CN215343910U - Power supply box - Google Patents
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- CN215343910U CN215343910U CN202121217208.0U CN202121217208U CN215343910U CN 215343910 U CN215343910 U CN 215343910U CN 202121217208 U CN202121217208 U CN 202121217208U CN 215343910 U CN215343910 U CN 215343910U
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Abstract
The utility model is suitable for the field of power cabinets, and provides a power supply box, which comprises: a cabinet; the first load access module and the second load access module are installed on the cabinet; the first power supply module is arranged in the cabinet and is connected with the first load access module through a first live wire and a first zero wire; the second power supply module is arranged in the cabinet and is connected with the second load access module through a second live wire and a second zero wire; the first switch is arranged on the first live wire, and the second switch is arranged on the second live wire; the third switch is arranged on the third live wire, and the fourth switch is connected with the third switch in parallel; the first switch and the third switch are interlocked in on-off, and the second switch and the fourth switch are interlocked in on-off. According to the embodiment of the utility model, the first power supply module and the second power supply module respectively supply power to the first load access module and the second load access module, so that two paths of power supplies are kept to normally work, and the load quantity of each power supply module is reduced.
Description
Technical Field
The utility model belongs to the field of power cabinets, and particularly relates to a power supply box.
Background
In order to ensure the safety of lives and properties of people, monitoring systems are installed on urban roads, subway stations or other public places, each monitoring system comprises a plurality of cameras, and the cameras need to be supplied with power in a centralized mode in order to ensure the normal work of the cameras.
The traditional centralized power supply works through a transformer, when a system is maintained, the power supply is frequently required to be turned on and off, equipment is started at the same time when all cameras are turned on, the starting current is extremely large, the impact force on the power supply is large, the power supply can be burnt seriously, and once the transformer fails or is damaged in operation, all the camera equipment stops working, the whole monitoring system cannot work normally, the monitoring system falls into a paralyzed state, especially images of important entrances and exits cannot be monitored, and unnecessary troubles can be caused.
In order to solve the problem that all camera equipment stops working after a transformer breaks down or is damaged in operation, the conventional dual-power supply power box is used for seamlessly switching to another power supply when one power supply fails, but the dual-power supply power box actually only works with one power supply, supplies power to all cameras, is loaded, and still has the problems of large starting current and large impact force on the power supply.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power supply box, aiming at solving the problem that the power supply box only has one power supply to work.
The present invention is achieved as such, a power supply box comprising:
a cabinet;
a first load access module and a second load access module mounted on the cabinet;
the first power supply module is arranged in the cabinet and is connected with the first load access module through a first live wire and a first zero wire;
the second power supply module is arranged in the cabinet and is connected with the second load access module through a second live wire and a second zero wire;
a first switch disposed on the first fire line and a second switch disposed on the second fire line;
the first live wire is connected between the first switch and the first load access module, the second live wire is connected between the second switch and the second load access module, and the third live wire is connected with the first zero wire and the second zero wire;
a third switch disposed on the third live line and a fourth switch connected in parallel with the third switch;
the first switch and the third switch are in on-off interlocking, the second switch and the fourth switch are in on-off interlocking, only one of the first switch and the third switch is closed at the same time, and only one of the second switch and the fourth switch is closed.
Still further, the power supply box further includes:
and the interlocking circuit enables the first switch and the third switch to be in on-off interlocking, and enables the second switch and the fourth switch to be in on-off interlocking.
Still further, the power supply box further includes:
the fifth switch is arranged on the first zero line, and the sixth switch is arranged on the second zero line;
the seventh switch is arranged on the third zero line, and the eighth switch is connected with the seventh switch in parallel;
the fifth switch and the seventh switch are interlocked in on-off, the sixth switch and the eighth switch are interlocked in on-off, only one of the fifth switch and the seventh switch is closed at the same time, only one of the sixth switch and the eighth switch is closed, the first switch and the fifth switch are opened and closed at the same time, the second switch and the sixth switch are opened and closed at the same time, the third switch and the seventh switch are opened and closed at the same time, and the fourth switch and the eighth switch are opened and closed at the same time.
