WO2024060406A1 - Urban rail vehicle power supply control device and in-garage power supply control device - Google Patents

Abstract

An urban rail vehicle power supply control device, comprising a first power source (201), two sockets (1) for sheds provided in a high voltage box of an urban rail vehicle, and in-shed plugs (3) provided in a shed. A first contact pair is provided between each socket (1) for sheds and each in-shed plug (3); the first contact pair comprises a first plug electric contact (31) and a second plug electric contact (32) provided on the in-shed plug (3), and a first socket electric contact (11) and a second socket electric contact (12) provided on the socket (1) for sheds. Two first socket electric contacts (11) corresponding to the two sockets (1) for sheds are electrically connected to each other, and two second socket electric contacts (12) corresponding to the two sockets (1) for sheds are electrically connected to each other. Socket cover plates (2) are provided with conductive blocks (21). The urban rail vehicle is further provided with a switch unit which is in a closed state only when a first condition is satisfied, wherein the first condition is that all knife switches on the urban rail vehicle are located at a power supply position for sheds; the switch unit is electrically connected between the two first socket electric contacts (11) corresponding to the two sockets (1) for sheds of the high voltage box, or is electrically connected between the two second socket electric contacts (12) corresponding to the two sockets (1) for sheds of the high voltage box. Further provided is an in-shed power supply control device for urban rail vehicles.

Description

A power supply control device for urban rail vehicles and a power supply control device in a garage Technical Field

The invention relates to a power supply control device for urban rail vehicles and a power supply control device in a garage, especially for light rail vehicles, and belongs to the field of rail transportation.

Background technique

When urban rail vehicles are being repaired in a garage, they need to be powered by the power supply in the garage. In the prior art, urban rail vehicles may enter the garage from one side or the other. Since the garage socket is generally located on the side of the vehicle, if the garage socket is only provided on one side of the vehicle, the garage plug drawn from the workshop power cabinet may need to bypass the vehicle to be electrically connected to the garage socket, which may cause poor contact between the garage plug and the garage socket or damage to the garage plug.

In order to avoid the above situation from happening, two sockets for storage are generally provided corresponding to one power cabinet, that is, one socket for storage is provided on each side of the vehicle. Since the electrical connection points of the two library sockets are electrically connected to each other, if the plug in the library is electrically connected to any one of the library sockets, both library sockets will be live. If the vehicle is powered by the garage power supply, but the cover of the garage socket that is not electrically connected to the plug in the garage is not closed, the operator may accidentally touch the socket, resulting in a risk of electric shock.

Contents of the invention

This invention is aimed at the problem that when an urban rail vehicle with a warehouse socket on each side is powered by the power supply in the warehouse, the operator accidentally touches the warehouse socket that is not electrically connected to the plug in the warehouse and the cover is not closed, which will cause the risk of electric shock. A power supply control device for urban rail vehicles is provided.

In order to solve the above technical problems, the technical solution adopted by the present invention is: an urban rail vehicle power supply control device, which includes a first power supply, two garage sockets located on both sides of the urban rail vehicle, and a garage socket located in the garage. Inner plug; the inner plug in the library is electrically connected to the first power supply; the socket for the library is provided with a socket cover; a first contact pair is provided between the socket for the library and the plug in the library; It also includes a first electrical circuit. A first switch unit and the first contact pair are connected in series on the first electrical circuit. The first switch unit is closed when the socket cover is closed. The first switch unit is connected in series with the first contact pair. The contact pairs are connected when the plug in the library is inserted into the socket; a second switch unit is provided between the first power supply and the plug in the library, and the second switch unit forms a closed state when the first electrical circuit is closed The loop is closed.

In the present invention, through the above arrangement, the depot socket on the urban rail vehicle can form an interlock control when connected with the depot plug, that is, only when the cover of one depot socket is closed and the other depot socket is electrically connected to the depot plug, the first electrical circuit forms a closed circuit and the second switch unit is closed to allow the depot plug to supply power. If the above conditions are not met, the depot plug is not allowed to supply power, thereby avoiding the risk of operators accidentally touching the charged and open depot socket.

Further, the first contact pair includes a first plug electrical contact and a second plug electrical contact provided on the in-store plug, and a first socket electrical contact and a second socket electrical contact provided on the storehouse socket, the first plug electrical contact cooperates with the first socket electrical contact, and the second plug electrical contact cooperates with the second socket electrical contact;

The first electrical circuit includes a first power supply end of a second power supply, a first plug electrical contact, a first socket electrical contact, a first switch unit, a second socket electrical contact, and a second plug electrical contact, which are connected in sequence. contacts and the second power supply terminal of the second power supply.

Further, the first switch unit includes a first conductive contact, a second conductive contact provided on the library socket, and a conductive block provided on the socket cover; the first conductive contact and the third conductive contact A socket electrical contact is electrically connected, and the second conductive contact is electrically connected to the second socket electrical contact; the conductive block connects the first conductive contact and the second conductive contact when the socket cover is closed. Contacts.

Further, the second switch unit is a normally open switch of a contactor, and the coil section of the contactor is provided between the second power supply and the plug in the library.

Furthermore, a switch unit is also provided in the first electrical circuit, and the switch unit is closed when all the knife switches on the urban rail vehicle are in the warehouse power supply position. As a result, power supply to the depot plug is only allowed when all the switches on the urban rail vehicle are in the depot power supply position.

Further, a second contact pair is provided between the library socket and the library plug, and the second contact pair is connected when the library plug is inserted into the library socket; the second contact pair One end is connected to the urban rail vehicle power storage unit, and the other end is connected to a first level detection unit for detecting the level;

A fourth switch unit is further provided between the second contact pair and the first level detection unit, and the fourth switch unit is closed when the first electrical circuit forms a closed loop. Thus, the status of each library socket can be detected, that is, whether the library socket is in a cover-covered state or whether the library socket is electrically connected to a plug in the library.

Further, the second contact pair includes a third socket electrical contact and a fourth socket electrical contact provided on the library socket, and a fifth plug electrical contact provided on the plug in the library. , a sixth plug electrical contact; the fifth plug electrical contact matches with the third socket electrical contact, and the sixth plug electrical contact matches with the fourth socket electrical contact.

Further, the fourth switch unit is a normally open switch of a contactor, and the coil section of the contactor is provided between the second power supply and the plug in the library.

Furthermore, a first switch button and a second switch button are connected in series on the first electrical circuit; the first switch button is provided on the plug in the garage, and the second switch button is provided in the garage.

Further, the urban rail vehicle includes a first driver's cab and a second driver's cab respectively located at both ends of the urban rail vehicle;

The high-voltage box of the first driver's cab is provided with an electrical connection point A1, an electrical connection point A2, a first switch, a second switch, and a first knife switch arranged between the electrical connection point A1 and the electrical connection point A2;

The second driver's cab is provided with an electrical connection point B1, an electrical connection point B2, a third switch, a fourth switch, and a second knife switch arranged between the electrical connection point B1 and the electrical connection point B2; the electrical connection point A2 electrically connected to each other at electrical connection point B2;

One end of the first switch and one end of the second switch are both electrically connected to the electrical connection point A1;

One end of the third switch and one end of the fourth switch are both electrically connected to the electrical connection point B1;

The other end of the first switch and the other end of the third switch are both electrically connected to the output end of the urban rail vehicle power storage unit;

The other end of the second switch and the other end of the fourth switch are both electrically connected to the reference ground;

The first knife switch and the second knife switch constitute all knife switches on the urban rail vehicle;

The urban rail vehicle power supply control device also includes a first relay;

The coil of the first relay is electrically connected between the other end of the second switch and the reference ground,/or between the other end of the fourth switch and the reference ground, and/or between the electrical connection point A2 and the electrical connection point B2;

The switch in the switch unit is a normally open switch of the first relay;

When the first driver's cab is in the activated state, the first switch is in the closed state;

When the first driver's cab is in an inactive state, the first switch is in an off state;

When the second driver's cab is in the activated state, the third switch is in the closed state;

When the second driver's cab is in an inactive state, the third switch is in an off state;

The second switch is in an opposite state to the first switch, and the fourth switch is in an opposite state to the third switch;

When the first knife switch is in the warehouse power supply position, the electrical connection point A1 and the electrical connection point A2 are connected;

When the first knife switch is at the non-bank power supply position, the electrical connection point A1 and the electrical connection point A2 are not connected;

