CN110955317B

CN110955317B - Power module and complete machine cabinet

Info

Publication number: CN110955317B
Application number: CN201911060571.3A
Authority: CN
Inventors: 刘造; 姚益民; 高俊恩
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2022-04-05
Anticipated expiration: 2039-11-01
Also published as: CN110955317A; WO2021082927A1

Abstract

The application provides a power module, include: a plurality of power module and with the static change over switch of double-circuit of power module one-to-one, the static change over switch of double-circuit for when arbitrary way among the double-circuit input falls the power, with the another way of input automatic switch-over into the double-circuit input, every power module among a plurality of power modules includes first end and second end, and the first end is used for connecting the correspondence the static change over switch of double-circuit, the second end is used for connecting the load, for the load power supply. The power supply modules are provided with the two-way static transfer switch according to the proportion of 1:1 for input switching during power failure, and the power supply modules are provided with a small amount of redundancy configuration, so that normal power supply can be realized when individual power supply modules fail, high reliability is achieved, the number of the power supply modules required by backup is reduced, cost is reduced, space is provided for deploying computing nodes and the like of the whole cabinet, and the density of the whole cabinet is improved. The application also provides a corresponding whole cabinet.

Description

Power module and complete machine cabinet

Technical Field

The application relates to the field of electric power, especially, relate to a power module and whole rack.

Background

With the development of cloud computing technology, the scale of cloud data centers is larger and larger, and the requirements of enterprises on the density, the cost and the energy efficiency of a power supply system are higher and higher. Server manufacturers begin to plan a whole cabinet server to support such a scenario, and currently, the mainstream whole cabinet server mainly includes two types, namely a single-mains supply cabinet entering type and a double-mains supply cabinet entering type.

The reliability of the single commercial power entering the cabinet is lower than that of the double-path entering the cabinet, and the double-path entering the cabinet is generally of a 2N structure, namely the power supply is configured by N + N, so that the number of the configured power supplies of the cabinet is large, the cost is high, and the density is low.

Therefore, the power supply scheme with high reliability, low cost and high density is a problem to be solved urgently.

Disclosure of Invention

The application provides a power module and whole rack has solved the problem that can't realize reliability, cost and density and compromise among the existing power supply scheme, has realized that the reliability is high, and with low costs, the high power supply scheme of density.

The present application provides a Power module, which specifically includes a plurality of Power Supply Units (PSUs) and a two-way Static Transfer Switch (STS) corresponding to the Power Supply modules one to one, where each PSU includes a first end and a second end, where the first end can be understood as an input end for connecting with the two-way STS corresponding to the PSU, and the second end can be understood as an output end for connecting with a load, and when any one of the two-way inputs is powered down, the STS can automatically Switch the input into the other of the two-way inputs to Supply Power to the load.

By configuring the two paths of STSs for the power supply modules according to the proportion of 1:1, when any one path of the two-path input is powered off, the two paths of STSs can be automatically switched to the other path, and a small amount of redundancy configuration is carried out on the power supply modules, so that the power supply can be normally supplied when the individual power supply modules or the static transfer switches are in fault without backup configuration, and the reliability is high.

In a first possible implementation manner of the first aspect, the power module may be configured to be detachable, and specifically, the power module may further be connected to a switch slot, and the dual-path STS may be plugged into the power module through the switch slot. Therefore, under the single-path input scene, the two paths of STSs can be removed, the power module is directly used for supplying power to the load, and the compatibility of the power module is improved.

In a second possible implementation manner of the first aspect, the power module may also be integrated, and specifically, the dual-path STS may be integrated into the power module, so that on one hand, assembly operations may be reduced, and assembly efficiency may be improved, and on the other hand, the size of the power module may be reduced, and space may be saved.

In a third possible implementation manner of the first aspect, to avoid the influence of the dual-input power failure as much as possible, a dual-path STS with a smaller switching time may be selected and configured, and in actual application, a dual-path STS with a switching time smaller than the longest power failure time supported by the PSU may be selected. As an example, a two-way STS with a switching time of 10 milliseconds may be selected.