Furthermore, the first load access module and the second load access module each include a plurality of access modules connected in parallel.
Further, the access module comprises: fuse, control switch and wiring port that establish ties.
Further, the access module is mounted on the PCB board.
Furthermore, a first transformer is arranged in the first power supply module, and a second transformer is arranged in the second power supply module.
Still further, the power supply box further includes:
a voltage monitoring module that monitors voltages of the first power supply module and the second power supply module;
a controller connected to the voltage monitoring module.
Still further, the power supply box further includes:
and the temperature monitoring module is used for monitoring the temperature in the machine cabinet and is connected with the controller.
Still further, the power supply box further includes:
the fan is used for cooling the inside of the cabinet and is connected with the controller.
In the embodiment of the utility model, a first switch is arranged on a first live wire which is connected with a first power supply module and a first load access module, a second switch is arranged on a second live wire which is connected with a second power supply module and the second load access module, a third switch and a fourth switch which are connected in parallel are arranged on a third live wire, the first switch and the third switch are in on-off interlocking, the second switch and the fourth switch are in on-off interlocking, only one of the first switch and the third switch is closed at the same time, only one of the second switch and the fourth switch is closed, under the normal condition, the first power supply module and the second power supply module respectively supply power to the first load access module and the second load access module, the normal work of two paths of power supplies is kept, the load number of each power supply module is reduced, the impact of the loads on the power supplies at the moment of opening the power supplies can be reduced, and when one path of power supply fails in the first power supply module and the second power supply module, and the other power supply can be seamlessly accessed by turning on the third switch or the fourth switch, so that the situation that the other part of the load cannot work normally due to power failure is avoided.
Drawings
FIG. 1 is a three-view plan view provided by the present invention;
FIG. 2 is an internal circuit diagram provided by the present invention;
FIG. 3 is a diagram of an interlock circuit provided by the present invention;
fig. 4 is an internal circuit diagram of another embodiment of the present invention.
In the figure, 100, a cabinet; 101. a vent hole; 201. a first load access module; 202. a second load access module; 210. accessing a module; 211. a fuse; 212. a control switch; 213. a wiring port; 301. a first power supply module; 302. a second power supply module; 400. a PCB board; 500. an interlock circuit; 501. a first master control module; 502. a second master control module; 503. a first auxiliary control module; 504. a second auxiliary control module; 600. a fan; l1, first line of fire; n1, first neutral; l2, second fire line; n2, second neutral; l3, third fire line; n3, third neutral; SSR1, first switch; SSR2, second switch; SSR3, third switch; SSR4, fourth switch; SSR5, fifth switch; SSR6, sixth switch; SSR7, seventh switch; SSR8, eighth switch; t1, a first transformer; t2, a second transformer; AB1, a first rectifier bridge; AB2, a second rectifier bridge; ZD, zener diode; r0, current limiting resistor; OC1, a first optical coupling; OC2, a second optical coupling; r1, a first divider resistor; r2 and a second divider resistor; OC3, a third optical coupling; c1, capacitance; r3 and a third resistor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the power supply box provided by the embodiment of the utility model, the first power supply module is connected with the first load access module through a first live wire and a first zero line, and the second power supply module is connected with the second load access module through a second live wire and a second zero line; a first switch is arranged on the first live wire, and a second switch is arranged on the second live wire; one end of the third live wire is connected to the first live wire between the first switch and the first load access module, the other end of the third live wire is connected to the second live wire between the second switch and the second load access module, and the third zero wire is connected with the first zero wire and the second zero wire; a third switch and a fourth switch connected with the third switch in parallel are arranged on the third live wire; the first switch and the third switch are in on-off interlocking, the second switch and the fourth switch are in on-off interlocking, only one of the first switch and the third switch is closed at the same time, and only one of the second switch and the fourth switch is closed. In the embodiment of the utility model, a first switch is arranged on a first live wire which is connected with a first power supply module and a first load access module, a second switch is arranged on a second live wire which is connected with a second power supply module and the second load access module, a third switch and a fourth switch which are connected in parallel are arranged on a third live wire, the first switch and the third switch are in on-off interlocking, the second switch and the fourth switch are in on-off interlocking, only one of the first switch and the third switch is closed at the same time, only one of the second switch and the fourth switch is closed, under the normal condition, the first power supply module and the second power supply module respectively supply power to the first load access module and the second load access module, the normal work of two paths of power supplies is kept, the load number of each power supply module is reduced, the impact of the loads on the power supplies at the moment of opening the power supplies can be reduced, and when one path of power supply fails in the first power supply module and the second power supply module, and the other power supply can be seamlessly accessed by turning on the third switch or the fourth switch, so that the situation that the other part of the load cannot work normally due to power failure is avoided.
