阅读说明：本技术 一种供电装置和轨道车辆 (Power supply unit and rail vehicle ) 是由 付稳超 尚国权 雷佩 孙海波 邹继行 于 2021-08-04 设计创作，主要内容包括：本申请实施例中提供了一种供电装置和轨道车辆,该供电装置应用于运行于电气化线路的轨道车辆,供电装置包括第一逆变模块、蓄电模块和供电管理模块,蓄电模块通过供电管理模块与第一逆变模块电连接,第一逆变模块与制氧压缩机电连接；在过分相断电的情况下,供电管理模块用于将蓄电模块产生的第一直流电压升压为第二直流电压,并将第二直流电压提供至第一逆变模块；第一逆变模块用于将第二直流电压逆变为交流电压,并将交流电压提供至制氧压缩机。采用本申请提供的供电装置在过分相断电的情况下,为制氧压缩机持续供电,保证制氧压缩机正常工作,为客室持续提供氧气,保证乘客安全,提高轨道车辆的供氧稳定性。(The embodiment of the application provides a power supply device and a railway vehicle, wherein the power supply device is applied to the railway vehicle running on an electrified line and comprises a first inversion module, an electric storage module and a power supply management module, the electric storage module is electrically connected with the first inversion module through the power supply management module, and the first inversion module is electrically connected with an oxygen generation compressor; under the condition of split-phase power failure, the power supply management module is used for boosting the first direct-current voltage generated by the power storage module into a second direct-current voltage and providing the second direct-current voltage to the first inverter module; the first inversion module is used for inverting the second direct-current voltage into alternating-current voltage and providing the alternating-current voltage to the oxygen production compressor. Adopt the power supply unit that this application provided under the condition of passing the looks outage, for the oxygen generation compressor lasts the power supply, guarantee oxygen generation compressor normal work, for the guest room lasts provides oxygen, guarantee passenger safety, improve rail vehicle's oxygen suppliment stability.)

1. The power supply device is applied to a rail vehicle running on an electrified line and comprises a first inverter module, an electric storage module and a power supply management module, wherein the rail vehicle comprises an oxygen generation compressor, the electric storage module is electrically connected with the first inverter module through the power supply management module, and the first inverter module is electrically connected with the oxygen generation compressor;

under the condition of split-phase power failure, the power supply management module is used for boosting a first direct-current voltage generated by the power storage module into a second direct-current voltage and providing the second direct-current voltage to the first inverter module;

the first inversion module is used for inverting the second direct-current voltage into an alternating-current voltage and providing the alternating-current voltage to the oxygen production compressor.

2. The power supply device according to claim 1, wherein the first inverter module is further electrically connected to a power supply main line;

in the case of an over-split phase power outage, the supply backbone is configured to stop providing the third dc voltage to the first inverter module;

under the condition that the power supply main line normally supplies power, the power supply main line is used for providing the third direct-current voltage for the first inversion module;

the first inversion module is also used for inverting the third direct-current voltage into the alternating-current voltage and providing the alternating-current voltage to the oxygen production compressor;

the power supply management module is also used for stopping working under the condition that the power supply main line supplies power normally.

3. The power supply device according to claim 2, further comprising a second inverter module and a diode a, wherein an anode of the diode a is electrically connected to both the power supply main line and the second inverter module, a cathode of the diode a is electrically connected to both the first inverter module and the power supply management module, and the second inverter module is further electrically connected to a load module;

under the condition that the power supply main line supplies power normally, the power supply main line is also used for supplying the third direct-current voltage to the second inversion module;

the second inversion module is used for inverting the third direct-current voltage into the alternating-current voltage and providing the alternating-current voltage to the load module;

in the case of an over-split phase power outage, the supply backbone is further configured to stop providing the third dc voltage to the second inverter module.

4. The power supply device according to claim 3, further comprising a first switch, wherein the first inverter module is electrically connected to the second inverter module through the first switch;

under the condition that the power supply main line supplies power normally, if the first inverter module breaks down, the second inverter is also used for supplying the alternating-current voltage to the oxygen generation compressor through the first switch;

under the condition that the power supply main line supplies power normally, if the second inverter module fails, the first inverter is further used for supplying the alternating-current voltage to the load module through the first switch.

