supply type electric energy router proposed by the utility model Figure 1 ;

[0034] Figure 8 The utility model provides a kind of device structure schematic of low-voltage direct current remote supply type electric energy router proposed by the utility model Figure 2 ;

[0035] Figure 9 The utility model provides a kind of device structure schematic of low-voltage direct current remote supply type electric energy router proposed by the utility model Figure 3 ;

[0036] Figure 10 The utility model provides a kind of device structure schematic of low-voltage direct current remote supply type electric energy router proposed by the utility model Figure 4 ;

[0037] Figure 11 The utility model provides a kind of device structure schematic of low-voltage direct current remote supply type electric energy router proposed by the utility model Figure 5 ;

[0038] Figure 12 The utility model provides a kind of device structure schematic of low-voltage direct current remote supply type electric energy router proposed by the utility model Figure 6 ;

[0039] In the figure, 101 - top layer top plate, 102 - antenna mounting plate, 103 - intermediate layer support, 104 - mounting base, 201 - first base, 202 - second base, 203 - third base, 301 - front door plate, 302 - hinge, 303 - limit mounting piece, 304 - first door plate reinforcing rib, 305 - second door plate reinforcing rib, 401 - front baffle fixing piece, 402 - side plate reinforcing rib, 403 - first side plate inner plate, 404 - main station top cover, 405 - first frame, 406 - second frame, 407 - first support, 408 - second support, 409 - second side plate inner plate, 501 - display screen, 502 - integrated control box, 503 - power supply module, 504 - high-voltage contactor, 505 - bus bar, 506 - DC copper bar, 507 - insulator, 508 - DC lightning protector, 509 - AC lightning protector, 510 - AC copper bar, 511 - air outlet air duct assembly, 512 - fan speed controller guide rail, 513 - fan mounting position, 514 - travel switch mounting piece, 515 - AC circuit breaker, 516 - DC circuit breaker, 517 - air inlet air duct assembly. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below in combination with examples and drawings. The illustrative embodiment of the utility model and its description are only used to explain the utility model, and do not limit the utility model.

[0041] Example 1

[0042] The embodiment provides a specific embodiment of a low-voltage DC remote supply type electric energy router.

[0043] As shown in Figure 1 Three-phase four-wire AC power (380Vac / 50Hz) is connected to the device through an input miniature circuit breaker (Q1). Q1 uses an ABB S200 series miniature circuit breaker with a rated current of 63A, which has overload and short circuit protection functions.

[0044] The 2 port of Q1 is connected to the copper bar M_A (A phase) through a 6mm² copper core cable, the 4 port is connected to the copper bar M_B (B phase), the 6 port is connected to the copper bar M_C (C phase), and the 8 port is connected to the copper bar M_N (neutral line). The neutral line uses a 10mm² copper bar to reduce impedance;

[0045] The ground wire is connected to the chassis ground bar (M_GND) through a 16mm² yellow-green double-color cable. The ground bar and the cabinet frame are fixed with M8 bolts to ensure that the grounding resistance is ≤0.1Ω;

[0046] Four remote supply modules SD1-SD4 are designed in parallel redundancy, each module rated power is 10kW, the input side is connected to the phase line through 4mm²shielded cable, wherein the L input port of SD1 is connected to M_A copper bar, the N input port is connected to M_N copper bar, and the GND port is connected to the machine shell through 4mm²cable; the L input port of SD2 is connected to M_B copper bar, and the N input port is connected to M_N copper bar; the L input port of SD3 is connected to M_C copper bar, and the N input port is connected to M_N copper bar; the L input port of SD4 is redundantly connected to M_A copper bar, and the N input port is connected to M_N copper bar, so that power supply can still be maintained when single-phase fault occurs.

[0047] The L input port of the monitoring module JK is connected to M_B copper bar, the N input port is connected to M_N copper bar, and the GND port is connected to the machine shell through 2.5mm²cable; the monitoring module is built-in STM32F407ZET6 master control chip, which can collect input voltage and current harmonic THD≤3% in real time.

