Dual power interlock control circuit, dual power supply system and remotely piloted cockpit

Abstract

The utility model discloses a kind of dual power interlock control circuit, dual power supply system and remote control cockpit. The circuit includes power supply mode selection module and power supply control module, by setting power supply mode selection module control power supply control module selects and load end conduction first power supply or second power supply, to avoid first power supply and second power supply simultaneously power supply to load end, to avoid first power supply and second power supply between electric energy backflow and interference, and then improve the stability and reliability of power supply power supply.

Description

Technical Field

[0001] This utility model relates to the field of power supply control technology, and in particular to a dual power supply interlock control circuit, a dual power supply system, and a remote control cockpit. Background Technology

[0002] Currently, most dual power supplies on the market only have a single interlock control circuit. Figure 1 A schematic diagram of a dual-power single-interlock control circuit provided for the prior art is shown below. Figure 1 As shown, the dual-power single-interlock circuit includes a first AC contactor KM1 and a second AC contactor KM2. Specifically, the live wire L1, neutral wire N1, and ground wire PE1 of the first power source U1 (e.g., a generator) are connected to the main contact input terminal of the first AC contactor KM1. The live wire L2, neutral wire N2, and ground wire PE2 of the second power source U2 (e.g., mains power) are connected to the main contact input terminal of the second AC contactor KM2. The live wire L1 of the first power source U1 is connected to the coil input terminal of the first AC contactor KM1, and the neutral wire N1 of the first power source U1 is connected to the coil output terminal of the first AC contactor KM1. The live wire L2 of the second power source U2 is connected to the coil input terminal of the second AC contactor KM2, and the neutral wire N2 of the second power source U2 is connected to the coil output terminal of the second AC contactor KM2. The main contact output terminals of both the first AC contactor KM1 and the second AC contactor KM2 are connected to the load terminal 10. When the first power supply U1 and the second power supply U2 output electrical energy simultaneously, the electrical energy of the first power supply U1 will flow back to the second power supply U2 or the electrical energy of the second power supply U2 will flow back to the first power supply U1, thereby interfering with the stability of the power supply and reducing the reliability of the power supply. Utility Model Content

[0003] This utility model provides a dual power supply interlock control circuit, a dual power supply system, and a remote control cockpit to avoid power backflow interference between power supplies and improve the stability and reliability of power supply.

[0004] In a first aspect, the present invention provides a dual power supply interlock control circuit, which includes a power supply mode selection module and a power supply control module.

[0005] The neutral, live, and ground wires of the first power supply are connected to the first power supply input terminal of the power supply control module, the neutral, live, and ground wires of the second power supply are connected to the second power supply input terminal of the power supply control module, and the power supply output terminal of the power supply control module is connected to the load terminal.

[0006] The live wire of the second power supply is connected to the first terminal of the power supply mode selection module, the second terminal of the power supply mode selection module is connected to the first interlock input terminal of the power supply control module, the first interlock output terminal of the power supply control module is connected to the second power supply control input terminal of the power supply control module, and the second power supply control output terminal of the power supply control module is connected to the neutral wire of the second power supply.

[0007] The live wire of the first power supply is connected to the third terminal of the power supply mode selection module, the fourth terminal of the power supply mode selection module is connected to the second interlock input terminal of the power supply control module, the second interlock output terminal of the power supply control module is connected to the first power supply control input terminal of the power supply control module, and the first power supply control output terminal of the power supply control module is connected to the neutral wire of the first power supply.

[0008] Optionally, the power supply control module includes a first power supply control unit and a second power supply control unit;

[0009] The first three-phase power input terminal of the first power supply control unit serves as the first power supply input terminal of the power supply control module, and the second three-phase power input terminal of the second power supply control unit serves as the second power supply input terminal of the power supply control module. The first three-phase power output terminal of the first power supply control unit and the second three-phase power output terminal of the second power supply control unit are connected and serve as the power supply output terminal of the power supply control module.