5. The power supply device according to claim 3, further comprising an isolation transformer, wherein the load module comprises a first load unit and a second load unit, wherein the second inverter module is electrically connected to the first load unit through the isolation transformer, and wherein the second inverter module is electrically connected to the second load unit.

6. The power supply device according to claim 3, further comprising a diode B, an anode of the diode B being electrically connected to both the anode of the diode A and the power supply main line, and a cathode of the diode B being electrically connected to the second inverter module.

7. The power supply device according to claim 1, wherein the power storage module includes a first battery pack and a second battery pack, the first battery pack is connected in series with the second battery pack, and the power supply management module is electrically connected to the first battery pack and the second battery pack.

8. The power supply device of claim 1, wherein the power management module is further configured to stop operation if a shutdown condition is met.

9. The power supply unit according to claim 2, wherein the oxygen generation compressor comprises a first oxygen generation compressor and a second oxygen generation compressor, and the first inverter module is electrically connected with both the first oxygen generation compressor and the second oxygen generation compressor;

under the condition of excessive phase separation and power failure, one oxygen generation compressor of the first oxygen generation compressor and the second oxygen generation compressor is in a working state, and the other oxygen generation compressor is in a standby state in a standby mode;

and under the condition that the power supply main line supplies power normally, the first oxygen generation compressor and the second oxygen generation compressor are both in working states.

10. A rail vehicle comprising an oxygen generating compressor and a power supply apparatus according to any one of claims 1 to 9, the rail vehicle operating on an electrified line.

Technical Field

The application relates to the technical field of rail transit, in particular to a power supply device and a rail vehicle.

Background

The Qinghai-Tibet railway is a plateau railway with the highest altitude and the longest route in the world at present, and is operated comprehensively. From gelmu to lassa, the whole length is 1142 kilometers, 960 kilometers are reserved in a section passing over 4000 meters of altitude along the way, and the altitude crosses 5072 meters of the highest point of the railway in tangula. The higher the altitude, the leaner the air, and the lower the oxygen content. In the line of Qinghai-Tibet railway with the altitude of 4000 meters, the oxygen content in the atmosphere is only about 60 percent of that in plain areas, the altitude is in a section of 5000 meters, the oxygen content in the atmosphere is only about 53 percent of that in plain areas, and the hypoxia brings great influence on the health of people and often causes altitude sickness. Therefore, a railway passenger car operating on a plateau railway must have an oxygen supply function.

Problems existing in the prior art:

at present, the railway passenger car with partial lines has the problem that an oxygen generation system is unstable in work, so that the oxygen in a passenger room is low, the health of passengers is influenced, and even the life is threatened.

Disclosure of Invention

The embodiment of the application provides a power supply unit and rail vehicle, can guarantee incessant supplying power to the oxygen generation compressor under the condition of passing the phase separation outage, guarantee that the oxygen generation compressor normally works, improve rail vehicle's oxygen suppliment stability.

According to a first aspect of the embodiments of the present application, there is provided a power supply device applied to a rail vehicle running on an electrified line, the power supply device including a first inverter module, an electric storage module and a power supply management module, the rail vehicle including an oxygen generation compressor, the electric storage module being electrically connected to the first inverter module through the power supply management module, the first inverter module being electrically connected to the oxygen generation compressor;

under the condition of split-phase power failure, the power supply management module is used for boosting a first direct-current voltage generated by the power storage module into a second direct-current voltage and providing the second direct-current voltage to the first inverter module;

the first inversion module is used for inverting the second direct-current voltage into an alternating-current voltage and providing the alternating-current voltage to the oxygen production compressor.

According to a second aspect of the embodiments of the present application, there is provided a rail vehicle comprising an oxygen generation compressor and the power supply apparatus of the first aspect, the rail vehicle being operated on an electrified line.