[0048] The implementation process of the embodiment is as follows:

[0049] The input micro-break Q1 is closed, three-phase alternating current is distributed to each remote supply module through copper bar, and the built-in thermal magnetic release of the input micro-break automatically trips when the current exceeds 63A or short circuit occurs.

[0050] The internal PWM modulator of the remote supply module starts, 380Vac is rectified to 750Vdc through IGBT switch tube, and then is boosted to 1500Vdc through isolation transformer, with ripple coefficient≤1%.

[0051] The monitoring module communicates with the remote supply module through RS485 bus, monitors input voltage fluctuation (±5%) and module temperature (≤85℃) in real time, and uploads data to the cloud platform through the DTU unit 4G module.

[0052] Embodiment 2

[0053] The embodiment proposes a specific implementation of a low-voltage direct-current remote supply type electric energy router based on the embodiment 1.

[0054] As shown in Figure 2 , the DC+ output of SD1 is connected to M_H+ (positive bus) through 35mm²copper bar, and the DC- output is connected to M_V (common negative electrode); the DC+ of SD2 is connected to M_V, and the DC- is connected to M_H- (negative bus); SD3 and SD4 are connected in the same way, forming a bipolar 1500Vdc output architecture, with voltage regulation range of 0-1500Vdc (step 1V).

[0055] The input contact (ZJQ1-ZJQ4) of the intelligent power distribution module adopts a Schneider LC1D series contactor with a rated current of 100A, and is connected to M_H+ and M_H- through a 25mm² copper bar on the input side.

[0056] The output side is distributed to the load through high-voltage direct-current micro-break (Q2, Q3, rated voltage 1500Vdc, rated current 125A), and the micro-break is provided with arc fault protection (AFCI).

[0057] The X5.VM+ / - port of the monitoring module is connected to M_H+ and M_H- through a 0.5mm² shielded twisted pair, and a high-precision ADC chip (16-bit resolution) ADIAD7606 is used to sample the voltage and current in real time.

[0058] The X2.CAN-H / L bus is connected to the CAN interface of each remote supply module through a terminal resistor (120Ω), the communication rate is 500kbps, and the current sharing control algorithm (deviation ≤2%) is supported.

[0059] The implementation process of the embodiment is as follows:

[0060] The remote supply module is started synchronously, the current sharing is coordinated through the CAN bus, 1500Vdc direct current is output, the contactor (ZJQ1-ZJQ4) of the intelligent power distribution module is attracted, and power is supplied to the load.

[0061] If it is detected that the output of a certain module is abnormal (such as overvoltage ≥1600Vdc), the monitoring module immediately cuts off the fault module and switches to the standby module, and the switching time is ≤20ms.

[0062] The monitoring module dynamically adjusts the output voltage according to the load demand such as road monitoring equipment and security camera, and maintains voltage stability (fluctuation ≤±0.5%) through the PID algorithm.

[0063] Embodiment 3

[0064] The embodiment proposes a specific implementation of a low-voltage direct-current remote supply type electric energy router based on the embodiment 1.

[0065] As shown in Figure 3 The monitoring module JK is provided with a 24V / 5A switching power supply, and the output end is connected to the temperature control module and a 7-inch industrial touch screen through a 2.5mm² cable.

[0066] The positive electrode (V+) of the power supply of the temperature control module is connected to the X2.24V+ port of JK, and the negative electrode (V-) is connected to X2.24V-; the temperature control module outputs a PWM signal (frequency 1kHz) to a cooling fan (model EFB0412VHD), and the speed range is 0-100%.

[0067] The power port (DC 24V) of the display screen is connected to the 24V output of JK through an aviation plug, and the communication interface interacts with the monitoring module through RS232 to display parameters such as voltage, current, temperature and the like in real time.