[0010] The first locking terminal of the first power supply control unit serves as the first interlock input terminal of the power supply control module, the second locking terminal of the first power supply control unit serves as the first interlock output terminal of the power supply control module, the first power supply control terminal of the first power supply control unit serves as the first power supply control input terminal of the power supply control module, and the second power supply control terminal of the first power supply control unit serves as the first power supply control output terminal of the power supply control module.

[0011] The third locking terminal of the second power supply control unit serves as the second interlock input terminal of the power supply control module, the fourth locking terminal of the second power supply control unit serves as the second interlock output terminal of the power supply control module, the third power supply control terminal of the second power supply control unit serves as the second power supply control input terminal of the power supply control module, and the fourth power supply control terminal of the second power supply control unit serves as the second power supply control output terminal of the power supply control module.

[0012] Optionally, the first power supply control unit includes a first contactor;

[0013] The first contactor includes a first three-pole normally open switch, a first normally closed switch, and a first coil;

[0014] The first end of the first three-pole linkage normally open switch serves as the first three-phase power input terminal of the first power supply control unit, and the second end of the first three-pole linkage normally open switch serves as the first three-phase power output terminal of the first power supply control unit.

[0015] The first end of the first normally closed switch serves as the first locking end of the first power supply control unit, and the second end of the first normally closed switch serves as the second locking end of the first power supply control unit.

[0016] The first end of the first coil serves as the first power supply control terminal of the first power supply control unit, and the second end of the first coil serves as the second power supply control terminal of the first power supply control unit.

[0017] Optionally, the second power supply control unit includes a second contactor;

[0018] The second contactor includes a second three-pole linkage normally open switch, a second normally closed switch, and a second coil;

[0019] The first end of the second three-pole linkage normally open switch serves as the second three-phase power input terminal of the second power supply control unit, and the second end of the second three-pole linkage normally open switch serves as the second three-phase power output terminal of the second power supply control unit.

[0020] The first end of the second normally closed switch serves as the third locking end of the second power supply control unit, and the second end of the second normally closed switch serves as the fourth locking end of the second power supply control unit.

[0021] The first end of the second coil serves as the third power supply control terminal of the second power supply control unit, and the second end of the second coil serves as the fourth power supply control terminal of the second power supply control unit.

[0022] Optionally, the power supply mode selection module includes a selection switch;

[0023] The selection switch includes a selection button, a first selection switch, and a second selection switch;

[0024] The selection button is mechanically connected to the knife switch of the first selection switch and the knife switch of the second selection switch;

[0025] The first end of the first selection switch serves as the first end of the power supply mode selection module, and the second end of the first selection switch serves as the second end of the power supply mode selection module.

[0026] The first end of the second selection switch serves as the third end of the power supply mode selection module, and the second end of the second selection switch serves as the fourth end of the power supply mode selection module.

[0027] The selection button is used to control both the first selection switch and the second selection switch to be off, or to control the first selection switch to be on and the second selection switch to be off, or to control the first selection switch to be off and the second selection switch to be on.

[0028] Optionally, the first power source includes a generator.

[0029] Optionally, the second power source includes mains power.

[0030] Secondly, this utility model embodiment also provides a dual power supply system, which includes the dual power supply interlock control circuit provided in any embodiment of this utility model.

[0031] Thirdly, this utility model embodiment also provides a remote control cockpit, which includes the dual power supply interlock control circuit provided in any embodiment of this utility model.

[0032] This utility model embodiment controls the power supply control module to select the first power supply or the second power supply that is connected to the load end by setting a power supply mode selection module, so as to avoid the first power supply and the second power supply supplying power to the load end at the same time, thereby avoiding power backflow interference between the first power supply and the second power supply, and thus improving the stability and reliability of power supply. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A schematic diagram of a dual-power-supply, single-interlock control circuit provided for the prior art;

[0035] Figure 2 A schematic diagram of a dual-power interlock control circuit provided in an embodiment of this utility model;

[0036] Figure 3 A schematic diagram of another dual-power interlock control circuit provided in an embodiment of this utility model. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] Figure 2 A schematic diagram of a dual-power interlock control circuit provided in an embodiment of this utility model is shown below. Figure 2 As shown, the dual power supply interlock control circuit includes a power supply mode selection module 110 and a power supply control module 120.