When the second knife switch is at the library power supply position, the electrical connection point B1 and the electrical connection point B2 are in the connected state;

When the second knife switch is in the non-bank power supply position, the electrical connection point B1 and the electrical connection point B2 are not connected;

Preferably, the switches in the switch unit have the same number as the coils of the first relay and are arranged correspondingly;

Preferably, the other end of the second switch and the other end of the fourth switch are electrically connected to a second level detection unit for detecting the level;

More preferably, the high-voltage box of the first driver's cab is provided with electrical connection points A3 and A4; the high-voltage box of the second driver's cab is provided with electrical connection points B3 and B4; The electrical connection point A3 and the electrical connection point B3 are both electrically connected to the output end of the urban rail vehicle power storage unit; the electrical connection point A4 and the electrical connection point B4 are both electrically connected to the second level detection unit;

When the first knife switch is located at the power supply position of the external power supply line, the electrical connection point A3 and the electrical connection point A4 are in the connected state;

When the first knife switch is located at the non-external power supply line power supply position, the electrical connection point A3 and the electrical connection point A4 are not connected;

When the second knife switch is located at the power supply position of the external power supply line, the electrical connection point B3 and the electrical connection point B4 are in the connected state;

When the second knife switch is in the non-external power supply line power supply position, the electrical connection point B3 and the electrical connection point B4 are not connected.

In the present invention, through the above arrangement, the knife switches in the two driver's cabs of the vehicle can form an interlocked state, that is, only when the two knife switches are located at the warehouse power supply position, a circuit can be formed, so that the first Only when the coil of the relay is energized can the switch of the switch unit be closed. If any of the two knife switches in the cab is not in the warehouse power supply position, a loop cannot be formed, that is, the switch of the switch unit can only be in the off state.

The invention also provides a power supply control device for an urban rail vehicle, which includes two warehouse sockets respectively provided on both sides of the urban rail vehicle;

The library socket has a first socket power supply connector and a second socket power supply connector;

The library socket is also provided with a first socket electrical contact, a second socket electrical contact, a first conductive contact electrically connected to the first socket electrical contact, and a third electrical contact electrically connected to the second socket electrical contact. two conductive contacts;

The two first socket electrical contacts corresponding to the two library sockets are electrically connected to each other;

The two second socket electrical contacts corresponding to the two library sockets are electrically connected to each other;

The socket cover of the library socket is further provided with a conductive block for contacting both the first conductive contact and the second conductive contact when the socket cover is closed.

In the present invention, through the above arrangement, the warehouse socket on the urban rail vehicle can form an interlocking control when connected to the plug in the warehouse, that is, only when the cover plate of one warehouse socket is closed, the other warehouse socket is connected to the warehouse socket. The internal plug in the library is only allowed to provide power when the internal plug is electrically connected. If the above conditions are not met, power supply to the plug in the library is not allowed, thereby avoiding risks caused by operators accidentally touching a live and open socket in the library.

Further, the library socket is also provided with a third socket electrical contact and a fourth socket electrical contact;

The two third socket electrical contacts corresponding to the two storage sockets of the high-voltage box are both electrically connected to the output end of the urban rail vehicle power storage unit;

Each fourth socket electrical contact is connected to a first level detection unit for detecting the level.

In the present invention, by arranging the third socket electrical contact and the fourth socket electrical contact, it is possible to detect the level states of the two third socket electrical contacts corresponding to the two library sockets, thereby detecting the level status of each library socket. The state of the socket, that is, whether the cover of the library socket is closed or whether the library socket is electrically connected to the plug in the library.

Further, the urban rail vehicle is also provided with a switch unit that is in a closed state only when the first condition is met, and the first condition is that all knife switches on the urban rail vehicle are located at the library power supply position;

The switch unit is electrically connected between the two first socket electrical contacts corresponding to the two library sockets of the high-voltage box, or is electrically connected between the two second sockets corresponding to the two library sockets of the high-voltage box. between the electrical contacts of a socket.

In the present invention, through the above arrangement, power supply by the plug in the warehouse is allowed only when all the knife switches on the urban rail vehicle are located at the power supply position for the warehouse.

Further, the urban rail vehicle includes a first driver's cab and a second driver's cab respectively located at both ends of the urban rail vehicle;

The high-voltage box of the first driver's cab is provided with an electrical connection point A1, an electrical connection point A2, a first switch, a second switch, and a first knife switch arranged between the electrical connection point A1 and the electrical connection point A2;

The high-voltage box of the second driver's cab is provided with an electrical connection point B1, an electrical connection point B2, a third switch, a fourth switch, and a second knife switch arranged between the electrical connection point B1 and the electrical connection point B2; The connection point A2 and the electrical connection point B2 are electrically connected to each other;

One end of the first switch and one end of the second switch are both electrically connected to the electrical connection point A1;

One end of the third switch and one end of the fourth switch are both electrically connected to the electrical connection point B1;

The other end of the first switch and the other end of the third switch are both electrically connected to the output end of the urban rail vehicle power storage unit;

The other end of the second switch and the other end of the fourth switch are both electrically connected to the reference ground;

The first knife switch and the second knife switch constitute all knife switches on the urban rail vehicle;

The urban rail vehicle power supply control device also includes a first relay;

The coil of the first relay is electrically connected between the other end of the second switch and the reference ground,/or between the other end of the fourth switch and the reference ground, and/or between the electrical connection point A2 and the electrical connection point B2;

The switch in the switch unit is a normally open switch of the first relay;

The switches in the switch unit have the same number as the coils of the first relay and are arranged correspondingly;

When the first driver's cab is in the activated state, the first switch is in the closed state;

When the first driver's cab is in an inactive state, the first switch is in an off state;

When the second driver's cab is in the activated state, the third switch is in the closed state;

When the second driver's cab is in an inactive state, the third switch is in an off state;

The second switch is in an opposite state to the first switch, and the fourth switch is in an opposite state to the third switch;

When the first knife switch is located at the library power supply position, the electrical connection point A1 and the electrical connection point A2 are in the connected state;

When the first knife switch is at the non-bank power supply position, the electrical connection point A1 and the electrical connection point A2 are not connected;

When the second knife switch is at the library power supply position, the electrical connection point B1 and the electrical connection point B2 are in the connected state;

When the second knife switch is in the non-bank power supply position, the electrical connection point B1 and the electrical connection point B2 are not connected.

Preferably, the switches in the switch unit have the same number as the coils of the first relay and are arranged correspondingly.

Preferably, the other end of the second switch and the other end of the fourth switch are electrically connected to a second level detection unit for detecting the level.

More preferably, the high-voltage box of the first driver's cab is provided with electrical connection points A3 and A4; the high-voltage box of the second driver's cab is provided with electrical connection points B3 and B4; The electrical connection point A3 and the electrical connection point B3 are both electrically connected to the output end of the urban rail vehicle power storage unit; the electrical connection point A4 and the electrical connection point B4 are both electrically connected to the second level detection unit;

When the first knife switch is located at the power supply position of the external power supply line, the electrical connection point A3 and the electrical connection point A4 are in the connected state;

When the first knife switch is located at the non-external power supply line power supply position, the electrical connection point A3 and the electrical connection point A4 are not connected;

When the second knife switch is located at the external power supply line power supply position, the electrical connection point B3 and the electrical connection point B4 are in the connected state;

When the second knife switch is in the non-external power supply line power supply position, the electrical connection point B3 and the electrical connection point B4 are not connected.

In the present invention, through the above arrangement, the knife switches in the two driver's cabs of the vehicle can form an interlocked state, that is, only when the two knife switches are located at the warehouse power supply position, a circuit can be formed, so that the first Only when the coil of the relay is energized can the switch of the switch unit be closed. If any of the two knife switches in the cab is not in the warehouse power supply position, a loop cannot be formed, that is, the switch of the switch unit can only be in the off state.

In a preferred embodiment, the external power supply line is a third rail.

Through the above settings, it is possible to detect whether the two knife switches are at the library power supply position at the same time by detecting the level.

Through the above settings, it can be detected whether the two knife switches are located at the power supply position of the external power supply line.

Further, the power storage unit of the urban rail vehicle is a power storage unit of the auxiliary power supply system of the urban rail vehicle.

In the present invention, through the above arrangement, when the vehicle in the garage is not connected to the external power supply, the vehicle's own auxiliary power supply system can be used to provide power, thereby controlling the power supply to the coil of the contactor unit.

