Modular server power supply system suitable for N+1 power supply

Abstract

The utility model provides a modularized server power supply system suitable for N + 1 power supply, which belongs to the technical field of server power supply design and comprises a power supply board and a power supply casing. A current-sharing bus and a plurality of power supply units are arranged on the power supply board; the input end of each power supply unit is connected with an external alternating current interface, and the output end of each power supply unit is connected with the current sharing bus; each power supply unit comprises a plurality of functional modules and a plurality of functional interfaces; the functional interface is arranged on the power panel, and the functional module is plugged with the functional interface; and the power supply shell is arranged outside the power supply board and each power supply unit. According to the utility model, all the power supply units are integrated on one power supply board, and the housing is packaged uniformly, so that the cost is reduced, the occupied space is reduced, and the power density is improved; a plurality of functional modules are designed for each power supply unit and can be detachably plugged, so that the flexible combination of the functional modules is realized, and the use cost is reduced; and a group of standby power supply units are added, so that the operation stability of the server power supply system is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of server power supply design, and specifically relates to a modular server power supply system suitable for N+1 power supply. Background Art

[0002] With the development of Internet technology, the demand for server systems is increasing. Server power supplies, as power supply equipment inside servers, are an important part of server systems. At present, server systems are usually required to support N+1 power supply architecture, that is, the server power supply is required to support two or more servers in parallel for power supply. This design can ensure that when a server power supply has a problem, other server power supplies can continue to power the server, thereby ensuring the stability of the server system operation. In the current traditional server power supply design, each power supply is an independent power module, and each power module is packaged in an independent housing. In this way, in a server system with N+1 power supply requirements, N+1 server power modules will be inserted.

[0003] In traditional server power supply design, multiple housings are required, which not only increases the material cost, but also takes up a certain amount of space and reduces the power density of the server design. In addition, once a power supply has a problem, the entire power module needs to be removed. However, if the output power required by the server is greater than the rated power of N power modules, the server system will not be able to maintain normal operation, reducing the stability of the server system.

[0004] Therefore, in view of the above defects, it is very necessary to provide a modular server power supply system suitable for N+1 power supply. Summary of the invention

[0005] In view of the defects that the server power module design method of the above-mentioned multiple casings increases material costs and reduces the power density of the server, and the design of the power module granularity will reduce the stability of the server system when a single power module fails, the utility model provides a modular server power system suitable for N+1 power supply to solve the above-mentioned technical problems.

[0006] The utility model provides a modular server power supply system suitable for N+1 power supply, including a power supply board and a power supply casing;

[0007] The power board is provided with a current-sharing bus and a number of power supply units;

[0008] The input end of each power supply unit is connected to the external AC power interface, and the output end of each power supply unit is connected to the current sharing bus;

[0009] Each power supply unit includes several functional modules and several functional interfaces;

[0010] The function interface is arranged on the power board, and the function module is plugged into the function interface;

[0011] The power supply housing is arranged outside the power supply board and each power supply unit.

[0012] Further, each power supply unit includes three functional modules and three functional interfaces;

[0013] The three functional modules are EMI module, PFC module and DC-DC module;

[0014] The three functional interfaces are a first functional interface, a second functional interface and a third functional interface;

[0015] Each functional interface includes input lines, output lines and module terminals;

[0016] The EMI module is plugged into the module terminal of the first functional interface, the PFC module is plugged into the module terminal of the second functional interface, and the DC-DC module is plugged into the module terminal of the third functional interface;

[0017] The input line of the first functional interface is connected to the external AC power interface, the output line of the first functional interface is connected to the input line of the second functional interface, the output line of the second functional interface is connected to the input line of the third functional interface, and the output line of the third functional interface is connected to the current sharing bus.

[0018] Further, the input line of each functional interface is connected to an input terminal, and the output line of each functional interface is connected to an output terminal;

[0019] The input line of the first functional interface is connected to the first input terminal, and the output line of the first functional interface is connected to the first output terminal;

[0020] The input line of the second functional interface is connected to the second input terminal, and the output line of the second functional interface is connected to the second output terminal;

[0021] The input line of the third functional interface is connected to the third input terminal, and the output line of the third functional interface is connected to the third output terminal.

