Bidirectional 270V ground power supply combined socket

Abstract

The bidirectional 270V ground power supply combination socket is suitable for connection between an airborne power supply system and a ground power supply and comprises a shell, a binding post is arranged on one side face of the shell, a butt joint socket is arranged on the other side face of the shell, and a toggle switch is arranged at the position, close to the butt joint socket, of one side of the shell. An indicating lamp is arranged at the position close to the toggle switch, one end of the binding post is electrically connected with a power supply system, the other end of the binding post is connected with one end of the butt-joint socket through a busbar, and the other end of the butt-joint socket can be connected with a plug of a ground power supply in a pluggable mode; a circuit board is installed in the shell, a partner power supply module, a power supply module and a monitoring module are arranged on the circuit board, and the device has the advantages of being high in integration level, reliable in butt joint with a ground power supply, large in power, good in operability, high in environment resistance, convenient to replace and maintain and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of airborne sockets, and in particular relates to a bidirectional 270V ground power combination socket. Background Art

[0002] The two-way 270V ground power combination socket is used for aircraft power supply systems with high power demand. The existing ground power socket cannot realize power supply status display, cannot realize docking display with ground power, does not have functions such as high-power power supply, ground power voltage monitoring, ground power over-voltage and under-voltage protection, and is easy to detach after docking with the plug. The present invention can solve the problems that the existing 270V ground power socket cannot realize two-way power supply, cannot perform ground power status monitoring, cannot perform ground power voltage monitoring, cannot realize ground power over-voltage and under-voltage protection, and cannot realize cabin airtight protection, and has low efficiency. Summary of the invention

[0003] In view of this, the bidirectional 270V ground power combination socket provided by the present invention can solve the technical problem of low utilization efficiency of existing sockets.

[0004] A two-way 270V ground power combination socket, suitable for connecting an airborne power supply system with a ground power supply, comprises a shell, one side of the shell is provided with a terminal, the other side is provided with a docking socket, a button switch is provided on one side of the shell near the docking socket, an indicator light is provided near the button switch, one end of the terminal is electrically connected to the power supply system, the other end of the terminal is connected to one end of the docking socket through a bus bar, and the other end of the docking socket can be connected to a plug of the ground power supply in a plug-in manner;

[0005] A circuit board is installed in the housing, and a partner power supply module, a power supply module and a monitoring module are arranged on the circuit board, wherein the power supply module is used for converting the ground power supply voltage and inputting it into the power supply system, the partner power supply module is used for logical interlocking of electrical appliances powered by the ground power supply and the partner power supply module, and the monitoring module is used for monitoring abnormal power supply status of the ground power supply;

[0006] A control end socket is provided on the side of the housing and adjacent to the terminal, one end of the control end socket is electrically connected to the onboard controller, and the other end is electrically connected to the power supply module, the indicator light and the monitoring module, respectively, so as to be able to feed back status information to the onboard controller and display the status through the indicator light;

[0007] The button switch is electrically connected to the partner power supply module and is used to disconnect or connect the onboard power supply system and the ground power supply.

[0008] Beneficial Effects

[0009] The invention solves the problems that the existing 270V ground power socket cannot realize bidirectional power supply, cannot monitor the ground power status, cannot monitor the ground power voltage, cannot realize overvoltage and undervoltage protection of the ground power, and cannot realize airtight protection through the cabin. The present invention carries out functional integration design for the existing 270V ground power socket, realizes the "ground to aircraft" and "aircraft to partner" bidirectional ground power supply interlocking functions through the partner power supply control module design, realizes the ground power status monitoring, voltage monitoring, overvoltage and undervoltage protection and other functions through the ground power supply monitoring module design, intuitively displays the working status of the ground power through the panel design indicator light, realizes the product's airtight protection function through the cabin by installing the panel airtight sealing structure design, realizes the provision of a standard 270V DC ground power interface, and realizes the functions of monitoring the working status of the ground power and the implementation voltage, overvoltage and undervoltage protection, communication data reporting, fault data storage and other functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 It is a schematic diagram of the main body being provided with a docking socket;

