CN220985329U - Power supply redundant circuit, direct current distribution system and power supply equipment - Google Patents

Abstract

The application relates to a power supply redundancy circuit, a direct current power distribution system and power supply equipment, wherein the power supply redundancy circuit comprises a plurality of paths of power distribution modules; the input sides of the power distribution modules are respectively connected with different power supplies, and the output sides of the power distribution modules are connected in parallel and then connected with electric equipment. The power supply redundancy circuit improves the reliability of power supply for the direct current electric equipment.

Description

Power supply redundant circuit, direct current distribution system and power supply equipment

Technical Field

The present application relates to the field of circuit technologies, and in particular, to a power supply redundancy circuit, a dc power distribution system, and a power supply device.

Background

With the rapid development of industry technologies such as cloud computing, internet of things, big data, artificial intelligence and the like, the proportion of the end of a power supply system, which is a direct current electric device, is increased. Taking a data center as an example, the terminal electric equipment of the data center is taken as a computer, and the terminal of a power supply system of the data center needs to be provided with a switching power supply to carry out direct current conversion on alternating current so as to be used by various elements on the computer.

However, the power supply circuit for supplying power to the direct current electric equipment in the related art has the problem of lower reliability.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a power supply redundancy circuit, a dc power distribution system, and a power supply device that can improve reliability when supplying power to dc power consumers.

In a first aspect, the present application provides a power supply redundancy circuit comprising: a multi-path power distribution module; the input sides of the power distribution modules are respectively connected with different power supplies; after the output sides of the power distribution modules are connected in parallel; each power distribution module comprises at least two paths of power supply modules; the input sides of at least two paths of power supply modules in each power distribution module are connected with the same power supply, the output sides of all paths of power supply modules in each power distribution module are respectively and correspondingly connected with one electric equipment, and the output sides of at least two paths of power supply modules in each power distribution module are connected in parallel.

In one embodiment, each power supply module includes a switching power supply, and an input side of the switching power supply in each power supply module is connected with a power supply, and an output side of the switching power supply is connected with electric equipment with a power demand smaller than a preset value.

In one embodiment, each switching power supply is provided with a current sharing point, and the current sharing points of the switching power supplies are connected in parallel through a common bus.

In one embodiment, each power supply module further comprises a voltage transmitter, and an input side of the voltage transmitter in each power supply module is connected with a power supply, and an output side of the voltage transmitter is connected with electric equipment with power requirements larger than a preset value.

In one embodiment, each power supply module further comprises a communication module, and the communication module in each power supply module is connected with the switching power supply;

Each communication module is used for communicating the corresponding power supply module with external equipment.

In one embodiment, the switching power supply includes a DC/DC converter.

In one embodiment, each communication module comprises a remote signaling circuit and a remote sensing circuit, and the remote signaling circuit and the remote sensing circuit are connected with a switching power supply;

The remote signaling circuit is used for communicating the switching value information of each element in the corresponding power supply module with external equipment;

And the telemetry circuit is used for communicating the electrical quantity information of each element in the corresponding power supply module with external equipment.

In one embodiment, the power redundancy circuit further comprises a rack-mounted electrical cabinet, and each power distribution module is plugged into the rack-mounted electrical cabinet.

In a second aspect, the present application also provides a dc power distribution system comprising the power redundancy circuit of any one of the first aspects.

In a third aspect, the present application also provides a power supply apparatus, which includes the dc power distribution system of the second aspect.

The power supply redundancy circuit, the direct current power distribution system and the power supply equipment comprise a plurality of paths of power distribution modules; the input sides of the power distribution modules are respectively connected with different power supplies, and the output sides of the power distribution modules are connected in parallel and then connected with electric equipment. In the power supply redundant circuit, at least two paths of different power supplies are guaranteed to supply power on the input side of the power distribution module, so that when one path of power supply has a problem, the other path of power supply can continuously supply power for the power distribution module; in addition, the output sides of the multipath power distribution modules are connected in parallel, and under the condition, the power distribution modules can be guaranteed to supply power to electric equipment uninterruptedly, so that the power supply continuity and the working continuity of the electric equipment are guaranteed, and the reliability of power supply of the power supply redundancy circuit is improved.

