CN217183025U

CN217183025U - Urban single-rail emergency power supply device

Info

Publication number: CN217183025U
Application number: CN202220449487.1U
Authority: CN
Inventors: 黄茂战; 杨锟; 丁富骏
Original assignee: NANJING HUASHI ELECTRONIC SCIENTIFIC CO Ltd
Current assignee: NANJING HUASHI ELECTRONIC SCIENTIFIC CO Ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-08-12
Anticipated expiration: 2032-03-02

Abstract

The utility model provides a single track emergency power supply device in city, including lithium ion battery group, high-voltage electrical system, low pressure electrical system, gateway, communication connector, input/output connector, communication connector, wherein high-voltage electrical system contains contactor one, diode, fuse one, hall current sensor, fuse two and contactor two, and low pressure electrical system contains electric starting switch, relay, DC-DC power and battery management system. The utility model has the advantages of, energy-concerving and environment-protective, safe and reliable, be convenient for carry out information interaction with different communication type vehicles.

Description

Urban single-rail emergency power supply device

Technical Field

The utility model relates to a public transport field especially relates to city single track emergency power supply device.

Background

With the continuous improvement of the urbanization level of China, the urban population is continuously increased, so that the problem of urban traffic jam is more and more prominent. Therefore, in order to improve urban traffic, some medium and large cities begin to build traffic systems such as subways, light rails, and single rails. The monorail transit system is low in noise and low in investment, and can be continuously developed by effectively utilizing urban space. However, in the event of a mains power outage during operation of the railcar, a battery backup is required to power its associated infrastructure in order to avoid panic and timely evacuation of passengers.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a single rail emergency power supply device in city.

Realize the utility model discloses the technical solution of purpose does: an urban single-rail emergency power supply device comprises a lithium ion battery pack, a high-voltage electrical system, a low-voltage electrical system, a gateway, a communication connector, an input/output connector and a communication connector;

the high-voltage electrical system comprises a first contactor, a diode, a first fuse, a Hall current sensor, a second fuse and a second contactor, wherein the anode of the lithium ion battery pack is connected with the first fuse in the high-voltage system; the negative electrode of the lithium ion battery pack is connected with a busbar, the busbar penetrates through the current sensor and is connected with a second fuse, the second fuse is connected with a second contactor, and the second contactor is connected with an output connector;

the low-voltage electric system comprises an electric starting switch, a relay, a DC-DC power supply and a battery management system, wherein the positive electrode and the negative electrode of the lithium ion battery pack are connected with the electric starting switch, one end of the electric starting switch is connected with a vehicle-end battery switch in series, the other end of the electric starting switch is connected with the negative electrode of the DC-DC power supply, the vehicle-end battery switch is connected with the relay in series, the relay is connected with the positive electrode end of the DC-DC power supply and is connected with the vehicle-end battery starting switch in parallel, the DC-DC power supply is connected with the battery management system, and the battery management system is connected with the lithium ion battery pack;

the gateway is respectively connected with the battery management system and the communication connector; the positive electrode of the input end of the charger is connected between the first contactor and the input/output connector, and the negative electrode of the input end of the charger is connected between the second contactor and the input/output connector; the positive pole of the output end of the charger is connected with the three-phase of the contactor, the third contactor is connected between the diode and the first fuse, the negative pole of the output end of the charger is connected with the fourth contactor, and the fourth contactor is connected between the second contactor and the second fuse.

Furthermore, the lithium ion battery pack is formed by connecting a plurality of battery modules in series and parallel, and one battery module is formed by connecting a plurality of battery cells in series and parallel.

Furthermore, the battery management system comprises a BMS slave controller and a BMS master controller, wherein the DC-DC power supply is connected with the BMS master controller, the BMS master controller is connected with the BMS slave controller, and the BMS slave controller is connected with the voltage and temperature acquisition wire harness of the lithium ion battery pack.

Further, the lithium ion battery module assembly structure further comprises a metal box body for integration, and a lithium ion battery module support is welded in the metal box body.

Furthermore, a diode radiator is welded on the metal box body 01.

Furthermore, the metal box body and the diode radiator are made of the same material.

Further, a battery management system insulation board is arranged on the metal box body 01.

Further, the high-voltage electrical system and the low-voltage electrical system are separately arranged.

Furthermore, the device also comprises a smoke detection device, and the smoke detection device is connected with the battery management system.

Compared with the prior art, the utility model, its advantage does: 1) the appropriate lithium ion battery can be selected for configuration according to the requirements of the monorail vehicle, so that the energy is saved and the environment is protected; 2) the high-voltage system and the low-voltage system are separately arranged, so that the operation is convenient, safe and reliable; 3) an electric starting switch is added in a control loop to prevent the battery from over-discharging caused by the continuous power consumption of the BMS due to the fact that a storage battery switch at the vehicle end is forgotten to be switched off or the switch is blocked; 4) a master-slave Battery Management System (BMS) is adopted, so that the information of a plurality of battery modules can be collected, and intelligent management is facilitated; 5) the gateway can convert the information of a Battery Management System (BMS) into communication types in various forms, and is convenient for information interaction with vehicles with different communication types.

