A large aircraft direct-current power supply redundancy intelligent power supply system and method

Abstract

The application provides a large aircraft DC power supply redundancy intelligent power supply system and method, and the intelligent power supply system comprises: an emergency power supply module (100), a main power supply module (200), a ground power supply module (300), an auxiliary power supply module (400), an intelligent power distribution cabinet module (500), avionics display (600), a control panel (700), an electrical display control box (800); the emergency power supply module (100), the main power supply module (200), the ground power supply module (300), the auxiliary power supply module (400), the avionics display (600), the control panel (700) and the electrical display control box (800) are connected with the intelligent power distribution cabinet module (500) respectively. The large aircraft DC power supply redundancy intelligent power supply system and method can realize intelligent control of network connection, network withdrawal and interlocking of multiple types of DC power supplies of a large aircraft, effectively simplify a hard-wired logic circuit, reduce the use of conventional contactors and relays, thereby effectively reducing the weight of a primary power distribution system, can collect all key parameters of a power supply system and display and store the key parameters, and effectively improve the state monitoring capability of the power supply system.

Description

Technical Field

[0001] This invention belongs to the field of power supply technology for aviation electromechanical systems, and relates to the grid connection, grid disconnection and interlocking management, as well as status acquisition and monitoring of DC power supplies for large aircraft. In particular, it provides an architecture and method for intelligent uninterrupted power supply of redundant DC power supplies for large aircraft. Background Technology

[0002] Traditional large aircraft DC power redundancy power supply systems are all implemented using conventional power distribution methods. Due to the complexity of the control logic, which is implemented using hard-wired logic circuits, the control circuits are heavy and cumbersome, with a large variety and number of components. This results in numerous fault points in the power distribution control system, making maintenance, fault analysis, and troubleshooting extremely difficult.

[0003] A certain type of large rescue / firefighting amphibious aircraft adopts a DC power redundancy intelligent power supply system, which can significantly reduce the complexity of the power distribution system control circuit, reduce the system weight, and monitor and record the system status in real time, making system fault analysis and troubleshooting work faster and more accurate. Summary of the Invention

[0004] The purpose of this invention:

[0005] To overcome the shortcomings of existing redundant DC power supply systems, this invention proposes a redundant intelligent DC power supply system and method for large aircraft. This system can significantly reduce the complexity of the power distribution system control circuit, reduce system weight, and monitor and record system status in real time, making system fault analysis and troubleshooting faster and more accurate.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] To achieve the above objectives, according to a first aspect of the present invention, a large aircraft DC power redundancy intelligent power supply system is provided, characterized in that it includes an emergency power supply module 100, a main power supply module 200, a ground power supply module 300, an auxiliary power supply module 400, an intelligent power distribution cabinet module 500, an avionics display 600, a control panel 700, and an electrical display and control box 800.

[0008] The emergency power module 100 is used to provide emergency power to the aircraft to ensure that ground inspection work can be carried out normally or to provide emergency power for the aircraft to safely return after the mission is terminated during the execution of the mission.

[0009] The main power module 200 is used to provide DC power for the entire aircraft when the large aircraft is performing normal missions.

[0010] The ground power module 300 is used to provide DC power for the entire aircraft during ground maintenance or inspection, and to provide power for engine starting.

[0011] The auxiliary power module 400 is used to provide auxiliary power to the aircraft when the main power module cannot meet the onboard power requirements, and to start the engine in extreme cases.

[0012] The intelligent power distribution cabinet module 500 is used for automated uninterrupted switching power supply control, power distribution protection, and status acquisition and monitoring of various DC power supplies for large aircraft, including grid connection, grid disconnection and interlocking.

[0013] The avionics display 600 is used to display key parameters of various DC power supplies;

[0014] The control panel 700 is used to operate the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch. It communicates with the electrical display and control box 800 and sends the status signals of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch to the electrical display and control box 800.

[0015] The electrical display and control box 800 is used to collect the switch status on the control panel 700 and send it to the intelligent power distribution cabinet module 500, and at the same time record the key parameters of various DC power supplies transmitted by the intelligent power distribution cabinet module 500.

[0016] The emergency power supply module 100, main power supply module 200, ground power supply module 300, auxiliary power supply module 400, avionics display 600, control panel 700, and electrical display and control box 800 are respectively connected to the intelligent power distribution cabinet module 500.

[0017] In one possible embodiment, the emergency power module 100 includes multiple sets of emergency batteries 110 and a corresponding number of multiple emergency battery chargers 120;

[0018] The emergency battery 110 is electrically connected to the emergency battery charger 120; the emergency battery 110 is connected to the emergency busbar via an emergency transfer contactor;

[0019] The emergency battery charger 120 is connected to the central busbar and the busbar power controller.

[0020] In one possible embodiment, the main power module 200 includes multiple DC generators 210 and a corresponding number of multiple DC generator control boxes 220;

[0021] The DC generator 210 is connected to the central busbar via a DC generator contactor;

[0022] The DC generator control box 220 is connected to the DC generator contactor; the DC generator control box 220 is connected to the busbar power controller.

[0023] In one possible embodiment, the intelligent power distribution cabinet module 500 includes a left intelligent power distribution cabinet 510 and a right intelligent power distribution cabinet 520;

[0024] The left intelligent power distribution cabinet 510 includes a left central busbar 511, a left emergency busbar 512, a left busbar power controller 513, a ground power contactor 514, an auxiliary power contactor 515, a left DC generator contactor 516, a left emergency battery contactor 517, a central parallel contactor 518, and a left emergency transfer contactor 519.

[0025] The right intelligent power distribution cabinet 520 includes a right central busbar 521, a right emergency busbar 522, a right busbar power controller 523, a right DC generator contactor 524, a right emergency battery contactor 525, an emergency parallel contactor 526, and a right emergency transfer contactor 527.

[0026] The left central busbar 511 is connected to the main power module 200 via the left DC generator contactor 516, to the left emergency busbar 512 via the left emergency conversion contactor 519, to the ground power module 300 via the ground power contactor 514, to the auxiliary power module 400 via the auxiliary power contactor 515, and to the right central busbar 521 via the central parallel contactor 518.

[0027] The left emergency busbar 512 is connected to the emergency power module 100 via the left emergency battery contactor 517;

[0028] The left busbar power controller 513 is connected to the ground power contactor 514 to collect the status of the ground power contactor 514 and control the engagement and disengagement of the ground power contactor 514, thereby realizing the grid connection and disconnection of the ground power.