Drawings

FIG. 1 is a block diagram of a power redundancy circuit in one embodiment;

FIG. 2 is a block diagram of a power redundancy circuit in another embodiment;

FIG. 3 is a block diagram of a power redundancy circuit in another embodiment;

FIG. 4 is a block diagram of a power redundancy circuit in another embodiment;

FIG. 5 is a block diagram of a power redundancy circuit in another embodiment;

FIG. 6 is a block diagram of a power redundancy circuit in another embodiment;

FIG. 7 is a block diagram of a power redundancy circuit in another embodiment;

FIG. 8 is a block diagram of a power redundancy circuit in another embodiment;

FIG. 9 is a block diagram of a power redundancy circuit in another embodiment;

FIG. 10 is a block diagram of a power redundancy circuit in another embodiment;

FIG. 11 is a block diagram of a telemetry circuit in one embodiment;

FIG. 12 is a block diagram of telemetry circuitry in one embodiment;

Fig. 13 is a block diagram of a power redundancy circuit in another embodiment.

Reference numerals illustrate:

10. a power supply redundancy circuit; 11 a power distribution module;

12. A power supply; 13, electric equipment;

31. a power supply module; 51 switching power supply;

61. a current equalizing point position; 81 a voltage transmitter;

91. a communication module; 92 external devices;

101. a remote signaling circuit; 102 telemetry circuitry;

111 MCU； 112 ADC；

113. A photo-isolation circuit; 114 a power distribution device interface 114;

121. an isolation voltage sampling circuit; 122 isolating the current sampling circuit;

123. A filter circuit; 124 analog-to-digital conversion circuitry;

131. A rack-mounted electric cabinet.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the term "comprising" and any variations thereof in the description of the application and the claims and the description of the figures above is intended to cover a non-exclusive inclusion.

It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element.

It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

With the rapid development of industry technologies such as cloud computing, internet of things, big data, artificial intelligence and the like, the demand for timely and efficient processing of mass data is continuously increased. The data center serves as the lowest infrastructure for data processing. The reliability of data center power supplies is a concern for the security of the entire data center. The power supply mode of the data center is alternating current power supply, and uninterrupted power supply is realized through an uninterrupted power supply.

At present, the power supply mode of the data center is that a 10kV power supply passes through a 10kV/400V distribution transformer, a low-voltage power distribution cabinet and an alternating current power supply, and finally, 380V alternating current power supply is provided for a computer. However, the computer is a direct current electric device, and the tail end still needs to be provided with a switching power supply to rectify and DC/DC convert the alternating current, so that the computer can be used for various elements on a computer main board.

In general, a data center powered by high-voltage direct current is adopted, a 10kV power supply passes through a 10kV/400V distribution transformer, a low-voltage power distribution cabinet and a high-voltage direct current power supply, and finally a 380V direct current power supply is provided for a computer, and a direct current bus output by the high-voltage direct current power supply can be directly connected with a battery in a hanging mode, so that uninterrupted power supply similar to an alternating current power supply is realized.

When a computer is powered by direct current, a redundant power supply is generally adopted to power the computer, wherein the redundant power supply is one power supply used in the computer and consists of a plurality of identical power supplies, the power supplies are used for load balancing, when one power supply fails, the other power supply can immediately take over the work of the power supplies, and after the power supplies are replaced, the two power supplies work cooperatively; the redundant power supply is to achieve high availability of the entire data center system.

However, the power supply circuit for the data center in the related art has a problem of untimely power supply, resulting in lower reliability of the power supply circuit for the data center.

Based on the power supply redundancy circuit, the power supply redundancy circuit is provided by the application, and the power supply redundancy circuit is powered by multiple paths of different power supplies on the input side of the switching power supply, so that when one path of power supply has a problem, the other paths of power supplies can continuously and uninterruptedly supply power to the power supply modules, and the output sides of all the power distribution modules are connected in parallel, so that uninterrupted power supply to electric equipment can be ensured under the condition, and the working continuity of the electric equipment is ensured.

