WO2023279987A1

WO2023279987A1 - Self-powered railway flatcar, cold-chain transportation device and railway vehicle group

Info

Publication number: WO2023279987A1
Application number: PCT/CN2022/101179
Authority: WO
Inventors: 何远新; 黄政贤; 刘凤伟; 胡海滨; 岳胜娥; 常海
Original assignee: 中车长江运输设备集团有限公司
Priority date: 2021-07-09
Filing date: 2022-06-24
Publication date: 2023-01-12
Also published as: CN113650631A

Abstract

A self-powered railway flatcar, a cold-chain transportation device and a railway vehicle group. A self-powered railway flatcar (100) is provided with a self-powered system (50), the self-powered system (50) comprising a battery unit (51), a power supply unit (52), a charging unit (53) and a monitoring unit (54), wherein the battery unit (51), the power supply unit (52), the charging unit (53) and the monitoring unit (54) are mounted on a car body (10) in a distributed manner, and are electrically connected by means of a cable line (55); and the power supply unit (52) comprises an electric socket and/or a communication socket. When the self-powered railway flatcar (100) is applied to cold-chain transportation, since a battery unit for storing electric energy and a power supply unit for connection are additionally provided, electric energy can be separately supplied to a refrigerated container, such that single-section transportation of the refrigerated container is realized, thereby effectively shortening the shipping preparation time of goods.

Description

A self-powered railway flat car, cold chain transportation equipment and railway vehicle marshalling

Cross References to Related Applications

This disclosure claims the priority of a Chinese patent application filed on July 9, 2021 with application number 202110780322.2 and titled "A Self-Powered Railway Flat Car, Cold Chain Transportation Equipment, and Railway Vehicle Marshalling", the entire content of which is passed This reference is hereby incorporated.

technical field

The disclosure belongs to the technical field of railway flat cars, and in particular relates to a self-powered railway flat car, cold chain transportation equipment and railway vehicle marshalling.

Background technique

With the development and application of intelligent technology, telecommunication technology, remote monitoring and visual monitoring technology, logistics transportation and equipment have shown new characteristics, especially the public railway sea (water) container multimodal transport and container cold chain that have emerged in the past two years Transportation, due to its advantages of high efficiency, fastness and low cost, has been widely used rapidly.

The power unit for refrigeration is also installed in the cold chain transportation equipment, and other electrical loads need to be powered in other railway freight equipment. Such equipment needs to consume electric energy during the application process. In my country, the traditional railway flat car is generally composed of car body, bogie, brake device, and coupler buffer device. The car does not have electricity and electrical devices, which ensures the safety of railway freight to the greatest extent.

Since my country's railway freight flat cars do not have the function of generating electricity, they cannot meet the needs of cold chain transportation and multimodal transportation in the current society. In order to carry out the railway transportation of mechanical refrigerated containers, a special flat car for refrigerated containers has been specially modified and developed, and power transmission lines and electrical transmission lines have been installed. Electrical transmission lines are connected with railway power generation circuits to realize the transmission and distribution of electric power.

The marshalling of multiple refrigerated container railway flat cars and railway generator cars greatly prolongs the preparation time for transportation, and greatly increases the cost and energy consumption of refrigerated containers during the waiting period in the yard.

Contents of the invention

The disclosure discloses a self-powered railway flat car, cold chain transportation equipment and railway car marshalling, which are used for container multimodal transportation and cold chain transportation, provide electric energy for refrigerated container refrigeration units and other electrical facilities, and realize single-section refrigerated containers transportation. By using one or more embodiments of the present disclosure, the technical problem of long preparation time for container transportation in the prior art is solved.

The first aspect of the present disclosure provides a self-powered railway flat car, including a car body, a bogie installed on the car body, a braking device and a coupler buffer device, and the car body is provided with a self-powered system, the self-powered system includes a battery unit, a power supply unit, a charging unit, and a monitoring unit, and the battery unit, the power supply unit, the charging unit, and the monitoring unit are distributedly installed on the vehicle body, and Electrically connected through a cable; the battery unit is used to supply power to an electrical load, and the battery unit is electrically connected to the power supply unit and the charging unit respectively; the power supply unit includes a power socket and/or a communication socket , for connecting the electric load through a pluggable wire line; the monitoring unit is electrically connected with the battery unit, the power supply unit and the charging unit respectively, and is used for charging monitoring and power supply monitoring.