[0029] The left busbar power controller 513 is connected to the auxiliary power contactor 515 to collect the status of the auxiliary power contactor 515;

[0030] The left busbar power controller 513 is connected to the DC auxiliary generator control box 420, and the DC auxiliary generator control box 420 is connected to the auxiliary power contactor 515. This allows the left busbar power controller 513 to control the engagement and disengagement of the auxiliary power contactor 515 through the DC auxiliary generator control box 420, thereby controlling the grid connection or disconnection of the DC auxiliary generator 410.

[0031] The left busbar power controller 513 is connected to the left DC generator contactor 516 to collect the status of the left DC generator contactor 516;

[0032] The left busbar power controller 513 is connected to the DC generator control box 220, and the DC generator control box 220 is connected to the left DC generator contactor 516. This enables the left busbar power controller 513 to control the left DC generator contactor 516 to engage and disengage through the DC generator control box 220, thereby controlling the DC generator 210 to engage and disengage from the grid.

[0033] The left busbar power controller 513 is connected to the left emergency battery contactor 517 to collect the status of the left emergency battery contactor 517 and control the engagement and disengagement of the left emergency battery contactor 517, thereby realizing the grid connection and disconnection of the emergency battery 110.

[0034] The left busbar power controller 513 is connected to the emergency battery charger 120 to collect the charging status of the emergency battery charger 120 and control the connection and disconnection of the charging circuit of the emergency battery charger 120.

[0035] The left busbar power controller 513 is connected to the central parallel contactor 518 to collect the status of the central parallel contactor 518 and control the connection and disconnection of the central parallel contactor 518, thereby realizing the connection and disconnection of the left central busbar 511 and the right central busbar 521.

[0036] The left busbar power controller 513 is connected to the left emergency transfer contactor 519 to collect the status of the left emergency transfer contactor 519 and control the engagement and disengagement of the left emergency transfer contactor 519, thereby controlling the connection and disconnection of the left emergency busbar 512 and the left central busbar 511.

[0037] The right central busbar 521 is connected to the main power module 200 via the right DC generator contactor 524, to the right emergency busbar 522 via the right emergency conversion contactor 527, to the emergency power module 100 via the right emergency battery contactor 525, and to the left emergency busbar 512 via the emergency parallel contactor 526;

[0038] The right busbar power controller 523 is connected to the right DC generator contactor 524 to collect the status of the right DC generator contactor 524;

[0039] The right busbar power controller 523 is connected to the DC generator control box 220, and the DC generator control box 220 is connected to the right DC generator contactor 524. This enables the right busbar power controller 523 to control the engagement and disengagement of the right DC generator contactor 524 through the DC generator control box 220, thereby controlling the grid connection and disengagement of the DC generator 210.

[0040] The right busbar power controller 523 is connected to the right emergency battery contactor 525 to collect the status of the right emergency battery contactor 525 and control the connection and disconnection of the right emergency battery contactor 525, thereby realizing the control of the grid connection and disconnection of the emergency battery 110.

[0041] The right busbar power controller 523 is connected to the emergency battery charger 120 to collect the charging status of the emergency battery charger 120 and control the connection and disconnection of the charging circuit of the emergency battery charger 120.

[0042] The right busbar power controller 523 is connected to the emergency parallel contactor 526 to collect the status of the emergency parallel contactor 526 and control the connection and disconnection of the emergency parallel contactor 526, thereby realizing the connection and disconnection of the left emergency busbar 512 and the right emergency busbar 522.

[0043] The right busbar power controller 523 is connected to the right emergency transfer contactor 527 to collect the status of the right emergency transfer contactor 527 and control the engagement and disengagement of the right emergency transfer contactor 527, thereby controlling the connection and disconnection of the right emergency busbar 522 and the right central busbar 521.

[0044] In one possible embodiment, the auxiliary power module 400 includes a DC auxiliary generator 410 and a DC auxiliary generator control box 420; the DC auxiliary generator 410 is connected to the left central busbar 511 via the auxiliary power contactor 515; the DC auxiliary generator control box 420 is connected to the auxiliary power contactor 515; and the DC auxiliary generator control box 420 is connected to the left busbar power controller 513.

[0045] In one possible embodiment, the control panel 700 is connected to the electrical display and control box 800 and is used to send status signals of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch to the electrical display and control box 800.

[0046] In one possible embodiment, the electrical display and control box 800 is connected to the left busbar power controller 513 in the left intelligent distribution cabinet 510 and the right busbar power controller 523 in the right intelligent distribution cabinet 520, respectively. The electrical display and control box 800 sends signals from the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch to the busbar power controller, and simultaneously receives and stores various key DC power parameters sent by the busbar power controller.

[0047] In one possible embodiment, the avionics display 600 is connected to the left busbar power controller 513 in the left intelligent power distribution cabinet 510 and the right busbar power controller 523 in the right intelligent power distribution cabinet 520, respectively, for receiving and displaying various key DC power parameters sent by the busbar power controllers.

[0048] Optionally, the communication protocol between the intelligent power distribution cabinet module 500 and the electrical display and control box 800 is CAN communication, with a transmission rate of not less than 10Hz.

[0049] Optionally, the communication protocol between the intelligent power distribution cabinet module 500 and the avionics display 600 is 429 communication with a transmission rate of 1-2Hz.

[0050] Optionally, the communication protocol between the left intelligent power distribution cabinet module 510 and the right intelligent power distribution cabinet 520 is 422 communication, with a transmission rate of not less than 10Hz.

[0051] According to a second aspect of the present invention, a method for redundant intelligent power supply of DC power supply for large aircraft is provided. The method comprises the following steps:

[0052] S1: The electrical display and control box 800 collects the status of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch and emergency transfer switch on the control panel 700 and sends them to the left busbar power controller 513 and right busbar power controller 523 in the intelligent power distribution cabinet module 500 via bus;

[0053] S2: The left busbar power controller 513 and the right busbar power controller 523 control the relevant contactor actions according to the switch positions on the control panel 700, the current status of each contactor, and the relevant logic in the internal software, thereby realizing the grid connection and disconnection of the emergency battery 110, the DC generator 210, the ground power module 300, and the DC auxiliary generator 410 according to specific logic, and correspondingly control the connection or disconnection of the charging circuit of the emergency battery charger 120, control the connection or disconnection of the left central busbar 511 and the right central busbar 521, control the connection or disconnection of the left central busbar 511 and the left emergency busbar 512, and control the connection or disconnection of the right central busbar 521 and the right emergency busbar 522;

[0054] S3: The left busbar power controller 513 and the right busbar power controller 523 collect the grid connection or disconnection status of the emergency battery 110, the DC generator 210, the ground power module 300, and the DC auxiliary generator 410, collect the on / off status of the charging circuit of the emergency battery charger 120, and collect key parameters such as voltage and current of each DC power source.

