A circuit for centralized control of power supply, a train and a power supply method

Abstract

The application provides a centralized control power supply circuit, a train and a power supply method, and relates to the technical field of power supply control, and aims at solving the problem of the low reliability of the power supply control of the train. The centralized control power supply circuit comprises a first relay unit, a first power supply unit, a self-resetting pulse switch, a third air switch, a second relay unit and a second power supply unit which are sequentially connected. When the third air switch is closed, the self-resetting pulse switch selects the power-on or power-off state, and the first relay unit and the second relay unit control the corresponding first power supply unit and the second power supply unit to supply power or cut off power for the connected load.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicle power supply, and particularly relates to a centralized control power supply circuit, a train and a power supply method. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] At present, vehicles such as 25T passenger cars and power concentration motor trains are all single-vehicle power supply when power supply, and train power supply and power-off need to be operated one by one for each vehicle, which is complicated.

[0004] In the prior art, although there is a related technology for centralized power supply through marshalling, the above-mentioned scheme is relatively complex in control logic, and once there is a detection fault in a certain link, the entire control logic will be difficult to implement, thereby affecting the centralized power supply of the entire motor train. SUMMARY

[0005] In order to solve the above problems, the present application proposes a centralized control power supply circuit, which can realize power supply and power-off of the entire train and is simple to operate.

[0006] According to some embodiments, the present application adopts the following technical scheme:

[0007] In a first aspect, a centralized control power supply circuit is disclosed, comprising:

[0008] A first relay unit and a first power supply unit connected in sequence are arranged in a first vehicle;

[0009] A self-resetting pulse switch, a third air switch, a second relay unit and a second power supply unit connected in sequence are arranged in a second vehicle;

[0010] When the third air switch is closed, the self-resetting pulse switch selects the power-on or power-off state, and the first relay unit and the second relay unit control the corresponding first power supply unit and the second power supply unit to supply power or cut off power to the connected load, respectively.

[0011] As a further technical solution, the circuit structures of the first power supply unit and the second power supply unit are the same.

[0012] As a further technical solution, any power supply unit comprises a first air switch and a second air switch connected in sequence, the first air switch is connected to a power supply end, the second air switch is connected to a load end, and a connecting line between the first air switch and the second air switch is connected to a corresponding relay unit.

[0013] As a further technical solution, the first relay unit and the second relay unit have the same circuit structure.

[0014] As a further technical solution, any relay unit comprises a control knob switch, four switches, and corresponding coils, the control knob switch is connected in parallel to the four-way circuit; the parallel four-way circuit is connected to the positive pole of the power supply end.

[0015] As a further technical solution, in the parallel four-way circuit, the first switch, the second switch, and the third coil are connected in series on the first circuit, the third switch is connected in parallel to the first switch; the third coil is connected on the third circuit; the fourth circuit supplies power to the display device.

[0016] As a further technical solution, one end of the first coil and the second coil is connected to a connector through a branch box, and the other end of the first coil and the second coil is connected to another connector through a unidirectional diode.

[0017] As a further technical solution, the power-on end and the power-off end of the self-resetting pulse switch are connected to the circuits where the first coil and the second coil are located.

[0018] In the second aspect, a centralized control power supply method is disclosed, which supplies power in a centralized control mode, and the first vehicle and the second vehicle are in an on state with the power supply end; the method comprises:

[0019] The power-on step: when the self-resetting pulse switch is in a power-on state, the first relay unit and the second relay unit connected to the power supply end work, connecting the power supply end and the load end, and supplying power to the load end;

[0020] The power-off step: when the self-resetting pulse switch is in a power-off state, the first relay unit and the second relay unit connected to the power supply end work, disconnecting the power supply end and the load end, and disconnecting the power supply to the load end.

[0021] As a further technical solution, in the power-on step, when the self-resetting pulse switch is in a power-on state, the first coil in the first relay unit and the second relay unit is powered, the second coil is not powered, the third coil is powered, the fourth coil is powered, and the positive pole and the negative pole of the power supply end are connected to the two ends of the relay unit.

[0022] As a further technical solution, in the power-off step, the first coil in the first relay unit and the second relay unit is powered, the second coil is powered, the third coil is not powered, and the fourth coil is not powered.

[0023] In the third aspect, a train is disclosed, comprising a first vehicle and a second vehicle, and the train is installed with the above-mentioned centralized control power supply circuit.