[0068] The implementation procedure of the embodiment is as follows:

[0069] After the monitoring module is started, the 24V loop preferentially supplies power to the temperature control module and the display screen, the temperature control module initializes the heat dissipation strategy, when the temperature inside the cabinet exceeds 45℃, the temperature control module increases the fan speed to 80%, and pops up a high temperature alarm through the display screen; if the temperature drops below 40℃, the fan returns to low speed mode to reduce noise (≤45dB).

[0070] Embodiment 4

[0071] The embodiment proposes a specific implementation of a low-voltage direct-current remote power supply type electric energy router based on the embodiment 1.

[0072] As shown in Figure 4 The monitoring module JK is built-in with a 12V / 2A linear voltage stabilizer, which supplies power to the water immersion sensor model XW-DC-12V, the smoke sensor model JTY-GD-603 and the temperature and humidity sensor model AM2302 through a 1.5mm² cable.

[0073] The V2+ port of JK is connected to a red LED with a rated current of 20mA through the normally closed contact (NC) of the intermediate relay (XC, model HJR-3FF-S-Z), and the V2- is directly connected to the negative electrode of the LED;

[0074] The relay coil is controlled by the DO port of the monitoring module, and the default state is closed, and the LED is lit when the alarm is disconnected.

[0075] The NO contact of the water immersion sensor is connected to JK.DI1+, and the COM contact is connected to JK.DI1-, and an optical coupling isolation (isolation voltage 2500Vrms) is adopted.

[0076] The NO contact of the smoke sensor is connected to JK.DI0+, and the COM contact is connected to JK.DI0-, and the signal response time is ≤100ms.

[0077] The implementation procedure of the embodiment is as follows:

[0078] The 12V loop continuously supplies power to the sensor, the water immersion sensor detects the water level at the bottom of the cabinet in real time (sensitivity 1mm), and the temperature and humidity sensor uploads data every 5 seconds.

[0079] If water immersion or smoke is detected, the sensor NO contact is closed, the monitoring module DI port level is pulled high, triggering the audible and visual alarm (buzzer frequency 2kHz), and sending an SMS alarm through 4G. At the same time, the monitoring module cuts off the output contactor of the intelligent power distribution module to prevent secondary accidents caused by leakage or short circuit.

[0080] Embodiment 5

[0081] This embodiment proposes a specific implementation of a low-voltage DC remote power supply type power router based on Embodiment 1.

[0082] As shown in Figure 5 , the X3.S1+ / S1- port of the monitoring module is connected to the coils of contactors JQ1 (main contact rated current 125A) and JQ2 (rated voltage 24VDC) through a 1.5mm² cable;

[0083] The X3.S2+ / S2- port is connected to the coils of JQ3 and JQ4, and the auxiliary contacts (NO / NC) of the contactors feed back the status to the DI port of the monitoring module.

[0084] Each contactor uses a double-break structure with an arc extinction time ≤10ms and supports a 1500Vdc breaking capacity.

[0085] The A1 / A2 contacts of JQ1 are connected to JK.DI4+ / DI4-, and the A1 / A2 contacts of JQ2 are connected to JK.DI3+ / DI3-, using differential signal transmission to resist interference.

[0086] The implementation process of this embodiment is as follows:

[0087] The monitoring module sends a closing instruction, X3.S1+ outputs 24V, JQ1 / JQ2 coils are powered, the main contacts are closed, and power is supplied to the load;

[0088] The auxiliary contacts of the contactor are closed synchronously, and the DI port detects a high level, confirming the attraction state.

[0089] If the load is short-circuited (current ≥150A), the monitoring module immediately cuts off the X3.S1+ output, the contactor breaks, and the fault is recorded at the same time.

[0090] When the main contactor (JQ1) fails, the monitoring module switches to the backup contactor (JQ3) with a switching time ≤50ms, ensuring continuous power supply.

[0091] Embodiment 6

[0092] As shown in Figure 6 , this embodiment proposes a specific implementation of a low-voltage DC remote power supply type power router based on Embodiment 1.