Any switch in any embodiment of the utility model is a relay or a contactor.
Example one
As shown in fig. 1 and 2, an embodiment of the present invention provides a power supply box, including:
a cabinet 100;
a first load access module 201 and a second load access module 202 mounted on the cabinet 100;
a first power supply module 301 installed in the cabinet 100, wherein the first power supply module 301 is connected to the first load access module 201 through a first live line L1 and a first neutral line N1;
a second power supply module 302 mounted in the cabinet 100, the second power supply module 302 being connected to the second load access module 202 through a second live line L2 and a second neutral line N2;
a first switch SSR1 disposed on the first live line L1 and a second switch SSR2 disposed on the second live line L2;
a third live wire L3 and a third neutral wire N3, one end of the third live wire L3 is connected to the first live wire L1 between the first switch SSR1 and the first load access module 201, the other end of the third live wire L3 is connected to the second live wire L2 between the second switch SSR2 and the second load access module 202, and the third neutral wire N3 is connected to the first neutral wire N1 and the second neutral wire N2;
a third switch SSR3 provided on said third live line L3 and a fourth switch SSR4 connected in parallel to said third switch SSR 3;
the first switch SSR1 is interlocked on/off with the third switch SSR3 and the second switch SSR2 is interlocked on/off with the fourth switch SSR4, only one of the first switch SSR1 and the third switch SSR3 being closed and only one of the second switch SSR2 and the fourth switch SSR4 being closed at the same time.
The first load access module 201 and the second load access module 202 each include a plurality of access modules 210 connected in parallel. The first load access module 201 and the second load access module 202 may include the same or different number of access modules 210. Each access module 210 includes: the fuse 211, the control switch 212 and the connection port 213 that connect in series, the fuse 211 is connected first live wire L1 or second live wire L2, and external load connection port 213, the optional ship type switch that uses of control switch 212 sets up between fuse 211 and the connection port 213, can control the power break-make of connection port 213 alone.
Further, in an alternative embodiment of the present invention, the access module 210 is mounted on the PCB 400. The access module 210 is mounted on the PCB 400, the PCB 400 is convenient to wire, the components of the access module 210 are integrated on the PCB 400, and the PCB 400 is mounted on the cabinet 100, so that the operation is simple and convenient. Another alternative embodiment of the present invention may also mount each connection port 213 on a side panel of cabinet 100, which may also facilitate external loading.
Further, in an alternative embodiment of the present invention, a first transformer T1 is disposed in the first power supply module 301, and a second transformer T2 is disposed in the second power supply module 302. The voltage of the first power supply module 301 and the voltage of the second power supply module 302 can be adjusted according to the rated voltage of the load by using a transformer, so that the application range is wide. The transformer can save the cost of the transformer and has no transformer damage, maintenance and replacement.
The first switch SSR1 is interlocked with the third switch SSR3 in the on-off state, and the second switch SSR2 is interlocked with the fourth switch SSR4 in the on-off state, and at the same time, only one of the first switch SSR1 and the third switch SSR3 is closed, and only one of the second switch SSR2 and the fourth switch SSR4 is closed. Under normal conditions, the first power supply module 301 and the second power supply module 302 can normally supply power, the first switch SSR1 and the second switch SSR2 are turned on, the third switch SSR3 and the fourth switch SSR4 are turned off, the first power supply module 301 only supplies power to the first load access module 201, the second power supply module 302 only supplies power to the second load access module 202, the two paths of power supplies are kept to normally work, and the number of loads of each power supply module is reduced. One of the first power supply module 301 or the second power supply module 302 fails and cannot normally supply power, for example, the first power supply module 301 fails, when the second power supply module 302 can normally supply power, the first switch SSR1 is turned off, the third switch SSR3 is turned on, the second switch SSR2 is turned on, the fourth switch SSR4 is turned on, the second power supply module 302 normally supplies power to the second load access module 202, and also supplies power to the first load access module 201 through the turned-on third switch, thereby avoiding the situation that the load connected to the first load access module 201 cannot normally work due to power failure, and facilitating maintenance of the first power supply module 301 without power failure.