[0055] S4: The left busbar power controller 513 and the right busbar power controller 523 send the collected parameters to the avionics display 600 so that the pilot can grasp the key parameters of the aircraft's emergency power system;

[0056] S5: The left busbar power controller 513 and the right busbar power controller 523 send the collected parameters to the electrical display and control box 800 for storage, providing key data support for ground maintenance and power system fault diagnosis.

[0057] In step S2, the logic for the left busbar power controller 513 and the right busbar power controller 523 to control the ground power module 300 to connect to the grid is as follows:

[0058] When the DC ground power switch is turned on, the ground power supply is activated, and the left busbar power controller 513 in the left intelligent power distribution cabinet module 510 controls the ground power contactor 514 to be turned on, thereby controlling the ground power module 300 to be connected to the grid.

[0059] The control logic of the left busbar power controller 513 and the right busbar power controller 523 for the interlocking power supply of the ground power module 300, the main power module 200, and the auxiliary power module 400 is as follows:

[0060] When the ground power module 300 is connected to the grid, the left busbar power controller 513 controls the auxiliary power contactor 515 to disconnect through the DC auxiliary generator control box 420, thereby controlling the DC auxiliary generator 410 to disconnect from the grid; the left busbar power controller 513 and the right busbar power controller 523 control the left DC generator contactor 516 and the right DC generator contactor 524 to disconnect through the DC generator control box 220, thereby controlling the DC generator 410 to disconnect from the grid;

[0061] The logic for controlling the main power module 200 to connect to the grid by the left busbar power controller 513 and the right busbar power controller 523 is as follows:

[0062] When the ground power switch is in the off position and the DC generator switch is in the on position, the left busbar power controller 513 and the right busbar power controller 523 control the left DC generator contactor 516 and the right DC generator contactor 524 to be connected through the DC generator control box 220, thereby controlling the DC generator 210 to be connected to the grid.

[0063] The logic of the left busbar power controller 513 controlling the auxiliary power module 400 to connect to the grid is as follows:

[0064] When the ground power switch is in the off position and the DC auxiliary generator switch is in the on position, the left busbar power controller 513 controls the auxiliary power contactor 515 to be turned on through the DC auxiliary generator control box 420, thereby controlling the DC auxiliary generator 410 to be connected to the grid.

[0065] The logic of the left busbar power controller 513 and the right busbar power controller 523 for controlling the emergency power module 100 to connect to the grid, disconnect from the grid, or charge is as follows:

[0066] When the emergency battery switch is in the off position, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to disconnect, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to disconnect, thereby controlling the emergency battery 110 to be in a disconnected and non-charging state;

[0067] When the emergency battery switch is in the ON position and the emergency transfer switch is in the ON position, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to be turned on, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be turned off, thereby controlling the emergency battery 110 to be in a grid-connected and non-charging state;

[0068] When the emergency battery switch is in the ON position, the emergency transfer switch is in the OFF position, and the ground power module 300 is in the grid-connected state, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to disconnect, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be connected, thereby controlling the emergency battery 110 to be in the grid-connected and charging state;

[0069] When the emergency battery switch is in the ON position, the emergency transfer switch is in the OFF position, and the ground power module 300 is in the off-grid state and the main power module 200 is in the grid-connected state, when the number of DC generators 210 connected to the grid is greater than 2, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to disconnect, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be connected, thereby controlling the emergency battery 110 to be in the off-grid and charging state;

[0070] When the emergency battery switch is in the ON position, the emergency transfer switch is in the OFF position, and the ground power module 300 is in the off-grid state and the main power module 200 is in the grid-connected state, and the number of DC generators 210 connected to the grid is no more than 2, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to be connected, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be disconnected, thereby controlling the emergency battery 110 to be in the grid-connected and non-charging state;

[0071] When the emergency battery switch is in the ON position, the emergency transfer switch is in the OFF position, and the ground power module 300 and the main power module 200 are in the OFF state, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to be turned on, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be turned off, thereby controlling the emergency battery 110 to be in the grid-connected and non-charging state;

[0072] The logic of the busbar power controller for controlling the connection or disconnection of the central busbar and emergency busbar is as follows:

[0073] When the emergency transfer switch is in the ON position, the left busbar power controller 513 controls the left emergency transfer contactor 519 to open, thereby controlling the left central busbar 511 and the left emergency busbar 512 to disconnect. The right busbar power controller 523 controls the right emergency transfer contactor 527 to open, thereby controlling the right central busbar 521 and the right emergency busbar 522 to disconnect. At this time, the emergency power module 100 supplies power to the onboard emergency load.

[0074] The logic of the left busbar power controller 513 controlling the connection or disconnection of the left central busbar 511 and the right central busbar 521 is as follows:

[0075] When the left and right parallel switches are in the ON position, the left busbar power controller 513 controls the parallel contactor 518 to be turned on, thereby controlling the left central busbar 511 and the right central busbar 521 to be turned on.

[0076] When the left and right parallel switches are in the open position, the left busbar power controller 513 controls the parallel contactor 518 to open, thereby controlling the left central busbar 511 and the right central busbar 521 to disconnect.

[0077] When the left and right parallel switches are in the neutral position, if the ground power module 300 is connected to the grid, the left busbar power controller 513 controls the parallel contactor 518 to be turned on, thereby controlling the left central busbar 511 and the right central busbar 521 to be turned on, so that the ground power module 300 can supply power to the whole machine.

[0078] When the left and right parallel switches are in the neutral position and the main power module 200 is connected to the grid, if the number of DC generators 210 connected to the grid is greater than 4, the left busbar power controller 513 controls the parallel contactor 518 to disconnect, thereby controlling the left central busbar 511 and the right central busbar 521 to disconnect.