[0040] The neutral wire N1, live wire L1, and ground wire PE1 of the first power supply U1 are connected to the first power supply input terminal A of the power supply control module 120. The neutral wire N2, live wire L2, and ground wire PE2 of the second power supply U2 are connected to the second power supply input terminal B of the power supply control module 120. The power supply output terminal C of the power supply control module 120 is connected to the load terminal 10.

[0041] The live wire L2 of the second power supply U2 is connected to the first terminal T1 of the power supply mode selection module 110, the second terminal T2 of the power supply mode selection module 110 is connected to the first interlock input terminal D1 of the power supply control module 120, the first interlock output terminal D2 of the power supply control module 120 is connected to the second power supply control input terminal E3 of the power supply control module 120, and the second power supply control output terminal E4 of the power supply control module 120 is connected to the neutral wire N2 of the second power supply U2.

[0042] The live wire L1 of the first power supply U1 is connected to the third terminal T3 of the power supply mode selection module 110, the fourth terminal T4 of the power supply mode selection module 110 is connected to the second interlock input terminal D3 of the power supply control module 120, the second interlock output terminal D4 of the power supply control module 120 is connected to the first power supply control input terminal E1 of the power supply control module 120, and the first power supply control output terminal E2 of the power supply control module 120 is connected to the neutral wire N1 of the first power supply U1.

[0043] The power supply control module 120 can control the on / off state between the first power supply control input terminal E1 and the first power supply control output terminal E2, as well as the on / off state between the first power supply input terminal A and the power supply output terminal C, and between the first interlock input terminal D1 and the first interlock output terminal D2. Specifically, when the power supply between the first power supply control input terminal E1 and the first power supply control output terminal E2 is in an on state, the on / off state between the first power supply input terminal A and the power supply output terminal C is in a conducting state, and the on / off state between the first interlock input terminal D1 and the first interlock output terminal D2 is in a conducting state. The power supply on / off state between the first power supply control input terminal E1 and the first power supply control output terminal E2 is determined by the conducting state of the second interlock input terminal D3 and the second interlock output terminal D4.

[0044] The power supply control module 120 can control the on / off state between the second power supply control input terminal E3 and the second power supply control output terminal E4, as well as the on / off state between the second power supply input terminal B and the power supply output terminal C, and between the second interlock input terminal D3 and the second interlock output terminal D4. Furthermore, when the power supply between the second power supply control input terminal E3 and the second power supply control output terminal E4 is in an on state, and the power supply between the second power supply input terminal B and the power supply output terminal C is in a conducting state, the power supply between the second interlock input terminal D3 and the second interlock output terminal D4 is in a conducting state. The power supply state between the second power supply control input terminal E3 and the second power supply control output terminal E4 is determined by the conducting state of the first interlock input terminal D1 and the first interlock output terminal D2.

[0045] The power supply mode selection module 110 is used to control the power supply status of the power supply, including a no-power-supply position, a first power supply position, and a second power supply position. When the power supply mode selection module 110 is in the no-power-supply position, it controls both the first power supply U1 and the second power supply U2 to not supply power. At this time, the first terminal T1 and the second terminal T2 of the power supply mode selection module 110 are not conducting, and the third terminal T3 and the fourth terminal T4 are not conducting. This allows the power supply control module 120 to prevent the connection circuits between the first power supply U1 and the second power supply U2 and the load terminal 10 from being connected. When the power supply mode selection module 110 is in the first power supply position, it controls the first power supply U1 to supply power, while the second power supply U2 is not supplying power. At this time, the first terminal T1 and the second terminal T2 of the power supply mode selection module 110 are not conducting, and the third terminal T3 and the fourth terminal T4 are conducting. This allows the power supply control module 120 to connect the connection circuit between the first power supply U1 and the load terminal 10, and disconnect the connection circuit between the second power supply U2 and the load terminal 10. When the power supply mode selection module 110 is in the second power supply position, the power supply mode selection module 110 can control the second power supply U2 to supply power and the first power supply U1 to not supply power. At this time, the first terminal T1 and the second terminal T2 of the power supply mode selection module 110 are connected, and the third terminal T3 and the fourth terminal T4 are not connected. It can control the power supply control module 120 to disconnect the connection circuit between the first power supply U1 and the load terminal 10, and connect the connection circuit between the second power supply U2 and the load terminal 10.

