Power supply and distribution system, method and vehicle

Abstract

The embodiment of the present application provides a power supply and distribution system, method and vehicle. The power supply and distribution system is arranged in a vehicle after multiple carriages are formed, and the system includes: a main power generation module for providing high-voltage operation power distribution for each carriage, an auxiliary inverter module for converting the high-voltage operation power distribution of each carriage into low-voltage operation power distribution and / or low-voltage life power distribution, an auxiliary power generation module for providing low-voltage operation power distribution and / or low-voltage life power distribution for each carriage, a contactor K5 and a controller, and the controller is used to control the working state of the contactor K5, the main power generation module, the auxiliary inverter module and the auxiliary power generation module. By controlling the working state of the main power generation module, the auxiliary inverter module, the auxiliary power generation module and the contactor K5 to switch the power supply and distribution mode, the reliability and redundancy of the power supply and distribution of the vehicle after formation are improved, and the power distribution quality and the comfort of the operators on the vehicle are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of vehicle power supply and distribution, and in particular to a power supply and distribution system, method and vehicle. Background Art

[0002] With the rapid development of my country's railway maintenance industry, the power supply and distribution system of engineering vehicles has become an important part of engineering vehicles because it supplies power for the vehicle's operating load and living load, and is related to the operating power distribution quality and the comfort of the operators on board.

[0003] In rail grinding operations, there are currently two main drive modes for the grinding heads of rail grinding vehicles: electric drive and hydraulic drive. Electric drive dominates the market due to its high control accuracy and fast speed regulation, so the power source of the grinding device is still mainly power supply. At the same time, the existing grinding vehicles can be divided into 8-head grinding vehicles, 10-head grinding vehicles, 16-head grinding vehicles, 20-head grinding vehicles, 48-head grinding vehicles, and 96-head grinding vehicles according to the number of grinding heads. However, in actual operations, in order to improve the grinding efficiency, a connection method is usually adopted. For example, two 8-head grinding vehicles can be connected to form a 16-head grinding vehicle, and two 10-head grinding vehicles can be connected to form a 20-head grinding vehicle. This two-section or even more-section vehicle marshaling method is more flexible and convenient.

[0004] At present, due to the evenly distributed number of grinding heads on the two cars, the power sources and distribution systems of the two cars are relatively independent. This makes it impossible to share power supply and distribution between the two cars after they are marshaled and run, and the redundancy and reliability of the overall power supply and distribution system are poor. Summary of the invention

[0005] In order to solve one of the above-mentioned technical defects, an embodiment of the present application provides a power supply and distribution system, method and vehicle.

[0006] According to a first aspect of an embodiment of the present application, a power supply and distribution system is provided, wherein the power supply and distribution system is arranged in a vehicle after a plurality of carriages are formed, wherein the system comprises: a main power generation module, an auxiliary converter module, an auxiliary power generation module, a contactor K5 and a controller, wherein each carriage is provided with a main power generation module, an auxiliary converter module and an auxiliary power generation module;

[0007] The main power generation module is used to provide high voltage operation power distribution for each carriage;

[0008] The auxiliary converter module is used to convert the high voltage operating power distribution of each carriage into low voltage operating power distribution and / or low voltage living power distribution;

[0009] The auxiliary power generation module is used to provide low-voltage operation power distribution and / or low-voltage living power distribution for each carriage respectively;

[0010] A contactor K5 is provided between the auxiliary power generation modules of two adjacent carriages, and the controller is used to control the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module.

[0011] According to a second aspect of an embodiment of the present application, a power supply and distribution method of the power supply and distribution system according to the first aspect of an embodiment of the present application is provided, the method comprising:

[0012] The controller obtains the power supply mode instruction sent by the user through the human-computer interaction module;

[0013] The controller controls the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module according to the power supply mode instruction to switch the power supply mode.

[0014] According to a third aspect of an embodiment of the present application, a vehicle is provided, the vehicle comprising a plurality of carriages coupled together and the power supply and distribution system according to the first aspect of an embodiment of the present application.