[0012] Figure 2 It is a schematic diagram for setting up the monitoring module;

[0013] Figure 3 is a schematic diagram of the partner power supply module;

[0014] Figure 4 is a schematic diagram of a voltage sampling circuit;

[0015] Figure 5 is a schematic diagram of the drive circuit, where

[0016] 1. Box assembly; 2. Locking device; 3. Indicator light; 4. Toggle switch; 5. Partner power supply module; 6. Control end socket; 7. Bus; 8. Power module; 9. Monitoring module; 10. Terminal block; 11. Communication end socket; 12. Docking socket. DETAILED DESCRIPTION

[0017] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0018] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0019] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present disclosure, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0020] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure, and only show the components related to the present disclosure rather than being drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout type may also be more complicated.

[0021] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, one skilled in the art will appreciate that aspects may be practiced without these specific details.

[0022] like Figures 1 to 5The bidirectional 270V ground power combination socket shown is suitable for connecting an onboard power supply system with a ground power supply, and comprises a shell, a terminal 10 is provided on one side of the shell, a docking socket 12 is provided on the other side, and the docking socket 12 can be provided with a locking device 2 in the prior art, a button switch 4 is provided on one side of the shell near the docking socket 12, and an indicator light 3 is provided near the button switch 4, one end of the terminal 10 is electrically connected to the power supply system, and the other end of the terminal 10 is connected to one end of the docking socket 12 (also provided with a terminal) through a bus 7, and the other end of the docking socket 12 can be connected to a plug of the ground power supply in a plug-in manner;

[0023] A circuit board is installed in the shell, and a partner power supply module 5, a power supply module 8 and a monitoring module 9 are arranged on the circuit board, wherein the power supply module 8 is used for converting the ground power supply voltage and inputting it into the power supply system, the partner power supply module 5 is used for logical interlocking of the electrical appliances powered by the ground power supply and the partner power supply module 5, and the monitoring module 9 is used for monitoring the abnormal state of the ground power supply;

[0024] A control end socket 6 is provided on the side of the housing and adjacent to the terminal 10. One end of the control end socket 6 is electrically connected to the onboard controller, and the other end is electrically connected to the power supply module 5, the indicator light 3 and the monitoring module 9, respectively, so as to be able to feed back status information to the onboard controller and display the status through the indicator light 3.

[0025] The button switch 4 is electrically connected to the partner power supply module 5 and is used to disconnect or connect the onboard power supply system with the ground power supply.

[0026] The two-way ground power supply control and interlocking functions of "ground to aircraft" and "aircraft to partner" are realized. The product is designed with a ground power monitoring module 9, which is equipped with a ground power docking reliability detection circuit to realize the ground power docking monitoring function. The product is equipped with a ground power status detection circuit to realize ground power status detection; it is equipped with a ground power voltage monitoring function to realize real-time monitoring of the ground power voltage; it is equipped with a ground power over-voltage and under-voltage protection function to realize ground power over-voltage and under-voltage protection to avoid over-voltage and under-voltage damage to the subsequent power-consuming equipment; it is equipped with a ground power fault data storage function to realize real-time storage of fault data, which is convenient for ground power fault troubleshooting.

[0027] As a specific implementation scheme provided in this case, the input end of the power module 8 is connected to the terminal 10 of the docking socket 12, and the output end is connected to the partner power supply module 5, which is used for the electrical logic interlocking of the ground power supply and the partner power supply module 5.