In an alternative embodiment of the present invention, the first switch SSR1 and the third switch SSR3 that are interlocked to each other, and the second switch SSR2 and the fourth switch SSR4 that are interlocked to each other may be implemented by an open-close contactor manufactured by schneider and others, where the first switch SSR1 and the third switch SSR3 are an open-close contactor, and the second switch SSR2 and the fourth switch SSR4 are another open-close contactor.
In the embodiment of the present invention, a first switch SSR1 is disposed on a first live wire L1 connecting a first power supply module 301 and a first load access module 201, a second switch SSR2 is disposed on a second live wire L2 connecting the second power supply module 302 and a second load access module 202, a third switch SSR3 and a fourth switch SSR4 connected in parallel are disposed on a third live wire L3, and the first switch SSR1 and the third switch SSR3 are interlocked in an on-off manner, and the second switch SSR2 and the fourth switch SSR4 are interlocked in an on-off manner, at the same time, only one of the first switch SSR1 and the third switch SSR3 is closed, only one of the second switch 2 and the fourth switch SSR4 is closed, under a normal condition, the first power supply module 301 and the second power supply module 302 respectively supply power to the first load access module 201 and the second load access module 202, so as to maintain normal operation of two power supplies, reduce the number of loads, and simultaneously reduce power supply impact to start the power supply module, when one of the first power supply module 301 and the second power supply module 302 fails, the other power supply can be switched on seamlessly by turning on the third switch SSR3 or the fourth switch SSR4, so as to avoid the situation that the other part of the loads cannot work normally due to power failure.
Example two
In an alternative embodiment of the present invention, as shown in fig. 2, the power supply box further includes:
an interlock circuit 500 that on-off interlocks the first switch SSR1 with the third switch SSR3 and on-off interlocks the second switch SSR2 with the fourth switch SSR 4.
Specifically, as shown in fig. 3, the interlock circuit 500 includes:
a first pin and a third pin of the first rectifier bridge AB1 are respectively connected with a first live wire L1 and a first zero wire N1;
a first pin and a third pin of the second rectifier bridge AB2 are respectively connected with a second live wire L2 and a second zero wire N2;
the first main control module 501 and the second main control module 502, the first main control module 501 and the second main control module 502 each include a zener diode ZD, a current-limiting resistor R0, a first opto-coupler OC1 and a second opto-coupler OC2 connected in series in sequence, wherein a negative electrode of the zener diode ZD of the first main control module 501 is connected to the second pin of the first rectifier bridge AB1, the second pin of the second opto-coupler OC2 of the first main control module 501 is connected to the fourth pin of the first rectifier bridge AB1, the fourth pin of the first opto-coupler OC1 of the first main control module 501 is connected to a starting power supply, the third pin of the first opto-coupler OC1 under the main control of the first main control module 501 is connected to the ground after being connected to the first switch SSR1, a negative electrode of the zener diode ZD of the second main control module 502 is connected to the second pin of the second rectifier bridge AB2, the second pin of the second opto-coupler OC2 of the second main control module 502 is connected to the fourth pin of the second rectifier bridge AB2, a fourth pin of the first optical coupling OC1 of the second master control module 502 is connected to a starting power supply, and a third pin of the first optical coupling OC1 of the second master control module 502 is connected to the second switch SSR2 and then grounded;
the first main control module 501 and the second main control module 502 are connected in parallel with an RC circuit, which includes a capacitor C1 and a third resistor R3 for filtering.