[0046] Based on the above connection relationship, the working principle of the dual power supply interlock control circuit is explained as follows: When the power supply mode selection module 110 is in the no-power-supply position, the power supply mode selection module 110 can control both the first power supply U1 and the second power supply U2 to not supply power. At this time, the first terminal T1 and the second terminal T2 of the power supply mode selection module 110 are not conducting, and the third terminal T3 and the fourth terminal T4 are not conducting. This prevents the power supply control module 120 from outputting power to the first power supply control input terminal E1 through the second interlock input terminal D3 and the second interlock output terminal D4. The first interlock output terminal D2 cannot output power to the second power supply control input terminal E3, causing the power supply between the first power supply control input terminal E1 and the first power supply control output terminal E2 to be in a de-energized state, the power supply between the first power supply input terminal A and the power supply output terminal C to be in a disconnected state, the power supply between the second power supply control input terminal E3 and the second power supply control output terminal E4 to be in a de-energized state, and the power supply between the second power supply input terminal B and the power supply output terminal C to be in a disconnected state. That is, neither the first power supply U1 nor the second power supply U2 can output power to the load terminal 10.

[0047] When the power supply mode selection module 110 is in the first power supply position, the power supply mode selection module 110 can control the first power supply U1 to supply power, and the second power supply U2 to not supply power. At this time, the first terminal T1 and the second terminal T2 of the power supply mode selection module 110 are not connected, and the third terminal T3 and the fourth terminal T4 are connected. Power can be output to the first power supply control input terminal E1 through the second interlock input terminal D3 and the second interlock output terminal D4. Power cannot be output to the second power supply control input terminal E3 through the first interlock input terminal D1 and the first interlock output terminal D2. As a result, the power supply state between the first power supply control input terminal E1 and the first power supply control output terminal E2 is on, the power supply state between the first power supply input terminal A and the power supply output terminal C is on, the power supply state between the second power supply control input terminal E3 and the second power supply control output terminal E4 is off, and the power supply state between the second power supply input terminal B and the power supply output terminal C is off. That is, the first power supply U1 outputs power to the load terminal 10.

[0048] When the power supply mode selection module 110 is in the second power supply position, it can control the second power supply U2 to supply power while the first power supply U1 does not supply power. At this time, the first terminal T1 and the second terminal T2 of the power supply mode selection module 110 are connected, while the third terminal T3 and the fourth terminal T4 are not connected. Power can be output to the second power supply control input terminal E3 through the first interlock input terminal D1 and the first interlock output terminal D2. Power cannot be output to the first power supply control input terminal E1 through the second interlock input terminal D3 and the second interlock output terminal D4. This results in the following power supply states: the second power supply control input terminal E3 and the second power supply control output terminal E4 are in the on state; the second power supply input terminal B and the power supply output terminal C are in the on state; the first power supply control input terminal E1 and the first power supply control output terminal E2 are in the off state; and the first power supply input terminal A and the power supply output terminal C are in the off state. In other words, the second power supply U2 outputs power to the load terminal 10.

[0049] This utility model embodiment controls the power supply control module 120 to select the first power supply U1 or the second power supply U2 that is connected to the load terminal 10 by setting the power supply mode selection module 110, so as to avoid the first power supply U1 and the second power supply U2 supplying power to the load terminal 10 at the same time, thereby avoiding power backflow interference between the first power supply U1 and the second power supply U2, and thus improving the stability and reliability of the power supply.

[0050] Based on the above embodiments, optionally, Figure 3 A schematic diagram of another dual-power interlock control circuit provided in an embodiment of this utility model. (See diagram below.) Figure 3 As shown, the power supply control module 120 includes a first power supply control unit 121 and a second power supply control unit 122;

[0051] The first three-phase power input terminal of the first power supply control unit 121 serves as the first power supply input terminal A of the power supply control module 120, the second three-phase power input terminal of the second power supply control unit 122 serves as the second power supply input terminal B of the power supply control module 120, and the first three-phase power output terminal of the first power supply control unit 121 and the second three-phase power output terminal of the second power supply control unit 122 are connected and serve as the power supply output terminal C of the power supply control module 120.