The power supply can be alternating current or direct current, and if the power supply is direct current, the power distribution module is a power distribution module for converting direct current into direct current; if the power supply is alternating current, the power distribution module is a power distribution module for converting alternating current into direct current. The embodiments of the present application are not limited to the type of power source, and the power source is exemplified as an ac power source by some embodiments.

In one embodiment, the embodiment of the application provides a power redundancy circuit 10, as shown in fig. 1, wherein the power redundancy circuit 10 comprises a multi-path power distribution module 11; the input sides of the power distribution modules 11 are respectively connected with different power supplies 12; the output sides of the power distribution modules 11 are connected in parallel and then connected with electric equipment 13.

Taking a direct current power system as an example, the power supplies 12 may be alternating current power supplies, and each power supply 12 is from a power supply of a different line; the electric equipment 13 is direct current electric equipment, and the electric equipment 13 comprises, but is not limited to, direct current electric equipment such as computers and servers.

The input sides of the power distribution modules 11 are respectively connected with power supplies 12 of different lines, and the output sides of the power distribution modules 11 are connected in parallel, so that when one power supply 12 fails, the power supplies 12 of the other lines are utilized to supply power to the electric equipment 13, and uninterrupted power utilization of the electric equipment 13 can be achieved, wherein fig. 1 shows an example that a power supply redundancy circuit 10 comprises three paths of power distribution modules 11.

The power distribution module 11 may be a circuit for converting an AC power source into a DC power, for example, an AC/DC rectifying circuit, or may be a device capable of converting an AC power into a DC power. Thus, the dc consumer can be powered by the power distribution module 11.

Taking the power redundancy circuit 10 as an example, the power redundancy circuit comprises two paths of power distribution modules 11 and a power supply 12 as alternating current power supplies, as shown in fig. 2, the power distribution modules 11 comprise a first power distribution module and a second power distribution module, the power supply 12 comprises a first alternating current power supply and a second alternating current power supply, the first alternating current power supply and the second alternating current power supply are alternating current power supplies with different paths, and the electric equipment 13 comprises first direct current electric equipment and second direct current electric equipment; the alternating current input side of the first power distribution module is connected with a first alternating current power supply, the alternating current input side of the second power distribution module is connected with a second alternating current power supply, the first power distribution module is connected with the second power distribution module in parallel, the direct current output side of the first power distribution module is connected with first direct current electric equipment, and the direct current output side of the second power distribution module is connected with second direct current electric equipment.

In the power supply redundancy circuit provided by the embodiment of the application, the power supply redundancy circuit comprises a plurality of paths of power distribution modules; the input sides of the power distribution modules are respectively connected with different power supplies, and the output sides of the power distribution modules are connected in parallel and then connected with electric equipment. In the power supply redundant circuit, at least two paths of different power supplies are guaranteed to supply power on the input side of the power distribution module, so that when one path of power supply has a problem, the other path of power supply can continuously supply power for the power distribution module; in addition, the output sides of the multipath power distribution modules are connected in parallel, and under the condition, the power distribution modules can be guaranteed to supply power to electric equipment uninterruptedly, so that the power supply continuity and the working continuity of the electric equipment are guaranteed, and the reliability of power supply of the power supply redundancy circuit is improved.

In order to ensure the power supply continuity, a plurality of power supply modules may be provided for each power distribution module 11, which will be described below by way of one embodiment. In one embodiment, as shown in fig. 3, each power distribution module 11 includes at least two power supply modules 31 therein; the input sides of at least two power supply modules 31 in each power distribution module 11 are connected with the same power supply 12, the output sides of the power supply modules 31 in each power distribution module 11 are respectively and correspondingly connected with one electric equipment 13, and the output sides of at least two power supply modules 21 in each power distribution module 11 are connected in parallel.

The power supply module is configured to convert the received AC power into dc power, and the power supply module 31 may be a power supply circuit or a power supply device, for example, the power supply module 31 is an AC/CD circuit.

In order to improve the reliability of the power distribution modules 11, at least two paths of power supply modules 31 are configured in each power distribution module 11, and in the same power distribution module 11, the input sides of the power supply modules 31 are all connected with the same power supply 12, i.e. all the power supply modules 31 in one power distribution module 11 are connected with the same power supply 12, and the output sides of the power supply modules 31 in each path are respectively connected with one electric equipment 13.