Drawings

Fig. 1 is an appearance diagram of the utility model relates to an urban single-rail emergency power supply device.

Fig. 2 is the power interface and communication interface position diagram of the utility model relates to an urban single-rail emergency power supply device.

Fig. 3 is the utility model relates to a single track emergency power supply device's in city radiator position diagram.

Fig. 4 is the utility model relates to a single track emergency power supply unit's in city high voltage system region, low pressure system region and lithium ion battery group position map.

Fig. 5 is a schematic block diagram of the utility model relates to an urban single-rail emergency power supply device.

01. A metal case; 02. an input-output connector; 03. a communication connector; 04. a heat sink; 05. a lithium ion battery pack; 06. a high voltage electrical system; 07. a low-voltage electrical system; 08. a lithium ion battery module support; 20. a first contactor; 21. a diode; 22. a first fuse; 23 hall current sensors; a second 24 fuse; 25. a second contactor; 26. an input-output connector; 27. a third contactor; 28. a contactor IV; 29. a charger; 30. BMS slave control; 31. an electrical start switch; 32. a relay; 33. a DC-DC power supply; 34. BMS master control; 35. a gateway; 36. a smoke detection device; 37. a communication connector.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The utility model discloses a single rail emergency power supply device in city mainly includes metal box 01, input/output connector 02, communication connector 03, radiator 04, lithium ion battery group 05, high-voltage electrical system 06, low pressure electrical system 07, gateway 35, smog detection device 36, communication connector 37.

The utility model discloses a single track emergency power supply unit in city, its core power supply unit are lithium ion battery group 05, and lithium ion battery group 05 comprises a plurality of battery module series-parallel connections, and a battery module comprises a plurality of electric core series-parallel connections again.

The utility model discloses a single rail emergency power supply device in city contains contactor one 20, diode 21, fuse one 22, hall current sensor 23, two 24 of fuse, two 25 of contactor in high-voltage electrical system 06. The anode of the lithium ion battery pack 05 is connected with a first fuse 22 in a high-voltage system, the first fuse 22 is connected with a diode 21, the diode 21 is connected with a first contactor 20, and the first contactor 20 is connected with an output connector 26. The first fuse 22 is used for protecting the lithium ion battery pack 05 and other related components from being damaged when the main loop is short-circuited; the diode 21 is used for preventing external high-voltage power from directly charging the lithium ion battery pack 05, so that the lithium ion battery pack 05 is protected; the first contactor 20 is used for controlling the on-off of a power supply line of the main loop.

And the negative electrode of the lithium ion battery pack 05 is connected with a bus bar, the bus bar penetrates through the current sensor 23 and is connected with the second fuse 24, the second fuse 24 is connected with the second contactor 25, and the second contactor 25 is connected with the output connector 26. The second fuse 24 and the second contactor 25 have the same functions as the first fuse 22 and the first contactor 20, and the purpose of adding the contactors and the fuses in the positive electrode circuit and the negative electrode circuit is to play a role in double protection.

The utility model discloses a single rail emergency power supply unit in city contains BMS slave control 30, electric starting switch 31, relay 32, DC-DC power 33, BMS master control 34 among the low voltage electrical system 07.

The positive pole and the negative pole of the lithium ion battery pack 05 are connected with an electric starting switch 31, one end of the electric starting switch 31 is connected with a vehicle end battery switch in series, the other end of the electric starting switch 31 is connected with the negative pole of a DC-DC power supply 33, the vehicle end battery switch is connected with a relay 32 in series, the relay 32 is connected with the positive pole end of the DC-DC power supply 33 and connected with the vehicle end battery starting switch in parallel, the DC-DC power supply 33 is connected with a BMS main control unit 34, the BMS main control unit 34 is connected with a BMS slave control unit 30, and the BMS slave control unit 30 is connected with a voltage and temperature acquisition wiring harness of the lithium ion battery pack 05. The electric starting switch 31 is used for preventing the battery from being over-discharged due to the continuous power consumption of the BMS caused by the fact that a storage battery switch at the vehicle end is forgotten to be switched off or the switch is blocked, and the electric performance degradation caused by the over-discharge of the battery can be effectively avoided; the relay 32 is used for controlling the on-off of a low-voltage system; the DC-DC power supply 33 functions to increase or decrease the voltage of the lithium ion battery pack to reach the operating voltage of the BMS main control 34; the BMS main control 34 is used for data processing, storage, fault judgment and external communication; the BMS slave control 30 module is used for battery voltage, temperature acquisition and battery equalization.