[0028] As a specific implementation provided in this case, the partner power supply module 5 includes a first relay RL1 and a second relay RL2, and the button switch 4 includes a first switch K1-1 and a second switch K1-2. The first switch K1-1 and the second switch K1-2 are switches in the same direction. The button switch 4 can control the first switch K1-1 and the second switch K1-2 to be turned on or off at the same time, wherein:

[0029] One end of the docking socket 12 is connected to one end of the first relay RL1, the other end of the docking socket 12 is connected to the control end socket 6, the other end of the first relay RL1 is connected to the control end socket 6 through the second switch K1-2, one end of the second relay RL2 is grounded, and the other end is connected to the first relay RL1 through the first switch K1-1;

[0030] When the button switch 4 is turned on, power can be supplied to other devices through the docking socket 12 . When the button switch 4 is turned off, the ground power supply charges the onboard power supply system through the docking socket 12 .

[0031] As a specific implementation provided in this case, a plurality of long pins, a first short pin, a second short pin, a third short pin and a fourth short pin are arranged in the docking socket 12, wherein:

[0032] The first short pin and the second short pin are used to determine whether the plug of the ground power supply is plugged in place, and feedback is given through the control end socket 6. If yes, the relay of the power supply system is closed to charge the power supply system. If not, the relay of the power supply system is disconnected to stop charging the power supply system.

[0033] One end of the third short pin and the fourth short pin are both electrically connected to the monitoring module 9. If the plugs of the ground power supply are plugged into place with the other ends of the third short pin and the fourth short pin, a control voltage of 28V is fed back through the control end socket 6. Otherwise, a fault signal is fed back to the onboard controller through the communication end socket 11 provided on the shell to stop the power supply of the ground power supply. By monitoring the short pin in place signal by the monitoring module 9, the reliability of the ground power supply connection of the product can be determined, while the live plugging and unplugging of the product and the ground power supply in the workshop can be avoided, thereby improving the safety of the equipment. By determining the ground and open signals of the short pins, the reliability of the ground power supply connection of the product can be determined. By monitoring the short pin in place signal by the monitoring module 9, the reliability of the ground power supply connection of the product can be determined, while the live plugging and unplugging of the product and the ground power supply in the workshop can be avoided, thereby improving the safety of the equipment.

[0034] As a specific implementation provided in this case, the output end of the fourth short pin is grounded, the output end of the third short pin is connected to an input end of the photoelectric coupler, the other input end of the photoelectric coupler is configured with a 12V DC power supply, and a resistor R13 for voltage division is connected in series, one output end of the photoelectric coupler is grounded, and the other output end is electrically connected to the monitoring module 9.

[0035] As a specific implementation provided in this case, the monitoring module 9 includes a voltage sampling circuit, which includes a resistor R7, a resistor R8, a resistor R9, a comparator IC3A, a transient suppression diode TS1 and an adjustable resistor W1. The transient suppression diode TS1 prevents the comparator IC3A from being broken down, and the adjustable resistor W1 is used to adjust the output accuracy of the comparator IC3A, wherein:

[0036] One end of the resistor R7 is electrically connected to the docking plug, and the other end is connected in series with the resistor R8 and the resistor R9 in sequence. The output end of the resistor R9 is respectively connected to the transient suppression diode TS1, the adjustable resistor W1 and one end of the capacitor C15 used for filtering. The transient suppression diode TS1, the adjustable resistor W1 and one end of the capacitor C15 are all grounded, and the adjustable resistor W1 is connected in series with the resistor R10;

[0037] The positive input terminal of the comparator IC3A is connected to the 12V DC power supply and the output terminal of the resistor R9, the negative input terminal of the comparator IC3A is connected to the ground and the output terminal of the comparator, the output terminal of the comparator IC3A is connected to the communication terminal socket 11, and the 12V DC power supply is configured with a capacitor C16;

[0038] When the input of the ground power supply is abnormal (overvoltage or undervoltage or overcurrent, etc., such as detection with the overvoltage detection circuit, etc.), the fault signal output by the comparator IC3A is fed back to the onboard controller through the communication terminal socket 11, and the controller disconnects the relay of the power supply system or the relay of the power supply, and cuts off the power supply of the power supply. The ground power supply status detection is realized, and the detection data is reported in real time, which is convenient for ground staff to quickly locate the fault and improve maintenance efficiency. The module is equipped with a ground power supply voltage monitoring function, which realizes real-time monitoring and reporting of the ground power supply voltage, so that the aircraft operator can grasp the ground power supply voltage data in real time.