The present invention also provides an in-garage power supply control device for urban rail vehicles. There is a first power supply in the garage. The in-garage power supply control device also includes a garage socket for cooperating with the above-mentioned urban rail vehicle power supply control device. The plug in the library;

One end of the plug in the library is provided with a first plug power supply connector and a second plug power supply connector for correspondingly connecting to the first socket power supply connector and the second socket power supply connector. The first plug power supply connector and the second plug power supply connector are The connector is electrically connected to one power supply end and the other power supply end of the first power supply respectively;

One end of the plug in the library is also provided with a first plug electrical contact and a second plug electrical contact for corresponding matching connection with the first socket electrical contact and the second socket electrical contact;

The urban rail vehicle power supply control device also includes a contactor unit;

There is also a second power supply in the garage, and the first plug electrical contact and the second plug electrical contact are respectively electrically connected to one power supply end and the other power supply end of the second power supply;

The coil of the contactor unit is electrically connected between the first plug electrical contact and one power supply terminal of the second power supply, or between the second plug electrical contact and the other power supply terminal of the second power supply. ;

The first normally open switch of the contactor unit is electrically connected between the first plug power supply connector and a power supply end of the first power supply;

The second normally open switch of the contactor unit is electrically connected between the second plug power supply connector and the other power supply end of the first power supply;

Furthermore, the warehouse socket is also provided with a third socket electrical contact and a fourth socket electrical contact;

The two third socket electrical contacts corresponding to the two storage sockets of the high-voltage box are both electrically connected to the output end of the urban rail vehicle power storage unit;

Each fourth socket electrical contact is connected to a first level detection unit for detecting the level;

One end of the plug in the library is also provided with a fifth plug electrical contact and a sixth plug electrical contact for corresponding matching connection with the third socket electrical contact and the fourth socket electrical contact respectively;

The third normally open switch of the contactor unit is connected between the fifth plug electrical contact and the sixth plug electrical contact;

Preferably, the contactor unit includes a first contactor and a second contactor; the coil of the first contactor and the coil of the second contactor are connected in series to form the coil of the contactor unit, or the third contactor The coil of a contactor and the coil of the second contactor are connected in parallel to form the coil of the contactor unit; the first normally open switch and the second normally open switch are both normally open switches of the first contactor; The third normally open switch is the normally open switch of the second contactor.

The invention also provides an in-garage power supply control device for urban rail vehicles. The garage has a first power supply and an in-garage plug used to cooperate with the garage socket of the urban rail vehicle;

One end of the plug in the library is provided with a first plug power supply connector and a second plug power supply connector. The first plug power supply connector and the second plug power supply connector correspond to one power supply end and the other power supply end of the first power supply respectively. connect;

It is characterized in that a first plug electrical contact and a second plug electrical contact are also provided at one end of the plug in the storage;

The urban rail vehicle power supply control device also includes a contactor unit;

The garage also has a second power supply, and the first plug electrical contact and the second plug electrical contact are respectively electrically connected to one power supply end and the other power supply end of the second power supply;

The coil of the contactor unit is electrically connected between the first plug electrical contact and one power supply terminal of the second power supply, or between the second plug electrical contact and the other power supply terminal of the second power supply. ;

The first normally open switch of the contactor unit is electrically connected between the first plug power supply connector and a power supply end of the first power supply;

The second normally open switch of the contactor unit is electrically connected between the second plug power supply connector and the other power supply end of the first power supply.

Further, the contactor unit is a first contactor; the first normally open switch and the second normally open switch are both normally open switches of the first contactor.

Further, one end of the plug in the library is also provided with a fifth plug electrical contact and a sixth plug electrical contact;

The third normally open switch of the contactor unit is connected between the fifth plug electrical contact and the sixth plug electrical contact;

Preferably, the contactor unit includes a first contactor and a second contactor; the coil of the first contactor and the coil of the second contactor are connected in series to form the coil of the contactor unit, or the third contactor The coil of a contactor and the coil of the second contactor are connected in parallel to form the coil of the contactor unit; the first normally open switch and the second normally open switch are both normally open switches of the first contactor; The third normally open switch is the normally open switch of the second contactor.

Further, the other end of the plug in the library is provided with a third plug power supply connector and a fourth plug power supply connector that are electrically connected to the first plug power supply connector and the second plug power supply connector respectively;

The other end of the plug in the library is provided with a third plug electrical contact and a fourth plug electrical contact that are electrically connected to the first plug electrical contact and the second plug electrical contact respectively;

The third plug power supply connector and the fourth plug power supply connector are electrically connected to one power supply end and the other power supply end of the first power supply respectively;

The third plug electrical contact and the fourth plug electrical contact are respectively electrically connected to one power supply end and the other power supply end of the second power supply.

Preferably, a first switch button is electrically connected between the first plug electrical contact and the third plug electrical contact or between the second plug electrical contact and the fourth plug electrical contact.

Preferably, a second switch button is electrically connected between the third plug electrical contact and one power supply terminal of the second power supply or between the fourth plug electrical contact and the other power supply terminal of the second power supply.

In the present invention, by arranging the first switch button and the second switch button, the switch can be manually controlled before the power supply conditions are met and a loop is formed to ensure the safety of electricity use.

Preferably, the contactor unit is arranged in a power cabinet in a garage; the first normally open switch of the contactor unit is electrically connected between the third plug power supply connector and one power supply end of the first power supply; The second normally open switch of the contactor unit is electrically connected between the fourth plug power supply connector and the other power supply end of the first power supply; the coil of the contactor unit is electrically connected between the fourth plug electrical contact and the second power supply The other power supply terminal of the power supply is electrically connected between the third plug electrical contact and one power supply terminal of the second power supply power supply;

Preferably, the contactor unit is arranged on the plug in the warehouse; the first normally open switch of the contactor unit is electrically connected between the first plug power supply connector and the third plug power supply connector; the second normally open switch of the contactor unit is electrically connected between the second plug power supply connector and the fourth plug power supply connector; the coil of the contactor unit is electrically connected between the second plug electrical contact and the fourth plug electrical contact or between the first plug electrical contact and the third plug electrical contact.

In the present invention, through the above arrangement, an interlock control device can be formed. A loop will only be formed when all the switches on the urban rail vehicle are located at the power supply position for the library, the cover of one of the library sockets in the same high-voltage box is closed, and the other library socket is electrically connected to the plug in the library. , so that both ends of the coil of the contactor unit are connected to the two power supply terminals of the second power supply, so that the coil of the contactor unit is energized, so that the first normally open switch and the second normally open switch of the contactor unit are closed, Therefore, the first power supply in the garage can supply power to the garage socket through the garage plug. According to the technical solution of the present invention, each high-voltage box is provided with a corresponding circuit path. If the covers of two library sockets in the same high-voltage box are both open or closed, a circuit corresponding to the high-voltage box cannot be formed, that is, the coil of the corresponding contactor unit cannot be energized, that is, the first normal The on switch and the second normally open switch are both in the off state, and the first power supply in the garage cannot supply power to the garage socket through the plug in the garage. According to the technical solution of the present invention, when one socket of the high-voltage box is connected to the plug in the chamber, the cover of the other socket of the high-voltage box is in a closed state, thereby preventing the operator from accidentally touching it.

The advantages and positive effects of the present invention are: the inventive solution realizes the interlocking of two warehouse sockets in the same high-voltage box, the interlocking with the power supply in the ground warehouse, and the interlocking of the first driver's cab and the second driver's cab. Each warehouse is interlocked with the socket and each knife switch of the vehicle. The invention improves vehicle safety and reliability.