The utility model discloses a single rail emergency power supply device in city, its machine 29 that charges is integrated in metal box 01, charge machine 29 and battery management system real-time communication to select the optimum current to charge for lithium ion battery group 05 according to current lithium ion battery group 05 states. The positive electrode of the input end of the charger 29 is connected to the bus bar between the first contactor 20 and the input/output connector 26, and the negative electrode of the input end of the charger 29 is connected to the bus bar between the second contactor 25 and the input/output connector 26; the positive pole of the output end of the charger 29 is connected with the third contactor 27, the third contactor 27 is connected to the bus bar between the diode 21 and the first fuse 22, the negative pole of the output end of the charger 29 is connected with the fourth contactor 28, and the fourth contactor 28 is connected to the bus bar between the second contactor 25 and the second fuse 24. The third contactor 27 and the fourth contactor 28 are used for controlling the on-off of the charging loop, and the purpose that the contactors are additionally arranged in the output positive electrode circuit and the output negative electrode circuit of the charger 29 is to play a role of double protection during charging.

The utility model discloses a single rail emergency power supply device in city, metal box 01 contain box covering, front and back door plant, box horizontal longitudinal beam, anticreep round pin, installing support and square lock etc. and the welding has lithium ion battery module support 08 in the metal box 01. The metal box body 01 and the lithium ion battery module bracket 08 are made of aluminum alloy materials, and the weight of the metal box body and the lithium ion battery module bracket can be reduced while the strength is ensured by selecting the aluminum alloy materials. The bottom of the metal box body 01 is welded with a radiator 04. The radiator is made of aluminum alloy and is used for radiating the diode 21. The insulation board is arranged at the installation part of the BMS master control module and the BMS slave control module and is used for preventing the master control module and the slave control module from being endangered when the metal box body leaks electricity.

The utility model discloses a single rail emergency power supply unit in city, gateway 35 are connected with BMS main control 34 and communication connector 37 respectively, and smoke detection device 36 is connected with BMS main control 34. The gateway is used as a transfer station for information conversion, and CAN convert CAN communication protocol data information of a battery management system into CAN open communication protocol data information required by a vehicle end in the example, so that information interaction with the vehicle is facilitated; the smoke detection device is used for detecting whether smoke is generated in the battery box body, particularly, smoke generated when short circuit occurs in the device or the battery is out of control due to heat, and can timely send alarm information to the battery management system, and the battery management system performs corresponding protection actions.

The utility model discloses an urban single-rail emergency power supply device, the high-voltage system and the low-voltage system are separately arranged; the input/output connector and the communication connector are arranged outside the metal shell.

The utility model discloses an urban single-rail emergency power supply device can select a proper lithium ion battery to configure according to the requirements of a single-rail vehicle, thereby saving energy and protecting environment; the high-voltage system and the low-voltage system are separately arranged, so that the operation is convenient, safe and reliable; an electric starting switch is creatively added into a control loop, so that the battery overdischarge caused by the continuous power consumption of the BMS due to the fact that a storage battery switch at the vehicle end is forgotten to be switched off or the switch is blocked is prevented; a master-slave battery management system is adopted, so that the information of a plurality of battery modules can be collected, and intelligent management is facilitated; the gateway can convert the information of the battery management system into communication types in various forms, and information interaction with vehicles of different communication types is facilitated. The utility model discloses can provide the basis for the formulation of future urban single track extensive popularization emergency power supply device standard.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An urban single-rail emergency power supply device is characterized by comprising a lithium ion battery pack, a high-voltage electrical system, a low-voltage electrical system, a gateway, a communication connector, an input/output connector and a communication connector;

2. The urban monorail emergency power supply device of claim 1, wherein the lithium ion battery pack is composed of a plurality of battery modules connected in series and parallel, and one battery module is composed of a plurality of battery modules connected in series and parallel.

3. The urban monorail emergency power supply device according to claim 1, wherein the battery management system comprises a BMS slave 30 and a BMS master 34, the DC-DC power supply 33 is connected to the BMS master 34, the BMS master 34 is connected to the BMS slave 30, and the BMS slave 30 is connected to a voltage and temperature acquisition harness of the lithium ion battery pack 05.

4. The urban monorail emergency power supply device of claim 1, further comprising a metal box for integration, wherein a lithium ion battery module support is welded into the metal box.

5. The urban monorail emergency power supply device of claim 4, wherein a diode radiator is welded on the metal box body 01.

6. The urban monorail emergency power supply device of claim 5, wherein the metal box and the diode radiator are made of the same material.

7. The urban monorail emergency power supply device of claim 4, wherein a battery management system insulation board is arranged on the metal box body 01.

8. The urban monorail emergency power supply device of claim 1, wherein said high-voltage electrical system and low-voltage electrical system are arranged separately.

9. The urban monorail emergency power supply device of claim 1, further comprising a smoke detection device connected to a battery management system.