The second aspect of the present disclosure provides cold chain transportation equipment, including the self-powered railway flat car of the first aspect above and more than one refrigerated container, the refrigerated container is placed on the car body, and the The refrigerated container is connected to the power supply unit by electrical/electrical wires.

A third aspect of the present disclosure provides a railway vehicle formation, including a tractor and at least one self-powered railway flat car of the first aspect above.

Description of drawings

Fig. 1 shows a schematic structural view of a self-powered railway flat car according to one or more embodiments of the present disclosure.

Fig. 2 shows a first schematic structural view of a self-powered railway flat car according to one or more embodiments of the present disclosure.

Fig. 3 shows a schematic diagram of an arrangement structure of a power supply unit of a self-powered railway flat car according to one or more embodiments of the present disclosure.

Fig. 4 shows a schematic diagram of an arrangement structure of a charging unit of a self-powered railway flat car according to one or more embodiments of the present disclosure.

FIG. 5 shows a schematic diagram of a self-powering system of a self-powered railway flat car according to one or more embodiments of the present disclosure.

Fig. 6 shows a schematic diagram of wiring of a high-voltage junction box in a self-power supply system of a self-powered railway flat car according to one or more embodiments of the present disclosure.

Fig. 7 shows a schematic structural diagram of cold chain transportation equipment according to one or more embodiments of the present disclosure.

Fig. 8 shows the first structural schematic diagram of cold chain transportation equipment according to one or more embodiments of the present disclosure.

Explanation of reference signs: 100-self-powered railway flat car, 10-car body, 20-bogie, 30-braking device, 40-coupler buffer device, 50-self-powered system, 51-battery unit, 52-power supply unit , 53-charging unit, 54-monitoring unit, 55-cable wire; 200-refrigerated container; 300-power/electric wire. 1A-power socket (1-position), 1B-communication socket (1-position), 2A-power socket (2-position), 2B-communication socket (2-position), 1C-fast charge socket (1-position), 4C-fast charge socket (4 positions).

detailed description

Aiming at the technical problem that traditional railway wagons cannot supply power, this disclosure proposes a railway flat car with a self-power supply device. The basic concept of this disclosure is as follows:

A self-powered railway flat car, including a car body, a bogie installed on the car body, a brake device and a coupler buffer device, the car body is provided with a self-power supply system, and the self-power supply system includes a battery unit, a power supply unit, and a charging unit and the monitoring unit, the battery unit, the power supply unit, the charging unit and the monitoring unit are distributed and installed on the vehicle body, and are electrically connected through cables; the battery unit is used to supply power to the load, and the battery unit is connected to the power supply unit and the charging unit Electrical connection; the power supply unit includes a power socket and/or a communication socket, which is used to connect the electrical load through a pluggable wire line; the monitoring unit is electrically connected to the battery unit, the power supply unit and the charging unit, respectively, for charging monitoring and power supply monitoring.

In the self-powered railway flat car provided by the present disclosure, the battery unit can store electric energy, and is used to supply power to the electric load (such as a refrigerated container) transported by the self-powered railway flat car or its own electric load; the power supply unit is used for It is connected to the transported electrical load (such as a refrigerated container) to transmit electric energy or transmit monitoring signals. The power supply unit includes a power socket and/or a communication socket, which is used to connect the electrical load through a pluggable wire line to realize the automatic operation of the railway flat car. The power transmission and signal interaction between the power supply system and the electric load; the charging unit is used to charge the battery unit, or supply power to the electric load of the self-powered railway flat car; the monitoring unit is connected with the battery unit, the power supply unit and the charging unit respectively Electrically connected to realize charging monitoring and power supply monitoring.

The self-powered railway flat car provided by the disclosure can continuously provide electric energy to container multimodal transport and cold chain transport equipment, thereby solving the technical problem that traditional railway freight cars cannot supply power. The self-powered railway flat car provided by the present disclosure can be applied to the fields of power supply for refrigeration units of railway refrigerated containers, vehicle-mounted remote monitoring equipment and other load power supplies.