[0093] The NO contact of the water immersion sensor is connected to JK.DI1+ (channel 1) through a 0.75 mm2shielded cable, and the COM contact is connected to JK.DI1-;

[0094] The NO contact of the smoke sensor is connected to JK.DI0+ (channel 0), and the COM contact is connected to JK.DI0-, and a twisted pair is used for the signal line to reduce crosstalk.

[0095] The A2 contact of JQ1 is connected to JK.DI4-, and the A1 contact is connected to JK.DI4+ in series with the A2 of JQ2, forming a cascade feedback;

[0096] JQ3 / JQ4 are connected to JK.DI3+ / DI3- in the same way, realizing independent monitoring of the state of four-way contactors.

[0097] The DI circuit uses ADI ADuM5401 isolation chip, supports channel isolation (5000Vrms), and the sampling frequency is 10 kHz.

[0098] The implementation process of the embodiment is as follows:

[0099] The monitoring module scans the DI port at a period of 1 ms, detects the contact state change, and when water immersion or smoke triggers, the DI level changes from low to high.

[0100] The trigger signal is uploaded to the cloud platform to generate an alarm event (including timestamp, device ID, fault type), and stored to the local SD card, if the fault is eliminated (such as water level drop), the sensor contact resets, the monitoring module automatically clears the alarm, and sends a recovery notification.

[0101] Embodiment 7

[0102] The embodiment proposes a box structure of a low-voltage direct-current remote supply type electric energy router.

[0103] The box structure of the low-voltage direct-current remote supply type electric energy router is composed of a main station top cover, a main station frame, a main station base, and front and rear door plates.

[0104] As shown in Figures 7-12 The main station top cover 404 is composed of a top layer top plate 101, an antenna mounting plate 102, an intermediate layer support 103, and a bottom layer mounting base 104.

[0105] The antenna mounting plate 102 of the main station top cover 404 is a semi-enclosed cavity formed by bending the four edges of the sheet metal part upward, and a square hole is cut at the bottom surface.

[0106] The top layer top plate 101 is bent twice downward from both sides of the sheet metal part, and the bending angle is 90 degrees. A square hole is cut in the middle of the top surface of the bent sheet metal part. The square hole is welded to the antenna mounting plate 102 at the joint.

[0107] The bottom layer mounting base 104 is formed by bending and cutting the sheet metal part. The overall shape is a rectangular frame with a "T" shape. The size of the base corresponds to the size of the middle support part, ensuring normal assembly and welding. The frame has four waterproof threaded holes formed by stamping on each side. The holes can be connected to the cabinet for installation and fixation. A certain number of waist-shaped holes are opened on the side.

[0108] The middle layer support part 103 is formed by bending the sheet metal part into a "T" shape. The bottom surface of the support part has a waterproof hole formed by stamping, which corresponds to the waterproof threaded hole of the bottom layer mounting base 104. The middle layer support part 103 has a small hole on the bent side, which is welded to the top layer top plate 101.

[0109] The main station top cover 404 is formed by welding the top layer top plate 101, the antenna mounting plate 102, the middle layer support part 103, and the bottom layer mounting base 104 in sequence.

[0110] The main station frame is composed of the first frame 405, the second frame 406, the travel switch mounting part 514, the hinge 302 mounting part, the first side plate inner plate 403, the second side plate inner plate 409, the side plate reinforcing rib 402, the first bracket 407, the second bracket 408, the wire slot mounting plate, the air switch mounting plate, the screen mounting plate, the first front baffle, the second front baffle, the third front baffle, and the front baffle fixing part 401.

[0111] The first frame 405 and the second frame 406 are L-shaped sheet metal parts formed by bending the sheet metal part. The long side surface has a circular hole for welding, which is convenient for fixing the side plate reinforcing rib 402 and the side plate inner plate. The first frame 405 has a waterproof through hole formed by stamping on the short side surface, which corresponds to the waterproof threaded hole of the main station top cover 404. The second frame 406 has six circular through holes cut on the short side surface, which facilitates the bottom wire access.