[0015] By adopting the power supply and distribution system and method provided in the embodiments of the present application, after the vehicles are formed, the power supply and distribution mode can be switched by controlling the working status of the main power generation module, the auxiliary converter module, the auxiliary power generation module and the contactor K5, thereby improving the reliability and redundancy of the power supply and distribution of the vehicles after formation, and ensuring the power distribution quality and the comfort of the operators on board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A schematic diagram of a power supply and distribution system provided in Example 1 of the present application;

[0018] Figure 2 A flow chart of a power supply and distribution method provided in Example 2 of the present application. DETAILED DESCRIPTION

[0019] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0020] Example 1

[0021] like Figure 1As shown, this embodiment provides a power supply and distribution system, which is arranged in a vehicle after a plurality of carriages are assembled. The system specifically comprises: a main power generation module, an auxiliary converter module, an auxiliary power generation module, a contactor K5 and a controller.

[0022] Specifically, each carriage is provided with a main power generation module, an auxiliary converter module and an auxiliary power generation module, wherein:

[0023] The main power generation module includes a main power source and a contactor K1. The main power source is connected to the high-voltage operating load through the contactor K1. The main power source can provide high-voltage power distribution for high-voltage operating loads related to grinding operations, such as providing AC440V / 60Hz power distribution for grinding, dust collecting fans and other operations. In this embodiment, the generator inside the main power source is driven by the coaxial rotation of the engines on each section to generate electricity. After the generator is powered, the controller controls the contactor K1 to close to achieve high-voltage power distribution.

[0024] The auxiliary AC module includes an auxiliary converter, a contactor K2 and a contactor K3. The auxiliary converter can be connected to the low-voltage operating load through the contactor K2, and can be connected to the life load through the contactor K3. The auxiliary converter can convert the high-voltage power supply of the main power generation source into a low-voltage power supply, for example, converting the AC440V / 60Hz power supply into an AC380V / 50Hz power supply, which is used for power distribution of life loads (air conditioners, 220V sockets, heaters, etc.) and / or low voltage (screw conveyors, high and low pressure water pumps, etc.) power distribution.

[0025] The auxiliary power generation module includes an auxiliary power generation source and a contactor K4. The auxiliary power generation source is connected to the life load through the contactor K4, and is connected to the low-voltage operating load through the contactor K4 and the contactor K3. The difference between the auxiliary power generation module and the auxiliary converter module is that the auxiliary power generation module can directly provide low-voltage power to power the life load or the low-voltage operating load, while the auxiliary converter module converts the high-voltage power output by the main power generation module into a low-voltage power before powering the life load or the low-voltage operating load.

[0026] In this embodiment, the auxiliary power source can also be replaced by a warehouse external plug, which is used to plug into a warehouse external socket to draw power. The warehouse external plug is connected to the living load through a contactor K4. The warehouse external plug is connected to the low-voltage operating load through contactors K4 and K3.

[0027] A contactor K5 is provided between the auxiliary power generation modules of two adjacent carriages. The controller can control the on-off status of contactor K5, contactor K1, contactor K2, contactor K3 and contactor K4 to control the status of the main power generation source, auxiliary converter and auxiliary power generation source in the power supply and distribution system, thereby realizing switching between different power supply modes.

[0028] Furthermore, the power supply and distribution system proposed in this embodiment may also be provided with a human-computer interaction module, which may be implemented by a display, and its operation mode may be remote sensing operation or touch screen operation, etc., which is not specifically limited in this embodiment. All power supply modes may be displayed on the display interface of the human-computer interaction module for the user to select, or the user may directly input the relevant power supply mode instructions through text, code or voice, etc. The controller may control the on-off state of contactor K5, contactor K1, contactor K2, contactor K3 and contactor K4 according to the power supply mode instruction selected or input by the user to control the state of the main power generation source, auxiliary converter and auxiliary power generation source being put into the power supply and distribution system, thereby realizing the switching between different power supply modes.

[0029] Example 2

[0030] like Figure 2 As shown, this embodiment provides a power supply and distribution method, which is implemented based on a power supply and distribution system. The power supply and distribution system can refer to the content recorded in embodiment 1, and this embodiment will not be repeated.

[0031] The power supply and distribution method comprises:

[0032] S101, the controller obtains a power supply mode instruction sent by the user through a human-computer interaction module;

[0033] S102, the controller controls the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module according to the power supply mode instruction to switch the power supply mode.