[0079] When the left and right parallel switches are in the neutral position and the main power module 200 is connected to the grid, if the number of DC generators 210 connected to the grid is no more than 4, the left busbar power controller 513 controls the parallel contactor 518 to be turned on, thereby controlling the left central busbar 511 and the right central busbar 521 to be turned on, so as to realize the left and right parallel power supply of the main power module 200.

[0080] The logic of the right busbar power controller 523 controlling the connection or disconnection of the left emergency busbar 512 and the right emergency busbar 522 is as follows:

[0081] When the left busbar power controller 513 controls the left central busbar 511 and the right central busbar 521 to be connected, the right busbar power controller 523 controls the left emergency busbar 512 and the right emergency busbar 522 to be connected.

[0082] When the emergency transfer switch is in the ON position, the right busbar power controller 523 controls the emergency parallel contactor 526 to be turned on, thereby controlling the left emergency busbar 512 and the right emergency busbar 522 to be turned on.

[0083] The beneficial effects of this invention are:

[0084] This invention discloses a redundant intelligent power supply system and method for large aircraft DC power supplies, which can realize intelligent control of grid connection, grid disconnection, and interlocking of various types of DC power supplies for large aircraft. It effectively simplifies hard-wired logic circuits, reduces the use of conventional contactors and relays, thereby effectively reducing the weight of the primary power distribution system, reducing fault points, and improving system reliability. It can collect, display, and store all key parameters of the power system, effectively improving the power system status monitoring capability, and making system fault analysis and troubleshooting faster and more accurate. Attached image description:

[0085] Figure 1 This is an architectural diagram of a redundancy intelligent power supply system for large aircraft DC power supplies according to the present invention.

[0086] Figure 2 This is a flowchart of the working method of the present invention.

[0087] The modules are as follows: 100 - Emergency Power Supply Module; 200 - Main Power Supply Module; 300 - Ground Power Supply Module; 400 - Auxiliary Power Supply Module; 500 - Intelligent Power Distribution Cabinet Module; 600 - Avionics Display; 700 - Control Panel; 800 - Electrical Display and Control Box; 110 - Emergency Battery; 120 - Emergency Battery Charger; 210 - DC Generator; 220 - DC Generator Controller; 410 - DC Auxiliary Generator; 420 - DC Auxiliary Generator; 510 - Left Intelligent Power Distribution Cabinet; 520 - Right Intelligent Power Distribution Cabinet; 511 - Left Central Busbar. 512-Left emergency busbar; 513-Left busbar power controller; 514-Ground power contactor; 515-Auxiliary power contactor; 516-Left DC generator contactor; 517-Left emergency battery contactor; 518-Parallel contactor; 519-Left emergency transfer contactor; 521-Right left-right busbar; 522-Right emergency busbar; 523-Right busbar power controller; 524-Right DC generator contactor; 525-Right emergency battery contactor; 526-Emergency parallel contactor; 527-Right emergency transfer contactor. Detailed implementation method:

[0088] The calculation methods in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of the present invention.

[0089] See appendix Figure 1 A large aircraft DC power redundancy intelligent power supply system is provided, characterized in that it includes an emergency power supply module 100, a main power supply module 200, a ground power supply module 300, an auxiliary power supply module 400, an intelligent power distribution cabinet module 500, an avionics display 600, a control panel 700, and an electrical display and control box 800.

[0090] The emergency power module 100 is used to provide emergency power to the aircraft to ensure that ground inspection work can be carried out normally or to provide emergency power for the aircraft to safely return after the mission is terminated during the execution of the mission.

[0091] The main power module 200 is used to provide DC power for the entire aircraft when the large aircraft is performing normal missions.

[0092] The ground power module 300 is used to provide DC power for the entire aircraft during ground maintenance or inspection, and to provide power for engine starting.

[0093] The auxiliary power module 400 is used to provide auxiliary power to the aircraft when the main power module cannot meet the onboard power requirements, and to start the engine in extreme cases.

[0094] The intelligent power distribution cabinet module 500 is used for automated uninterrupted switching power supply control, power distribution protection, and status acquisition and monitoring of various DC power supplies for large aircraft, including grid connection, grid disconnection and interlocking.

[0095] The avionics display 600 is used to display key parameters of various DC power supplies;

[0096] The control panel 700 is used to operate the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch. It communicates with the electrical display and control box 800 and sends the status signals of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch to the electrical display and control box 800.

[0097] The electrical display and control box 800 is used to collect the switch status on the control panel 700 and send it to the intelligent power distribution cabinet module 500, and at the same time record the key parameters of various DC power supplies transmitted by the intelligent power distribution cabinet module 500.

[0098] The emergency power supply module 100, main power supply module 200, ground power supply module 300, auxiliary power supply module 400, avionics display 600, control panel 700, and electrical display and control box 800 are respectively connected to the intelligent power distribution cabinet module 500.

[0099] In one possible embodiment, the emergency power module 100 includes multiple sets of emergency batteries 110 and a corresponding number of multiple emergency battery chargers 120;

[0100] The emergency battery 110 is electrically connected to the emergency battery charger 120; the emergency battery 110 is connected to the emergency busbar via an emergency transfer contactor;

[0101] The emergency battery charger 120 is connected to the central busbar and the busbar power controller respectively;

[0102] In one possible embodiment, the main power module 200 includes multiple DC generators 210 and a corresponding number of multiple DC generator control boxes 220;

[0103] The DC generator 210 is connected to the central busbar via a DC generator contactor;

[0104] The DC generator control box 220 is connected to the DC generator contactor; the DC generator control box 220 is connected to the busbar power controller.

[0105] In one possible embodiment, the auxiliary power module 400 includes a DC auxiliary generator 410 and a DC auxiliary generator control box 420; the DC auxiliary generator 410 is connected to the left central busbar 511 via the auxiliary power contactor 515; the DC auxiliary generator control box 420 is connected to the auxiliary power contactor 515; and the DC auxiliary generator control box 420 is connected to the left busbar power controller 513.

[0106] In one possible embodiment, the intelligent power distribution cabinet module 500 includes a left intelligent power distribution cabinet 510 and a right intelligent power distribution cabinet 520;

[0107] The left intelligent power distribution cabinet 510 includes a left central busbar 511, a left emergency busbar 512, a left busbar power controller 513, a ground power contactor 514, an auxiliary power contactor 515, a left DC generator contactor 516, a left emergency battery contactor 517, a central parallel contactor 518, and a left emergency transfer contactor 519.