[0052] The first locking terminal of the first power supply control unit 121 serves as the first interlock input terminal D1 of the power supply control module 120, the second locking terminal of the first power supply control unit 121 serves as the first interlock output terminal D2 of the power supply control module 120, the first power supply control terminal of the first power supply control unit 121 serves as the first power supply control input terminal E1 of the power supply control module 120, and the second power supply control terminal of the first power supply control unit 121 serves as the first power supply control output terminal E2 of the power supply control module 120.

[0053] The third locking terminal of the second power supply control unit 122 serves as the second interlock input terminal D3 of the power supply control module 120, the fourth locking terminal of the second power supply control unit 122 serves as the second interlock output terminal D4 of the power supply control module 120, the third power supply control terminal of the second power supply control unit 122 serves as the second power supply control input terminal E3 of the power supply control module 120, and the fourth power supply control terminal of the second power supply control unit 122 serves as the second power supply control output terminal E4 of the power supply control module 120.

[0054] Specifically, the first power supply control unit 121 includes a first contactor KM3; the first contactor KM3 includes a first three-pole normally open switch, a first normally closed switch, and a first coil;

[0055] The first end of the first three-pole normally open switch serves as the first three-phase power input terminal of the first power supply control unit 121, and the second end of the first three-pole normally open switch serves as the first three-phase power output terminal of the first power supply control unit 121; the first end of the first normally closed switch serves as the first locking terminal of the first power supply control unit 121, and the second end of the first normally closed switch serves as the second locking terminal of the first power supply control unit 121; the first end of the first coil serves as the first power supply control terminal of the first power supply control unit 121, and the second end of the first coil serves as the second power supply control terminal of the first power supply control unit 121.

[0056] The energization state of the first coil controls the on / off state of the first three-pole linkage normally open switch and the first normally closed switch. Specifically, when the first coil is energized, the first three-pole linkage normally open switch is on and the first normally closed switch is off; when the first coil is de-energized, the first three-pole linkage normally open switch is off and the first normally closed switch is open and on.

[0057] The second power supply control unit 122 includes a second contactor KM4; the second contactor KM4 includes a second three-pole linkage normally open switch, a second normally closed switch, and a second coil;

[0058] The first terminal of the second three-pole linkage normally open switch serves as the second three-phase power input terminal of the second power supply control unit 122, and the second terminal of the second three-pole linkage normally open switch serves as the second three-phase power output terminal of the second power supply control unit 122; the first terminal of the second normally closed switch serves as the third locking terminal of the second power supply control unit 122, and the second terminal of the second normally closed switch serves as the fourth locking terminal of the second power supply control unit 122; the first terminal of the second coil serves as the third power supply control terminal of the second power supply control unit 122, and the second terminal of the second coil serves as the fourth power supply control terminal of the second power supply control unit 122.

[0059] The energization state of the second coil controls the on / off state of the second-three-pole linkage normally open switch and the second normally closed switch. Specifically, when the second coil is energized, the second-three-pole linkage normally open switch is on and the second normally closed switch is off; when the second coil is de-energized, the second-three-pole linkage normally open switch is both on and off, and the second normally closed switch is on.

[0060] The power supply mode selection module 110 includes a selection switch; the selection switch includes a selection button, a first selection switch, and a second selection switch;

[0061] The selection button is mechanically connected to the knife switch of the first selection switch and the knife switch of the second selection switch; the first end of the first selection switch serves as the first end T1 of the power supply mode selection module 110, and the second end of the first selection switch serves as the second end T2 of the power supply mode selection module 110; the first end of the second selection switch serves as the third end T3 of the power supply mode selection module 110, and the second end of the second selection switch serves as the fourth end T4 of the power supply mode selection module 110; the selection button is used to control both the first and second selection switches to be off, or to control the first selection switch to be on and the second selection switch to be off, or to control the first selection switch to be off and the second selection switch to be on.