[0034] Specifically, the power supply and distribution method proposed in this embodiment includes five power supply modes, namely, the default power supply mode, the first auxiliary power supply mode, the second auxiliary power supply mode, the first maximum power supply mode and the second maximum power supply mode. Figure 1 As shown, car A and car B are marshaled. Among car A, A_K1, A_K2, A_K3, and A_K4 are contactor K1, contactor K2, contactor K3, and contactor K4 of car A respectively. Among car B, B_K1, B_K2, B_K3, and B_K4 are contactor K1, contactor K2, contactor K3, and contactor K4 of car B respectively. B_K5 is contactor K5. The power supply and distribution mode after car A and car B are marshaled will be described below.

[0035] (1) Default power supply mode

[0036] In this default power supply mode, the main power module of a single carriage provides high voltage for the single carriage, and the auxiliary AC module converts the high voltage of the main power module into low voltage. At this time, the on-off status of each contactor is as follows:

[0037] B_K5 is disconnected;

[0038] A_K1 is closed, A_K2 is closed, A_K3 is closed, and A_K4 is open;

[0039] B_K1 is closed, B_K2 is closed, B_K3 is closed, and B_K4 is open.

[0040] (2) First auxiliary power supply mode

[0041] In this first auxiliary power supply mode, the auxiliary power generation module of one car provides extended power supply to the other car. Since the main generator motor of the main power generation source of the main power generation module is a high-power device, it is noisy and has high fuel consumption. Considering the fuel cost, human comfort, and the fact that other electric equipment (emergency-related equipment) of the vehicle has no power after the main engine fails, it is necessary to provide backup power through the auxiliary power generation module. The auxiliary power generation module can be implemented by an independent auxiliary power generation source or an external warehouse socket. The external warehouse socket is mainly used by on-board operators to prepare or inspect the vehicle when the vehicle is parked in the warehouse.

[0042] For a two-carriage marshaling, the first auxiliary power supply mode includes two situations: the auxiliary power generation module of car A provides extended power to car B; and the auxiliary power generation module of car B provides extended power to car A.

[0043] When the auxiliary power generation module of vehicle A provides extended power to vehicle B, the on-off status of each contactor is as follows:

[0044] B_K5 is closed;

[0045] A_K1 is closed, A_K2 is open, A_K3 is closed, and A_K4 is closed;

[0046] B_K1 is closed, B_K2 is open, B_K3 is closed, and B_K4 is open.

[0047] When the auxiliary power generation module of vehicle B provides extended power to vehicle A, the on / off status of each contactor is as follows:

[0048] B_K5 is closed;

[0049] A_K1 is closed, A_K2 is open, A_K3 is closed, A_K4 is open;

[0050] B_K1 is closed, B_K2 is open, B_K3 is closed, and B_K4 is closed.

[0051] (3) Second auxiliary power supply mode

[0052] In the second auxiliary power supply mode, when two carriages are formed, only the main power generation module of a single carriage is started to achieve synchronous extended power supply for the two carriages. This also solves the problem of extended power supply between the two carriages when the auxiliary converter module of one of the two carriages fails.

[0053] For a two-carriage marshaling, the second auxiliary power supply mode includes two situations: the auxiliary converter module of car A provides extended power to car B, and the auxiliary converter module of car B provides extended power to car A.

[0054] When the auxiliary converter module of car A provides extended power supply to car B, the on-off status of each contactor is as follows:

[0055] B_K5 is closed;

[0056] A_K1 is closed, A_K2 is closed, A_K3 is closed, and A_K4 is open;

[0057] B_K1 is closed, B_K2 is open, B_K3 is closed, and B_K4 is open.

[0058] When the auxiliary converter module of car B provides extended power to car A, the on-off status of each contactor is as follows:

[0059] B_K5 is closed;

[0060] A_K1 is closed, A_K2 is open, A_K3 is closed, A_K4 is open,

[0061] B_K1 is closed, B_K2 is closed, B_K3 is closed, and B_K4 is open.

[0062] (4) First Maximum Power Supply Mode

[0063] In the first maximum power supply mode, the auxiliary converter module of a single carriage supplies low voltage power to the low voltage operation load of the single carriage, and the auxiliary power generation module of a single carriage supplies low voltage power to the life load of the single carriage. At this time, the on-off status of each contactor is as follows:

[0064] B_K5 is disconnected;

[0065] A_K1 is closed, A_K2 is closed, A_K3 is open, and A_K4 is closed;

[0066] B_K1 is closed, B_K2 is closed, B_K3 is open, and B_K4 is closed.