[0108] The right intelligent power distribution cabinet 520 includes a right central busbar 521, a right emergency busbar 522, a right busbar power controller 523, a right DC generator contactor 524, a right emergency battery contactor 525, an emergency parallel contactor 526, and a right emergency transfer contactor 527.

[0109] The left central busbar 511 is connected to the main power module 200 via the left DC generator contactor 516;

[0110] The left central busbar 511 is connected to the left emergency busbar 512 via the left emergency transfer contactor 519;

[0111] The left central busbar 511 is connected to the ground power module 300 via the ground power contactor 514;

[0112] The left central busbar 511 is connected to the auxiliary power module 400 via an auxiliary power contactor 515;

[0113] The left central busbar 511 is connected to the right central busbar 521 via the central parallel contactor 518;

[0114] The left emergency busbar 512 is connected to the emergency power module 100 via the left emergency battery contactor 517;

[0115] The left busbar power controller 513 is connected to the ground power contactor 514 to collect the status of the ground power contactor 514 and control the engagement and disengagement of the ground power contactor 514, thereby realizing the grid connection and disconnection of the ground power.

[0116] The left busbar power controller 513 is connected to the auxiliary power contactor 515 to collect the status of the auxiliary power contactor 515;

[0117] The left busbar power controller 513 is connected to the DC auxiliary generator control box 420, and the DC auxiliary generator control box 420 is connected to the auxiliary power contactor 515. This enables the left busbar power controller 513 to control the engagement and disengagement of the auxiliary power contactor 515 through the DC auxiliary generator control box 420, thereby controlling the grid connection or disconnection of the DC auxiliary generator 410.

[0118] The left busbar power controller 513 is connected to the left DC generator contactor 516 to collect the status of the left DC generator contactor 516;

[0119] The left busbar power controller 513 is connected to the DC generator control box 220, and the DC generator control box 220 is connected to the left DC generator contactor 516. This enables the left busbar power controller 513 to control the left DC generator contactor 516 to engage and disengage through the DC generator control box 220, thereby controlling the DC generator 210 to engage and disengage from the grid.

[0120] The left busbar power controller 513 is connected to the left emergency battery contactor 517 to collect the status of the left emergency battery contactor 517 and control the engagement and disengagement of the left emergency battery contactor 517, thereby realizing the grid connection and disconnection of the emergency battery 110.

[0121] The left busbar power controller 513 is connected to the emergency battery charger 120 to collect the charging status of the emergency battery charger 120 and control the connection and disconnection of the charging circuit of the emergency battery charger 120.

[0122] The left busbar power controller 513 is connected to the central parallel contactor 518 to collect the status of the central parallel contactor 518 and control the connection and disconnection of the central parallel contactor 518, thereby realizing the connection and disconnection of the left central busbar 511 and the right central busbar 521.

[0123] The left busbar power controller 513 is connected to the left emergency transfer contactor 519 to collect the status of the left emergency transfer contactor 519 and control the engagement and disengagement of the left emergency transfer contactor 519, thereby controlling the connection and disconnection of the left emergency busbar 512 and the left central busbar 511.

[0124] The right central busbar 521 is connected to the main power module 200 via the right DC generator contactor 524;

[0125] The right central busbar 521 is connected to the right emergency busbar 522 via the right emergency transfer contactor 527;

[0126] The right emergency busbar 522 is connected to the emergency power module 100 via the right emergency battery contactor 525;

[0127] The right emergency busbar 522 is connected to the left emergency busbar 512 via the emergency parallel contactor 526;

[0128] The right busbar power controller 523 is connected to the right DC generator contactor 524 to collect the status of the right DC generator contactor 524;

[0129] The right busbar power controller 523 is connected to the DC generator control box 220, and the DC generator control box 220 is connected to the right DC generator contactor 524. This enables the right busbar power controller 523 to control the engagement and disengagement of the right DC generator contactor 524 through the DC generator control box 220, thereby controlling the grid connection and disengagement of the DC generator 210.

[0130] The right busbar power controller 523 is connected to the right emergency battery contactor 525 to collect the status of the right emergency battery contactor 525 and control the connection and disconnection of the right emergency battery contactor 525, thereby realizing the control of the grid connection and disconnection of the emergency battery 110.

[0131] The right busbar power controller 523 is connected to the emergency battery charger 120 to collect the charging status of the emergency battery charger 120 and control the connection and disconnection of the charging circuit of the emergency battery charger 120.

[0132] The right busbar power controller 523 is connected to the emergency parallel contactor 526 to collect the status of the emergency parallel contactor 526 and control the connection and disconnection of the emergency parallel contactor 526, thereby realizing the connection and disconnection of the left emergency busbar 512 and the right emergency busbar 522.

[0133] The right busbar power controller 523 is connected to the right emergency transfer contactor 527 to collect the status of the right emergency transfer contactor 527 and control the engagement and disengagement of the right emergency transfer contactor 527, thereby controlling the connection and disconnection of the right emergency busbar 522 and the right central busbar 521.

[0134] In one possible embodiment, the control panel 700 is connected to the electrical display and control box 800 and is used to send status signals of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch to the electrical display and control box 800.

[0135] The electrical display and control box 800 is connected to the left busbar power controller 513 in the left intelligent distribution cabinet 510 and the right busbar power controller 523 in the right intelligent distribution cabinet 520, respectively. The electrical display and control box 800 sends signals from the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch to the busbar power controller, and at the same time receives and stores various key DC power parameters sent by the busbar power controller.

[0136] The avionics display 600 is connected to the left busbar power controller 513 in the left intelligent power distribution cabinet 510 and the right busbar power controller 523 in the right intelligent power distribution cabinet 520, respectively, and is used to receive and display various key DC power parameters sent by the busbar power controllers.

[0137] The communication protocol between the intelligent power distribution cabinet module 500 and the electrical display and control box 800 is CAN communication, with a transmission rate of not less than 10Hz.

[0138] The communication protocol between the intelligent power distribution cabinet module 500 and the avionics display 600 is 429 communication, with a transmission rate of 1-2Hz;

[0139] The communication protocol between the left intelligent power distribution cabinet module 510 and the right intelligent power distribution cabinet 520 is 422 communication, and the transmission rate is not less than 10Hz.