[0039] As a specific implementation provided in this case, the monitoring module 9 also includes a driving circuit, which includes a third relay, an enhanced MOS tube Q1 with a body diode, and a single-chip microcomputer, wherein:

[0040] An output end of the single-chip microcomputer is connected to an input end of the third relay, an output end of the third relay is connected to the control end socket 6, another output end of the single-chip microcomputer is connected to the resistor R2, the capacitor C31, the voltage-stabilizing diode and the gate of the MOS tube in sequence, and the resistor R2, the capacitor C31 and the voltage-stabilizing diode are arranged in parallel, the source of the MOS tube is grounded, the drain of the MOS tube is connected to another input end of the third relay, and another output end of the third relay is connected to the control end socket 6;

[0041] The MOS tube is used for self-test of the power supply, and when the charging voltage of the ground power supply meets the grid connection conditions, the coil of the third relay can be attracted and output a control voltage of 28V, that is, when the grid connection conditions are met, the single-chip microcomputer outputs the "connect" command, at which time the MOS tube Q1 is turned on, so that the coil of the third relay is attracted and outputs a control voltage of 28V. This ensures that the product is protected when the external voltage is over-voltage or under-voltage, avoiding damage to the subsequent electrical equipment. The software performs filtering processing to reduce the false alarm rate of the product.

[0042] Furthermore, the third relay is provided with a diode D4, and an anode of the diode D4 is connected to an output end of the third relay.

[0043] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A two-way 270V ground power combination socket, suitable for connecting an onboard power supply system with a ground power supply, comprising a housing, characterized in that: A terminal is provided on one side of the shell, and a docking socket is provided on the other side. A button switch is provided on one side of the shell near the docking socket, and an indicator light is provided near the button switch. One end of the terminal is electrically connected to the power supply system, and the other end of the terminal is connected to one end of the docking socket through a bus bar. The other end of the docking socket can be connected to a plug of a ground power supply in a plug-in manner. A circuit board is installed in the housing, and a partner power supply module, a power supply module and a monitoring module are arranged on the circuit board, wherein the power supply module is used for converting the ground power supply voltage and inputting it into the power supply system, the partner power supply module is used for logical interlocking of electrical appliances powered by the ground power supply and the partner power supply module, and the monitoring module is used for monitoring abnormal power supply status of the ground power supply; A control end socket is provided on the side of the housing and adjacent to the terminal, one end of the control end socket is electrically connected to the onboard controller, and the other end is electrically connected to the power supply module, the indicator light and the monitoring module, respectively, so as to be able to feed back status information to the onboard controller and display the status through the indicator light; The button switch is electrically connected to the partner power supply module and is used to disconnect or connect the onboard power supply system and the ground power supply.

2. The two-way 270V ground power combination socket according to claim 1, characterized in that: The input end of the power module is connected to the terminal of the docking socket, and the output end is connected to the partner power supply module, which is used for the electrical appliance logic interlocking between the ground power supply and the partner power supply module.

3. The two-way 270V ground power combination socket according to claim 2, characterized in that: The partner power supply module includes a first relay RL1 and a second relay RL2, and the button switch includes a first switch K1-1 and a second switch K1-2, the first switch K1-1 and the second switch K1-2 are switches of the same direction, and the button switch can control the first switch K1-1 and the second switch K1-2 to be turned on or off at the same time, wherein: One end of the docking socket is connected to one end of the first relay RL1, the other end of the docking socket is connected to the control end socket, the other end of the first relay RL1 is connected to the control end socket through the second switch K1-2, one end of the second relay RL2 is grounded, and the other end is connected to the first relay RL1 through the first switch K1-1; When the button switch is turned on, power can be supplied to other devices through the docking socket. When the button switch is turned off, the ground power supply charges the onboard power supply system through the docking socket.