By adopting the power supply device and the rail vehicle provided by the embodiment of the application, the power supply device is applied to the rail vehicle running on an electrified line, the power supply device comprises a first inversion module, a power storage module and a power supply management module, the power storage module is electrically connected with the first inversion module through the power supply management module, and the first inversion module is electrically connected with the oxygen generation compressor; under the condition of split-phase power failure, the power supply management module is used for boosting the first direct-current voltage generated by the power storage module into a second direct-current voltage and providing the second direct-current voltage to the first inverter module; the first inversion module is used for inverting the second direct-current voltage into alternating-current voltage and providing the alternating-current voltage to the oxygen production compressor. Therefore, under the condition of passing neutral section and cutting off power, the power storage module, the power supply management module and the first inversion module supply power to the oxygen generation compressor, so that the normal work of the oxygen generation compressor is ensured, oxygen is continuously provided for a passenger room, and the safety of passengers is ensured. Meanwhile, the uninterrupted power supply is provided for the oxygen generation compressor, so that the service life of the oxygen generation compressor can be ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a rail vehicle according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a power supply device according to an embodiment of the present disclosure;

FIG. 3 is a schematic layout view of a power storage module according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of another power supply device according to an embodiment of the present application.

The figure is as follows: 100-a rail vehicle; 110-a power supply; 111-a first inverter module; 112-an electric storage module; 113-a power supply management module; 114-a second inverter module; 115-diode a; 116-a first switch; 117-isolation transformer; 118-diode B; 119-a second switch; 120-an oxygen generating compressor; 121-a first oxygen generating compressor; 122-a second oxygen generation compressor; 130-supply mains; 140-a load module; 141-a first load unit; 142-a second load unit; 150-a charger; 160-Integrated management Module.

Detailed Description

In the process of realizing the application, the inventor finds that at present, part of plateau railway line sections are non-electrified lines, a railway passenger car is towed by an internal combustion locomotive, and a power generation car supplies power to a whole train, so that the problem of excessive phase-splitting power failure is not involved. The electrification line is continuously reformed in China, and a power supply mode of a power generation car is cancelled. The electrified line has the problem of excessive phase interruption power supply, which directly influences an oxygen generation system to cause system shutdown and low oxygen in a passenger room, thereby influencing the health of passengers and even endangering life. Meanwhile, frequent power failure can greatly reduce the service life of the oxygen generation system.

In view of the above problems, the present application provides a power supply device and a rail vehicle, the power supply device is applied to a rail vehicle running on an electrified line, the power supply device includes a first inverter module, a power storage module and a power supply management module, the rail vehicle includes an oxygen generation compressor, the power storage module is electrically connected with the first inverter module through the power supply management module, and the first inverter module is electrically connected with the oxygen generation compressor; under the condition of split-phase power failure, the power supply management module is used for boosting the first direct-current voltage generated by the power storage module into a second direct-current voltage and providing the second direct-current voltage to the first inverter module; the first inversion module is used for inverting the second direct-current voltage into alternating-current voltage and providing the alternating-current voltage to the oxygen production compressor. Therefore, under the condition of passing neutral section and cutting off power, the power storage module, the power supply management module and the first inversion module supply power to the oxygen generation compressor, so that the normal work of the oxygen generation compressor is ensured, oxygen is continuously provided for a passenger room, and the safety of passengers is ensured. Meanwhile, the uninterrupted power supply is provided for the oxygen generation compressor, so that the service life of the oxygen generation compressor can be ensured.

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Referring to fig. 1, a schematic structural diagram of a railway vehicle 100 according to an embodiment of the present disclosure is shown, where the railway vehicle 100 includes an oxygen generation compressor 120 and a power supply device 110, and the oxygen generation compressor 120 is electrically connected to the power supply device 110. In which the rail vehicle 100 runs on an electrified line.

In the event of excessive phase separation power outage, the power supply 110 is used to power the oxygen generation compressor 120. The uninterrupted power supply is provided for the oxygen making compressor 120, so that oxygen is continuously provided for the passenger room, and the safety of passengers is ensured. Meanwhile, the oxygen generation compressor 120 is continuously supplied with power, so that the service life of the oxygen generation compressor 120 can be ensured.