With reference to the first aspect or any one of the first to third implementation manners of the first aspect, in a fourth implementation manner of the first aspect, the power module may be compatible with different power supply scenarios, such as a two-way ac input scenario, a hybrid two-way input scenario of ac and high-voltage dc, or a two-way high-voltage dc input scenario.

With reference to the first aspect or any one of the first to third implementation manners of the first aspect, in a fifth implementation manner of the first aspect, the number of power supply modules may be set to be at least 1 greater than a ratio of a required power of the load to a power of a single power supply module. Assuming that the ratio of the required power of the load to the power of a single power module is N, the number of power modules in the power module is at least N + 1. Therefore, even if one power module or one double-path STS fails, normal power supply to the load can be realized.

In addition, when the value of N is large, compared with an N + N backup architecture in an Uninterruptible Power Supply (UPS), the number of Power modules can be reduced to a large extent by N +1 and other redundant architectures, and the reduction range is nearly 50%, so that the Power Supply cost can be greatly reduced, the space is saved for deploying loads such as a computing node in the whole cabinet, and the density of the whole cabinet is improved.

The second aspect of the present application provides a complete machine cabinet, the complete machine cabinet includes a load and the power module as in the first aspect of the present application, wherein, power module and load set up among the cabinet body of complete machine cabinet, and the power module is used for supplying power for the load based on dual input.

The power supply module and the load are integrated in the cabinet, so that the hardware platform can be flexibly configured according to user requirements, the space utilization rate of the cabinet is improved, and the cost is reduced. Moreover, the whole cabinet transfers most of assembly work to a factory to be completed in advance, and the whole cabinet is directly deployed on site quickly, so that the delivery efficiency is greatly improved.

In a first implementation manner of the second aspect, the load may specifically include a server and a switch, so that non-computer architecture modules such as a power supply and a switch and a computer architecture module such as the server may be integrated into one cabinet, thereby implementing centralized power supply and heat dissipation, improving power efficiency, and reducing the energy consumption level of the server.

In a second implementation manner of the second aspect, the complete equipment cabinet may further include a battery, and the battery may be specifically used for supplying power to the load when the dual-input power fails, so as to improve reliability of power supply.

With reference to the second aspect, the first implementation manner or the second implementation manner of the second aspect, in a third implementation manner of the second aspect, the power module and the load may be connected to the cabinet body of the entire cabinet through respective corresponding terminals, so that the power module and the load may be conveniently detached, and when a fault occurs in a particular power module or load, the power module or the load may be conveniently repaired or replaced.

Drawings

Fig. 1 is a schematic plan view illustrating a power module according to an embodiment of the present disclosure;

fig. 2 is a schematic three-dimensional structure diagram of a power module according to an embodiment of the present disclosure;

FIG. 3 is a circuit diagram of a static transfer switch in the power module according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of the entire cabinet in the embodiment of the present application;

fig. 5 is a schematic three-dimensional structure diagram of a power frame in an embodiment of the present application.

Detailed Description

With the development of cloud computing technology, the demand of the internet for data is explosively increased, which greatly promotes the market demand of cloud data centers. The cloud data center is a cooperative device network, and is used for transmitting, accelerating, displaying, calculating and storing data information on a network infrastructure, and in order to avoid influencing user experience, a power supply scheme with high reliability needs to be provided for the cloud data center.

The Open Computing Project (OCP) provides a single-mains-supply cabinet-entry deployment cloud data center, and although the energy consumption is reduced to some extent, the reliability is difficult to guarantee. Based on this, the Open Data Center Committee (ODCC) provides a dual-channel cabinet, and the N + N power architecture can supply power through one power supply and the other power supply when the other power supply is powered off. However, the N + N power architecture increases the initial equipment investment cost on one hand, increases the energy consumption cost during operation on the other hand, and has lower power supply density.

Based on this, this application embodiment provides a power module, through increase a double-circuit STS at every power module front end, power module's the other end is used for connecting the load, so, when arbitrary way in the double-circuit input falls the power, can be with another way in the automatic switch-over double-circuit input of input, power module is the load power supply based on this another way, avoids falling the power and influences load normal operating, has improved the power supply reliability.