[0140] like Figure 2 As shown, according to a second aspect of the present invention, a method for intelligent power supply of redundant DC power supply for large aircraft is provided. The method for intelligent power supply of redundant DC power supply for large aircraft is characterized by comprising the following steps:

[0141] S1: The electrical display and control box 800 collects the status of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch and emergency transfer switch on the control panel 700 and sends them to the left busbar power controller 513 and right busbar power controller 523 in the intelligent power distribution cabinet module 500 via bus;

[0142] S2: The left busbar power controller 513 and the right busbar power controller 523 control the relevant contactor actions according to the switch positions on the control panel 700, the current status of each contactor, and the relevant logic in the internal software, thereby realizing the grid connection and disconnection of the emergency battery 110, the DC generator 210, the ground power module 300, and the DC auxiliary generator 410 according to specific logic, and correspondingly control the connection or disconnection of the charging circuit of the emergency battery charger 120, control the connection or disconnection of the left central busbar 511 and the right central busbar 521, control the connection or disconnection of the left central busbar 511 and the left emergency busbar 512, and control the connection or disconnection of the right central busbar 521 and the right emergency busbar 522;

[0143] S3: The left busbar power controller 513 and the right busbar power controller 523 collect the grid connection or disconnection status of the emergency battery 110, the DC generator 210, the ground power module 300, and the DC auxiliary generator 410, collect the on / off status of the charging circuit of the emergency battery charger 120, and collect key parameters such as voltage and current of each DC power source.

[0144] S4: The left busbar power controller 513 and the right busbar power controller 523 send the collected parameters to the avionics display 600 so that the pilot can grasp the key parameters of the aircraft's emergency power system;

[0145] S5: The left busbar power controller 513 and the right busbar power controller 523 send the collected parameters to the electrical display and control box 800 for storage, providing key data support for ground maintenance and power system fault diagnosis.

[0146] In step S2, the logic for the left busbar power controller 513 and the right busbar power controller 523 to control the ground power module 300 to connect to the grid is as follows:

[0147] When the DC ground power switch is turned on, the ground power supply is activated, and the left busbar power controller 513 in the left intelligent power distribution cabinet module 510 controls the ground power contactor 514 to be turned on, thereby controlling the ground power module 300 to be connected to the grid.

[0148] In step S2, the interlocking power supply logic between the left busbar power controller 513 and the right busbar power controller 523 and the ground power module 300, main power module 200, and auxiliary power module 400 is as follows:

[0149] When the ground power module 300 is connected to the grid, the left busbar power controller 513 controls the auxiliary power contactor 515 to disconnect through the DC auxiliary generator control box 420, thereby controlling the DC auxiliary generator 410 to disconnect from the grid; the left busbar power controller 513 and the right busbar power controller 523 control the left DC generator contactor 516 and the right DC generator contactor 524 to disconnect through the DC generator control box 220, thereby controlling the DC generator 410 to disconnect from the grid;

[0150] In step S2, the logic for the left busbar power controller 513 and the right busbar power controller 523 to control the main power module 200 to connect to the grid is as follows:

[0151] When the ground power switch is in the off position and the DC generator switch is in the on position, the left busbar power controller 513 and the right busbar power controller 523 control the left DC generator contactor 516 and the right DC generator contactor 524 to be connected through the DC generator control box 220, thereby controlling the DC generator 210 to be connected to the grid.

[0152] In one possible embodiment, in step S2, the logic by which the left busbar power controller 513 controls the auxiliary power module 400 to connect to the grid is as follows:

[0153] When the ground power switch is in the off position and the DC auxiliary generator switch is in the on position, the left busbar power controller 513 controls the auxiliary power contactor 515 to be turned on through the DC auxiliary generator control box 420, thereby controlling the DC auxiliary generator 410 to be connected to the grid.

[0154] In step S2, the logic for the left busbar power controller 513 and the right busbar power controller 523 to control the emergency power module 100 to connect to the grid, disconnect from the grid, or charge is as follows:

[0155] When the emergency battery switch is in the off position, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to disconnect, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to disconnect, thereby controlling the emergency battery 110 to be in a disconnected and non-charging state;

[0156] When the emergency battery switch is in the ON position and the emergency transfer switch is in the ON position, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to be turned on, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be turned off, thereby controlling the emergency battery 110 to be in a grid-connected and non-charging state;

[0157] When the emergency battery switch is in the ON position, the emergency transfer switch is in the OFF position, and the ground power module 300 is in the grid-connected state, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to disconnect, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be connected, thereby controlling the emergency battery 110 to be in the grid-connected and charging state;

[0158] When the emergency battery switch is in the ON position, the emergency transfer switch is in the OFF position, and the ground power module 300 is in the off-grid state and the main power module 200 is in the grid-connected state, when the number of DC generators 210 connected to the grid is greater than 2, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to disconnect, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be connected, thereby controlling the emergency battery 110 to be in the off-grid and charging state;

[0159] When the emergency battery switch is in the ON position, the emergency transfer switch is in the OFF position, and the ground power module 300 is in the off-grid state and the main power module 200 is in the grid-connected state, and the number of DC generators 210 connected to the grid is no more than 2, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to be connected, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be disconnected, thereby controlling the emergency battery 110 to be in the grid-connected and non-charging state;

[0160] When the emergency battery switch is in the ON position, the emergency transfer switch is in the OFF position, and the ground power module 300 and the main power module 200 are in the OFF state, the left busbar power controller 513 and the right busbar power controller 523 respectively control the left emergency battery contactor 517 and the right emergency battery contactor 525 to be turned on, and the left busbar power controller 513 and the right busbar power controller 523 control the charging circuit of the emergency battery charger 120 to be turned off, thereby controlling the emergency battery 110 to be in the grid-connected and non-charging state;

[0161] In step S2, the logic of the busbar power controller controlling the connection or disconnection of the central busbar and the emergency busbar is as follows:

[0162] When the emergency transfer switch is in the ON position, the left busbar power controller 513 controls the left emergency transfer contactor 519 to open, thereby controlling the left central busbar 511 and the left emergency busbar 512 to disconnect. The right busbar power controller 523 controls the right emergency transfer contactor 527 to open, thereby controlling the right central busbar 521 and the right emergency busbar 522 to disconnect. At this time, the emergency power module 100 supplies power to the onboard emergency load.

[0163] In step S2, the logic by which the left busbar power controller 513 controls the left central busbar 511 and the right central busbar 521 to be connected or disconnected is as follows:

[0164] When the left and right parallel switches are in the ON position, the left busbar power controller 513 controls the parallel contactor 518 to be turned on, thereby controlling the left central busbar 511 and the right central busbar 521 to be turned on.