[0062] In this configuration, the neutral wire N1, live wire L1, and ground wire PE1 of the first power supply U1 are connected to the first terminal of the first three-pole normally open switch. The neutral wire N2, live wire L2, and ground wire PE2 of the second power supply U2 are connected to the first terminal of the second three-pole normally open switch. The second terminals of both the first and second three-pole normally open switches are connected to the load terminal 10. The live wire L2 of the second power supply U2 is connected to the first terminal of the first selector switch. The second terminal of the first selector switch is connected to the first terminal of the first normally closed switch. The second terminal of the first normally closed switch is connected to the first terminal of the second coil. The second terminal of the second coil is connected to the neutral wire N2 of the second power supply U2. The live wire L1 of the first power supply U1 is connected to the first terminal of the second selector switch. The second terminal of the second selector switch is connected to the first terminal of the second normally closed switch. The second terminal of the second normally closed switch is connected to the first terminal of the first coil. The second terminal of the first coil is connected to the neutral wire N1 of the first power supply U1.

[0063] Based on the above connection relationship, the working principle of the dual power supply interlock control circuit is explained as follows: When the power supply mode selection module 110 is in the no power supply position, the first selection switch and the second selection switch are both disconnected by the selection button. At this time, the electrical energy input to the second coil through the first normally closed switch is zero, and the electrical energy input to the first coil through the second normally closed switch is zero, so that the first coil and the second coil are both de-energized. The first three-pole linkage normally open switch and the second three-pole linkage normally open switch are both in the open state, that is, neither the first power supply U1 nor the second power supply U2 can output electrical energy to the load terminal 10.

[0064] When the power supply mode selection module 110 is in the first power supply position, the first selection switch is turned on and the second selection switch is turned off by the selection button. At this time, the electrical energy input to the second coil through the first normally closed switch is zero, and the electrical energy input to the first coil through the second normally closed switch is not zero, so that the first coil is energized and the second coil is de-energized. The first three-pole linkage normally open switch is in the on state and the second three-pole linkage normally open switch is in the off state, that is, the first power supply U1 outputs electrical energy to the load terminal 10.

[0065] When the power supply mode selection module 110 is in the second power supply position, the first selection switch is turned off and the second selection switch is turned on by controlling the selection button. At this time, the electrical energy input to the second coil through the first normally closed switch is not zero, and the electrical energy input to the first coil through the second normally closed switch is zero, so that the second coil is energized and the first coil is de-energized. The second three-pole linkage normally open switch is in the on state and the first three-pole linkage normally open switch is in the off state, that is, the second power supply U2 outputs electrical energy to the load terminal 10.

[0066] Based on the above embodiments, optionally, the first power source U1 includes a generator. The second power source U2 includes mains power.

[0067] This utility model embodiment also provides a dual power supply system, which includes the dual power supply interlock control circuit provided in any embodiment of this utility model. Therefore, the dual power supply system has the beneficial effects of the dual power supply interlock control circuit provided in any embodiment of this utility model, which will not be described in detail here.

[0068] This utility model embodiment also provides a remote control cockpit, which includes the dual power supply interlock control circuit provided in any embodiment of this utility model. Therefore, the remote control cockpit has the beneficial effects of the dual power supply interlock control circuit provided in any embodiment of this utility model, which will not be described in detail here.

[0069] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0070] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A dual-power interlock control circuit, characterized in that, Includes a power supply mode selection module and a power supply control module; The neutral, live, and ground wires of the first power supply are connected to the first power supply input terminal of the power supply control module, the neutral, live, and ground wires of the second power supply are connected to the second power supply input terminal of the power supply control module, and the power supply output terminal of the power supply control module is connected to the load terminal. The live wire of the second power supply is connected to the first terminal of the power supply mode selection module, the second terminal of the power supply mode selection module is connected to the first interlock input terminal of the power supply control module, the first interlock output terminal of the power supply control module is connected to the second power supply control input terminal of the power supply control module, and the second power supply control output terminal of the power supply control module is connected to the neutral wire of the second power supply. The live wire of the first power supply is connected to the third terminal of the power supply mode selection module, the fourth terminal of the power supply mode selection module is connected to the second interlock input terminal of the power supply control module, the second interlock output terminal of the power supply control module is connected to the first power supply control input terminal of the power supply control module, and the first power supply control output terminal of the power supply control module is connected to the neutral wire of the first power supply.