[0024] Compared with the prior art, the application has the beneficial effects of:

[0025] The application controls the power supply of different vehicles through the centralized control of the power supply circuit, including power-on control and power-off control, thereby avoiding the problems of complicated operation and inaccurate control caused by separate control of the power supply.

[0026] In the application, the power-on control and power-off control for each vehicle are realized by using a hardware circuit, which has high reliability and avoids the fault problems caused by pure software control.

[0027] The advantages of the additional aspects of the application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the application.

[0028] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are used for detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings constituting a part of the specification of the application are used to provide further understanding of the application, and the schematic embodiments of the application and the description thereof are used to explain the application, and do not constitute improper limitation on the application.

[0030] Figure 1 It is a schematic diagram of the overall circuit structure of the application. DETAILED DESCRIPTION

[0031] The application will be further described below in combination with the drawings and embodiments.

[0032] It should be pointed out that the following detailed description is all exemplary, and is intended to provide further description of the application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the application belongs.

[0033] It should be noted that the terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or combination thereof.

[0034] Embodiment one:

[0035] In the embodiment, the motor train unit is taken as an example for illustration, but it does not mean that the power supply control circuit provided by the application can only be applied to the power supply control of the motor train unit. It can also be applied to the power supply of other vehicles according to different power supply objects.

[0036] Referring to FIG. 1, Figure 1 In the embodiment, the power supply control circuit is disclosed, which comprises a first relay unit, a first power supply unit, a self-resetting pulse switch, a third air switch, a second relay unit and a second power supply unit.

[0037] The self-resetting pulse switch, the third air switch, the second relay unit and the second power supply unit are sequentially connected.

[0038] When the third air switch is closed, the self-resetting pulse switch selects the power-on or power-off state, and the first relay unit and the second relay unit control the corresponding first power supply unit and second power supply unit to supply power or cut off power to the connected load, respectively.

[0039] It should be noted that if there are multiple vehicles, the circuits on the vehicles other than the first vehicle and the second vehicle are the same as those in the first vehicle.

[0040] The circuit structures of the first power supply unit and the second power supply unit are the same.

[0041] Specifically, any power supply unit comprises a first air switch and a second air switch connected in sequence, the first air switch is connected to a power supply end, the second air switch is connected to a load end, and a connecting line between the first air switch and the second air switch is connected to a corresponding relay unit.

[0042] The second air switch is a redundant air switch, and when the relay fails, the second air switch can short-circuit the relay control unit to directly supply power to the load.

[0043] The circuit structures of the first relay unit and the second relay unit are the same.

[0044] Specifically, any relay unit comprises a control knob switch, four switches and a corresponding coil, the control knob switch is connected to four parallel lines, and the four parallel lines are connected to a positive electrode of a power supply end.

[0045] In the four parallel lines, a first switch, a second switch and a third coil are connected in series on a first line, a third switch is connected in parallel to the first switch on the first line, a fourth coil is connected on a third line, and a fourth line is used to supply power to a display device.

[0046] The first coil and the second coil are connected to one connector through a branch box at one end, and the other end of the first coil and the second coil is connected to another connector through a unidirectional diode.

[0047] The connector is used for expanding the number of vehicles, and when 3 or more vehicles are connected, more vehicles of the same structure are connected through the connector.

[0048] The power-on end and the power-off end of the self-resetting pulse switch are connected to lines where the first coil and the second coil are located, respectively.

[0049] The power supply button is centrally controlled, power supply and power-off of the whole train are realized, operation is simple, and the risk of human error is reduced.

[0050] In the technical scheme of the embodiment, the centrally controlled power supply circuit is provided with a self-resetting pulse switch, a control knob switch, a relay and an air switch. The control circuit is arranged in a device cabinet of the vehicle, and the power supply button is arranged in a device cabinet of a certain vehicle or a certain number of vehicles of the train. The control knob switch is arranged in each vehicle of the train, and each vehicle can select three power supply modes, i.e., "central control", "stop" and "single vehicle". When the vehicle selects the "central control" mode, the vehicle can control power supply of the vehicle through the self-resetting pulse switch; when the vehicle selects the "single vehicle" mode, power supply of the vehicle is not controlled by other vehicles; and when the vehicle selects the "stop" mode, the vehicle is powered off.