[0165] When the left and right parallel switches are in the open position, the left busbar power controller 513 controls the parallel contactor 518 to open, thereby controlling the left central busbar 511 and the right central busbar 521 to disconnect.

[0166] When the left and right parallel switches are in the neutral position, if the ground power module 300 is connected to the grid, the left busbar power controller 513 controls the parallel contactor 518 to be turned on, thereby controlling the left central busbar 511 and the right central busbar 521 to be turned on, so that the ground power module 300 can supply power to the whole machine.

[0167] When the left and right parallel switches are in the neutral position and the main power module 200 is connected to the grid, if the number of DC generators 210 connected to the grid is greater than 4, the left busbar power controller 513 controls the parallel contactor 518 to disconnect, thereby controlling the left central busbar 511 and the right central busbar 521 to disconnect.

[0168] When the left and right parallel switches are in the neutral position and the main power module 200 is connected to the grid, if the number of DC generators 210 connected to the grid is no more than 4, the left busbar power controller 513 controls the parallel contactor 518 to be turned on, thereby controlling the left central busbar 511 and the right central busbar 521 to be turned on, so as to realize the left and right parallel power supply of the main power module 200.

[0169] In step S2, the logic by which the right busbar power controller 523 controls the left emergency busbar 512 and the right emergency busbar 522 to be connected or disconnected is as follows:

[0170] When the left busbar power controller 513 controls the left central busbar 511 and the right central busbar 521 to be connected, the right busbar power controller 523 controls the left emergency busbar 512 and the right emergency busbar 522 to be connected.

[0171] When the emergency transfer switch is in the ON position, the right busbar power controller 523 controls the emergency parallel contactor 526 to be turned on, thereby controlling the left emergency busbar 512 and the right emergency busbar 522 to be turned on.

[0172] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A redundancy intelligent power supply system for DC power supply in large aircraft, characterized in that, It includes an emergency power supply module (100), a main power supply module (200), a ground power supply module (300), an auxiliary power supply module (400), an intelligent power distribution cabinet module (500), an avionics display (600), a control panel (700), and an electrical display and control box (800). The emergency power module (100) is used to provide emergency power to the aircraft to ensure that ground inspection work is carried out normally or to provide emergency power for the aircraft to safely return after the mission is terminated during the execution of the mission. The main power module (200) is used to provide DC power for the entire aircraft when the large aircraft is performing its normal mission. The ground power module (300) is used to provide DC power for the entire aircraft during ground maintenance or inspection, and to provide power for engine starting. The auxiliary power module (400) is used to provide auxiliary power to the aircraft when the main power module cannot meet the onboard power requirements, and to start the engine in extreme cases. The intelligent power distribution cabinet module (500) is used for automated uninterrupted switching power supply control, power distribution protection, and status acquisition and monitoring of various DC power supplies for large aircraft, including grid connection, grid disconnection and interlocking; the intelligent power distribution cabinet module (500) includes a left intelligent power distribution cabinet (510) and a right intelligent power distribution cabinet (520). The left intelligent power distribution cabinet (510) includes a left central busbar (511), a left emergency busbar (512), a left busbar power controller (513), a ground power contactor (514), an auxiliary power contactor (515), a left DC generator contactor (516), a left emergency battery contactor (517), a central parallel contactor (518), and a left emergency transfer contactor (519). The right intelligent power distribution cabinet (520) includes a right central busbar (521), a right emergency busbar (522), a right busbar power controller (523), a right DC generator contactor (524), a right emergency battery contactor (525), an emergency parallel contactor (526), ​​and a right emergency transfer contactor (527). The left central busbar (511) is connected to the main power module (200) via the left DC generator contactor (516), to the left emergency busbar (512) via the left emergency conversion contactor (519), to the ground power module (300) via the ground power contactor (514), to the auxiliary power module (400) via the auxiliary power contactor (515), and to the right central busbar (521) via the central parallel contactor (518). The avionics display (600) is used to display key parameters of various DC power supplies; The control panel (700) is used to operate the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch. It communicates with the electrical display and control box (800) and sends the status signals of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch, and emergency transfer switch to the electrical display and control box (800). The electrical display and control box (800) is used to collect the switch status on the control panel (700) and send it to the intelligent power distribution cabinet module (500), and at the same time record the key parameters of various DC power supplies transmitted by the intelligent power distribution cabinet module (500); The emergency power supply module (100), main power supply module (200), ground power supply module (300), auxiliary power supply module (400), avionics display (600), control panel (700), and electrical display and control box (800) are respectively connected to the intelligent power distribution cabinet module (500).

2. The intelligent power supply system for redundant DC power supply of a large aircraft according to claim 1, characterized in that, The emergency power module (100) includes multiple sets of emergency batteries (110) and a corresponding number of emergency battery chargers (120). The emergency battery (110) is electrically connected to the emergency battery charger (120); the emergency battery (110) is connected to the emergency busbar via an emergency transfer contactor; The emergency battery charger (120) is connected to the central busbar and the busbar power controller, respectively.

3. The intelligent power supply system for redundant DC power supply of a large aircraft according to claim 2, characterized in that, The main power module (200) includes multiple DC generators (210) and a corresponding number of multiple DC generator control boxes (220). The DC generator (210) is connected to the central busbar via a DC generator contactor; The DC generator control box (220) is connected to the DC generator contactor; the DC generator control box (220) is connected to the busbar power controller.