4. The two-way 270V ground power combination socket according to claim 2, characterized in that: The docking socket is provided with a plurality of long pins, a first short pin, a second short pin, a third short pin and a fourth short pin, wherein: The first short pin and the second short pin are used to determine whether the plug of the ground power supply is plugged in place, and feedback is given through the control end socket. If yes, the relay of the power supply system is closed to charge the power supply system; if no, the relay of the power supply system is disconnected to stop charging the power supply system; One end of the third short pin and the fourth short pin are electrically connected to the monitoring module. If the plugs of the ground power supply are plugged into the other ends of the third short pin and the fourth short pin, a 28V control voltage is fed back through the control end socket. Otherwise, a fault signal is fed back to the onboard controller through the communication end socket provided on the shell to stop the power supply of the ground power supply.

5. The two-way 270V ground power combination socket according to claim 4, characterized in that: The output end of the fourth short pin is grounded, the output end of the third short pin is connected to an input end of the photoelectric coupler, the other input end of the photoelectric coupler is configured with a 12V DC power supply, and a resistor R13 for voltage division is connected in series, one output end of the photoelectric coupler is grounded, and the other output end is electrically connected to the monitoring module.

6. The two-way 270V ground power combination socket according to claim 5, characterized in that: The monitoring module includes a voltage sampling circuit, which includes a resistor R7, a resistor R8, a resistor R9, a comparator IC3A, a transient suppression diode TS1 and an adjustable resistor W1. The transient suppression diode TS1 prevents the comparator IC3A from being broken down, and the adjustable resistor W1 is used to adjust the output accuracy of the comparator IC3A, wherein: One end of the resistor R7 is electrically connected to the docking plug, and the other end is connected in series with resistors R8 and R9 in sequence, the output end of the resistor R9 is respectively connected to a transient suppression diode TS1, an adjustable resistor W1 and one end of a capacitor C15 for filtering, the transient suppression diode TS1, the adjustable resistor W1 and one end of the capacitor C15 are all grounded, and the adjustable resistor W1 is connected in series with a resistor R10; The positive input terminal of the comparator IC3A is connected to a 12V DC power supply and the output terminal of the resistor R9, the negative input terminal of the comparator IC3A is connected to the ground and the output terminal of the comparator, the output terminal of the comparator IC3A is connected to the communication terminal socket, and the 12V DC power supply is configured with a capacitor C16; When the input of the ground power supply is abnormal, the fault signal output by the comparator IC3A is fed back to the onboard controller through the communication terminal socket, and the controller disconnects the relay of the power supply system or the relay of the power supply, thereby cutting off the power supply of the power supply.

7. The two-way 270V ground power combination socket according to claim 6, characterized in that: The monitoring module further includes a driving circuit, which includes a third relay, an enhanced MOS tube Q1 with a body diode, and a single-chip microcomputer, wherein: One output end of the single-chip microcomputer is connected to one input end of the third relay, one output end of the third relay is connected to the control end socket, another output end of the single-chip microcomputer is connected to the resistor R2, the capacitor C31, the voltage-stabilizing diode and the gate of the MOS tube in sequence, and the resistor R2, the capacitor C31 and the voltage-stabilizing diode are arranged in parallel, the source of the MOS tube is grounded, the drain of the MOS tube is connected to another input end of the third relay, and another output end of the third relay is connected to the control end socket; The MOS tube is used for self-test of the power supply, and when the charging voltage of the ground power supply meets the grid connection conditions, the coil of the third relay can be attracted and output a control voltage of 28V.

8. The two-way 270V ground power combination socket according to claim 7, characterized in that: The third relay is provided with a diode D4, and the anode of the diode D4 is connected to the output end of the third relay.

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