[0022] Further, the power board is provided with an upper side, a lower side, an input side and an output side;

[0023] The power board is evenly divided into several power areas from the top to the bottom;

[0024] Each power zone corresponds to a power unit;

[0025] The current-sharing bus is set on the output side;

[0026] Each power supply area is divided into three power supply sub-areas in the longitudinal direction, which are the first power supply sub-area, the second power supply sub-area and the third power supply sub-area from the input side to the output side of the power supply board;

[0027] The first power sub-area is provided with a first functional interface, a first input terminal and a first output terminal of a corresponding power supply unit;

[0028] The second power sub-area is provided with a second functional interface, a second input terminal and a second output terminal of the corresponding power supply unit;

[0029] The third power sub-area is provided with a third functional interface, a third input terminal and a third output terminal of the corresponding power supply unit.

[0030] Furthermore, the number of the power supply units and the power supply areas is N+2;

[0031] From the upper side to the lower side of the power board, there are the first power supply unit, the second power supply unit, ... the N+1th power supply unit, and the N+2th power supply unit;

[0032] The first input terminals of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected to the external AC power interface via a flat cable;

[0033] The first output terminal and the second input terminal of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected via a flat cable;

[0034] The second output terminals and the third input terminals of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected via a flat cable;

[0035] The third output terminals of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected to the current sharing busbar through a wiring harness;

[0036] The N+2th power supply unit is a backup power supply unit.

[0037] Furthermore, the current-sharing bus includes a trunk bus and N+2 branch lines;

[0038] The main busbar is arranged at the edge of the output side of the power board and is parallel to the output side of the power board;

[0039] The width of the main bus is greater than the set width;

[0040] N+2 branch lines are vertically connected to the main bus and are evenly arranged on one side of the main bus facing away from the output side of the power board;

[0041] A busbar branch terminal is provided at the end of each branch line;

[0042] The third output terminals of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are connected to a corresponding bus branch terminal of the current-sharing bus through a wiring harness.

[0043] Furthermore, the current sharing bus is connected to a server power system.

[0044] Furthermore, a power supply terminal is connected to one side of the main busbar facing the output side of the power board;

[0045] The power supply terminal is connected to the server power system.

[0046] Further, each power supply unit also includes an auxiliary power supply module and a fourth functional interface;

[0047] The fourth functional interface also includes input lines, output lines and module terminals;

[0048] The auxiliary power supply module is plugged into the module terminal of the fourth functional interface, the input line of the fourth functional interface is connected to the output line of the third functional interface, and the output line of the fourth functional interface is connected to the current sharing bus;

[0049] The input line of the fourth functional interface is connected to the fourth input terminal, and the output line of the fourth functional interface is connected to the fourth output terminal.

[0050] Further, each power supply region also includes a fourth power supply sub-region;

[0051] The fourth power sub-region is arranged below the second power sub-region and the third power sub-region;

[0052] The fourth power sub-area is provided with a fourth functional interface, a fourth input terminal and a fourth output terminal of the corresponding power supply unit.

[0053] The beneficial effects of the utility model are:

[0054] The modular server power supply system suitable for N+1 power supply provided by the utility model integrates all power supply units into a power supply board, uniformly packages the power supply casing, reduces the cost of the structural material casing, reduces the occupied space, and improves the power density; the EMI module, PFC module and DC-DC module of each power supply unit are modularly designed and detachably plugged in, thereby realizing a flexible combination of functional modules of different power supply units. When a functional module has an irreparable problem, this part of the functional module can be replaced separately without replacing the whole machine, which greatly reduces the use cost; adding a group of spare power supply units can solve the problem that when the server power supply exceeds the rated power of N power supply units, when a fault occurs, the spare power supply unit can be enabled, thereby improving the stability of the server power supply system operation.

[0055] In addition, the design principle of the utility model is reliable, the structure is simple, and it has a very wide application prospect. It can be seen that compared with the prior art, the utility model has substantial characteristics and progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0057] Figure 1 It is a schematic diagram of Example 1 of the modular server power supply system suitable for N+1 power supply of the utility model.

[0058] Figure 2 It is a schematic diagram of Embodiment 2 of the modular server power supply system applicable to N+1 power supply of the utility model. Figure 3 This is a wiring connection diagram of Example 2 of the modular server power supply system suitable for N+1 power supply of the utility model.