The number of the power supply modules in each power distribution module 11 at least comprises two, wherein the number of the power supply modules in each power distribution module 11 can be the same or different; for example, the power supply redundancy circuit 10 includes two power distribution modules 11, one power distribution module 11 includes two power supply modules, and the other power distribution module 11 includes three power supply modules; fig. 3 shows an example in which two power supply modules are included in each power distribution module 11.

Taking the power redundancy circuit 10 as an example, two paths of power distribution modules 11 are included in the power redundancy circuit 10, each path of power distribution module 11 includes two paths of power supply modules, as shown in fig. 4, the power distribution modules 11 include a first power distribution module and a second power distribution module, the power supply 12 includes a first ac power supply and a second ac power supply, the first ac power supply and the second ac power supply are ac power supplies in different paths, the first power distribution module includes a first power supply module and a second power supply module, the second power distribution module includes a third power supply module and a fourth power supply module, and the power consumption device 13 includes a power consumption device 1, a power consumption device 2, a power consumption device 3 and a power consumption device 4; the first power supply module is connected with the electric equipment 1, the second power supply module is connected with the electric equipment 2, the third power supply module is connected with the electric equipment 3, the fourth power supply module is connected with the electric equipment 4, and the output sides of the first power supply module, the second power supply module, the third power supply module and the fourth power supply module are connected in parallel.

Thus, even if one alternating current power supply has a problem, the other alternating current power supply continuously supplies power to the electric equipment; for example, when the first alternating current power supply has a problem, the second alternating current power supply works normally, and power is supplied to the electric equipment 1, the electric equipment 2, the electric equipment 3 and the electric equipment 4 through the third power supply module and the fourth power supply module; and, even if any power supply module goes wrong, other power supply modules can continue to supply power for the consumer, guarantee the normal operating of consumer, for example, if first power supply module goes wrong, second power supply module, third power supply module and fourth power supply module can continue to supply power for consumer 1.

In the power supply redundant circuit provided by the embodiment of the application, each power distribution module comprises at least two paths of power supply modules; the input sides of at least two paths of power supply modules in each power distribution module are connected with the same power supply, the output sides of all paths of power supply modules in each power distribution module are respectively and correspondingly connected with one electric equipment, and the output sides of at least two paths of power supply modules in each power distribution module are connected in parallel. In the power supply redundant circuit, at least two paths of power supply equipment are configured in the power distribution module, the output sides of the power supply equipment in each distribution module are connected in parallel, the parallel redundant circuit is formed in the power distribution module, when one power supply equipment has a problem, the other power supply equipment can continuously supply power to electric equipment, uninterrupted power supply of the power supply redundant circuit is realized, and therefore the reliability of power supply of the power supply redundant circuit is improved.

In one embodiment, as shown in fig. 5, each power supply module includes a switching power supply 51, where an input side of the switching power supply 51 in each power supply module is connected to the power supply 12, and an output side of the switching power supply 51 is connected to the electric device 13 with a power requirement less than a preset value.

The switching power supply 51 is a high-frequency power conversion device, and functions to convert a voltage of one level into a voltage or current required by a user terminal through different types of architectures. The input of the switching power supply 51 may be an ac power supply (e.g., mains supply) or a dc power supply, and the output may be a device requiring a dc power supply, such as a personal computer; the switching power supply 51 is used for converting voltage and current between an input power supply and electric equipment.

If the powered device is a dc powered device, the switching power supply 51 is a dc switching power supply. Taking the switching power supply 51 as a dc switching power supply for example, the dc switching power supply can convert an original ecological power supply with poor power quality, such as a mains power supply or a battery power supply, into a dc voltage with high quality that meets the requirements of the device.

Wherein the switching power supply 51 may include a DC/DC converter, which may be a full-bridge DC/DC converter; the switching power supply 51 may further include a rectifier circuit, a filter circuit, and the like.