A first auxiliary control module 503 and a second auxiliary control module 504, each of the first auxiliary control module 503 and the second auxiliary control module 504 includes a first voltage-dividing resistor R1 and a second voltage-dividing resistor R2 connected in series and a third opto-coupled node c3 connected in parallel with the second voltage-dividing resistor R2, wherein the first voltage-dividing resistor R1 of the first auxiliary control module 503 is connected to the second pin of the second rectifier bridge AB2, the second voltage-dividing resistor R2 of the first auxiliary control module 503 and the second pin of the third opto-coupled node c3 are connected to the fourth pin of the second rectifier bridge AB2, the fourth pin of the third opto-coupled node c3 of the first auxiliary control module 503 is connected to the start power supply, the third pin of the third opto-coupled node c3 of the first auxiliary control module 503 is connected to the third switch SSR3 and then grounded, the first voltage-dividing resistor R1 of the second auxiliary control module 504 is connected to the second pin of the first rectifier bridge AB1, a second voltage-dividing resistor R2 of the second auxiliary control module 504 and a second pin of a third optical coupling OC3 are connected to a fourth pin of the first rectifier bridge AB1, a fourth pin of a third optical coupling OC3 of the second auxiliary control module 504 is connected to a starting power supply, and a third pin of a third optical coupling OC3 of the second auxiliary control module 504 is connected to the fourth switch SSR4 and then grounded;
a second voltage-dividing resistor R2 of the first auxiliary control module 503, one end of which connected to the first voltage-dividing resistor R1 of the first auxiliary control module 503 is connected to the fourth pin of the second optical coupling OC2 of the first main control module 501, and the other end of which is connected to the third pin of the second optical coupling OC2 of the first main control module 501;
one end of the second voltage-dividing resistor R2 of the second auxiliary control module 504, which is connected to the first voltage-dividing resistor R1 of the second auxiliary control module 504, is connected to the fourth pin of the second optical coupling OC2 of the second main control module 502, and the other end thereof is connected to the third pin of the second optical coupling OC2 of the second main control module 502.
The operation principle of the interlock circuit 500 string, the first main control module 501 and the first auxiliary control module 503 is the same as the operation principle of the second main control module 502 and the second auxiliary control module 504, and the operation principle of the first main control module 501 and the first auxiliary control module 503 is described by taking as an example.
When the first power supply module 301 works normally, the first main control module 501 connected to both ends of the first power supply module 301 is turned on, the first optical coupling OC1 and the second optical coupling OC2 thereof are turned on, the first optical coupling OC1 is turned on, the third pin of the first optical coupling OC1 is turned on with the fourth pin thereof, that is, the starting power supply of the first switch SSR1 is connected, so that the first switch SSR1 is turned on, the second optical coupling OC2 is turned on, because the second divider resistor R2 of the first auxiliary control module 503 is connected with the first divider resistor R1 of the first auxiliary control module 503, one end thereof connected with the fourth pin of the second optical coupling OC2 of the first main control module 501 is connected, the other end thereof is connected with the third pin of the second optical coupling OC2 of the first main control module 501, which is equivalent to that the second divider resistor R2 is connected in parallel with the second optical coupling OC2, the third pin of the second optical coupling OC2 and the fourth pin thereof form a short circuit, and the third divider resistor R2 and the third optical coupling OC3 are also disconnected, the third pin and the fourth pin of the third optical coupling OC3 are disconnected, that is, the start power of the third switch SSR3 is turned off, so that the third switch SSR3 is turned off, and thus the third switch SSR3 is inevitably turned off when the first switch SSR1 is turned on. When the first power supply module 301 fails, the first optical coupling OC1 and the second optical coupling OC2 of the first main control module 501 are disconnected, the first optical coupling OC1 is disconnected, the third pin and the fourth pin of the first optical coupling OC1 are disconnected, namely, the starting power of the first switch SSR1 is cut off, so that the first switch SSR1 is cut off, the second opto-coupled OC2 is cut off, and the third pin and the fourth pin of the second opto-coupled OC2 are also cut off to form an open circuit, the two ends of the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 connected in series are connected to the second rectifier bridge AB2, the second rectifier bridge AB2 is connected to the second power module 302, when the second power module 302 is normal, the second voltage-dividing resistor R2 is conducted, the third optical coupling OC3 is conducted, the third pin and the fourth pin of the third optical coupling OC3 are conducted, that is, the start power source connected to the third switch SSR3, turns on the third switch SSR3, so that when the first switch SSR1 is turned off, the third switch SSR3 is necessarily turned on. Of course, when the first power supply module 301 and the second power supply module 302 fail at the same time, the first switch SSR1 and the third switch SSR3 are opened at the same time.