[0059] Figure 4 It is a schematic diagram of Embodiment 3 of the modular server power supply system applicable to N+1 power supply of the utility model. Figure 5 This is a wiring connection diagram of Example 3 of the modular server power supply system suitable for N+1 power supply of the utility model.

[0060] Description of main reference numerals

[0061] 1. Power board, 2. Current sharing bus, 3. Power supply unit, 3.1. First function interface, 3.2. Second function interface, 3.3. Third function interface, 3.4. Fourth function interface, 4. External AC power interface, 5. Server power system. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0063] Embodiment 1:

[0064] See also Figure 1 Shown is a modular server power supply system suitable for N+1 power supply in a specific implementation, including a power supply board 1 and a power supply housing;

[0065] The power board 1 is provided with a current sharing bus 2 and a plurality of power supply units 3;

[0066] The input end of each power supply unit 3 is connected to the external AC interface 4, and the output end of each power supply unit 3 is connected to the current sharing bus 2;

[0067] Each power supply unit 3 includes several functional modules and several functional interfaces;

[0068] The functional interface is arranged on the power board 1, and the functional module is plugged into the functional interface;

[0069] The power supply housing is arranged outside the power supply board 1 and each power supply unit 3 .

[0070] Embodiment 2:

[0071] Based on Example 1, in certain embodiments, Figure 2 As shown, each power supply unit 3 includes three functional modules and three functional interfaces;

[0072] The three functional modules are EMI module, PFC module and DC-DC module;

[0073] The three functional interfaces are a first functional interface 3.1, a second functional interface 3.2 and a third functional interface 3.3;

[0074] Each functional interface includes input lines, output lines and module terminals;

[0075] The EMI module is plugged into the module terminal of the first functional interface 3.1, the PFC module is plugged into the module terminal of the second functional interface 3.2, and the DC-DC module is plugged into the module terminal of the third functional interface 3.3;

[0076] The input line of the first functional interface 3.1 is connected to the external AC interface 4, the output line of the first functional interface 3.1 is connected to the input line of the second functional interface 3.2, the output line of the second functional interface 3.2 is connected to the input line of the third functional interface 3.3, and the output line of the third functional interface 3.3 is connected to the current sharing bus 2;

[0077] The input line of each functional interface is connected to an input terminal, and the output line of each functional interface is connected to an output terminal;

[0078] The input line of the first functional interface 3.1 is connected to the first input terminal, and the output line of the first functional interface 3.1 is connected to the first output terminal;

[0079] The input line of the second functional interface 3.2 is connected to the second input terminal, and the output line of the second functional interface 3.2 is connected to the second output terminal;

[0080] The input line of the third functional interface 3.3 is connected to the third input terminal, and the output line of the third functional interface 3.3 is connected to the third output terminal;

[0081] The power board 1 is provided with an upper side, a lower side, an input side and an output side;

[0082] The power board 1 is evenly divided into several power areas from the upper side to the lower side;

[0083] Each power zone corresponds to a power unit;

[0084] The current sharing bus 2 is arranged at the output side;

[0085] Each power supply area is divided into three power supply sub-areas in the longitudinal direction, which are the first power supply sub-area, the second power supply sub-area and the third power supply sub-area from the input side to the output side of the power supply board;

[0086] The first power sub-area is provided with a first functional interface 3.1, a first input terminal and a first output terminal of a corresponding power supply unit;

[0087] The second power sub-area is provided with a second functional interface 3.2, a second input terminal and a second output terminal of the corresponding power supply unit;

[0088] The third power sub-area is provided with a third functional interface 3.3, a third input terminal and a third output terminal of the corresponding power supply unit;

[0089] The number of the power supply units and power supply areas is N+2; N is the number of power supply units required, and the extra power supply unit is a spare;

[0090] From the upper side to the lower side of the power board, there are the first power supply unit, the second power supply unit, ... the N+1th power supply unit, and the N+2th power supply unit;

[0091] like Figure 3 As shown, the first input terminals of the first power supply unit, the second power supply unit ... the N+1th power supply unit are all connected to the external AC power interface 4 through a flat cable;

[0092] The first output terminal and the second input terminal of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected via a flat cable;

[0093] The second output terminals and the third input terminals of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected via a flat cable;

[0094] The third output terminals of the first power supply unit, the second power supply unit ... the N+1th power supply unit are all connected to the current sharing bus 2 through a wiring harness;