Moreover, in the scheme, each power supply module is connected with the two-way input through the corresponding two-way STS instead of being respectively connected with one way of the two-way input through two power supply modules, so that the normal power supply can be realized when a single power supply module or the two-way STS fails only by configuring a small number of redundant power supply modules without adopting an N + N architecture to configure a backup power supply module, the power supply reliability is further improved, the number of the power supply modules needing to be configured is greatly reduced, the cost is reduced, the cabinet space is saved, and the power supply density can be improved.

Embodiments of the present application are described below with reference to the accompanying drawings. As can be known to those skilled in the art, with the development of technology and the emergence of new scenarios, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and are merely descriptive of the various embodiments of the application and how objects of the same nature can be distinguished. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to the schematic plan structure of the power supply module shown in fig. 1, the power supply module 10 includes a plurality of power supply modules 11 and two-way static transfer switches 12 corresponding to the power supply modules one to one, where each power supply module 11 includes a first end 111 and a second end 112, the first end 111 is used for connecting the corresponding two-way static transfer switch 12, and the second end 112 is used for connecting a load 20 to supply power to the load 20. The load 20 may be any device requiring power supply, such as a computing device, e.g., a server, a switching device, e.g., a switch router, etc.

The two-way static transfer switch 12 is input as two ways, specifically may be two-way commercial power, as shown in fig. 1, the two-way commercial power may be represented as commercial power a and commercial power B, and the two-way static transfer switch 12 may automatically switch the input to the other way when any one of the two-way commercial power fails, so as to avoid the load 20 from being affected by the power failure.

In a specific implementation, the two-way static transfer switch 12 may set one of the two ways, for example, the utility power a, as a default utility power, the power module 11 may generally supply power to the load 20 based on the default utility power, and when the default utility power is powered down, the two-way static transfer switch 12 immediately switches the input to the utility power B. Of course, in some cases, when the default utility power, such as the utility power a, is restored, the two-way static transfer switch 12 may also switch the input back to the default utility power, i.e., the utility power a.

It should be noted that the "two-way" is not limited to two-way, and in practical applications, the "two-way" may also be a multi-way input derived from two-way sources, such as four-way inputs derived from two generator sets, and so on.

In practical applications, the power module 10 may be detachable, and specifically, the power module may further be connected to a switch slot, and the dual STS may be plugged into the power module through the switch slot. Of course, the power module 11 and the two-way static transfer switch 12 may also be connected by a board card, and the power module 10 is assembled and disassembled by plugging and unplugging the board card.

Referring to the three-dimensional structure diagram of the power module shown in fig. 2, as shown in fig. 2, the power module 10 is mounted on a Board card 13, where the Board card 13 may be specifically a Printed Circuit Board (PCB), the PCB is conducted in the vertical direction, and the power module 11 and pins of the two-way static transfer switch 12 corresponding to the power module are inserted into a line in the vertical direction, so that the connection between the power module 11 and the two-way static transfer switch 12 can be achieved.

Furthermore, the corresponding lead terminal 14 can be inserted at a corresponding position of the PCB, specifically, a position on a straight line where the power module 11 and the two-way static transfer switch 12 are located, so that the lead terminal 14 is connected with the two-way static transfer switch 12, and thus, the two-way commercial power can be input to the two-way static transfer switch 12 through the lead terminal 14.

Therefore, the power module can be detached, the double-circuit static transfer switch can be detached under the scene of single-circuit commercial power input, the power module is directly utilized to supply power for the load, and the compatibility of the power module is improved.

In consideration of the situation that the number of power modes configured in the cabinet is large, in order to reduce assembly work and save deployment time, the two-way static transfer switch can be integrated into the power module before the two-way static transfer switch leaves a factory. On the one hand, the assembly time can be reduced, the delivery efficiency is improved, on the other hand, the double-path static transfer switch is integrated, the size of the whole power module can be reduced, and the space is saved. And the protection of the two-way static transfer switch can be realized by integrating in a packaging mode.

It should be noted that, a certain time is required for the dual-path static transfer switch to perform the switching of the mains supply input, and in order to reduce the influence of the power failure on the load as much as possible, the dual-path static transfer switch with the shorter switching time may be selected and configured, specifically, the dual-path static transfer switch with the switching time shorter than the maximum power failure time supported by the power module may be selected and configured, so that, when the switching is performed, the power may be supplied by the electric energy stored in the power module itself. After the switching is successful, the power can be supplied by the switched commercial power input.