According to the embodiment of the utility model, the characteristic that the optical coupler has high-speed switching is utilized, so that high-speed switching can be realized between the first switch SSR1 and the third switch SSR3 and between the second switch SSR2 and the fourth switch SSR4, when one path of power supply in the first power supply module 301 and the second power supply module 302 fails, the third switch SSR3 or the fourth switch SSR4 can be switched on at high speed, the other path of power supply is connected in a seamless mode, and the situation that the other part of load cannot work normally due to power failure is avoided.
Many other interlock circuits are known in the art and are suitable for use with the present invention.
EXAMPLE III
In an alternative embodiment of the present invention, as shown in fig. 4, the power supply box further includes:
a fifth switch SSR5 provided on the first neutral wire N1 and a sixth switch SSR6 provided on the second neutral wire N2;
a seventh switch SSR7 provided on the third neutral wire N3 and an eighth switch SSR8 connected in parallel to the seventh switch SSR 7;
the fifth switch SSR5 is interlocked with the seventh switch SSR7, the sixth switch SSR6 is interlocked with the eighth switch SSR8, only one of the fifth switch SSR5 and the seventh switch SSR7 is closed, only one of the sixth switch SSR6 and the eighth switch SSR8 is closed at the same time, the first switch SSR1 is opened and closed with the fifth switch SSR5, the second switch SSR2 is opened and closed with the sixth switch SSR6, the third switch SSR3 is opened and closed with the seventh switch SSR7, and the fourth switch SSR4 is opened and closed with the eighth switch SSR 8.
The embodiment of the utility model can be realized by using a two-open two-close contactor produced by Schneider and other companies, wherein the first switch SSR1, the third switch SSR3, the fifth switch SSR5 and the seventh switch SSR7 are two-open two-close contactors, the KM1 is a control generator of the two-open two-close contactors, the first switch SSR1 and the fifth switch SSR5 are opened and closed simultaneously, the third switch SSR3 and the seventh switch SSR7 are opened and closed simultaneously, the second switch SSR2, the fourth switch 4, the sixth switch SSR6 and the eighth switch SSR8 are the other two-open two-close contactors, the KM2 is a control generator of the two-open two-close contactors, the second switch SSR2 and the sixth switch SSR6 are opened and closed simultaneously, and the fourth switch SSR4 and the eighth switch SSR8 are opened and closed simultaneously.
According to the embodiment of the utility model, the switches are arranged on the live wire and the zero wire, so that the safety of the power supply box is improved, and the situations of electric shock and the like in the maintenance process are prevented.
Example four
In an optional embodiment of the present invention, the power supply box further comprises:
a voltage monitoring module (not shown) for monitoring the voltages of the first power supply module 301 and the second power supply module 302;
a controller (not shown) connected to the voltage monitoring module.
In the embodiment of the present invention, the voltage monitoring module includes a first voltage monitor for monitoring the voltage of the first power supply module 301 and a second voltage monitor for monitoring the voltage of the second power supply module 302, the controller may be an integrated network management system, and when the voltage monitoring module monitors that the voltage of one of the first power supply module 301 and the second power supply module 302 is abnormal, the network management system may be prompted in a manner of prompting a picture or alarming, so as to dispatch a worker for maintenance in time; and a voltage safety range can be set, when the voltage is higher than a high-voltage threshold or lower than a low-voltage threshold, an alarm is given to prompt a worker that the first power supply module 301 and the second power supply module 302 may fail, so that the worker can know the power supply condition in advance and replace or maintain the power supply which may fail in advance.
EXAMPLE five
In an optional embodiment of the present invention, the power supply box further comprises:
a temperature monitoring module (not shown) for monitoring the temperature in the cabinet 100, wherein the temperature monitoring module is connected to the controller.