Description of the drawings

Figure 1 is a schematic circuit diagram of the cooperation between the power supply control device for urban rail vehicles and the power supply control device in a garage according to an embodiment of the present invention;

Figure 2 is a schematic structural diagram of the cooperation between the library socket and the socket cover of the urban rail vehicle power supply control device according to the embodiment of the present invention;

Figure 3 is a schematic structural diagram of one end of the garage plug of the garage power supply control device according to the embodiment of the present invention;

Figure 4 is a schematic diagram of the interlock control circuit of each knife switch in the urban rail vehicle power supply control device according to the embodiment of the present invention;

In the above figure, SHED is the library power supply position, and PR represents the third rail power supply position;

1. Storage socket, 11. Electrical contact of the first socket, 12. Electrical contact of the second socket, 13. Electrical contact of the third socket, 14. Electrical contact of the fourth socket, 15. First conductive contact, 16. The second conductive contact, 1A, the power supply connector of the first socket, 1B, the power supply connector of the second socket;

2. Socket cover, 21. Conductive block;

3. Plug in the warehouse, 31. First plug electrical contact, 32. Second plug electrical contact, 33. Third plug electrical contact, 34. Fourth plug electrical contact, 35. Fifth plug electrical contact, 36. Sixth plug electrical contact, 3A. First plug power supply connector, 3B. Second plug power supply connector, 3C. Third plug power supply connector, 3D. Fourth plug power supply connector;

51. The first normally open switch, 52. The second normally open switch, 53. The third normally open switch;

61. The coil of the first contactor, 62. The coil of the second contactor;

71. First level detection unit, 72. Second level detection unit;

100. Urban rail vehicle power storage unit, 101. First switch, 102. Second switch, 103. Third switch, 104. Fourth switch, 105. First switch, 106. Second switch, 107. A coil of a relay, 108. a switch in the switch unit;

201. First power supply, 202. Second power supply;

301. The first switch button, 302. The second switch button.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The present invention provides a power supply control device for an urban rail vehicle. The high-voltage box of the urban rail vehicle has two warehouse sockets 1 respectively located on both sides of the urban rail vehicle (ie, both sides in the vehicle extension direction).

The warehouse socket 1 has a first socket power supply connector 1A and a second socket power supply connector 1B.

The garage has a first power supply 201 and a garage plug 3 used to cooperate with the garage socket 1 . When the warehouse socket 1 is connected to the internal plug 3 and the warehouse power supply is selected, the first power supply 201 can supply power to the urban rail vehicle through the first socket power supply connector 1A and the second socket power supply connector 1B. The connection between the first socket power supply connector 1A and the second socket power supply connector 1B in the warehouse socket 1 and the powered circuit of the urban rail vehicle is a prior art.

The library socket 1 is also provided with a first socket electrical contact 11, a second socket electrical contact 12, a first conductive contact 15 electrically connected to the first socket electrical contact 11, and a second socket electrical contact. Point 12 is electrically connected to the second conductive contact 16 .

The two first socket electrical contacts 11 corresponding to the two sockets 1 of the high-voltage box are electrically connected to each other.

The two second socket electrical contacts 12 corresponding to the two storage sockets 1 of the high-voltage box are electrically connected to each other.

The socket cover 2 of the library socket 1 is also provided with a conductive block 21 for contacting both the first conductive contact 15 and the second conductive contact 16 when the socket cover 2 is closed.

One end of the plug 3 in the library is also provided with a first plug electrical contact 31 and a second plug electrical contact 32 for correspondingly mating connection with the first socket electrical contact 11 and the second socket electrical contact 12 respectively.

The urban rail vehicle power supply control device also includes a contactor unit.

The garage also has a second power supply 202. The first plug electrical contact 31 and the second plug electrical contact 32 are respectively connected to one power supply end (power supply output end) and the other power supply end of the second power supply 202. (Power supply output terminal) corresponds to the electrical connection.

The coil of the contactor unit is electrically connected between the first plug electrical contact 31 and one power supply end of the second power supply 202, or between the second plug electrical contact 32 and the other of the second power supply 202. between power supply terminals.

The first normally open switch 51 of the contactor unit is electrically connected between the first plug power supply connector 3A and a power supply end (power output end) of the first power supply 201 .

The second normally open switch 52 of the contactor unit is electrically connected between the second plug power supply connector 3B and another power supply end (power supply output end) of the first power supply 201 .

The urban rail vehicle is also provided with a switch unit that is in a closed state only when the first condition is met, and the first condition is that all knife switches on the urban rail vehicle are located at the warehouse power supply position.

The switch unit is electrically connected between the two first socket electrical contacts 11 corresponding to the two library sockets 1 of the high-voltage box, or between the two corresponding first socket sockets 1 of the high-voltage box. between the electrical contacts 12 of the second socket.

When all the knife switches on the urban rail vehicle are in the warehouse power supply position, the switches 108 in all switch units are closed.

When one library socket 1 is connected to the plug 3 in the library, and the library socket 1 on the other side is covered by the cover plate, then the first conductive contact 15, the second conductive contact 16, the coil of the contactor unit, The circuit formed by the second power supply 202 and the switch 108 in the switch unit is turned on, so that the coil of the contactor unit is energized, so that the first normally open switch 51 and the second normally open switch 52 of the contactor unit are both turned on, Therefore, the first power supply 201 in the warehouse can supply power to the urban rail vehicle through the first socket power supply connector 1A and the second socket power supply connector 1B.

The first switch button 301 and/or the second switch button 302 may also be connected in series in the above circuit. A manually operated first switch button 301 is provided near the library socket 1 . The manually operated second switch button 302 is provided near the garage plug 3 in the garage. From this, you can further confirm whether the vehicle is powered by the library power supply by manually operating the switch button. The contactor unit is a first contactor. The first normally open switch 51 and the second normally open switch 52 are both normally open switches of the first contactor.

The library socket 1 is also provided with a third socket electrical contact 13 and a fourth socket electrical contact 14 .

The two third socket electrical contacts 13 corresponding to the two bank sockets 1 of the high-voltage box are both electrically connected to the output end (also called the positive output end) of the urban rail vehicle power storage unit 100. For example, the urban rail vehicle power storage unit 100 is a DC power supply of DC 110V, and the power supply end output of the urban rail vehicle power storage unit 100 is a 110V voltage.

One end of the plug 3 in the library is also provided with a fifth plug electrical contact 35 and a sixth plug electrical contact 36 for correspondingly mating connection with the third socket electrical contact 13 and the fourth socket electrical contact 14 respectively.

The third normally open switch 53 of the contactor unit is connected between the fifth plug electrical contact 35 and the sixth plug electrical contact 36 .

Each fourth socket electrical contact 14 is connected to a first level detection unit 71 for detecting the level.

Preferably, the contactor unit includes a first contactor and a second contactor. The coil 61 of the first contactor and the coil 62 of the second contactor are connected in series to form a coil of the contactor unit, or the coil 61 of the first contactor and the coil 62 of the second contactor are connected in parallel to form a coil of the contactor unit. The coil forming the contactor unit. The first normally open switch 51 and the second normally open switch 52 are both normally open switches of the first contactor. The third normally open switch 53 is a normally open switch of the second contactor.

For the library socket 1 connected to the plug 3 in the library, the third socket electrical contact 13 and the fourth socket electrical contact 14 are connected to each other through the corresponding first level detection unit 71 and the turned-on third normally open switch 53 , so that the first level detection unit 71 corresponding to the library socket 1 is connected to the urban rail vehicle power storage unit 100, thereby detecting a high level.

For the library socket 1 that is not connected to the plug 3 in the library, since the corresponding third normally open switch 53 is disconnected, the third socket electrical contact 13 and the fourth socket electrical contact 14 cannot be connected, making the connection with the library socket 1 impossible. The first level detection unit 71 corresponding to the socket 1 cannot be connected to the urban rail vehicle power storage unit 100, and therefore cannot detect the high level.

The other end of the internal plug 3 is provided with a third plug power connector 3C and a fourth plug power connector 3D which are electrically connected to the first plug power connector 3A and the second plug power connector 3B respectively.

The other end of the plug 3 in the library is provided with a third plug electrical contact 33 and a fourth plug electrical contact 34 that are electrically connected to the first plug electrical contact 31 and the second plug electrical contact 32 respectively.

The third plug power supply connector 3C and the fourth plug power supply connector 3D are electrically connected to one power supply end and the other power supply end of the first power supply 201 respectively.

The third plug electrical contact 33 and the fourth plug electrical contact 34 are electrically connected to one power supply end and the other power supply end of the second power supply 202 respectively.

Preferably, a first switch button 301 is electrically connected between the first plug electrical contact 31 and the third plug electrical contact 33 or between the second plug electrical contact 32 and the fourth plug electrical contact 34 .

Preferably, a third plug is electrically connected between the third plug electrical contact 33 and one power supply end of the second power supply 202 or between the fourth plug electrical contact 34 and the other power supply end of the second power supply 202 . Two switch buttons 302.

The contactor unit is installed in a power cabinet in the garage.

The first normally open switch 51 of the contactor unit is electrically connected between the third plug power supply connector 3C and a power supply end of the first power supply 201 .