For ease of understanding, the switching process is described in detail below in connection with a circuit diagram of a two-way static transfer switch.

Referring to the circuit diagram of the two-way static transfer switch shown in fig. 3, the two-way static transfer switch includes two live wires L1 and L2 and two neutral wires N1 and N2, the two live wires L1 and L2 are connected, and a Current Transformer Assembly (CTA) is further connected at the connection position, specifically, the Current Transformer Assembly (CTA) is connected with CTA1, two zero lines N1 and N2 are connected, each live line or each zero line is connected with a Relay (Relay, RLA), a Current Transformer CTA and a Silicon Controlled Rectifier Assembly (SCRA), specifically, for L1, which is connected with RLA1, CTA2, RLA5 and SCRA1, SCRA2, wherein SCRA1, SCRA2 were connected in parallel with RLA5, then connected in series with RLA1, CTA2 as a whole, for N2, which is connected with RLA2, SCRA3, SCRA4 and RLA6, wherein, the SCRA3, the SCRA4 and the RLA6 are connected in parallel, then the whole is connected with RLA2 in series, and the connection relationship of L2 and N2 in RLA, CTA and SCRA is the same as that of L1 and N1, which is not described in detail herein.

In practical applications, the states of RLA 1-RLA 4 are electrically related to whether L1, N1, L2, N2, respectively. When L1, N1, L2, N2 are powered, the load is powered by default L1, at which time RLA1, RLA2, RLA3, RLA4 are closed, furthermore RLA5, RLA6 are closed, RLA7, RLA8 are open. When power is lost to the L1 and the N1, the RLA1, the RLA2, the RLA5 and the RLA6 are disconnected, the RLA7 and the RLA8 are closed, and power is switched from the L1 to the L2.

In addition, considering the switching time, when switching is carried out, the SCRA is firstly conducted, and because the SCRA cannot flow through for a long time, the RLA connected with the SCRA in parallel is then closed to bypass the SCRA, and the double-input fast switching is realized. In some cases, the switching time may be controlled to within 10 milliseconds.

In the switching process, a load is powered by a capacitor and other devices which store charges in the power module in advance, which are not shown in fig. 3, so that uninterrupted power supply is realized, and high reliability is achieved.

In the above embodiments, the two-way input may be an Alternating Current (AC) input, i.e., AC + AC; or a double-path High Voltage Direct Current (HVDC) input, i.e. HVDC + HVDC; or a mixed two-way input of alternating current and high voltage direct current, i.e. HVDC + AC.

Therefore, the method realizes compatibility with various input systems of the cloud data center through one architecture, has better compatibility, can supply power in a self-adaptive manner when the input systems are changed, and avoids the labor cost, the time cost, the material cost and the like caused by the modification of the power supply architecture of the data center.

It will be appreciated that the number of power modules is configured according to the load requirements. In consideration of the need to provide redundancy for the power modules, in some possible implementations, the number of power modules is at least 1 greater than the ratio of the power demanded by the load to the power of a single power module, and for convenience of description, the ratio of the power demanded by the load to the power of a single power module may be referred to as N, that is, the number of power modules is at least N + 1. As an example, N +1 power modules may be configured in a power module.

Compared with the traditional N + N framework, the scheme can greatly reduce the number of power modules needing to be configured, the number of the power modules is reduced by nearly 50% from N + N to N +1, so that the power supply cost is greatly reduced, and more spaces are reserved for other equipment in the cabinet due to the reduction of the number of the power modules, so that the power supply density can be improved.

Certainly, because the number of the power modules is one more than that of the power modules in normal demand, when one power module or one double-circuit static transfer switch in the power module fails, power can be supplied through the rest power modules, and the reliability is further improved. And provides sufficient time for replacement or repair of a faulty power module or the like.

It should be noted that fig. 1 and fig. 2 are illustrated by taking an example in which a required power is 9 Kilowatts (KW), in this example, the power of each power supply module is 3KW, a conventional power supply scheme adopts 3+3 power supply modules to supply power, and the scheme of the present application may adopt 3+1 power supply modules to supply power.