In order to make those skilled in the art of the present disclosure understand the present disclosure more clearly, the technical solution of the present disclosure will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

In the first aspect of the present disclosure, a self-powered railway flat car 100 is provided, which maintains the basic overall structure of the existing railway flat car. The specific structure is shown in Figures 1 and 2, including the car body 10 and the The bogie 20 , the brake device 30 and the coupler buffer device 40 on the car body 10 , wherein the car body 10 is the part that supports the goods, are supported on the bogie 20 . The bogie 20 consists of more than two wheel sets, and springs and other components are installed to form a trolley with an independent structure. The bogie 20 is located at the lower part of the car body 10 and is the running part of the vehicle. It bears the weight of the vehicle and rests on the rails. drive. The effect of braking device 30 is to ensure that the train running at high speed can decelerate and stop within a specified distance. Braking device 30 generally includes foundation braking, wind braking device and hand braking device. The coupler buffer device 40 is composed of couplers, buffer devices and other parts, and is installed on the middle beams at both ends of the car body 10, and hangs the rolling stock together to form a group of trains, and transmits traction to ease the impact between the cars. This disclosure does not change the structure of the car body 10, the bogie 20, the brake device 30 and the coupler buffer device 40, so the more detailed details of the car body 10, the bogie 20, the brake device 30 and the coupler buffer device 40 The structure can refer to the prior art, and no further description will be made here.

Different from the prior art, the car body 10 of the self-powered railway flat car 100 of the present disclosure is provided with a self-powered system 50, and the self-powered system 50 includes a battery unit 51, a power supply unit 52, a charging unit 53 and a monitoring unit 54 , the battery unit 51 , the power supply unit 52 , the charging unit 53 and the monitoring unit 54 are installed in a distributed manner on the vehicle body 10 and are electrically connected through cables 55 . Wherein: the battery unit 51 can store electric energy, and is used to supply power to the electric load (such as a refrigerated container) transported by the self-powered railway flat car 100 or its own electric load; the power supply unit 52 is used to communicate with the transported electric load ( For example, refrigerated containers) are connected to transmit electric energy or transmit monitoring signals. The power supply unit 52 includes power sockets 1A/2A and/or communication sockets 1B/2B, which are used to connect the electric load 200 through pluggable wire lines to realize railway flat cars. Power transmission and signal interaction between the self-power supply system 50 and the electric load; the charging unit 53 is used to charge the battery unit 51, or supply power to the electric load of the self-powered railway flat car 100 itself; the monitoring unit 54 is connected to the battery unit respectively 51. The power supply unit 52 and the charging unit 53 are electrically connected to realize charging monitoring and power supply monitoring.

The battery unit 51 is used to store electric energy, so as to supply power to the electric load (such as a refrigerated container) transported by the self-powered railway flat car 100 or its own electric load. The battery unit 51 can be a storage battery, a hydrogen fuel cell or other batteries in the prior art or a combination of the above batteries. In one or more embodiments, the battery unit 51 includes a rechargeable battery pack, which can be repeatedly charged and discharged.

Considering that the common sizes of existing refrigerated containers are 20 inches, 40 inches and 45 inches, the size of the universal rail flat car can simultaneously transport two 20 inch containers, or ship a 40/45 inch container. In order to adapt to the above two shipping methods, referring to Fig. 1 and Fig. 2, in one or more embodiments, the power supply unit 52 includes at least 2 groups of socket groups, each group of socket groups includes a power socket and a communication socket, at least The two sets of sockets are respectively arranged at the 1-position end and the 2-position end of the vehicle body 10 . Wherein the most preferred solution is that the power supply unit 52 includes two

power sockets

1A, 2A and two

communication sockets

1B, 2B, as shown in FIG. /2A and a communication socket 1B/2B, so that the self-powered railway flat car 100 can be connected to two electric loads 200 (refrigerated containers) at the same time.

The charging unit 53 is used to charge the battery unit 51, or supply power to the electric load of the self-powered railway flat car 100 itself, that is, the charging unit 53 can be set as a socket for charging the rechargeable battery, or be used with the railway flat car itself. A plug for the electrical connection of an electrical load. In one or more embodiments, the charging unit 53 is only used to charge the battery unit 51. The charging unit 53 includes at least one fast charging socket. The fast charging socket 1C/4C adopts a standard fast charging socket for charging the rechargeable battery pack. For the convenience of charging, the fast charging socket is arranged on the side of the vehicle body 10 .