The second normally open switch 52 of the contactor unit is electrically connected between the fourth plug power supply connector 3D and the other power supply end of the first power supply 201 .

The coil of the contactor unit is electrically connected between the fourth plug electrical contact 34 and one power supply end of the second power supply 202 .

The contactor unit is arranged on the plug 3 in the library.

The first normally open switch 51 of the contactor unit is electrically connected between the first plug power supply connector 3A and the third plug power supply connector 3C.

The second normally open switch 52 of the contactor unit is electrically connected between the second plug power supply connector 3B and the fourth plug power supply connector 3D.

The coil of the contactor unit is electrically connected between the second electrical plug contact 32 and the fourth electrical plug contact 34 .

The urban rail vehicle includes a first driver's cab and a second driver's cab respectively located at both ends of the urban rail vehicle.

As shown in Figure 4, the high-voltage box of the first driver's cab is provided with an electrical connection point A1, an electrical connection point A2, a first switch 101, a second switch 102, and is provided between the electrical connection point A1 and the electrical connection point A2. The first knife switch between 105.

The high-voltage box of the second driver's cab is provided with an electrical connection point B1, an electrical connection point B2, a third switch 103, a fourth switch 104, and a second knife switch arranged between the electrical connection point B1 and the electrical connection point B2. 106. Electrical connection point A2 and electrical connection point B2 are electrically connected to each other.

One end of the first switch 101 and one end of the second switch 102 are both electrically connected to the electrical connection point A1.

One end of the third switch 103 and one end of the fourth switch 104 are both electrically connected to the electrical connection point B1.

The other ends of the first switch 101 and the third switch 103 are both electrically connected to the output end of the urban rail vehicle power storage unit 100 (that is, M1 and N1 are both electrically connected to the output end of the urban rail vehicle power storage unit 100). The output of the output terminal of the urban rail vehicle power storage unit 100 may be a positive voltage (for example, 110V).

The other end of the second switch 102 and the other end of the fourth switch 104 are both electrically connected to the reference ground (ie, M2, N2). In a preferred embodiment, the other ends of the second switch 102 and the fourth switch 104 are electrically connected to each other.

The first knife switch 105 and the second knife switch 106 constitute all the knife switches on the urban rail vehicle.

The urban rail vehicle power supply control device also includes a first relay (which may also be called a storage permission relay).

The coil 107 of the first relay is electrically connected between the other end of the second switch 102 and the reference ground and/or between the other end of the fourth switch 104 and the reference ground and/or between the electrical connection point A2 and the electrical connection point B2.

In the embodiment shown in Figure 4, the other end of the second switch 102, the other end of the fourth switch 104, and a coil 107 of the first relay are connected together. The other end of the second switch 102, the other end of the fourth switch 104, The other coil 107 of the first relay is connected together. In this embodiment, two coils 107 are respectively arranged corresponding to two switches 108. That is, only when both coils 107 are energized can both series-connected switches 108 be turned on and the switch unit can be in a closed state.

In other ways, only one coil 107 of the first relay can be provided between the other end of the second switch 102 and the reference ground, or only one coil of the first relay can be provided between the other end of the fourth switch 104 and the reference ground. 107. In this embodiment, when the coil 107 of the first relay is turned on, the switch unit is in a closed state.

The switch 108 in the switch unit is a normally open switch of the first relay.

The number of switches 108 in the switch unit is the same as that of the coils 107 of the first relay and they are arranged correspondingly.

When the first driver's cab is in the activated state, the first switch 101 is in the closed state.

When the first driver's cab is in an inactive state, the first switch 101 is in an open state.

When the second driver's cab is in the activated state, the third switch 103 is in the closed state.

When the second driver's cab is in an inactive state, the third switch 103 is in an off state.

Only one of the first driver's cab and the second driver's cab can be activated.

The second switch 102 has an opposite state to the first switch 101 , and the fourth switch 104 has an opposite state to the third switch 103 .

When the first knife switch 105 is located at the library power supply position, the electrical connection point A1 and the electrical connection point A2 are in a connected state.

When the first knife switch 105 is in the non-bank power supply position, the electrical connection point A1 and the electrical connection point A2 are not connected.

When the second knife switch 106 is at the library power supply position, the electrical connection point B1 and the electrical connection point B2 are in a connected state.

When the second knife switch 106 is in the non-bank power supply position, the electrical connection point B1 and the electrical connection point B2 are not connected.

In the present invention, the non-bank power supply position may include a grounding position and an external power supply line power supply position. That is, the library power supply position, the grounding position, and the external power supply line power supply position are respectively different action positions of the knife switch, that is, the knife switch can move to one of the various positions.

The other end of the second switch 102 and the other end of the fourth switch 104 are both electrically connected to the second level detection unit 72 for detecting the level.

The high-voltage box of the first driver's cab is provided with electrical connection points A3 and A4.

The high-voltage box of the second driver's cab is provided with electrical connection points B3 and B4.

The electrical connection point A3 and the electrical connection point B3 are both electrically connected to the output end of the urban rail vehicle power storage unit 100 .

The electrical connection point A4 and the electrical connection point B4 are both electrically connected to the second level detection unit 72 .

When the first knife switch 105 is located at the power supply position of the external power supply line, the electrical connection point A3 and the electrical connection point A4 are in a connected state.

When the first knife switch 105 is in the non-external power supply line power supply position, the electrical connection point A3 and the electrical connection point A4 are not connected.

When the second knife switch 106 is located at the power supply position of the external power supply line, the electrical connection point B3 and the electrical connection point B4 are in a connected state.

When the second knife switch 106 is in the non-external power supply line power supply position, the electrical connection point B3 and the electrical connection point B4 are not connected.

The urban rail vehicle power storage unit 100 is a power storage unit of the urban rail vehicle auxiliary power supply system.

In this application, the urban rail vehicle may be a light rail vehicle (LRV). The output of the urban rail vehicle power storage unit 100 may be 110V voltage.

Both the first level detection unit 71 and the second level detection unit 72 may be network acquisition modules of the vehicle.

The first power supply 201 may be a ±375V power supply. The second power supply 202 may use a 230V power supply.

The first switch button 301 can be a button provided on the plug in the library, and can be a self-locking button, that is, after being pressed, the switch remains in a closed state. The plug in the library is a plug from the distribution box on the ground. There is a button on the plug that locks itself when pressed to keep the electrical connection connected.

The second switch button 302 can be a confirmation button provided in the ground garage, and can be installed next to the power cabinet.

The reference ground is the ground terminal of the 110V power supply.

The present invention also provides an in-garage power supply control device for urban rail vehicles. There is a first power supply 201 in the garage. The in-garage power supply control device also includes a power supply control device for use with any one of claims 1-4. The warehouse socket 1 of the urban rail vehicle power supply control device is matched with the plug 3 in the warehouse.

One end of the plug 3 in the library is provided with a first plug power supply connector 3A and a second plug power supply connector 3B for correspondingly connecting to the first socket power supply connector 1A and the second socket power supply connector 1B. The first plug power supply connector 3A. The second plug power supply connector 3B is electrically connected to one power supply end and the other power supply end of the first power supply 201 respectively.

It is characterized in that one end of the plug 3 in the library is also provided with a first plug electrical contact 31 and a second plug electrical contact for corresponding matching connection with the first socket electrical contact 11 and the second socket electrical contact 12 respectively. 32.

The urban rail vehicle power supply control device also includes a contactor unit.

The garage also has a second power supply 202, and the first plug electrical contact 31 and the second plug electrical contact 32 are respectively electrically connected to one power supply end and the other power supply end of the second power supply 202.

The coil of the contactor unit is electrically connected between the first plug electrical contact 31 and one power supply end of the second power supply 202, or between the second plug electrical contact 32 and the other of the second power supply 202. between power supply terminals.

The first normally open switch 51 of the contactor unit is electrically connected between the first plug power supply connector 3A and a power supply end of the first power supply 201 .

The second normally open switch 52 of the contactor unit is electrically connected between the second plug power supply connector 3B and the other power supply end of the first power supply 201 .

One end of the in-warehouse plug 3 is provided with a first plug power connector 3A and a second plug power connector 3B for respectively correspondingly connecting with the first socket power connector 1A and the second socket power connector 1B. The first plug power connector 3A and the second plug power connector 3B are respectively electrically connected to one power supply end and the other power supply end of the first power supply 201.