The input side of the switching power supply 51 is connected with the power supply 12 corresponding to the power supply module, and the output side of the switching power supply 51 is connected with the electric equipment 13 corresponding to the power supply module. Continuing with the description of fig. 5, the output sides of the switching power supplies 51 in the power supply redundancy circuit 10 are all connected in parallel, and the switching power supplies 51 are each connected to one electric device 13, and fig. 5 illustrates an example in which two power distribution modules 11 are used and two power supply modules 31 are used in each power distribution module 11.

Alternatively, the switching power supply 51 is aimed at miniaturization, light weight, and high efficiency, and thus, the switching power supply 51 may output a voltage smaller than a preset value, and thus, the electric device 13 connected to the output side of the switching power supply 51 is a device whose power demand is smaller than the preset value; for example, the output voltage of the switching power supply 51 may be 5V, 12V, 15V, 24V, 48V, 240V, etc., and the power demand of the powered device 13 may be 5V, 12V, 15V, 24V, 48V, 240V, etc.; the preset value may be 300V.

In the power supply redundancy circuit provided by the embodiment of the application, each power supply module comprises a switching power supply, and the input side of the switching power supply in each power supply module is connected with a power supply, and the output side of the switching power supply is connected with electric equipment with the power requirement smaller than a preset value. In the power supply redundancy circuit, the input side of the switching power supply is connected with the power supply, the output side of the switching power supply is connected with the electric equipment, and the voltage conversion between the power supply and the electric equipment is carried out through the switching power supply, so that the efficiency of the voltage conversion can be improved, and the reliability of power supply is improved; the output voltage is stable, and the stable voltage can be output without an additional voltage stabilizing circuit, so that the power supply can be continuously and reliably powered by the switching power supply.

Since the internal resistances of each switching power supply may be slightly different, the output voltages of the switching power supplies may not be completely uniform. Therefore, the switching power supplies are used in parallel, the output power of each switching power supply is different, the phenomenon of idle or busy can possibly occur, and some switching power supplies work in overload, so that loss and heating are more severe, and the service life can be reduced; the power supply has the advantages that the power supply is light in load, even the power supply does not enter a good working state, the service life of the power supply is also unfavorable, based on the power supply, the power supply can be used in parallel by utilizing the current-sharing potential of the power supply, and the output is evenly distributed to the power supply, so that the output power is basically the same. In one embodiment, as shown in fig. 6, each switching power supply 51 is provided with a current sharing point location 61, and the current sharing points 61 of the switching power supplies 51 are connected in parallel through a common bus.

Each switching power supply 51 is provided with a current sharing point, and current sharing of the switching power supply 51 is achieved by connecting the current sharing point 61 of the switching power supply 51.

The current sharing points of the switch power supplies can be connected in parallel on a common bus, and the output of the switch power supplies is evenly distributed, for example, under the condition that no current sharing point is connected in parallel, the output voltage of the switch power supply A is 10V, the output voltage of the switch power supply B is 30V, and after the current sharing points of the switch power supply A and the switch power supply B are connected in parallel through the common bus, the output voltages of the switch power supply A and the switch power supply B are 20V.

In one embodiment, the embodiment of the application also provides a circuit structure diagram of a power supply redundancy circuit 10, as shown in fig. 7, L represents zero line, N represents live line, two different paths of alternating current power supplies (L1, N1 and L2, N2) are respectively introduced, and are connected to the alternating current input side of the switching power supply, the L1 and N1 alternating current power supplies respectively power the first switching power supply and the second switching power supply, and the first partial redundancy is realized from the power supply side.

All the four switching power supply output sides are used in parallel from the switching power supply output sides (V+ and V-), the direct current output sides are controlled to realize the second partial redundancy, and the output side of each switching power supply can be connected with one direct current electric equipment. In addition, the current equalizing points (P+ and P-) of the four switching power supplies are also connected in parallel.

In the power supply redundancy circuit provided by the embodiment of the application, the current sharing points of the switch power supplies are connected in parallel through the common bus, so that the uniform distribution of current stress and thermal stress among the switch power supplies is ensured, one or more switch power supplies are prevented from working in a current limit state, and the service life of each switch power supply is prolonged.