Since the railway flat car cannot move quickly from one side of the vehicle to the other side after being connected, two standard

fast charging sockets

1C and 4C are provided in the charging unit 53 of the railway flat car self-power supply system 50, respectively located on the flat car. The 1st and 4th positions of the car body 10, the 1st position and the 4th position are located at two opposite corners of the side of the car body 10, as shown in FIG. 4 . Of course, in other embodiments, the two fast-charging

sockets

1C and 4C can also be respectively arranged at the 2nd and 2nd positions of the vehicle body 10 . The side-mounted and diagonally arranged layout structure makes it possible to quickly connect cables and carry out charging operations no matter which side of the flatbed is close to the charging facility.

The monitoring unit 54 is electrically connected with the rechargeable battery pack, the power socket 1A/2A, the communication socket 1B/2B and the fast charging socket 1C/4C respectively, so as to realize charging monitoring and power supply monitoring. Specifically, referring to FIG. 5, in one or more embodiments, the monitoring unit 54 includes a monitoring controller, a battery management system (hereinafter referred to as BMS) and a high-voltage junction box, and the battery management system and the monitoring controller and the high-voltage junction box respectively Interaction, real-time monitoring of battery status, and functions of controlling charging, power supply and other operations. The high-voltage junction box is electrically connected to the battery unit 51, the power socket 1A/2A and the fast charging socket 1C/4C, and the BMS is used to monitor the battery status. The monitoring controller and BMS can directly adopt the monitoring controller and BMS in the existing new energy vehicles, and the specific content will not be described here.

Referring to FIG. 6, in one or more embodiments, the high-voltage junction box includes at least two line switches, and the number of line switches is the same as the sum of the number of power sockets 1A/2A and fast charging sockets 1C/4C. In this embodiment, there are 2 power sockets 1A/2A and 2 fast charging sockets 1C/4C, so the high-voltage junction box is equipped with 4 circuit switches. The power socket 1A/2A and the fast charging socket 1C/4C are electrically connected to the monitoring controller through the corresponding line switch, so that the monitoring controller controls the fast charging with the power socket 1A/2A or the charging plug not connected to the load. The line switch connected to the socket 1C/4C is in the off state, and the line switch connected to the power socket 1A/2A connected to the load or the fast charging socket 1C/4C connected to the charging plug is in the closed state.

The circuit switch can adopt any existing electric control switch, and the specific structure is not limited in this disclosure. In one or more embodiments, the line switch is a DC contactor switch, and an intermediate relay is connected in series between the DC contactor switch and the monitoring controller through a cable 55 . Specifically, the monitoring controller controls the opening and closing of the intermediate relay contacts with a small current through the set control program, and then controls the opening and closing of the DC contactor switch with a large current. The DC contactor switch is connected to the corresponding power socket 1A/ 2A/fast charge socket 1C/4C connected in series, used to connect and break larger current signals. As a preferred solution, the monitoring controller is also electrically connected to the power socket 1A/2A and the fast charging socket 1C/4C through the monitoring wire, and the monitoring controller receives the signal transmitted by the monitoring wire to determine whether the power socket 1A/2A is connected to the load. And whether the charging plug is connected to the fast charging socket 1C/4C, and then judge whether the power socket 1A/2A and the fast charging socket 1C/4C are in an idle state.

In order to simplify the circuit structure, in one or more embodiments, the monitoring unit 54 is powered by a rechargeable battery pack, and a DC converter (DC/DC) is connected in series on the power supply line between the monitoring unit 54 and the rechargeable battery pack. The converter (DC/DC) is adjusted to the set input pressure and then input to the monitoring controller. There is a switch k in series on the power supply line. In one or more embodiments, the switch k is a DC normally closed switch. The switch k is in the normally closed state to ensure that the monitoring controller can handle the power-on state for a long time, and it is only in the open state during electrical maintenance.

In other embodiments, the monitoring unit 54 also includes a positioning module and/or a remote control module, the positioning module is used to locate the position of the self-powered railway flat car 100 in real time; the remote control module is used to monitor the position of the self-powered railway flat car 100 in real time and operating status, and communicate wirelessly with the railway dispatching room. Both the positioning module and the remote control module are electrically connected with the monitoring controller.