[0067] (5) Second maximum power supply mode

[0068] In the second maximum power supply mode, the auxiliary converter module of a single car supplies low voltage power to the low voltage operating load of a single car, and the auxiliary power generation module of one of the cars supplies low voltage power to the living loads of two cars.

[0069] For a two-carriage formation, the second maximum power supply mode includes two situations: the auxiliary power generation module of car A supplies low-voltage power to the living loads of cars A and B, and the auxiliary power generation module of car B supplies low-voltage power to the living loads of cars A and B.

[0070] When the auxiliary power generation module of vehicle A supplies low voltage power to the life loads of vehicles A and B, the on-off status of each contactor is as follows:

[0071] B_K5 is closed;

[0072] A_K1 is closed, A_K2 is closed, A_K3 is open, and A_K4 is closed.

[0073] B_K1 is closed, B_K2 is closed, B_K3 is open, and B_K4 is open.

[0074] When the auxiliary power generation module of vehicle B supplies low voltage power to the life loads of vehicles A and B, the on-off status of each contactor is as follows:

[0075] B_K5 is closed;

[0076] A_K1 is closed, A_K2 is closed, A_K3 is open, and A_K4 is open.

[0077] B_K1 is closed, B_K2 is closed, B_K3 is open, and B_K4 is closed.

[0078] The power supply and distribution method provided in this embodiment can switch the power supply and distribution mode by controlling the working status of the main power generation module, the auxiliary converter module, the auxiliary power generation module and the contactor K5 after the vehicle is formed, thereby improving the reliability and redundancy of the power supply and distribution of the vehicle after formation, and ensuring the power distribution quality and the comfort of the operators on the vehicle.

[0079] In addition, in the present embodiment, during the power supply mode switching process, the on / off state of each contactor must be detected first, and the next power supply mode switching operation can only be performed when all contactors are in the off state.

[0080] This embodiment also provides a vehicle, including a plurality of carriages connected in a marshaling manner and a power supply and distribution system as provided in any of the above contents.

[0081] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiments of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0082] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, 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 device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0083] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0084] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0085] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0086] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0087] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0088] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0089] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A power supply and distribution system, characterized in that: The power supply and distribution system is arranged in a vehicle after a plurality of carriages are formed, and the system comprises: a main power generation module, an auxiliary converter module, an auxiliary power generation module, a contactor K5 and a controller, and each carriage is provided with a main power generation module, an auxiliary converter module and an auxiliary power generation module; The main power generation module is used to provide high voltage operation power distribution for each carriage; The auxiliary converter module is used to convert the high voltage operating power distribution of each carriage into low voltage operating power distribution and / or low voltage living power distribution; The auxiliary power generation module is used to provide low-voltage operation power distribution and / or low-voltage living power distribution for each carriage respectively; A contactor K5 is provided between the auxiliary power generation modules of two adjacent carriages, and the controller is used to control the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module; The main power generation module includes a main power generation source and a contactor K1, the main power generation source is connected to the high voltage operating load through the contactor K1, and the controller is used to control the working state of the contactor K1; The auxiliary converter module includes an auxiliary converter, a contactor K2 and a contactor K3. The auxiliary converter is connected to a low-voltage operating load and a living load through the contactor K2 and the contactor K3, respectively. The controller is used to control the working states of the contactor K2 and the contactor K3. The auxiliary power generation module includes an auxiliary power generation source and a contactor K4. The auxiliary power generation source is connected to the living load through the contactor K4. The auxiliary power generation source is connected to the low-voltage operating load through the contactor K4 and the contactor K3. The controller is used to control the working state of the contactor K4.

2. The system according to claim 1, characterized in that The system also includes a human-computer interaction module, which is used to send the power supply mode instruction selected by the user to the controller, so that the controller controls the working status of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module according to the power supply mode instruction.

3. A power supply and distribution method of a power supply and distribution system according to claim 1 or 2, characterized in that: The method comprises: The controller obtains the power supply mode instruction sent by the user through the human-computer interaction module; The controller controls the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module according to the power supply mode instruction to switch the power supply mode.