It should be understood that the power supply device 110 is disposed at each car of the railway vehicle 100, and the power supply device 110 may be disposed under the car. The rail vehicle 100 is a railway train operated on a plateau railway, or a vehicle that needs to supply oxygen to a passenger compartment.

Referring to fig. 2, which is a schematic structural diagram of the power supply apparatus 110 shown in fig. 1, the power supply apparatus 110 includes a first inverter module 111, a power storage module 112 and a power supply management module 113, the power storage module 112 is electrically connected to the first inverter module 111 through the power supply management module 113, and the first inverter module 111 is electrically connected to the oxygen generation compressor 120.

In the case of split-phase power outage, the power supply management module 113 is configured to boost the first dc voltage generated by the power storage module 112 to a second dc voltage, and provide the second dc voltage to the first inverter module 111; the first inverter module 111 is configured to invert the second dc voltage into an ac voltage and provide the ac voltage to the oxygen generation compressor 120.

It should be appreciated that the power storage module 112 includes a first battery pack and a second battery pack, the first battery pack being connected in series with the second battery pack, and the power supply management module 113 being electrically connected to the first battery pack and the second battery pack.

The first battery pack and the second battery pack can constitute a 110V power storage module 112, and the first battery pack and the second battery pack are respectively formed by connecting 39 single storage batteries in series.

The first battery pack and the second battery pack may be chemical cells, and are schematically arranged as shown in fig. 3. The first storage battery pack and the second storage battery pack are formed by connecting 78 single storage batteries in series. The liquid injection nozzle is an inlet for injecting chemical liquid, the liquid discharge nozzle is an outlet for discharging the chemical liquid, and the total anode and the total cathode are both electrically connected with the power supply management module 113.

The power supply management module 113 is a dc boost module, and is configured to boost a first dc voltage of 110V provided by the power storage module 112 to a second dc voltage of 600V.

The first inverter module 111 may be an inverter having a capacity of 50kVA, and is configured to invert the second dc voltage of 600V provided by the power supply management module 113 into an ac voltage of 380V.

As shown in fig. 4, the first inverter module 111 is also electrically connected to the power supply trunk line 130; in the case of an over-split phase power outage, the supply backbone 130 is used to stop providing the third dc voltage to the first inverter module 111; in case the power supply main line 130 is normally powered, the power supply main line 130 is used to provide the third dc voltage to the first inverter module 111; the first inversion module 111 is further configured to invert the third dc voltage into an ac voltage and provide the ac voltage to the oxygen generation compressor 120; the power management module 113 is also configured to stop operating in the case where the power supply main line 130 is normally powered.

It should be appreciated that in the case of an over-split power outage, the supply rail 130 is in an outage state and the supply rail 130 has no third dc voltage. At this time, in order to ensure that the oxygen generation compressor 120 can continue to work and continuously supply oxygen to the passenger compartment, the power supply management module 113 boosts the first dc voltage generated by the power storage module 112 to a second dc voltage, and supplies the second dc voltage to the first inverter module 111; the first inverter module 111 inverts the second dc voltage into an ac voltage and provides the ac voltage to the oxygen generation compressor 120, so as to ensure the oxygen generation compressor 120 to work continuously.

In the case where the supply backbone 130 is normally supplying, the supply backbone 130 has a third dc voltage. At this time, the third dc voltage is provided to the first inverter module 111 by the power supply main line 130, and the power supply management module 113 stops operating, that is, stops providing the second dc voltage to the first inverter module 111.

That is, in the case where the power supply main line 130 supplies power normally, the power supply main line 130 supplies power to the oxygen generation compressor 120; in the event of an excessive phase separation power outage, power is supplied to the oxygen generation compressor 120 by the storage module 112 and the power management module 113.