2. The dual-power interlock control circuit according to claim 1, characterized in that, The power supply control module includes a first power supply control unit and a second power supply control unit; The first three-phase power input terminal of the first power supply control unit serves as the first power supply input terminal of the power supply control module, and the second three-phase power input terminal of the second power supply control unit serves as the second power supply input terminal of the power supply control module. The first three-phase power output terminal of the first power supply control unit and the second three-phase power output terminal of the second power supply control unit are connected and serve as the power supply output terminal of the power supply control module. The first locking terminal of the first power supply control unit serves as the first interlock input terminal of the power supply control module, the second locking terminal of the first power supply control unit serves as the first interlock output terminal of the power supply control module, the first power supply control terminal of the first power supply control unit serves as the first power supply control input terminal of the power supply control module, and the second power supply control terminal of the first power supply control unit serves as the first power supply control output terminal of the power supply control module. The third locking terminal of the second power supply control unit serves as the second interlock input terminal of the power supply control module, the fourth locking terminal of the second power supply control unit serves as the second interlock output terminal of the power supply control module, the third power supply control terminal of the second power supply control unit serves as the second power supply control input terminal of the power supply control module, and the fourth power supply control terminal of the second power supply control unit serves as the second power supply control output terminal of the power supply control module.

3. The dual-power interlock control circuit according to claim 2, characterized in that, The first power supply control unit includes a first contactor; The first contactor includes a first three-pole normally open switch, a first normally closed switch, and a first coil; The first end of the first three-pole linkage normally open switch serves as the first three-phase power input terminal of the first power supply control unit, and the second end of the first three-pole linkage normally open switch serves as the first three-phase power output terminal of the first power supply control unit. The first end of the first normally closed switch serves as the first locking end of the first power supply control unit, and the second end of the first normally closed switch serves as the second locking end of the first power supply control unit. The first end of the first coil serves as the first power supply control terminal of the first power supply control unit, and the second end of the first coil serves as the second power supply control terminal of the first power supply control unit.

4. The dual-power interlock control circuit according to claim 2, characterized in that, The second power supply control unit includes a second contactor; The second contactor includes a second three-pole linkage normally open switch, a second normally closed switch, and a second coil; The first end of the second three-pole linkage normally open switch serves as the second three-phase power input terminal of the second power supply control unit, and the second end of the second three-pole linkage normally open switch serves as the second three-phase power output terminal of the second power supply control unit. The first end of the second normally closed switch serves as the third locking end of the second power supply control unit, and the second end of the second normally closed switch serves as the fourth locking end of the second power supply control unit. The first end of the second coil serves as the third power supply control terminal of the second power supply control unit, and the second end of the second coil serves as the fourth power supply control terminal of the second power supply control unit.

5. The dual-power interlock control circuit according to claim 1, characterized in that, The power supply mode selection module includes a selection switch; The selection switch includes a selection button, a first selection switch, and a second selection switch; The selection button is mechanically connected to the knife switch of the first selection switch and the knife switch of the second selection switch; The first end of the first selection switch serves as the first end of the power supply mode selection module, and the second end of the first selection switch serves as the second end of the power supply mode selection module. The first end of the second selection switch serves as the third end of the power supply mode selection module, and the second end of the second selection switch serves as the fourth end of the power supply mode selection module. The selection button is used to control both the first selection switch and the second selection switch to be off, or to control the first selection switch to be on and the second selection switch to be off, or to control the first selection switch to be off and the second selection switch to be on.

6. The dual-power interlock control circuit according to claim 1, characterized in that, The first power source includes a generator.

7. The dual-power interlock control circuit according to claim 1, characterized in that, The second power source includes mains power.

8. A dual power supply system, characterized in that, Includes the dual-power interlock control circuit as described in any one of claims 1-7.

9. A remote-controlled cockpit, characterized in that, Includes the dual-power interlock control circuit as described in any one of claims 1-7.

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