In other possible implementations of the present application, when the required power and the power of the power modules vary, the number of the power modules may also vary accordingly, and is not limited to the 4 shown in fig. 1 and 2.

From the above, the embodiment of the application provides a power module, which configures two paths of STS for a power module according to a 1:1 ratio, when any one path of a two-path mains supply input is powered off, the two paths of STS can be automatically switched to the other path, and a small amount of redundancy configuration is performed on the power module, so that when a fault occurs in a single power module or a static transfer switch without backup configuration, normal power supply can be achieved, and the power module has high reliability.

Based on the above-mentioned power module that this application embodiment provided, this application embodiment still provides a complete machine cabinet equipment. The whole cabinet equipment is described in detail below with reference to the accompanying drawings.

Referring to the structural schematic diagram of the complete cabinet shown in fig. 4, the complete cabinet 40 includes the power module 41 and the load 42 as described above, where the power module 41 and the load 42 are disposed in a cabinet 43 of the complete cabinet 40, in a specific implementation, the power module 41 may be disposed at the bottom of the cabinet 43, the load 42 is disposed on the power module 41, and the power module 41 supplies power to the load 42 based on the dual-channel commercial power input.

In one example, the overall cabinet height may be 2000 millimeters (mm), i.e., 39OU, where OU is a common cabinet height unit, 1OU is approximately equal to 44mm, where 3OU of space may be used to place a power supply box, which may be formed by a stack of power supply modules as shown in fig. 2, and the remaining space in the overall cabinet may be used to place a load, as shown in fig. 5.

According to the scheme, the power supply module and the load are integrated in the cabinet, so that the hardware platform can be flexibly configured according to user requirements, the space utilization rate of the cabinet is improved, and the cost is reduced. Moreover, the whole cabinet transfers most of assembly work to a factory to be completed in advance, and the whole cabinet is directly deployed on site quickly, so that the delivery efficiency is greatly improved.

In the embodiment shown in fig. 4, the load may specifically be a server and a switch, for example, a 32OU server and a 4OU switch may be placed, and non-computer architecture modules such as a power supply, a switch, and the like and a computer architecture module such as a server are integrated into one cabinet, so that centralized power supply and heat dissipation are realized, power efficiency may be improved, and a power consumption level of the server may be reduced.

Further, in practical application, the entire cabinet 40 may further include a battery, for example, 3OU can be taken out from the 32OU server for placing the battery, so that when the two-way mains supply input is powered down, the battery can also be used for supplying power to the loads such as the server and the switch, and the power supply reliability is improved.

In consideration of maintenance requirements, the power modules 41 and the loads 42 may be connected to the cabinet 43 of the entire cabinet 40 through respective corresponding terminals, such as power terminals and load terminals, so that the power modules can be conveniently disassembled, and the power modules 41 or the loads 42 can be conveniently repaired or replaced when the respective power modules or loads fail.

Therefore, the embodiment of the application provides a whole cabinet, which integrates power modules and loads in one cabinet, each power module in the power modules is provided with a corresponding double-circuit static transfer switch, and the double-circuit static transfer switch can receive double-circuit commercial power input and switch to another circuit when any circuit in the double-circuit commercial power input is powered down, so that the influence of the power down on the normal operation of the loads is avoided. In addition, each power supply module receives double-circuit commercial power input instead of being connected with one of the double-circuit commercial power input through two power supply modules respectively, so that the power supply modules do not need to be completely backed up, only a small number of power supply modules need to be additionally configured in normal required quantity, power can be normally supplied when individual power supply modules fail, reliability is improved, the quantity of the power supply modules needing to be configured is reduced, cost is reduced, spaces are reserved for configuring computing nodes and the like in the whole cabinet, and power supply density is improved.

It should be noted that the above-described embodiments are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiments of the apparatus provided in the present application, the connection relationship between the modules indicates that there is a communication connection therebetween, and may be implemented as one or more communication buses or signal lines.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus necessary general-purpose hardware, and certainly can also be implemented by special-purpose hardware including special-purpose integrated circuits, special-purpose CPUs, special-purpose memories, special-purpose components and the like. Generally, functions performed by computer programs can be easily implemented by corresponding hardware, and specific hardware structures for implementing the same functions may be various, such as analog circuits, digital circuits, or dedicated circuits.