In one embodiment, as shown in fig. 8, each power supply module 31 further includes a voltage transmitter 81, and an input side of the voltage transmitter 81 in each power supply module 31 is connected to the power source 12, and an output side of the voltage transmitter is connected to the electric device 13 with a power requirement greater than a preset value. Fig. 8 shows an example of one power supply module.

The voltage transducer 81 is a device for converting the measured electric quantity parameter into a direct current, a direct voltage and isolating and outputting an analog signal or a digital signal.

The input side of the voltage transmitter 81 is connected with the power supply 12, the output side is connected with the electric equipment 13, the voltage transmitter 81 can convert alternating current or direct current in the power supply 12 into direct current to supply the electric equipment, and the voltage transmitter 81 can convert the voltage of the power supply 12 into high voltage to be output, so that the output side of the voltage transmitter 81 can be connected with the electric equipment with the power requirement larger than a preset value; for example, the output side of voltage transmitter 81 may be connected to a consumer having a power requirement of 400V.

It should be noted that, the output side of the switching power supply 51 may be connected to an electric device with a smaller power demand, the voltage transmitter 81 may be connected to an electric device with a larger power demand, and the dc power supply side to which the electric device is connected, that is, the switching power supply 51 or the voltage transmitter 81, may be determined according to the actual demand of the electric device.

According to the power supply redundancy circuit provided by the embodiment of the application, the voltage transmitter is configured in the power supply module, so that the switching power supply supplies power for the direct current electric equipment with smaller power demand, and the voltage transmitter supplies power for the direct current electric equipment with larger power demand, thereby improving the reliability of power supply of the electric equipment and ensuring the safety of power utilization of the electric equipment.

In one embodiment, as shown in fig. 9, each power supply module further includes a communication module 91, and the communication module 91 in each power supply module is connected to the switching power supply 51; each communication module 91 is used for performing communication between the corresponding power supply module 31 and the external device 92. Fig. 9 shows an example of one power supply module 31.

The communication module 91 is connected to the switching power supply 51, and the switching power supply 51 is used for supplying power to the communication module 91, where the communication module 91 realizes communication between the power supply module 31 and the external device 92 when the switching power supply 51 supplies power. The external device 92 may be a host computer including, but not limited to, a smart terminal, a personal computer, a workstation, a processor, a wearable smart device, a notebook computer, a server, and the like.

The communication module 91 may be a remote measurement and control unit device (Remote Terminal Unit, RTU) with monitoring of signals and status of various components in the power module, which may send the measured signals or status to the external device 92.

Taking the power redundancy circuit 10 including two power distribution modules 11, and each power distribution module 11 includes two power supply modules 31 as an example, in fig. 4, the first power supply module includes a first switching power supply and a first communication module, the first communication module is connected with the first switching power supply, the first switching power supply supplies power to the first communication module, and the first communication module realizes communication between the first power supply module and an external device.

The second power supply module comprises a second switching power supply and a second communication module, the second communication module is connected with the second switching power supply, the second switching power supply supplies power for the second communication module, and the second communication module realizes communication between the second power supply module and external equipment.

The third power supply module comprises a third switching power supply and a third communication module, the third communication module is connected with the third switching power supply, the third switching power supply supplies power for the third communication module, and the third communication module realizes communication between the third power supply module and external equipment.

The fourth power supply module comprises a fourth switching power supply and a fourth communication module, the fourth communication module is connected with the fourth switching power supply, the fourth switching power supply supplies power for the fourth communication module, and the fourth communication module realizes communication between the fourth power supply module and external equipment.

The power supply module may include a circuit breaker, a contactor, a fuse, and the like, in addition to the switching power supply 51 and the communication module 91. When the communication module 91 performs communication between the power supply module and the external device 92, status information in the elements such as the switching power supply 51, the circuit breaker, the contactor, and the fuse in the power supply module may be transmitted to the external device 92. In one embodiment, as shown in fig. 10, each communication module 91 includes a telemetry circuit 101 and a telemetry circuit 102, where the telemetry circuit 101 and the telemetry circuit 102 are connected to the switching power supply 51.

A remote signaling circuit 101 for communicating switching value information of each element in the corresponding power supply module with the external device 92; telemetry circuitry 102 for communicating electrical quantity information corresponding to each element in the power module with external device 92.