The normal start logic of the power supply management module 113 is that, after receiving the normal signal sent by the first inverter module 111, the power supply management module 113 starts according to the normal signal and is in a hot standby state; when passing the neutral section, the power management module 113 receives the neutral section passing signal, and operates according to the neutral section passing signal to boost the first dc voltage to the second dc voltage. The power supply management module 113 can also be started in an emergency, when the power supply management module 113 receives an emergency working condition signal and a power-off state signal of the power supply main line 130, the power supply management module 113 operates at intervals, and boosts the first direct-current voltage into a second direct-current voltage in an operation stage; wherein, the power management module 113 runs for no more than 10 minutes each time.

In the present embodiment, the rail vehicle 100 further includes a charger 150, and the charger 150 is electrically connected to both the power storage module 112 and the power supply management module 113. The charger 150 is used for charging the power storage module 112, and the charger 150 is also used for providing the power supply management module 113 with working voltage.

The power management module 113 is also configured to stop operating if a shutdown condition is satisfied. The shutdown condition includes that the power supply management module 113 receives a fault signal fed back by the charger 150, the power supply management module 113 receives a load shedding signal fed back by the first inverter module 111, the power supply management module 113 receives an excessive phase-free advance notice signal, an emergency working condition-free signal and a power failure state signal of the power supply main line 130, the power supply management module 113 detects an undervoltage signal of itself or receives an undervoltage signal fed back by the charger 150, and the power supply management module 113 receives an emergency exit signal.

In the present embodiment, in order to ensure the cruising ability of the power storage module 112, the oxygen generation compressor 120 needs to be deloaded in the case of excessive phase interruption. It should be understood that the oxygen generation compressor 120 includes a first oxygen generation compressor 121 and a second oxygen generation compressor 122, and the first inverter module 111 is electrically connected to both the first oxygen generation compressor 121 and the second oxygen generation compressor 122; in the case of excessive phase-splitting power failure, one oxygen generation compressor 120 of the first oxygen generation compressor 121 and the second oxygen generation compressor 122 is in an operating state, and the other oxygen generation compressor 120 is in a standby state. Under normal conditions, both the first oxygen generation compressor 121 and the second oxygen generation compressor 122 are in operation.

That is, in the case of excessive phase-splitting power failure, one of the first oxygen generation compressor 121 and the second oxygen generation compressor 122 is controlled to operate, and the other is in standby, so that the load of the oxygen generation compressor 12055% can be reduced.

Referring to fig. 4, the power supply device 110 further includes a second inverter module 114 and a diode a115, an anode of the diode a115 is electrically connected to the power supply main line 130 and the second inverter module 114, a cathode of the diode a115 is electrically connected to the first inverter module 111 and the power supply management module 113, and the second inverter module 114 is further electrically connected to the load module 140.

In the case that the power supply main line 130 is normally powered, the power supply main line 130 is further used for providing a third dc voltage to the second inverter module 114; the second inverter module 114 is configured to invert the third dc voltage into an ac voltage and provide the ac voltage to the load module 140; the supply backbone 130 is also used to stop providing the third dc voltage to the second inverter module 114 in case of over-split power outage.

It should be understood that, in the case that the power supply main line 130 supplies power normally, the power supply main line 130 supplies power to the oxygen generation compressor 120 through the first inverter module 111 to realize the oxygen generation function; the power supply main line 130 supplies power to the load module 140 through the second inverter module 114 to realize functions of air conditioning, air exhaust, electric heating and the like. In the over-split power outage situation, the supply main 130 has no third dc voltage, the second inverter module 114 stops supplying power to the load module 140, and the load module 140 stops operating.

The diode a115 is used to prevent the current of the first inverter module 111 from flowing backwards, and also prevent the power management module 113 from supplying power to the second inverter module 114.

Referring to fig. 4, the power supply device 110 further includes an isolation transformer 117, the load module 140 includes a first load unit 141 and a second load unit 142, the second inverter module 114 is electrically connected to the first load unit 141 through the isolation transformer 117, and the second inverter module 114 is electrically connected to the second load unit 142.

It is to be understood that the first load unit 141 includes an oxygen generator and a first ac load; the second load unit 142 includes an air conditioning unit, a waste fan, and a second ac load. The second inverter module 114 is configured to invert the third dc voltage of 600V into an ac voltage of 380V, and the isolation transformer 117 is configured to step down the ac voltage of 380V into an ac voltage of 220V.