[0095] The N+2 power supply unit is a backup power supply unit; the backup power supply unit is not used temporarily, so the first input terminal of the N+1 power supply unit is not connected to the external AC interface 4 temporarily, the first output terminal of the N+1 power supply unit is not connected to the second input terminal temporarily, the second output terminal of the N+1 power supply unit is not connected to the third input terminal temporarily, and the third output terminal of the N+1 power supply unit is not connected to the AC bus temporarily;

[0096] The current-sharing bus 2 includes a trunk bus and N+2 branch lines;

[0097] The main busbar is arranged at the output side edge of the power board 1 and is parallel to the output side of the power board 1;

[0098] The width of the main bus is greater than the set width;

[0099] N+2 branch lines are vertically connected to the main bus and are evenly arranged on one side of the main bus facing away from the output side of the power board 1;

[0100] A busbar branch terminal is provided at the end of each branch line;

[0101] The third output terminals of the first power supply unit, the second power supply unit ... the N+1th power supply unit are connected to a corresponding bus branch terminal of the current sharing bus 2 through a wiring harness;

[0102] The current sharing bus 2 is connected to a server power system 5;

[0103] A power supply terminal is connected to one side of the main busbar facing the output side of the power board 1;

[0104] The power supply terminal is connected to the server power system 5 .

[0105] Based on Example 2, the rated power of each power supply unit is 800W, and a 1+1 power supply system design is taken as an example. Three power supply units are designed, the first power supply unit and the second power supply unit are used for power supply, and the third power supply unit is a standby;

[0106] Under normal circumstances, the EMI module, PFC module and DC-DC module of the third power supply unit are not working; in each power supply unit, the EMI module, PFC module and DC-DC module are independent functional modules, which can be plugged in and out of the power board through the functional interface as a connector;

[0107] If the PFC module of the second power supply unit fails and the power of the server power system is greater than 1600W at that time, the PFC module in the third power supply will be started to continue to work with the EMI module and DC-DC module of the second power supply unit to ensure the stable operation of the server power system; at the same time, the failure of the PFC module of the second power supply unit will be reported to the system, which is convenient for maintenance personnel to quickly locate the problem and perform replacement / maintenance;

[0108] The wiring connection method can facilitate the replacement of functional modules between different power supply units;

[0109] All modules of the three power supply units are concentrated on a power supply board 1 and are uniformly packaged in a power supply casing. Compared with installing a power supply casing on three separate power supply units, the cost of structural materials can be reduced.

[0110] Embodiment 3:

[0111] Based on Example 1, in certain embodiments, Figure 4 As shown, each power supply unit 3 includes four functional modules and four functional interfaces;

[0112] The four functional modules are EMI module, PFC module, DC-DC module and auxiliary power supply module;

[0113] The four functional interfaces are a first functional interface 3.1, a second functional interface 3.2, a third functional interface 3.3 and a fourth functional interface 3.4;

[0114] Each functional interface includes input lines, output lines and module terminals;

[0115] The EMI module is plugged into the module terminal of the first functional interface 3.1, the PFC module is plugged into the module terminal of the second functional interface 3.2, the DC-DC module is plugged into the module terminal of the third functional interface 3.3, and the auxiliary power supply module is plugged into the module terminal of the fourth functional interface 3.4;

[0116] The input line of the first functional interface 3.1 is connected to the external AC interface 4, the output line of the first functional interface 3.1 is connected to the input line of the second functional interface 3.2, the output line of the second functional interface 3.2 is connected to the input line of the third functional interface 3.3, and the output line of the third functional interface 3.3 is connected to the current sharing bus 2;

[0117] The input line of each functional interface is connected to an input terminal, and the output line of each functional interface is connected to an output terminal;

[0118] The input line of the first functional interface 3.1 is connected to the first input terminal, and the output line of the first functional interface 3.1 is connected to the first output terminal;

[0119] The input line of the second functional interface 3.2 is connected to the second input terminal, and the output line of the second functional interface 3.2 is connected to the second output terminal;

[0120] The input line of the third functional interface 3.3 is connected to the third input terminal, and the output line of the third functional interface 3.3 is connected to the third output terminal;

[0121] The input line of the fourth functional interface 3.4 is connected to the fourth input terminal, and the output line of the fourth functional interface 3.4 is connected to the fourth output terminal;

[0122] The power board 1 is provided with an upper side, a lower side, an input side and an output side;