Since the rechargeable battery pack is a high-voltage device, the corresponding power socket 1A/2A, communication socket 1B/2B, fast charging socket 1C/4C and high-voltage junction box all work under high-voltage conditions, and there is heat loss in the line during work, and the power Socket 1A/2A, communication socket 1B/2B, and fast charging socket 1C/4C will harm the human body when leakage occurs.

In order to achieve safe operation, the monitoring controller independently controls each power socket 1A/2A and each fast charging socket 1C/4C through the circuit switch to ensure operation safety during charging and power supply. Referring to Figure 6, all charging and power supply circuits are provided with switching elements (including DC contactor switches and intermediate relays), and each switching element is centrally installed in a high-voltage junction box, and the control part of the switching element (in one or more embodiments It can be an intermediate relay) is connected to the monitoring controller through a cable, and the monitoring controller controls the on-off of the switching element through a preset program, and then controls the charging and power supply of the railway flat car self-power supply system.

The specific control strategy is as follows:

1. Control strategy during power supply:

1.1 When the monitoring unit 54 detects that the power socket 1A of the 1-position terminal is connected to the load (refrigerated box) by receiving the signal, the intermediate relay of the power supply line switch (DC contactor switch) connected to the "power socket 1A (1-position terminal)" Send a control command, turn on the power supply line switch, and supply power to the load; at this time, the power supply line switch connected to the power socket 2A (bit terminal) is still in the closed state, avoiding the heat loss of the line connected to the 2-position terminal and the 2-position power socket 2A Electricity leakage hurts people.

1.2 Similarly, when the monitoring unit 54 detects that the 2-position terminal power socket 2A is connected to the load (refrigerated box) by receiving the signal, the power supply circuit switch (DC contactor switch) connected to the "power socket 2A (2-position terminal)" The intermediate relay sends control commands to turn on the power supply line switch to supply power to the load; at this time, the power supply line switch connected to the power socket 1A (1-bit terminal) is still in the closed state, which avoids the heat loss of the line connected to the 1-bit terminal and the 1-bit terminal. The terminal power socket 1A leakage hurts people.

1.3 When the monitoring unit 54 detects that the power socket 1A/2A of the 1-position end and the 2-position end is connected to the load (refrigerated box) at the same time by receiving the signal, it will send a message to "power socket 1A (1-position end)" and "power socket 2A (2 bit terminal)" and the intermediate relay connected to the power supply line switch (DC contactor switch) sends control commands at the same time, turns on the power supply line switch, and supplies power to the load.

1.4 When the monitoring unit 54 detects that the power sockets 1A/2A of the 1-position terminal and 2-position terminal are not connected to the load (refrigerated box) by receiving the signal, all power supply circuit switches are in the off state.

2. Control strategy during charging:

2.1 When the monitoring unit 54 detects that the 1-bit fast charging socket 1C is connected to the charging device by receiving the signal, it sends control to the intermediate relay of the charging circuit switch (DC contactor switch) connected to the "fast charging socket 1C (1-bit)" Command, turn on the charging circuit switch to charge the lithium battery; at this time, the charging circuit switch connected to the fast charging socket 4C (4 positions) is still in the off state, avoiding the heat loss of the 4 connected lines and the fast charging socket 4C (4 positions) Electricity leakage hurts people.

2.2 When the monitoring unit 54 detects that the 4-bit fast charging socket 4C is connected to the charging device by receiving the signal, it sends control to the intermediate relay of the charging circuit switch (DC contactor switch) connected to the "fast charging socket 4C (4 bits)" Command, turn on the charging circuit switch to charge the lithium battery; at this time, the charging circuit switch connected to the fast charging socket 1C (1 bit) is still in the off state, avoiding the heat loss of the line connected to the 1 bit and the fast charging socket 1C (1 bit) Electricity leakage hurts people.

2.3 When the monitoring unit 54 detects that the 1-bit and 4-bit fast charging sockets 1C/4C are connected to the charging equipment through receiving signals, it will send "fast charging socket 4C (4 bits)" and "fast charging socket 1C (1 bit) The intermediate relay of the connected charging circuit switch (DC contactor switch) sends a control command to open the charging circuit switch to charge the lithium battery.

2.4 When the monitoring unit 54 detects that the 1-bit and 4-bit fast charging sockets 1C/4C are not connected to the charging equipment through receiving signals, all charging switches are in the off state.