[0051] Specifically, a knob switch is arranged, and the switch has three gears, i.e., "central control", "stop" and "single vehicle". Different power supply modes are selected through the knob switch.

[0052] The self-resetting pulse switch has two modes, i.e., "power on" and "power off". When the "power on" mode is selected, power supply of the vehicle and the vehicle arranged in the "central control" mode is controlled. When the "power off" mode is selected, power off of the vehicle and the vehicle arranged in the "central control" mode is controlled.

[0053] Embodiment two:

[0054] Based on the system of embodiment one, a specific centrally controlled power supply method is disclosed, which comprises the following steps.

[0055] In a second aspect, a centrally controlled power supply method is disclosed. In the centrally controlled mode, the first vehicle and the second vehicle are in an on state with the power supply end. The method comprises the following steps.

[0056] The power-on step: when the self-resetting pulse switch is in the power-on state, the first relay unit and the second relay unit connected with the power supply end work, the power supply end and the load end are connected, and the load end is powered.

[0057] The power-off step: when the self-resetting pulse switch is in the power-off state, the first relay unit and the second relay unit connected with the power supply end work, the power supply end and the load end are disconnected, and power supply of the load end is disconnected.

[0058] In the power-on step, when the self-resetting pulse switch is in the power-on state, the first coil in the first relay unit and the second relay unit is powered, the second coil is not powered, the third coil is powered, the fourth coil is powered, and the positive terminal and the negative terminal of the power supply are respectively connected to the two ends of the relay unit.

[0059] In the power-off step, the first coil in the first relay unit and the second relay unit is powered, the second coil is powered, the third coil is not powered, and the fourth coil is not powered.

[0060] The centralized control circuit is controlled by the air switch 3 of the vehicle 2 to supply power (the air switch 3 is closed to perform centralized control), and a centralized control self-resetting pulse switch is arranged. The vehicle 1 and the vehicle 2 are respectively provided with centralized control relays KA1, KA2, KA3, KA4, control knob switches SA1, centralized control indicator lamps, air switches 1, and emergency air switches 2.

[0061] When the control knob switch SA1 of the vehicle 1 and the vehicle 2 selects “centralized control”, the 1 point and the 2 point, the 3 point and the 4 point, and the 7 point and the 8 point of the control knob switch SA1 are connected, the microcomputer displays the power supply “centralized control”, the air switch 3 of the vehicle 2 is closed, the air switch 1 of the vehicle 1 and the vehicle 2 is closed, and the air switch 2 is opened.

[0062] The air switch 2 and the contact of the control relay are in a parallel structure, when the relay fails, the second air switch can short-circuit the relay control unit to directly supply power to the load. The air switch 2 should be opened in normal work.

[0063] When the self-resetting pulse switch selects “power-on”, the line number 1 positive is connected to the power supply positive through the air switch 3, the line number 1 positive is connected to the line number 2 through the “power-on” position of the self-resetting switch, the line number 2 is connected to the power supply positive, the relay KA1 coil of the vehicle 1 and the vehicle 2 is powered, the normally open contact of the relay KA1 is closed, the relay KA2 coil is not powered, the normally closed contact of the relay KA2 is closed, the relay KA3 coil is powered, the normally open contact of the relay KA3 is closed, and the centralized control indicator lamp is lit. After the self-resetting pulse switch is self-resetting, the KA3 relay is self-locked to supply power, the KA4 contact and the air switch 2 are in parallel, and they are all connected to the power supply to control the load. The relay KA4 coil is powered, the normally open contact of the relay KA4 is closed, and the vehicle 1 and the vehicle 2 are powered.

[0064] When the self-resetting pulse switch selects “power-off”, the line number 1 positive is connected to the line number 3 through the “power-off” position of the self-resetting switch, the line number 3 is connected to the power supply positive, the relay KA2 coil of the vehicle 1 and the vehicle 2 is powered, the normally closed contact of the relay KA2 is opened, the self-locking circuit of the relay KA3 is powered off, the relay KA3 coil is not powered, and the normally open contact of the relay KA3 is opened. The relay KA4 coil is not powered, the normally open contact of the relay KA4 is powered off, and the vehicle 1 and the vehicle 2 are powered off.

[0065] Example Three:

[0066] In the present embodiment, a train is disclosed, which comprises a first vehicle and a second vehicle, and the train is provided with the circuit for centralized control and power supply in the first embodiment and is powered according to the method in the second embodiment.