[0112] The first side plate inner plate 403 and the second side plate inner plate 409 are semi-closed cavities formed by bending the sheet metal part downward from four sides. The bottom plate has installation holes corresponding to the bracket installation.

[0113] The travel switch mounting part 514 is a "T" shaped sheet metal part formed by bending the sheet metal part. The bottom surface has a circular through hole and a M3 rivet nut for installing the travel switch. A circular hole is opened near one side to facilitate welding direction determination.

[0114] The first support 407, the second support 408, the wire slot mounting plate, the sheet metal part formed by bending the four edges of the sheet metal downward, the sheet metal part is elongated as a whole, the bending length of the short edge is twice that of the long edge; the fixing hole corresponding to the installed part is opened on the bottom surface; the empty installation plate is formed by bending the four edges of the sheet metal downward, compared with the bottom surface of the support, the bottom surface of the empty installation plate is wider, the fixing hole is opened on the bottom surface of the empty installation plate corresponding to the installation position, and the bridge type mold is used for stamping at the wiring position, so that the fixing of the cable tie is facilitated;

[0115] The screen mounting plate, the first front baffle, the second front baffle and the third front baffle are all formed by bending the two edges of the sheet metal into a N-shaped bent part; the first front baffle is used for shielding the empty opening, and a rectangular hole is cut on the bottom surface to facilitate the exposure of the empty opening handle; the second front baffle is provided with a honeycomb hole on the bottom surface, so that the corresponding part is convenient for air circulation; a rectangular hole is cut on the bottom surface of the screen mounting plate for mounting the display screen 501;

[0116] The hinge 302 mounting part and the front baffle fixing part 401 are both L-shaped bent parts formed by bending the sheet metal;

[0117] The main station frame is formed by welding and screwing the first frame 405, the second frame 406, the travel switch mounting part 514, the hinge 302 mounting part, the first side plate inner plate 403, the second side plate inner plate 409, the side plate reinforcing rib 402, the first support 407, the second support 408, the wire slot mounting plate, the empty opening mounting plate, the screen mounting plate, the first front baffle, the second front baffle, the third front baffle, the front baffle fixing part 401;

[0118] The main station base is composed of the first base 201, the second base 202, the third base 203 and the bottom plate cover plate;

[0119] The first base 201 is formed by bending the two edges of the sheet metal twice at 90°, the lengths of the two bent edges are different, a through hole is cut on the bottom surface, and a segment groove is bent on the inner side;

[0120] The second base 202 is a Z-shaped bent part formed by bending the sheet metal twice in succession;

[0121] The third base 203 is an L-shaped bent part formed by bending the sheet metal, which plays a reinforcing role in the main station base;

[0122] The bottom plate cover plate is formed by cutting off the excess segment groove after bending the segment groove of the sheet metal;

[0123] The main station base is composed of the first base 201, the second base 202, the third base 203 and the bottom plate cover plate by welding and screwing;

[0124] The front door and the back door of the main station are composed of a front door plate 301, a back door plate, a waterproof rubber strip, an air inlet duct assembly 517, an air outlet duct assembly 511, a first door plate reinforcing rib 304, a second door plate reinforcing rib 305, a limiting mounting 303 and a lock rod limiting rack.