This library uses the power interlock control scheme to achieve:

1. Two libraries in the same high-voltage box are interlocked with sockets;

2. The one-unit and two-unit libraries are interlocked with sockets;

3. Interlocking with ground power supply;

4. Interlocked with the knife switch.

In the present invention, the relevant protection logic and circuit are as follows:

(1) Interlocking between two warehouse sockets in the same high-voltage box and the interlocking between the ground power supply.

As shown in Figure 1, a high-voltage box is equipped with two warehouse sockets SR, and SP is the socket head for the ground workshop warehouse. MCC is a power supply control contactor for ground storage. The contactor control power can be powered by AC230V (L, N) in the workshop. When the second switch button 302 is pressed on the ground and the first switch button 301 is pressed at the storage socket end, at the same time, because the knife switch control is in the storage position (that is, connected to the SHED position), the storage permission relay in the vehicle circuit is energized. (That is, the coil 107 of the first relay is energized),), then the switch 108 can be closed, and the other bank is covered with a socket cover (the first conductive contact 15 and the second conductive contact 16 are in a short-circuited state), MCC Only when the contactor is powered can the ±375VDC POWER be output to the vehicle, providing ±375VDC high-voltage power.

(2) The one-unit and two-unit libraries are interlocked with sockets and knife switches.

As shown in Figure 1, when both knife switches are turned to the SHED position, the library permission relay is energized, thereby controlling the library permission relay contacts to close. If any knife switch is not in the library use position and the library use permission relay cannot be energized (that is, the coil 107 of the first relay cannot be energized), then the second power supply (that is, the library power supply control power supply, which can be AC230V) The MCC contactor cannot be energized, making it impossible to supply power to the library.

The train adopts M-T-M marshalling type, and the knife switch is in the high-voltage box of the M car's chassis. In this application, vehicles may enter the garage from both sides. Therefore, two sockets for the garage are provided in the high-voltage box, that is, sockets are provided on the outer side of the vehicle.

(3) The two unit libraries are interlocked with socket circuits.

When an HVB library socket is connected to the library power supply, that is, the library power supply contactor MCC is energized, and the contactor contact status is collected through SKS I/O. If there are two unit library sockets connected to the library power supply, the maintenance personnel can be reminded on the HMI display to reserve only one library socket so that the two library sockets do not receive power at the same time.

When the warehouse plug SP (i.e., the warehouse plug 3) is inserted into the socket SR (i.e., the warehouse socket 1) on the vehicle, the third socket electrical contact 13 and the fifth plug electrical contact 35 are connected, and the fourth socket electrical contact 14 is connected to the sixth plug electrical contact 36 , the first socket electrical contact 11 is connected to the first plug electrical contact 31 , and the second socket electrical contact 12 is connected to the second plug electrical contact 32 .

Condition 1: Both sockets of the high-voltage box are connected to the power supply position for the library, that is, connected to SHED (for the library), then the switch 108 can be closed.

Condition 2-1: When one socket cover 2 of the high-voltage box is covered, the conductive block 21 connects the first conductive contact 15 and the second conductive contact 16.

Condition 2-2: The other socket 1 of the high-voltage box is connected to the plug 3 in the library.

If the above conditions are met, a loop can be formed, and coil 61 and coil 62 are connected, then:

(1) The DC 110V loop is turned on, and the IO status can be detected through the first level detection unit 71.

(2) When the ±375V power supply line is connected, the library can supply power to the vehicle.

This invention is aimed at the 3-rail current receiving and 4-rail return power supply system of a certain light rail project, and adopts the solution of two library sockets in each high-voltage box, and proposes a method that satisfies the interlocking and one-unit interlocking between the two library sockets in the high-voltage box. Control scheme for interlocking with the two-unit library socket, interlocking with the knife switch, and interlocking with the ground power supply.

This application is a control scheme and circuit that provides ±375V voltage to the vehicle.

When the cover is closed, the IO module detects a low level. When it is electrically connected to 110V, the IO module detects a high level of 110V.

When the driver's cab key is turned on, the driver's cab is active.

When the key in the driver's cab does not start the vehicle, the driver's cab is in an inactive state. The first driver's cab and the second driver's cab are the head and tail cars of the vehicle.

In the existing technology, the first driver's cab and the second driver's cab cannot be activated at the same time.

The electrical connection point A2 in the first driver's cab and the electrical connection point B2 in the second driver's cab can be electrically connected via a connector connected through each car.

It should be noted that each embodiment in this specification is described in a progressive manner. Each embodiment focuses on its differences from other embodiments. The same and similar parts between the various embodiments are referred to each other. Can.

The embodiments of the present invention have been described in detail above, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the implementation scope of the present invention. All equivalent changes and improvements made within the scope of the present invention shall still fall within the scope of this patent. After reading the present invention, those skilled in the art will make modifications to various equivalent forms of the present invention, all of which fall within the scope defined by the appended claims of this application. The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

Claims (20)