[0067] Those skilled in the art will appreciate that embodiments of the present application can be provided as methods, systems, or computer program products. Accordingly, the present application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application can be embodied in the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk memory, CD-ROMs, optical storage media, etc.) having computer usable program code embodied therein.

[0068] The present application is described in reference to the flowcharts and / or block diagrams of the methods, apparatus (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus produce the functions specified in the flowcharts and / or block diagrams of the methods, apparatus (systems), and computer program products. Figure 1 one or more flows and / or blocks Figure 1 means for performing the function specified by the flow or flows and / or block or blocks.

[0069] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, so that the instructions stored in the computer readable memory produce an article of manufacture including the instruction means that implement the functions specified in the flowcharts and / or block diagrams of the methods, apparatus (systems), and computer program products. Figure 1 one or more flows and / or blocks Figure 1 means for performing the function specified by the flow or flows and / or block or blocks.

[0070] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process so that the instructions executed on the computer or other programmable apparatus provide the functions specified in the flowcharts and / or block diagrams of the methods, apparatus (systems), and computer program products. Figure 1 one or more flows and / or blocks Figure 1 means for performing the function specified by the flow or flows and / or block or blocks.

[0071] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0072] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A circuit for centrally controlling the supply of power, characterized in that The application relates to a centralized control power supply circuit for a train. The application comprises: a first relay unit, a first power supply unit, which are sequentially connected and arranged in a first vehicle; A self-resetting pulse switch, a third air switch, a second relay unit and a second power supply unit, which are sequentially connected and arranged in a second vehicle; When the third air switch is closed, the self-resetting pulse switch selects a power-on or power-off state, and the first relay unit and the second relay unit control the corresponding first power supply unit and the second power supply unit to supply power or cut off power for the connected load respectively; The power-on end and the power-off end of the self-resetting pulse switch are connected to the lines where the first coil and the second coil are located respectively; When the self-resetting pulse switch is in the power-on state, the first coil in the first relay unit and the second relay unit is powered, the second coil is not powered, the third coil is powered, the fourth coil is powered, and the positive end and the negative end of the power supply end are connected to the two ends of the relay unit respectively.

2. A centralized control power supply circuit as claimed in claim 1, characterized in that The circuit structures of the first power supply unit and the second power supply unit are the same; Any power supply unit comprises a first air switch and a second air switch which are sequentially connected, the first air switch is connected to a power supply end, and the second air switch is connected to a load end; and a connecting line between the first air switch and the second air switch is connected to a corresponding relay unit.

3. A centralized control power supply circuit as claimed in claim 1, characterized in that The circuit structures of the first relay unit and the second relay unit are the same; Any relay unit comprises a control knob switch, four switches and a corresponding coil; the control knob switch is connected to four parallel lines; and the four parallel lines are connected to the positive end of the power supply end.

4. A master control power supply circuit as claimed in claim 3, characterized in that In the four parallel lines, the first switch, the second switch and the third coil are connected in series on a first line, the third switch is connected in parallel on the first switch on a second line, the fourth coil is connected on a third line, and a fourth line is used for supplying power to a display device.

5. A centralized control power supply circuit as claimed in claim 3, characterized in that One end of the first coil and the second coil is connected to a connector through a branch box respectively, and the other end of the first coil and the second coil is connected to another connector through a unidirectional diode respectively.

6. A method of powering a circuit controlled by a control according to any one of claims 1 to 5, characterized in that, In the centralized control mode, the first vehicle and the second vehicle are in the connected state with the power supply end; the application comprises the following steps: The power-on step: when the self-resetting pulse switch is in the power-on state, the first relay unit and the second relay unit connected to the power supply end work, the power supply end and the load end are connected, and power is supplied to the load end; The power-off step: when the self-resetting pulse switch is in the power-off state, the first relay unit and the second relay unit connected to the power supply end work, the power supply end and the load end are disconnected, and power supply to the load end is disconnected.

7. The power supply method of claim 6, wherein the power is turned off. In the steps, the first coil in the first relay unit and the second relay unit is powered, the second coil is powered, the third coil is not powered, and the fourth coil is not powered.

8. A train characterised by The application comprises a first vehicle and a second vehicle, and the train is provided with the centralized control power supply circuit according to any one of claims 1-5.

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