However, for the present application, the implementation of a software program is more preferable. Based on such understanding, the technical solutions of the present application may be substantially embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, an exercise device, or a network device) to execute the method according to the embodiments of the present application.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device.

The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, training device, or data center to another website site, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a training device, a data center, etc., that incorporates one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

1. A power module, comprising:

the static transfer switch comprises a plurality of power modules and two paths of static transfer switches which correspond to the power modules one to one;

the two-way static transfer switch is used for automatically switching the input to the other one of the two-way input when any one of the two-way input is in power failure;

each power module in the plurality of power modules comprises a first end and a second end, the first end is used for being connected with the corresponding two-way static transfer switch, and the second end is used for being connected with a load so as to supply power to the load;

the number of the power supply modules is at least 1 larger than the ratio of the required power of the load to the power of the single power supply module;

the two-way static transfer switch is used for connecting a first live wire, a second live wire, a first zero wire and a second zero wire;

the first live wire and the second live wire are connected to a first node, and the first node is connected with a first current transformer assembly to obtain a live wire output end of the double-path static transfer switch;

a first relay, a second current transformer assembly and a first parallel circuit are connected in series between the input end of the first live wire and the first node, and the first parallel circuit comprises a first silicon controlled assembly, a second silicon controlled assembly and a fifth relay which are connected in parallel;

a third relay, a third current transformer assembly and a second parallel circuit are connected in series between the input end of the second live wire and the first node, and the second parallel circuit comprises a fifth silicon controlled assembly, a sixth silicon controlled assembly and a seventh relay which are connected in parallel;

the first zero line and the second zero line are connected to a second node, and the second node is a zero line output end of the two-way static transfer switch;

a second relay and a third parallel circuit are connected in series between the input end of the first zero line and the second node, and the third parallel circuit comprises a third silicon controlled assembly, a fourth silicon controlled assembly and a sixth relay which are connected in parallel;

a fourth relay and a fourth parallel circuit are connected in series between the input end of the second zero line and the second node, and the fourth parallel circuit comprises a seventh silicon controlled assembly, an eighth silicon controlled assembly and an eighth relay which are connected in parallel;

when the first live wire, the second live wire, the first zero wire and the second zero wire are electrified, the first relay, the second relay, the third relay, the fourth relay, the fifth relay and the sixth relay are closed, and the seventh relay and the eighth relay are disconnected; when the first live wire and the first zero wire are powered off, the first relay, the second relay, the fifth relay and the sixth relay are disconnected, and the seventh relay and the eighth relay are closed; before the seventh relay and the eighth relay are closed, the fifth silicon controlled component, the sixth silicon controlled component, the seventh silicon controlled component and the eighth silicon controlled component are closed first, so that the switching speed of the two-way static transfer switch is increased.

2. The power module as claimed in claim 1, wherein the power module further comprises a switch slot;

the two-way static transfer switch is inserted into the power module through the switch slot.

3. The power module as claimed in claim 1, wherein the two-way static transfer switch comprises:

and the two-way static change-over switch is integrated on the power module.

4. The power module as recited in claim 1, wherein a switching time of the two-way static transfer switch is less than a maximum power-down time supported by the power module.

5. The power module as claimed in any one of claims 1 to 4, wherein the two-way input comprises:

double-path alternating current input; alternatively, the first and second electrodes may be,

the hybrid double-path input of alternating current and high-voltage direct current;

or, two-way high-voltage direct current input.

6. A complete machine cabinet is characterized by comprising:

the power module and load of any of claims 1-5;

the power supply module and the load are arranged in the cabinet body of the whole cabinet;

the power module is used for supplying power to the load based on double-path input.

7. The complete cabinet according to claim 6, wherein the load comprises a server and a switch.

8. The complete machine cabinet according to claim 6, further comprising:

and the battery is used for supplying power to the load when the two-way input power failure occurs.

9. The complete machine cabinet according to any one of claims 6 to 8, wherein the power supply module and the load are connected to the cabinet body of the complete machine cabinet through respective corresponding terminals.