The remote signaling circuit 101 may collect switching value information of elements such as the switching power supply 51, the circuit breaker, the contactor, and the fuse in the power supply module.

In one embodiment, as shown in fig. 11, the telemetry circuit 101 may include a microcontroller (Microcontroller Unit, MCU) 111, an analog-to-digital converter 112 (Analog to Digital Converter, ADC) 112, a photo-isolation circuit 113, a power distribution device interface 114; the power distribution device interface 114 is connected with the switching power supply 51, the analog-to-digital converter 112 and the photoelectric isolation circuit 113 are connected with the power distribution device interface 114, the analog-to-digital converter 112 and the photoelectric isolation circuit 113 are connected with the microcontroller 111, the power distribution device interface 114 can receive external remote signaling quantity, the external remote signaling quantity comprises switching value information of elements in a power supply module and the like, and the analog-to-digital converter 112 is used for collecting the voltage value of the switching power supply 51 and realizing analog-to-digital conversion; the photoelectric isolation circuit 113 realizes isolation and level conversion of external remote signaling quantity; the photoelectric isolation circuit 113 outputs different signal voltages to the microcontroller 111 according to the magnitude of the external input voltage; the microcontroller 111 is used for accessing the switching value information of each element collected by the analog-to-digital converter 112 and the photoelectric isolation circuit 113; the microcontroller 111 may transmit the collected switching value information to the external device 92.

In one embodiment, the electrical quantity information includes voltage and current, and the telemetry circuit 102 may include an isolated voltage sampling circuit 121, an isolated current sampling circuit 122, a filtering circuit 123, and an analog-to-digital conversion circuit 124, where the isolated voltage sampling circuit 121 and the isolated current sampling circuit 122 are configured to collect voltage signals and current signals in the power supply module in real time, and output the collected data to the analog-to-digital conversion circuit 124 through the filtering circuit 123, and the analog-to-digital conversion circuit transmits the voltage signals and the current signals to the external device 92.

In the power supply redundancy circuit provided by the embodiment of the application, each communication module comprises a remote signaling circuit and a remote sensing circuit, and the remote signaling circuit and the remote sensing circuit are connected with a switching power supply; the remote signaling circuit is used for communicating the switching value information of each element in the corresponding power supply module with external equipment; and the telemetry circuit is used for communicating the electrical quantity information of each element in the corresponding power supply module with external equipment. In the embodiment, the remote signaling circuit and the remote sensing circuit are configured in the power supply module, so that the switching value and the electric value of each element in the power supply module can be transmitted to the external equipment, the power supply module can be monitored through the external equipment, and the safety of the power supply module is ensured.

In one embodiment, as shown in fig. 13, the power redundancy circuit 10 further includes a rack-mounted electrical cabinet 131, and each power distribution module 11 is plugged into the rack-mounted electrical cabinet 131.

Taking a data center as an example, the rack-mounted electric cabinet 131 may be included in a power plant of the data center to provide a part of electric power required by the data center, and may be used to operate direct current of the data center. The direct current power distribution system may distribute a portion of the power generated by the power plant to one or more rack-mounted electrical cabinets 131, and the rack-mounted electrical cabinets 131 may provide power to the powered devices of the data center.

The rack-mounted electric cabinet 131 can comprise a plurality of plugging positions, the power distribution module 11 can be directly plugged into the rack-mounted electric cabinet 131, a current output end in the power distribution module 11 is connected with a plugging point in the plugging position, the output side of the power distribution module 11 transmits direct current into the rack-mounted electric cabinet 131, and the rack-mounted electric cabinet 131 supplies the direct current to electric equipment connected with the rack-mounted electric cabinet 131.

Each power distribution module 11 can be inserted into the rack-mounted electric cabinet 131, so that the output sides of the power distribution modules 11 are connected in parallel; specifically, each power distribution module 11 includes a power supply module 31, each power distribution module 11 is plugged into a rack-mounted electric cabinet 131, and essentially, each power supply module 31 is plugged into the rack-mounted electric cabinet 131, and there are a plurality of plugging positions in the rack-mounted electric cabinet 131, and each power supply module 31 is plugged into a corresponding plugging position.