That is, the voltage required for the operation of the first load unit 141 is different from the voltage required for the operation of the second load unit 142, the voltage required for the operation of the first load unit 141 is obtained after being reduced by the isolation transformer 117, and the voltage required for the operation of the second load unit 142 is directly provided by the second inverter module 114 without being reduced by the isolation transformer 117.

Referring to fig. 4, the power supply device 110 further includes a first switch 116, and the first inverter module 111 is electrically connected to the second inverter module 114 through the first switch 116. Under normal conditions, if the first inverter module 111 fails, the second inverter is further configured to provide an ac voltage to the oxygen generation compressor 120 through the first switch 116; under normal conditions, if the second inverter module 114 fails, the first inverter is also used to provide ac voltage to the load module 140 through the first switch 116.

It should be understood that, in the case of normal power supply of the power supply main line 130, if the first inverter module 111 fails, in order to ensure that the oxygen generation compressor 120 can continue to operate, the first switch 116 is in a closed state, and the second inverter module 114 provides the alternating voltage to the oxygen generation compressor 120 through the first switch 116; if the second inverter module 114 fails, the first switch 116 is in a closed state to ensure that the load module 140 can continue to operate, and the first inverter module 111 provides the ac voltage to the load module 140 through the first switch 116. When the first inverter module 111 and the second inverter module 114 are normal, the first switch 116 is in an off state, and the first inverter module 111 provides an alternating voltage to the oxygen generation compressor 120; the second inverter module 114 provides an ac voltage to the load module 140.

Through setting up first switch 116, can be when one of them contravariant module of first contravariant module 111 and second contravariant module 114 breaks down, supply power for oxygen generation compressor 120 and load module 140 by another contravariant module, can improve rail vehicle 100's power supply stability.

The power supply 110 further includes a diode B118, an anode of the diode B118 being electrically connected to both an anode of the diode a115 and the power supply rail 130, and a cathode of the diode B118 being electrically connected to the second inverter module 114.

It should be appreciated that the diode B118 serves to prevent the current of the second inverter module 114 from flowing backward to the supply main line 130.

The power supply 110 further comprises a second switch 119, and the isolation transformer 117 is electrically connected to the first ac load through the second switch 119. It should be appreciated that if the second inverter module 114 fails, the ac voltage is provided by the first inverter module 111 and the second switch 119 is in the open state to stop supplying power to the first ac load. In order to ensure the safety of the first inverter module 111, the second switch 119 is controlled to be in an off state to perform load shedding.

In this embodiment, the rail vehicle 100 further includes an integrated management module 160, the integrated management module 160 is electrically connected to the power supply main line 130, and the integrated management module 160 is configured to distribute and manage the third dc voltage of the power supply main line 130.

In summary, the application provides a power supply device and a rail vehicle, the power supply device comprises a first inverter module, a power storage module and a power supply management module, the power storage module is electrically connected with the first inverter module through the power supply management module, and the first inverter module is electrically connected with an oxygen generation compressor; under the condition of split-phase power failure, the power supply management module is used for boosting the first direct-current voltage generated by the power storage module into a second direct-current voltage and providing the second direct-current voltage to the first inverter module; the first inversion module is used for inverting the second direct-current voltage into alternating-current voltage and providing the alternating-current voltage to the oxygen production compressor.

Therefore, under the condition of passing neutral section and cutting off power, the power storage module, the power supply management module and the first inversion module supply power to the oxygen generation compressor, so that the normal work of the oxygen generation compressor is ensured, oxygen is continuously provided for a passenger room, and the safety of passengers is ensured. Meanwhile, the uninterrupted power supply is provided for the oxygen generation compressor, so that the service life of the oxygen generation compressor can be ensured. And the power supply device is implemented on the existing railway vehicle by improving the existing vehicle technology. After the power supply, the battery and the circuit under each carriage of the railway vehicle are transformed, the existing railway vehicle can carry out passenger carrying operation without passing through the split-phase power failure of the electrified circuit, and the operation cost is reduced to the maximum extent.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.