A power supply control device for urban rail vehicles, including a first power supply (201), two garage sockets (1) located on both sides of the urban rail vehicle, and a garage plug (3) located in the garage; The plug (3) in the library is electrically connected to the first power supply (201); the socket (1) for the library is provided with a socket cover (2); it is characterized in that: the socket (1) for the library is connected to the socket cover (2). A first pair of contacts is provided between the plugs (3) in the library; it also includes a first electrical circuit on which a first switch unit and the first pair of contacts are connected in series. The switch unit is closed when the socket cover (2) is closed, and the first contact pair is connected when the plug (3) in the library is inserted into the library socket (1); the first power supply (201) and A second switch unit is provided between the plugs (3) in the library, and the second switch unit is closed when the first electrical circuit forms a closed circuit. The urban rail vehicle power supply control device according to claim 1, characterized in that: the first contact pair includes a first plug electrical contact (31) and a second plug electrical contact provided on the plug (3) in the library. Plug electrical contacts (32), as well as first socket electrical contacts (11) and second socket electrical contacts (12) provided on the library socket (1), the first plug electrical contacts ( 31) Cooperate with the first socket electrical contact (11), and the second plug electrical contact (32) cooperate with the second socket electrical contact (12); The first electrical circuit includes a first power supply end of a second power supply (202), a first plug electrical contact (31), a first socket electrical contact (11), a first switch unit, and a second power supply, which are connected in sequence. A socket electrical contact (12), a second plug electrical contact (32) and a second power supply terminal of a second power supply (202). The urban rail vehicle power supply control device according to claim 2, characterized in that: the first switch unit includes a first conductive contact (15) and a second conductive contact (15) provided on the warehouse socket (1). 16) and a conductive block (21) provided on the socket cover (2); the first conductive contact (15) is electrically connected to the first socket electrical contact (11), and the second conductive contact The point (16) is electrically connected to the second socket electrical contact (12); the conductive block (21) connects the first conductive contact (15) and the second socket cover (2) when the socket cover (2) is closed. Conductive contacts (16). The urban rail vehicle power supply control device according to claim 2 or 3, characterized in that: the second switch unit is a normally open switch of a contactor, and the coil section of the contactor is provided in the second power supply and the library. between plugs. The urban rail vehicle power supply control device according to any one of claims 1 to 3, characterized in that: the first electrical circuit is further provided with a switch unit, and the switch unit is connected to all the switches on the urban rail vehicle. The switches are closed when they are in the library power supply position. The urban rail vehicle power supply control device according to any one of claims 1 to 3, characterized in that: a second contact pair is provided between the warehouse socket (1) and the warehouse plug (3), The second contact pair is connected when the plug (3) in the warehouse is inserted into the warehouse socket (1); one end of the second contact pair is connected to the urban rail vehicle power storage unit (100), and the other end is connected to the power storage unit for the urban rail vehicle. a first level detection unit (71) that detects the level; A fourth switch unit is also provided between the second contact pair and the first level detection unit (71). The fourth switch unit is closed when the first electrical circuit forms a closed loop. The urban rail vehicle power supply control device according to claim 6, characterized in that: the second contact pair includes a third socket electrical contact (13) and a fourth socket electrical contact provided on the library socket. point (14), and the fifth plug electrical contact (35) and the sixth plug electrical contact (36) provided on the plug (3) in the library; the fifth plug electrical contact (35) and The third socket electrical contact (13) mates, and the sixth plug electrical contact (36) mates with the fourth socket electrical contact (14). The urban rail vehicle power supply control device according to claim 6, characterized in that: the fourth switch unit is a normally open switch of a contactor, and the coil section of the contactor is provided between the second power supply (202) and the bank. between the inner plugs (3). The urban rail vehicle power supply control device according to claim 1, characterized in that: a first switch button (301) and a second switch button (302) are also connected in series on the first electrical circuit; the first switch button (301) is located on the garage plug (3), and the second switch button (302) is located in the garage. The urban rail vehicle power supply control device according to claim 5, characterized in that: the urban rail vehicle includes a first driver's cab and a second driver's cab respectively located at both ends of the urban rail vehicle; The high-voltage box of the first driver's cab is provided with an electrical connection point A1, an electrical connection point A2, a first switch (101), a second switch (102), and a first knife switch (105) provided between the electrical connection point A1 and the electrical connection point A2; The high-voltage box of the second driver's cab is provided with an electrical connection point B1, an electrical connection point B2, a third switch (103), a fourth switch (104), and a switch arranged between the electrical connection point B1 and the electrical connection point B2. The second knife switch (106); the electrical connection point A2 and the electrical connection point B2 are electrically connected to each other; One end of the first switch (101) and one end of the second switch (102) are both electrically connected to the electrical connection point A1; One end of the third switch (103) and one end of the fourth switch (104) are both electrically connected to the electrical connection point B1; The other end of the first switch (101) and the other end of the third switch (103) are both electrically connected to the output end of the urban rail vehicle power storage unit (100); The other end of the second switch (102) and the other end of the fourth switch (104) are both electrically connected to the reference ground; The first knife switch (105) and the second knife switch (106) constitute all knife switches on the urban rail vehicle; The urban rail vehicle power supply control device also includes a first relay; There is a first electrical connection between the other end of the second switch (102) and the reference ground,/or between the other end of the fourth switch (104) and the reference ground, and/or between the electrical connection point A2 and the electrical connection point B2. Relay coil(107); The switch (108) in the switch unit is a normally open switch of the first relay; When the first driver's cab is in an activated state, the first switch (101) is in a closed state; When the first driver's cab is in an inactive state, the first switch (101) is in an off state; When the second driver's cab is in the activated state, the third switch (103) is in the closed state; When the second driver's cab is in an inactive state, the third switch (103) is in an off state; The second switch (102) is in an opposite state to the first switch (101), and the fourth switch (104) is in an opposite state to the third switch (103); When the first knife switch (105) is located at the library power supply position, the electrical connection point A1 and the electrical connection point A2 are in the connected state; When the first knife switch (105) is in the non-bank power supply position, the electrical connection point A1 and the electrical connection point A2 are not connected; When the second knife switch (106) is located at the library power supply position, the electrical connection point B1 and the electrical connection point B2 are in the connected state; When the second knife switch (106) is in the non-storehouse power supply position, the electrical connection point B1 and the electrical connection point B2 are in a disconnected state; Preferably, the switches (108) in the switch unit are the same in number as the coils (107) of the first relay and are arranged correspondingly; Preferably, the other end of the second switch (102) and the other end of the fourth switch (104) are electrically connected to the second level detection unit (72) for detecting the level; More preferably, the first driver's cab is provided with electrical connection points A3 and A4; the high-voltage box of the second driver's cab is provided with electrical connection points B3 and B4; the electrical connection points A3 and electrical connection point B3 are both electrically connected to the output end of the urban rail vehicle power storage unit (100); The electrical connection point A4 and the electrical connection point B4 are both electrically connected to the second level detection unit (72); When the first knife switch (105) is located at the power supply position of the external power supply line, the electrical connection point A3 and the electrical connection point A4 are in the connected state; When the first knife switch (105) is located at the non-external power supply line power supply position, the electrical connection point A3 and the electrical connection point A4 are not connected; When the second knife switch (106) is located at the power supply position of the external power supply line, the electrical connection point B3 and the electrical connection point B4 are in the connected state; When the second knife switch (106) is in the non-external power supply line power supply position, the electrical connection point B3 and the electrical connection point B4 are not connected. A power supply control device for an urban rail vehicle, including two warehouse sockets (1) respectively provided on both sides of the urban rail vehicle; The library socket (1) has a first socket power supply connector (1A) and a second socket power supply connector (1B); It is characterized in that the library socket (1) is also provided with a first socket electrical contact (11), a second socket electrical contact (12), and a third socket electrical contact electrically connected to the first socket electrical contact (11). a conductive contact (15) and a second conductive contact (16) electrically connected to the second socket electrical contact (12); The two first socket electrical contacts (11) corresponding to the two library sockets (1) are electrically connected to each other; The two second socket electrical contacts (12) corresponding to the two warehouse sockets (1) are electrically connected to each other; The socket cover (2) of the library socket (1) is also provided with a contact point for contacting both the first conductive contact (15) and the second conductive contact (16) when the socket cover (2) is closed. Conductive block (21). The urban rail vehicle power supply control device according to claim 11, characterized in that: The library socket (1) is also provided with a third socket electrical contact (13) and a fourth socket electrical contact (14); The two third socket electrical contacts (13) corresponding to the two storage sockets (1) of the high-voltage box are both electrically connected to the output end of the urban rail vehicle power storage unit (100); Each fourth socket electrical contact (14) is connected to a first level detection unit (71) for detecting the level. The power supply control device for urban rail vehicles according to claim 11, characterized in that: The urban rail vehicle is also provided with a switch unit that is closed only when all the knife switches on the urban rail vehicle are in the warehouse power supply position; The switch unit is electrically connected between the two corresponding first socket electrical contacts (11) of the two library sockets (1), or is electrically connected between the two corresponding second sockets of the two library sockets (1). between electrical contacts (12). 