4. The intelligent power supply system for redundant DC power supply of a large aircraft according to claim 3, characterized in that, The left emergency busbar (512) is connected to the emergency power module (100) via the left emergency battery contactor (517); The left busbar power controller (513) is connected to the ground power contactor (514) to collect the status of the ground power contactor (514) and control the engagement and disengagement of the ground power contactor (514), thereby realizing the grid connection and disconnection of the ground power. The left busbar power controller (513) is connected to the auxiliary power contactor (515) to collect the status of the auxiliary power contactor (515); The left busbar power controller (513) is connected to the DC auxiliary generator control box (420), and the DC auxiliary generator control box (420) is connected to the auxiliary power contactor (515). This enables the left busbar power controller (513) to control the engagement and disengagement of the auxiliary power contactor (515) through the DC auxiliary generator control box (420), thereby controlling the grid connection or disconnection of the DC auxiliary generator (410). The left busbar power controller (513) is connected to the left DC generator contactor (516) to collect the status of the left DC generator contactor (516); The left busbar power controller (513) is connected to the DC generator control box (220), and the DC generator control box (220) is connected to the left DC generator contactor (516). This enables the left busbar power controller (513) to control the left DC generator contactor (516) to engage and disengage through the DC generator control box (220), thereby controlling the DC generator (210) to engage and disengage from the grid. The left busbar power controller (513) is connected to the left emergency battery contactor (517) to collect the status of the left emergency battery contactor (517) and control the engagement and disengagement of the left emergency battery contactor (517), thereby realizing the grid connection and disengagement of the emergency battery (110). The left busbar power controller (513) is connected to the emergency battery charger (120) to collect the charging status of the emergency battery charger (120) and control the connection and disconnection of the charging circuit of the emergency battery charger (120); The left busbar power controller (513) is connected to the central parallel contactor (518) to collect the status of the central parallel contactor (518) and control the connection and disconnection of the central parallel contactor (518), thereby realizing the connection and disconnection of the left central busbar (511) and the right central busbar (521). The left busbar power controller (513) is connected to the left emergency transfer contactor (519) to collect the status of the left emergency transfer contactor (519) and control the engagement and disengagement of the left emergency transfer contactor (519), thereby realizing the connection and disconnection of the left emergency busbar (512) and the left central busbar (511). The right central busbar (521) is connected to the main power module (200) via the right DC generator contactor (524), to the right emergency busbar (522) via the right emergency transfer contactor (527), to the emergency power module (100) via the right emergency battery contactor (525), and to the left emergency busbar (512) via the emergency parallel contactor (526). The right busbar power controller (523) is connected to the right DC generator contactor (524) to collect the status of the right DC generator contactor (524); The right busbar power controller (523) is connected to the DC generator control box (220), and the DC generator control box (220) is connected to the right DC generator contactor (524). This enables the right busbar power controller (523) to control the engagement and disengagement of the right DC generator contactor (524) through the DC generator control box (220), thereby controlling the grid connection and disengagement of the DC generator (210). The right busbar power controller (523) is connected to the right emergency battery contactor (525) to collect the status of the right emergency battery contactor (525) and control the connection and disconnection of the right emergency battery contactor (525), thereby realizing the control of the grid connection and disconnection of the emergency battery (110). The right busbar power controller (523) is connected to the emergency battery charger (120) to collect the charging status of the emergency battery charger (120) and control the connection and disconnection of the charging circuit of the emergency battery charger (120); The right busbar power controller (523) is connected to the emergency parallel contactor (526) to collect the status of the emergency parallel contactor (526) and control the connection and disconnection of the emergency parallel contactor (526), ​​thereby realizing the connection and disconnection of the left emergency busbar (512) and the right emergency busbar (522); The right busbar power controller (523) is connected to the right emergency transfer contactor (527) to collect the status of the right emergency transfer contactor (527) and control the engagement and disengagement of the right emergency transfer contactor (527), thereby realizing the connection and disconnection of the right emergency busbar (522) and the right central busbar (521).

5. A large aircraft DC power redundancy intelligent power supply system according to claim 4, characterized in that, The auxiliary power module (400) includes a DC auxiliary generator (410) and a DC auxiliary generator control box (420); the DC auxiliary generator (410) is connected to the left central busbar (511) through the auxiliary power contactor (515); the DC auxiliary generator control box (420) is connected to the auxiliary power contactor (515); the DC auxiliary generator control box (420) is connected to the left busbar power controller (513).

6. The intelligent power supply system for redundant DC power supply of a large aircraft according to claim 5, characterized in that, The control panel (700) is connected to the electrical display and control box (800) and is used to send the status signals of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch and emergency transfer switch to the electrical display and control box (800).

7. A large aircraft DC power redundancy intelligent power supply system according to claim 6, characterized in that, The electrical display and control box (800) is connected to the left busbar power controller (513) in the left intelligent distribution cabinet (510) and the right busbar power controller (523) in the right intelligent distribution cabinet (520), respectively. The electrical display and control box (800) sends the signals of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switch, emergency battery switch and emergency transfer switch to the busbar power controller, and at the same time receives and stores the key parameters of various DC power supplies sent by the busbar power controller.

8. A large aircraft DC power redundancy intelligent power supply system according to claim 7, characterized in that, The avionics display (600) is connected to the left busbar power controller (513) in the left intelligent power distribution cabinet (510) and the right busbar power controller (523) in the right intelligent power distribution cabinet (520), respectively, and is used to receive and display various key DC power parameters sent by the busbar power controller.

9. A method for redundant intelligent power supply of DC power for large aircraft, employing the redundant intelligent power supply system for DC power of large aircraft as described in claim 8, characterized in that... Specifically, the steps include the following: S1: The electrical display and control box (800) collects the status of the DC generator switch, DC ground power switch, DC auxiliary generator switch, left and right parallel switches, emergency battery switch and emergency transfer switch on the control panel (700) and sends them to the left busbar power controller (513) and the right busbar power controller (523) in the intelligent power distribution cabinet module (500) via bus. S2: The left busbar power controller (513) and the right busbar power controller (523) control the relevant contactors to operate according to the switch positions on the control panel (700), the current status of each contactor, and the relevant logic in the internal software, thereby realizing the grid connection and disconnection of the emergency battery (110), the DC generator (210), the ground power module (300), and the DC auxiliary generator (410) according to specific logic, and correspondingly control the connection or disconnection of the charging circuit of the emergency battery charger (120), control the connection or disconnection of the left central busbar (511) and the right central busbar (521), control the connection or disconnection of the left central busbar (511) and the left emergency busbar (512), and control the connection or disconnection of the right central busbar (521) and the right emergency busbar (522). S3: The left busbar power controller (513) and the right busbar power controller (523) collect the grid connection or disconnection status of the emergency battery (110), the DC generator (210), the ground power module (300), and the DC auxiliary generator (410), collect the on / off status of the charging circuit of the emergency battery charger (120), and collect the voltage and current key parameters of each DC power supply; S4: The left busbar power controller (513) and the right busbar power controller (523) send the collected parameters to the avionics display (600) so that the pilot can master the key parameters of the aircraft's emergency power system; S5: The left busbar power controller (513) and the right busbar power controller (523) send the collected parameters to the electrical display and control box (800) for storage, providing key data support for ground maintenance and power system fault diagnosis.

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