In addition, in order to ensure the safety of railway cargo transportation, as a preferred solution, all steel structures in the self-powered railway flat car 100 of the present disclosure adopt reinforced protection design, and all non-metallic materials use flame-retardant materials.

In general, the self-powered railway flat car of the present disclosure can be used for container intermodal transportation and cold chain transportation after the self-power supply system is installed on the railway flat car, and can be used for power-consuming facilities such as refrigerated container refrigerating units. Independent power supply realizes single-section transportation of refrigerated containers, effectively shortens the preparation time for goods shipment, makes container transportation flexible and fast, and effectively reduces yard costs and energy consumption.

In the second aspect of the present disclosure, a cold chain transportation equipment is provided, including the above-mentioned self-powered railway flat car 100 of the first aspect of the present disclosure and more than one refrigerated container, see Fig. 7 and Fig. 8 , the refrigerated container 200 is placed on the vehicle body 10 , and the refrigerated container 200 is connected to the power supply unit 52 through the power/electrical wire 300 . The self-powered rail flat car 100 can simultaneously transport two 20-inch refrigerated containers, or one 40/45-inch refrigerated container.

Taking the shipment of two 20-inch refrigerated containers 200 as an example, when the electrical load (two refrigerated containers) is placed on the flat car, connect the railway flat car with a cable with a power plug and a communication plug (that is, the power/electric wire 300) respectively. The power socket 1A/2A of the car, the communication socket 1B/2B, and the power socket and communication socket on the electric load realize the power transmission and signal interaction between the self-power supply system of the railway flat car and the electric load.

In one or more embodiments, the refrigerated container 200 may be provided with a second power supply unit, and the second power supply unit may be a battery (such as a lead-acid battery), a rechargeable power battery (such as a lithium battery), etc., the present disclosure No restrictions. The capacity/output power of the second power supply unit can meet the electricity demand of the refrigerated container 200 during road transportation. When the refrigerated container 200 is transported by rail, the self-power supply system 50 of the self-powered railway flat car 100 can be selected to supply power. Or supply power through the built-in second power supply unit.

Considering that when the refrigerated container 200 is transported in short distances between cities and urban areas, its electricity demand is only less than 1/3 of the electricity demand during railway transportation. In one or more embodiments, the battery unit 51 of the self-powered railway flat car 100 The capacity is larger than the second power supply unit of the refrigerated container 200, which is equivalent to transferring the excess power battery on the refrigerated container 200 to the railway flat car to become a shared battery, which can not only reduce the self-weight of the refrigerated container 200, but also increase the load. During the railway transportation, most of the electricity will be powered by the battery unit 51 of the self-powered railway flat car 100, and the production cost of the refrigerated container 200 will be significantly reduced.

Generally speaking, when the self-powered railway flat car provided by the second aspect of the present disclosure is applied to cold chain transportation, more than one refrigerated container can be loaded on the self-powered railway flat car, and the refrigerated container is placed on the car body, and The refrigerated container is connected to the power supply unit through a cable, and the battery unit supplies power to the refrigerated container through the power supply unit. Due to the addition of a battery unit for storing electric energy and a power supply unit for connection, the self-powered railway flat car can be used to supply power to the refrigerated container independently. Provide electric energy, so as to realize single-section transportation of refrigerated containers, effectively shorten the preparation time for goods shipment, make container transportation flexible and fast, and effectively reduce yard costs and energy consumption.

In a third aspect of the present disclosure, a railway vehicle formation is provided, including a tractor and at least one self-powered railway flatcar 100 according to the above-mentioned first aspect of the present disclosure.

Specifically, the railway vehicle formation may be composed of tractors and several railway flat cars, one or several of the several railway flat cars are the above-mentioned self-powered railway flat cars 100 in the first aspect of the present disclosure, and the rest are ordinary The railway flat car is powered by the above-mentioned self-powered railway flat car 100 of the first aspect of the present disclosure. Of course, in one or more embodiments, other grouping methods can also be used, for example, grouping the self-powered railway flat car 100 of the first aspect of the present disclosure above with railway freight cars such as railway funnel cars and long freight cars, etc. , the specific grouping methods will not be listed here.

In one or more embodiments, the railway vehicle formation may further include tractors and at least one self-powered railway flat car cold-chain transportation device according to the second aspect of the present disclosure. Specifically, the refrigerated container 200 is placed on the car body 10 of the self-powered railway flat car 100 .