In the embodiment of the present invention, the temperature monitoring module is used for monitoring the temperature in the cabinet 100, so as to ensure that the temperature in the cabinet 100 is normal.
In another alternative embodiment of the present invention, as shown in fig. 1, further, the power supply box further includes:
the fan 600 is a fan 600 for dissipating heat in the cabinet 100, and the fan 600 is connected to the controller.
The blower fan 600 is installed at a side of the cabinet 100, and a ventilation hole 101 is provided at the other side opposite to the side where the blower fan 600 is installed. When the temperature in the cabinet 100 rises, the controller turns on the fan 600 to rapidly dissipate heat for the cabinet 100.
The reason for the temperature rise in the cabinet 100 is generally a power failure or a fan 600 failure, and therefore, the temperature in the cabinet 100 is monitored by the temperature monitoring module, and whether the power or the fan 600 fails or not can be known, so that a worker can be prompted to maintain the cabinet conveniently.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A power supply box, comprising:
a cabinet;
a first load access module and a second load access module mounted on the cabinet;
the first power supply module is arranged in the cabinet and is connected with the first load access module through a first live wire and a first zero wire;
the second power supply module is arranged in the cabinet and is connected with the second load access module through a second live wire and a second zero wire;
a first switch disposed on the first fire line and a second switch disposed on the second fire line;
the first live wire is connected between the first switch and the first load access module, the second live wire is connected between the second switch and the second load access module, and the third live wire is connected with the first zero wire and the second zero wire;
a third switch disposed on the third live line and a fourth switch connected in parallel with the third switch;
the first switch and the third switch are in on-off interlocking, the second switch and the fourth switch are in on-off interlocking, only one of the first switch and the third switch is closed at the same time, and only one of the second switch and the fourth switch is closed.
2. The power supply case of claim 1, further comprising:
and the interlocking circuit enables the first switch and the third switch to be in on-off interlocking, and enables the second switch and the fourth switch to be in on-off interlocking.
3. The power supply case of claim 1, further comprising:
the fifth switch is arranged on the first zero line, and the sixth switch is arranged on the second zero line;
the seventh switch is arranged on the third zero line, and the eighth switch is connected with the seventh switch in parallel;
the fifth switch and the seventh switch are interlocked in on-off, the sixth switch and the eighth switch are interlocked in on-off, only one of the fifth switch and the seventh switch is closed at the same time, only one of the sixth switch and the eighth switch is closed, the first switch and the fifth switch are opened and closed at the same time, the second switch and the sixth switch are opened and closed at the same time, the third switch and the seventh switch are opened and closed at the same time, and the fourth switch and the eighth switch are opened and closed at the same time.
4. The power supply box of claim 1, wherein said first load access module and said second load access module each comprise a plurality of access modules connected in parallel.
5. Power supply box according to claim 4, characterized in that said access module comprises: fuse, control switch and wiring port that establish ties.
6. The power supply box of claim 4, wherein said access module is mounted on a PCB board.
7. Power supply box according to any of claims 1 to 6, characterized in that a first transformer is provided in said first power supply module and a second transformer is provided in said second power supply module.
8. The power supply case of claim 7, further comprising:
a voltage monitoring module that monitors voltages of the first power supply module and the second power supply module;
a controller connected to the voltage monitoring module.
9. The power supply case of claim 8, further comprising:
and the temperature monitoring module is used for monitoring the temperature in the machine cabinet and is connected with the controller.
10. The power supply case of claim 9, further comprising:
the fan is used for cooling the inside of the cabinet and is connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121217208.0U CN215343910U (en) | 2021-06-01 | 2021-06-01 | Power supply box |
Applications Claiming Priority (1)
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Effective date of registration: 20220217 Address after: 518000 floor 7, Kangrong Industrial Park, weitangtou Avenue, Shixin residence, Langxin community, Shiyan street, Bao'an District, Shenzhen, Guangdong Patentee after: SHENZHEN TUOBANG AUTOMATION TECHNOLOGY Co.,Ltd. Address before: Room 413, block B, Tsinghua University Research Institute, high tech Industrial Park, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN TOPBAND Co.,Ltd. |