4. The method according to claim 3, characterized in that When the power supply mode is the default power supply mode, the process in which the controller controls the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module to switch the power supply mode includes: Connect the main power generation module in each carriage with the high voltage operating load, and the auxiliary converter module with the low voltage operating load and life load; Cut off the connection between the auxiliary power generation module in each carriage and the low-voltage operating load and living load; Cut off the contactor K5 between the auxiliary power generation modules of two adjacent carriages.

5. The method according to claim 3, characterized in that: When the power supply mode is the first auxiliary power supply mode, the process in which the controller controls the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module to switch the power supply mode includes: Connect the main power generation module in each carriage to the high voltage operating load; Connecting the connection between the auxiliary power generation module in the first car of the two adjacent cars and the low-voltage operating load and the living load, and disconnecting the connection between the auxiliary converter module in the first car and the low-voltage operating load and the living load; Cut off the connection between the auxiliary power generation module in the second carriage of the two adjacent carriages and the low-voltage operating load and the living load, and the connection between the auxiliary converter module and the low-voltage operating load and the living load; The contactor K5 between the auxiliary power generation modules of two adjacent carriages is connected to connect the auxiliary power generation module in the first carriage with the low-voltage operating load and living load in the second carriage.

6. The method according to claim 3, characterized in that When the power supply mode is the second auxiliary power supply mode, the process in which the controller controls the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module to switch the power supply mode includes: Connect the main power generation module in each carriage to the high voltage operating load; Connecting the connection between the auxiliary converter module in the first carriage of two adjacent carriages and the low-voltage operating load and the living load, and disconnecting the connection between the auxiliary power generation module in the first carriage and the low-voltage operating load and the living load; Cut off the connection between the auxiliary power generation module in the second carriage of the two adjacent carriages and the low-voltage operating load and the living load, and the connection between the auxiliary converter module and the low-voltage operating load and the living load; The contactor K5 between the auxiliary power generation modules of two adjacent carriages is connected to connect the auxiliary converter module in the first carriage with the low-voltage operating load and living load in the second carriage.

7. The method according to claim 3, characterized in that When the power supply mode is the first maximum power supply mode, the process in which the controller controls the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module to switch the power supply mode includes: Connect the main power generation module in each carriage with the high voltage operating load, the auxiliary converter module with the low voltage operating load, and the auxiliary power generation module with the living load; Cut off the connection between the auxiliary converter module and the life load, and the connection between the auxiliary power generation module and the low-voltage operating load in each carriage; Cut off the contactor K5 between the auxiliary power generation modules of two adjacent carriages.

8. The method according to claim 3, characterized in that When the power supply mode is the second maximum power supply mode, the process in which the controller controls the working states of the contactor K5, the main power generation module, the auxiliary converter module and the auxiliary power generation module to switch the power supply mode includes: Connect the main power generation module in each carriage with the high voltage operating load, and the auxiliary converter module with the low voltage operating load; Connecting the auxiliary power generation module in the first carriage of two adjacent carriages to the living load; Cut off the connection between the auxiliary power generation module in the first compartment of the adjacent connected compartments and the low-voltage operating load, and the connection between the auxiliary converter module and the living load; Cut off the connection between the auxiliary power generation module in the second carriage of two adjacent carriages and the low-voltage operating load and the living load; The contactor K5 between the auxiliary power generation modules of two adjacent carriages is connected to connect the auxiliary power generation module in the first carriage to the life load in the second carriage.

9. The method according to claim 3, characterized in that: The method further comprises: The controller detects the on / off states of the contactor K5, the main power generation module, the auxiliary conversion module and the auxiliary power generation module before obtaining the power supply mode instruction and controlling the working states of the contactor K5, the main power generation module, the auxiliary conversion module and the auxiliary power generation module according to the power supply mode instruction to switch the power supply mode; When the on / off states of the contactor K5, the main power generation module, the auxiliary inverter module and the auxiliary power generation module are all in the off state, the controller controls the working states of the contactor K5, the main power generation module, the auxiliary inverter module and the auxiliary power generation module according to the power supply mode instruction to switch the power supply mode.

10. A vehicle, characterized in that: The vehicle comprises a plurality of carriages connected in a marshaling manner and a power supply and distribution system as claimed in claim 1 or 2.

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