14. The urban rail vehicle power supply control device according to claim 13, characterized in that the urban rail vehicle includes a first driver's cab and a second driver's cab respectively located at both ends of the urban rail vehicle; The first driver's cab is provided with an electrical connection point A1, an electrical connection point A2, a first switch (101), a second switch (102), and a first knife arranged between the electrical connection point A1 and the electrical connection point A2. switch(105); The second driver's cab is provided with an electrical connection point B1, an electrical connection point B2, a third switch (103), a fourth switch (104), and a second knife arranged between the electrical connection point B1 and the electrical connection point B2. Switch (106); the electrical connection point A2 and the electrical connection point B2 are electrically connected to each other; One end of the first switch (101) and one end of the second switch (102) are both electrically connected to the electrical connection point A1; One end of the third switch (103) and one end of the fourth switch (104) are both electrically connected to the electrical connection point B1; The other end of the first switch (101) and the other end of the third switch (103) are both electrically connected to the output end of the urban rail vehicle power storage unit (100); The other end of the second switch (102) and the other end of the fourth switch (104) are both electrically connected to the reference ground; The first knife switch (105) and the second knife switch (106) constitute all knife switches on the urban rail vehicle; The urban rail vehicle power supply control device also includes a first relay; There is a first electrical connection between the other end of the second switch (102) and the reference ground,/or between the other end of the fourth switch (104) and the reference ground, and/or between the electrical connection point A2 and the electrical connection point B2. Relay coil(107); The switch (108) in the switch unit is a normally open switch of the first relay; When the first driver's cab is in the activated state, the first switch (101) is in the closed state; When the first driver's cab is in an inactive state, the first switch (101) is in an off state; When the second driver's cab is in an activated state, the third switch (103) is in a closed state; When the second driver's cab is in an inactive state, the third switch (103) is in an off state; The second switch (102) is in an opposite state to the first switch (101), and the fourth switch (104) is in an opposite state to the third switch (103); When the first knife switch (105) is located at the warehouse power supply position, the electrical connection point A1 and the electrical connection point A2 are in a connected state; When the first knife switch (105) is in the non-bank power supply position, the electrical connection point A1 and the electrical connection point A2 are not connected; When the second knife switch (106) is located at the library power supply position, the electrical connection point B1 and the electrical connection point B2 are in the connected state; When the second knife switch (106) is in the non-bank power supply position, the electrical connection point B1 and the electrical connection point B2 are not connected; Preferably, the switches (108) in the switch unit are the same in number as the coils (107) of the first relay and are arranged correspondingly; Preferably, the other end of the second switch (102) and the other end of the fourth switch (104) are electrically connected to the second level detection unit (72) for detecting the level; More preferably, the high-voltage box of the first driver's cab is provided with electrical connection points A3 and A4; the high-voltage box of the second driver's cab is provided with electrical connection points B3 and B4; The electrical connection point A3 and the electrical connection point B3 are both electrically connected to the output end of the urban rail vehicle power storage unit (100); the electrical connection point A4 and the electrical connection point B4 are both electrically connected to the second level detection unit (72) ; When the first knife switch (105) is located at the external power supply line power supply position, the electrical connection point A3 and the electrical connection point A4 are in a connected state; When the first knife switch (105) is located at the non-external power supply line power supply position, the electrical connection point A3 and the electrical connection point A4 are not connected; When the second knife switch (106) is located at the power supply position of the external power supply line, the electrical connection point B3 and the electrical connection point B4 are in the connected state; When the second knife switch (106) is in the non-external power supply line power supply position, the electrical connection point B3 and the electrical connection point B4 are not connected. The urban rail vehicle power supply control device according to any one of claims 11 to 14, characterized in that the urban rail vehicle power storage unit (100) is a power storage unit of an urban rail vehicle auxiliary power supply system. A power supply control device in a garage for urban rail vehicles. There is a first power supply (201) in the garage. It is characterized in that the power supply control device in the garage also includes a power supply control device for use with any one of claims 11-15. The warehouse socket (1) of the urban rail vehicle power supply control device matches the warehouse plug (3); One end of the plug (3) in the library is provided with a first plug power supply connector (3A) and a second plug power supply connector (3A) for corresponding connection with the first socket power supply connector (1A) and the second socket power supply connector (1B). 3B), the first plug power supply connector (3A) and the second plug power supply connector (3B) are electrically connected to one power supply end and the other power supply end of the first power supply (201) respectively; One end of the plug (3) in the library is also provided with a first plug electrical contact (31), a second plug electrical contact (31), and a second plug electrical contact (12) for corresponding matching connection with the first socket electrical contact (11) and the second socket electrical contact (12). Plug electrical contacts (32); The urban rail vehicle power supply control device also includes a contactor unit; The garage also has a second power supply (202), and the first plug electrical contact (31) and the second plug electrical contact (32) are respectively connected to one power supply end and the other power supply end of the second power supply (202). One power supply terminal corresponds to an electrical connection; The coil of the contactor unit is electrically connected between the first plug electrical contact (31) and a power supply end of the second power supply (202), or is electrically connected between the second plug electrical contact (32) and the second power supply. Between the other power supply terminals of the power supply (202); The first normally open switch (51) of the contactor unit is electrically connected between the first plug power supply connector (3A) and a power supply end of the first power supply (201); The second normally open switch (52) of the contactor unit is electrically connected between the second plug power supply connector (3B) and the other power supply end of the first power supply (201). The power supply control device in the garage according to claim 16, characterized in that: The warehouse socket (1) is also provided with a third socket electrical contact (13) and a fourth socket electrical contact (14); The two third socket electrical contacts (13) corresponding to the two storage sockets (1) of the high-voltage box are both electrically connected to the output end of the urban rail vehicle power storage unit (100); Each fourth socket electrical contact (14) is connected to a first level detection unit (71) for detecting the level; One end of the plug (3) in the library is also provided with a fifth plug electrical contact (35), a sixth plug electrical contact (35), and a sixth plug electrical contact (14) for corresponding matching connection with the third socket electrical contact (13) and the fourth socket electrical contact (14). Plug electrical contacts (36); The third normally open switch (53) of the contactor unit is connected between the fifth plug electrical contact (35) and the sixth plug electrical contact (36); Preferably, the contactor unit includes a first contactor and a second contactor; the coil (61) of the first contactor and the coil (62) of the second contactor are connected in series to form the contactor unit. The coil, or the coil (61) of the first contactor and the coil (62) of the second contactor are connected in parallel to form the coil of the contactor unit; the first normally open switch (51), the second normally open switch (51) and the second normally open switch The open switches (52) are all normally open switches of the first contactor; the third normally open switch (53) is a normally open switch of the second contactor. A power supply control device in a garage for urban rail vehicles. The garage has a first power supply (201) and an internal plug (3) used to cooperate with the garage socket (1) of the urban rail vehicle; One end of the plug (3) in the library is provided with a first plug power supply connector (3A) and a second plug power supply connector (3B). The first plug power supply connector (3A), the second plug power supply connector (3B) and the third plug power supply connector (3B). One power supply end and the other power supply end of a power supply (201) are electrically connected respectively; It is characterized in that one end of the plug (3) in the library is also provided with a first plug electrical contact (31) and a second plug electrical contact (32); The urban rail vehicle power supply control device also includes a contactor unit; The garage also has a second power supply (202), and the first plug electrical contact (31) and the second plug electrical contact (32) are respectively connected to one power supply end and the other power supply end of the second power supply (202). One power supply terminal corresponds to an electrical connection; The coil of the contactor unit is electrically connected between the first plug electrical contact (31) and one power supply end of the second power supply (202), or is electrically connected between the second plug electrical contact (32) and the other power supply end of the second power supply (202); The first normally open switch (51) of the contactor unit is electrically connected between the first plug power supply connector (3A) and a power supply end of the first power supply (201); The second normally open switch (52) of the contactor unit is electrically connected between the second plug power supply connector (3B) and another power supply end of the first power supply (201). The power supply control device in a garage according to claim 18, characterized in that the contactor unit is a first contactor; the first normally open switch (51) and the second normally open switch (52) are both A normally open switch for a contactor. The power supply control device in a garage according to claim 18, characterized in that one end of the garage plug (3) is also provided with a fifth plug electrical contact (35) and a sixth plug electrical contact (36); The third normally open switch (53) of the contactor unit is connected between the fifth plug electrical contact (35) and the sixth plug electrical contact (36); preferably, the contactor unit includes a third A contactor and a second contactor; the coil (61) of the first contactor and the coil (62) of the second contactor are connected in series to form the coil of the contactor unit, or the coil of the first contactor The coil (61) and the coil (62) of the second contactor are connected in parallel to form the coil of the contactor unit; the first normally open switch (51) and the second normally open switch (52) are both first contact The normally open switch of the second contactor; the third normally open switch (53) is the normally open switch of the second contactor. The power supply control device in the garage according to claim 16 or 18, characterized in that: The other end of the plug (3) in the library is provided with a third plug power supply connector (3C) and a fourth plug power supply connector (3C) that are electrically connected to the first plug power supply connector (3A) and the second plug power supply connector (3B) respectively. 3D); The other end of the plug (3) in the library is provided with a third plug electrical contact (33) and a fourth plug electrically connected to the first plug electrical contact (31) and the second plug electrical contact (32) respectively. Electrical contacts(34); The third plug power supply connector (3C) and the fourth plug power supply connector (3D) are electrically connected to one power supply end and the other power supply end of the first power supply (201) respectively; The third plug electrical contact (33) and the fourth plug electrical contact (34) are electrically connected to one power supply end and the other power supply end of the second power supply (202) respectively; Preferably, there is an electrical connection between the first plug electrical contact (31) and the third plug electrical contact (33) or between the second plug electrical contact (32) and the fourth plug electrical contact (34). Connected with a first switch button (301); Preferably, a second switch button (302) is electrically connected between the third plug electrical contact (33) and one power supply end of the second power supply (202) or between the fourth plug electrical contact (34) and another power supply end of the second power supply (202); Preferably, the contactor unit is arranged in a power cabinet in a garage; the first normally open switch (51) of the contactor unit is electrically connected between the third plug power connector (3C) and one power supply end of the first power supply (201); the second normally open switch (52) of the contactor unit is electrically connected between the fourth plug power connector (3D) and another power supply end of the first power supply (201); the coil of the contactor unit is electrically connected between the fourth plug electrical contact (34) and another power supply end of the second power supply (202) or between the third plug electrical contact (33) and one power supply end of the second power supply (202); Preferably, the contactor unit is provided on the plug (3) in the library; the first normally open switch (51) of the contactor unit is electrically connected between the first plug power supply connector (3A) and the third plug power supply connector (3A). 3C); the second normally open switch (52) of the contactor unit is electrically connected between the second plug power supply connector (3B) and the fourth plug power supply connector (3D); the coil of the contactor unit is electrically connected The connection is between the second plug electrical contact (32) and the fourth plug electrical contact (34) or between the first plug electrical contact (31) and the third plug electrical contact (33).

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