It should be noted that, fig. 11 does not illustrate a three-dimensional structure of the rack-mounted electric cabinet 131, and only an illustration of a front view of each power distribution module 11 plugged into the rack-mounted electric cabinet 131 is made.

In the power supply redundancy circuit provided by the embodiment of the application, the power supply redundancy circuit also comprises the rack-mounted electric cabinet, each power distribution module is inserted into the rack-mounted electric cabinet, and the power distribution modules are directly inserted into the rack-mounted electric cabinet by configuring the rack-mounted electric cabinet and the power distribution modules, so that continuous power supply to electric equipment can be realized more conveniently.

In one embodiment, the present application also provides a dc power distribution system including the power redundancy circuit of any of the above embodiments.

In the embodiment of the application, the direct current power distribution system supplies power to the electric equipment when the electric equipment has useful electricity, and the power supply continuity of the electric equipment is ensured.

In the power supply redundancy circuit provided by the embodiment of the application, a plurality of power distribution modules connected with different power supplies are configured, the output sides of the switching power supplies in the power distribution modules are all connected in parallel, and the power supply redundancy circuit adopts a plurality of paths of power supplies and is used for redundant power supply of the switching power supplies, so that the power supply redundancy circuit is suitable for the architecture of a direct current power distribution system, can effectively avoid faults and has high practicability.

In one embodiment, the present application also provides a power supply apparatus including the dc power distribution system of the second aspect.

In the embodiment of the application, the power supply equipment is a fitting for providing power for the electric equipment through the power supply equipment when the electric equipment is in need of electricity, the power supply equipment is connected with a plurality of paths of alternating current power supplies, an internal circuit of the power supply equipment is the power supply redundancy circuit, and redundant power supply is realized for the electric equipment through a plurality of power distribution modules and the power distribution modules which are connected in parallel.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims (10)

1. The power supply redundancy circuit is characterized by comprising a plurality of paths of power distribution modules; the input sides of the power distribution modules are respectively connected with different power supplies; the output sides of the power distribution modules are connected in parallel; each power distribution module comprises at least two paths of power supply modules; the input sides of at least two paths of power supply modules in each power distribution module are connected with the same power supply, the output sides of all paths of power supply modules in each power distribution module are respectively and correspondingly connected with one electric equipment, and the output sides of at least two paths of power supply modules in each power distribution module are connected in parallel.

2. The power redundancy circuit of claim 1, wherein each power supply module includes a switching power supply, and wherein an input side of the switching power supply in each power supply module is connected to the power supply, and an output side of the switching power supply is connected to a powered device having a power demand less than a predetermined value.

3. The power supply redundancy circuit according to claim 2, wherein each switching power supply is provided with a current sharing point, and the current sharing points of the switching power supplies are connected in parallel through a common bus.

4. A power redundancy circuit according to claim 2 or claim 3, wherein each of said power supply modules further comprises a voltage transmitter, the input side of the voltage transmitter in each of said power supply modules being connected to said power supply and the output side being connected to a consumer having a power demand greater than said predetermined value.

5. A power supply redundancy circuit according to claim 2 or claim 3, wherein each of said power supply modules further comprises a communication module, the communication module in each of said power supply modules being connected to a switching power supply;

Each communication module is used for communicating the corresponding power supply module with external equipment.

6. The power supply redundancy circuit of claim 5, wherein the switching power supply comprises a DC/DC converter.

7. The power redundancy circuit of claim 5, wherein each of said communication modules comprises a telemetry circuit and a telemetry circuit, each of said telemetry circuit and telemetry circuit being connected to said switching power supply;

The remote signaling circuit is used for communicating switching value information of each element in the corresponding power supply module with external equipment;

And the telemetry circuit is used for communicating the electrical quantity information of each element in the corresponding power supply module with the external equipment.

8. A power supply redundancy circuit according to any one of claims 1 to 3, further comprising a rack-mounted electrical cabinet in which each of said power distribution modules is plugged.

9. A direct current power distribution system comprising a power redundancy circuit according to any one of claims 1 to 8.

10. A power supply apparatus comprising the direct current power distribution system of claim 9.