[0125] The front door plate 301 and the back door plate are formed by continuously bending the four edges of sheet metal twice at 90 degrees; honeycomb holes are punched in the door plate at positions corresponding to the air inlet and outlet duct assemblies 511, and some equidistant waist holes are opened at the bent part of the lower half of the door for water leakage;

[0126] The air inlet duct assembly 517 is composed of a first air inlet duct assembly 517, a second air inlet duct assembly 517, a 20-mesh iron mesh and a waterproof rubber strip; the air outlet duct assembly 511 is composed of a first air outlet duct assembly 511, a second air outlet duct assembly 511, an air outlet fan mounting, a 20-mesh iron mesh and a waterproof rubber strip; the first air inlet duct assembly 517 and the first air outlet duct assembly 511 are formed by continuously bending the four edges of sheet metal twice, and a rectangular hole is cut in the bottom surface; the second air inlet duct assembly 517 and the second air outlet duct assembly 511 are formed by cutting sheet metal into shape first, and the opposite edges are bent to form; there is a protrusion on one bent edge; the first air inlet duct assembly 517 and the second air inlet duct assembly 517 are composed by welding, and the 20-mesh iron mesh is welded between the first air inlet duct assembly 517 and the second air inlet duct assembly 517;

[0127] The first door plate reinforcing rib 304 and the second door plate reinforcing rib 305 are formed by bending the two edges of sheet metal into a shape of a Chinese character 'fang';

[0128] The lock rod limiting rack is a sheet metal piece formed by bending the four edges downward, and the lengths of the two pairs of bends are not equal, and the long bend edge is bent outward again;

[0129] The limiting mounting 303 is an L-shaped bent piece formed by bending sheet metal, and a limiting hole is cut in the bottom surface;

[0130] The front door and the back door are composed of the front door plate 301, the back door plate, the waterproof rubber strip, the air inlet duct assembly 517, the air outlet duct assembly 511, the first door plate reinforcing rib 304, the second door plate reinforcing rib 305 and the lock rod limiting rack by welding and screws.

[0131] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A low voltage direct current off-site power router, characterized by, The input miniature circuit breaker, the input lightning protection device, the output lightning protection device, the remote supply module, the monitoring module, the intelligent power distribution module, the environmental sensing module and the intelligent temperature control module are included. The three-phase input end of the input miniature circuit breaker is connected with an external three-phase AC power supply, and the output end of the input miniature circuit breaker is connected with the input end of the input lightning protection device through copper bars. The output end of the input lightning protection device is connected with the AC input port of the remote supply module through a cable. The DC output positive and negative poles of the remote supply module are connected with the input positive and negative poles of the output lightning protection device and the input positive and negative poles of the intelligent power distribution module through copper bars. The power supply input positive and negative poles of the monitoring module are connected with the DC output positive and negative poles of the remote supply module through a cable in parallel, and the communication interface of the monitoring module is connected with the communication interfaces of the remote supply module and the intelligent power distribution module through CAN bus. The power supply positive and negative poles of the environmental sensing module are connected with the 12V power supply output end of the monitoring module through 12V DC lines, and the signal output end of the environmental sensing module is connected with the local communication interface of the monitoring module through an RS485 interface. The power supply input positive and negative poles of the intelligent temperature control module are connected with the 24V power supply output end of the monitoring module through 24V DC lines, and the control signal output end of the intelligent temperature control module is connected with the speed control port of the cooling fan through a PWM signal line.

2. A low voltage DC remote electrical energy router according to claim 1, characterized in that There are multiple remote supply modules, and the DC output positive and negative poles of the multiple remote supply modules are connected in series or in parallel to the same high-voltage copper bar, and the communication interfaces of the remote supply modules are interconnected with the communication interface of the monitoring module through CAN bus.

3. The low voltage DC remote electrical energy router of claim 1, wherein, The environmental sensing module includes a temperature and humidity sensor, a water immersion sensor and a smoke sensor. The signal output end of the temperature and humidity sensor is connected with the digital input port of the monitoring module. The signal output end of the water immersion sensor is connected with the digital input port of the monitoring module. The signal output end of the smoke sensor is connected with the digital input port of the monitoring module.

4. The low voltage DC remote electrical energy router of claim 1, wherein, The remote supply module receives the voltage adjustment instruction of the monitoring module through CAN bus. The monitoring module obtains the contactor state and load parameters of the intelligent power distribution module through an RS485 interface.

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