[0123] The power board 1 is evenly divided into several power areas from the upper side to the lower side;

[0124] Each power zone corresponds to a power unit;

[0125] The current sharing bus 2 is arranged at the output side;

[0126] Each power supply area is divided into three power supply sub-areas in the longitudinal direction, which are the first power supply sub-area, the second power supply sub-area and the third power supply sub-area from the input side to the output side of the power supply board;

[0127] A fourth power sub-region is arranged below the second power sub-region and the third power sub-region;

[0128] The first power sub-area is provided with a first functional interface 3.1, a first input terminal and a first output terminal of a corresponding power supply unit;

[0129] The second power sub-area is provided with a second functional interface 3.2, a second input terminal and a second output terminal of the corresponding power supply unit;

[0130] The third power sub-area is provided with a third functional interface 3.3, a third input terminal and a third output terminal of the corresponding power supply unit;

[0131] The fourth power sub-area is provided with a fourth functional interface 3.4, a fourth input terminal and a fourth output terminal of the corresponding power supply unit;

[0132] The number of the power supply units and power supply areas is N+2; N+1 is the number of required power supply units, and the extra power supply unit is a backup;

[0133] From the upper side to the lower side of the power board, there are the first power supply unit, the second power supply unit, ... the N+1th power supply unit, and the N+2th power supply unit;

[0134] like Figure 5As shown, the first input terminals of the first power supply unit, the second power supply unit ... the N+1th power supply unit are all connected to the external AC power interface 4 through a flat cable;

[0135] The first output terminal and the second input terminal of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected via a flat cable;

[0136] The second output terminals and the third input terminals of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected via a flat cable;

[0137] The third output terminal and the fourth input terminal of the first power supply unit, the second power supply unit ... the N+1th power supply unit are all connected via a flat cable;

[0138] The fourth output terminals of the first power supply unit, the second power supply unit ... the N+1th power supply unit are all connected to the current sharing bus 2 through a wiring harness;

[0139] The N+2 power supply unit is a backup power supply unit; the backup power supply unit is not used temporarily, so the first input terminal of the N+1 power supply unit is not connected to the external AC interface 4 temporarily, the first output terminal of the N+1 power supply unit is not connected to the second input terminal temporarily, the second output terminal of the N+1 power supply unit is not connected to the third input terminal temporarily, the third output terminal of the N+1 power supply unit is not connected to the fourth input terminal temporarily, and the fourth output terminal of the N+1 power supply unit is not connected to the AC bus temporarily;

[0140] The current-sharing bus 2 includes a trunk bus and N+2 branch lines;

[0141] The main busbar is arranged at the output side edge of the power board 1 and is parallel to the output side of the power board 1;

[0142] The width of the main bus is greater than the set width;

[0143] N+2 branch lines are vertically connected to the main bus and are evenly arranged on one side of the main bus facing away from the output side of the power board 1;

[0144] A busbar branch terminal is provided at the end of each branch line;

[0145] The fourth output terminals of the first power supply unit, the second power supply unit ... the N+1th power supply unit are connected to a corresponding bus branch terminal of the current sharing bus 2 through a wiring harness;

[0146] The current sharing bus 2 is connected to a server power system 5;

[0147] A power supply terminal is connected to one side of the main busbar facing the output side of the power board 1;

[0148] The power supply terminal is connected to the server power system 5 .

[0149] Although the present invention is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person skilled in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person skilled in the art who is familiar with the present technical field may easily think of changes or substitutions within the technical scope disclosed in the present invention, and these shall be within the scope of protection of the present invention.

Claims

1. A modular server power supply system suitable for N+1 power supply, characterized in that: Including a power board and a power housing; The power board is provided with a current-sharing bus and a number of power supply units; The input end of each power supply unit is connected to the external AC power interface, and the output end of each power supply unit is connected to the current sharing bus; Each power supply unit includes several functional modules and several functional interfaces; The function interface is arranged on the power board, and the function module is plugged into the function interface; The power supply housing is arranged outside the power supply board and each power supply unit.