Generally speaking, when the self-powered railway flat car of the present disclosure is applied to the formation of railway vehicles, since the battery unit for storing electric energy and the power supply unit for connection are added, the self-powered railway flat car can be supplied to refrigerated containers Or power supply for other loads such as vehicle-mounted remote monitoring equipment, making container multimodal transport and cold chain transport more diverse. The corresponding railway vehicle formation can realize the mixed formation of different types of railway freight cars.

While the preferred embodiments of the present disclosure have been described, additional changes and modifications can be made to these embodiments by those of ordinary skill in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the present disclosure.

It is obvious that those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure is also intended to include these modifications and variations.

Claims

A self-powered railway flat car, comprising a car body, a bogie installed on the car body, a brake device and a coupler buffer device, the car body is provided with a self-power supply system, and the self-power supply system includes a battery unit , a power supply unit, a charging unit and a monitoring unit, the battery unit, the power supply unit, the charging unit and the monitoring unit are distributedly installed on the vehicle body and are electrically connected by cables; the battery The unit is used to supply power to the electric load, and the battery unit is electrically connected to the power supply unit and the charging unit; The electric load is connected; the monitoring unit is electrically connected with the battery unit, the power supply unit and the charging unit respectively, and is used for charging monitoring and power supply monitoring.
The self-powered railway flat car according to claim 1, wherein: said power supply unit includes at least 2 groups of socket groups, each group of said socket groups includes one said power socket and one said communication socket, said at least two The group socket groups are respectively arranged at the 1-position end and the 2-position end of the vehicle body.
The self-powered railway flat car according to claim 1, wherein: the battery unit includes a rechargeable battery pack; and the charging unit includes at least one fast charging socket.
The self-powered railway flat car according to claim 3, wherein: the fast charging socket is arranged on the side of the car body.
The self-powered railway flat car according to claim 4, wherein: the charging unit includes two fast charging sockets, and the two fast charging sockets are respectively arranged at the 1st and 4th positions of the car body.
The self-powered railway flat car according to claim 3, wherein: the monitoring unit includes a monitoring controller, a battery management system and a high-voltage junction box, and the battery management system is separated from the monitoring controller and the high-voltage junction box For information exchange, the high voltage junction box is electrically connected to the battery unit, the power socket and the fast charging socket respectively.
The self-powered railway flat car according to claim 6, wherein: the high-voltage junction box includes at least two line switches, the number of the line switches is the same as the sum of the number of the power socket and the fast charging socket, The power socket and the fast charging socket are electrically connected to the monitoring controller through the corresponding line switch, so that the monitoring controller controls the power socket or the charging plug not connected to the load The circuit switch connected to the fast charging socket is in the off state, and the circuit switch connected to the power socket connected to the load or the fast charging socket connected to the charging plug is in the closed state.
The self-powered railway flat car according to claim 7, wherein: the line switch is a DC contactor switch, and an intermediate relay is connected in series between the DC contactor switch and the monitoring controller through a cable.
The self-powered railway flat car according to claim 6, wherein: the monitoring controller is also electrically connected to the power socket and the fast charging socket respectively through monitoring wires.
The self-powered railway flat car according to claim 6, wherein: the monitoring unit is powered by the rechargeable battery pack, and a DC converter is connected in series on the power supply line between the monitoring unit and the rechargeable battery pack.
The self-powered railway flat car according to claim 10, wherein a switch is connected in series on the power supply line.
The self-powered railway flat car according to claim 6, wherein: the monitoring unit further includes a positioning module and/or a remote control module, and the positioning module is used to locate the position of the self-powered railway flat car in real time; The remote control module is used for real-time monitoring of the position and running status of the self-powered railway flat car, and wireless communication with the railway dispatching room.
A cold chain transportation equipment, comprising the self-powered railway flat car described in any one of claims 1-12 and more than one refrigerated container, the refrigerated container is placed on the car body, and the refrigerated container passes through Power/electrical leads are connected to the power supply unit.
The cold chain transportation device according to claim 13, wherein: said refrigerated container is provided with a second power supply unit.
A railway vehicle formation, comprising a tractor and at least one self-powered railway flat car according to any one of claims 1-12; or comprising a tractor and at least one cold chain transport according to claim 13 or 14 equipment.