2. The modular server power supply system suitable for N+1 power supply according to claim 1, characterized in that: Each power supply unit includes three functional modules and three functional interfaces; The three functional modules are EMI module, PFC module and DC-DC module; The three functional interfaces are a first functional interface, a second functional interface and a third functional interface; Each functional interface includes input lines, output lines and module terminals; The EMI module is plugged into the module terminal of the first functional interface, the PFC module is plugged into the module terminal of the second functional interface, and the DC-DC module is plugged into the module terminal of the third functional interface; The input line of the first functional interface is connected to the external AC power interface, the output line of the first functional interface is connected to the input line of the second functional interface, the output line of the second functional interface is connected to the input line of the third functional interface, and the output line of the third functional interface is connected to the current sharing bus.

3. The modular server power supply system suitable for N+1 power supply according to claim 2, characterized in that: The input line of each functional interface is connected to an input terminal, and the output line of each functional interface is connected to an output terminal; The input line of the first functional interface is connected to the first input terminal, and the output line of the first functional interface is connected to the first output terminal; The input line of the second functional interface is connected to the second input terminal, and the output line of the second functional interface is connected to the second output terminal; The input line of the third functional interface is connected to the third input terminal, and the output line of the third functional interface is connected to the third output terminal.

4. The modular server power supply system suitable for N+1 power supply according to claim 3, characterized in that: The power board is provided with an upper side, a lower side, an input side and an output side; The power board is evenly divided into several power areas from the top to the bottom; Each power zone corresponds to a power unit; The current-sharing bus is set on the output side; Each power supply area is divided into three power supply sub-areas in the longitudinal direction, which are the first power supply sub-area, the second power supply sub-area and the third power supply sub-area from the input side to the output side of the power supply board; The first power sub-area is provided with a first functional interface, a first input terminal and a first output terminal of a corresponding power supply unit; The second power sub-area is provided with a second functional interface, a second input terminal and a second output terminal of the corresponding power supply unit; The third power sub-area is provided with a third functional interface, a third input terminal and a third output terminal of the corresponding power supply unit.

5. The modular server power supply system suitable for N+1 power supply according to claim 4, characterized in that: The number of the power supply units and power supply areas is N+2; From the upper side to the lower side of the power board, there are the first power supply unit, the second power supply unit, ... the N+1th power supply unit, and the N+2th power supply unit; The first input terminals of the first power supply unit, the second power supply unit, ... the Nth power supply unit are all connected to the external AC power interface via a flat cable; The first output terminal and the second input terminal of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected via a flat cable; The second output terminals and the third input terminals of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected via a flat cable; The third output terminals of the first power supply unit, the second power supply unit, ... the N+1th power supply unit are all connected to the current sharing busbar through a wiring harness; The N+2th power supply unit is a backup power supply unit.

6. The modular server power supply system suitable for N+1 power supply according to claim 5, characterized in that: The current-sharing busbar includes the main busbar and N+2 branch lines; The main busbar is arranged at the edge of the output side of the power board and is parallel to the output side of the power board; The width of the main bus is greater than the set width; N+2 branch lines are vertically connected to the main bus and are evenly arranged on one side of the main bus facing away from the output side of the power board; A busbar branch terminal is provided at the end of each branch line; The third output terminals of the first power supply unit, the second power supply unit, ... the Nth power supply unit are connected to a corresponding bus branch terminal of the current-sharing bus through a wiring harness.

7. The modular server power supply system suitable for N+1 power supply according to claim 6, characterized in that: The current-sharing bus is connected to the server power system.

8. The modular server power supply system suitable for N+1 power supply according to claim 7, characterized in that: A power supply terminal is connected to one side of the main busbar facing the output side of the power board; The power supply terminal is connected to the server power system.

9. The modular server power supply system suitable for N+1 power supply according to claim 4, characterized in that: Each power supply unit also includes an auxiliary power supply module and a fourth functional interface; The fourth functional interface also includes input lines, output lines and module terminals; The auxiliary power supply module is plugged into the module terminal of the fourth functional interface, the input line of the fourth functional interface is connected to the output line of the third functional interface, and the output line of the fourth functional interface is connected to the current sharing bus; The input line of the fourth functional interface is connected to the fourth input terminal, and the output line of the fourth functional interface is connected to the fourth output terminal.

10. The modular server power supply system suitable for N+1 power supply according to claim 9, characterized in that: Each power region also includes a fourth power sub-region; The fourth power sub-region is arranged below the second power sub-region and the third power sub-region; The fourth power sub-area is provided with a fourth functional interface, a fourth input terminal and a fourth output terminal of the corresponding power supply unit.

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