A fusion power supply and rail vehicle

Abstract

The utility model provides a kind of fusion power supply, comprising: first power module, output DC voltage, connect with first DC load by circuit breaker;Second power module, including two-way output circuit in parallel, one of which is connected with second DC load, and the other is connected with AC load after inverter module;Inverter module, output AC voltage, connect with AC load.The utility model further provides a railway vehicle provided with the fusion power supply.The utility model provides a kind of fusion power supply and railway vehicle, fusion power supply uses modularization design, is beneficial to overhaul and maintenance, integrates fusion power supply and waste exhaust device, uses the exhaust fan of waste exhaust device to heat dissipation fusion power supply, without separately equipping heat dissipation device for fusion power supply, and can make full use of waste exhaust device space, improve the available space of vehicle.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicle technology, and in particular to an integrated power supply and rail vehicle. Background Technology

[0002] Most existing rail vehicles are electrically powered. Therefore, the power system is an important component of rail vehicles. In addition to providing power to the vehicle's traction system to ensure normal operation, it also provides power to other onboard loads, such as air conditioning units, lighting systems, and ventilation systems, to improve passenger comfort.

[0003] The power system is usually located inside the passenger compartment. During operation, the power system will generate a lot of heat. To avoid heat buildup, the fusion power supply will be equipped with special cooling equipment, such as air conditioning, cooling fans or other heat dissipation devices. In addition, the fusion power supply rotates inside the passenger compartment and occupies a lot of space in the vehicle. Utility Model Content

[0004] This utility model mainly provides a fusion power supply and a rail vehicle. The fusion power supply adopts a modular design, which is conducive to inspection and maintenance. The fusion power supply is integrated with the waste discharge device, and the waste discharge fan of the waste discharge device is used to dissipate heat from the fusion power supply. There is no need to equip the fusion power supply with a separate heat dissipation device, and the space of the waste discharge device can be fully utilized to improve the usable space of the vehicle.

[0005] To solve the above-mentioned technical problems, this utility model first provides a fusion power supply, which adopts the following technical solution: A hybrid power supply, comprising: The first power module outputs DC voltage and is connected to the first DC load through a circuit breaker. The second power supply module includes two parallel output circuits, one of which is connected to the second DC load, and the other is connected to the AC load after passing through the inverter module. The inverter module outputs AC voltage and is connected to an AC load.

[0006] Furthermore, the integrated power supply also includes an insulation monitoring device.

[0007] Furthermore, the integrated power supply uses SI silicon carbide power devices.

[0008] Furthermore, it also includes a charger module, which includes a charger and is connected to both the battery and the DC load.

[0009] Furthermore, the second power module is electrically connected to the charger.

[0010] Furthermore, it also includes an emergency module, which is connected to the power module and / or charger module via an emergency switch in the driver's cab.

[0011] The second objective of this invention is to provide a rail vehicle, which adopts the following technical solution: A rail vehicle is equipped with a fusion power supply as described above.

[0012] Furthermore, it also includes a waste discharge device, and the integrated power supply is installed inside the waste discharge device.

[0013] Furthermore, the integrated power supply is equipped with a heat sink, which is located inside the heat dissipation duct of the waste discharge device.

[0014] In summary, the integrated power supply and rail vehicle provided by this utility model have the following advantages compared with the prior art: Compared with traditional vehicle power supply solutions, by setting up a unified power supply, the air conditioning unit is directly supplied with DC power, which reduces the inverter and rectification links in the air conditioning power supply circuit, improves energy conversion efficiency, and eliminates the need for harmonic suppression. The exhaust fan is used to directly cool the integrated power supply, eliminating the need for additional cooling devices. This reduces the number of vehicle components, lowers vehicle procurement costs, and reduces the failure rate. Using the vehicle's DC1500V as the input power source for the integrated power supply, and employing medium- and high-frequency auxiliary converter technology, it achieves DC600V, DC110V, and AC380V power outputs to meet the power needs of different loads on the vehicle. The integrated power supply uses brand-new SiC silicon carbide power devices to replace traditional silicon devices, resulting in low power device losses. The circuit breakers in the integrated power supply system employ soft-switching technology during the connection process of various components, which can achieve zero-voltage and zero-current switching, significantly reducing switching losses and electromagnetic interference; the power devices turn on when the voltage is close to 0, reducing switching losses at the moment of turn-on; the power devices turn off when the current is close to 0, reducing switching losses at the moment of turn-off. An insulation monitoring device is installed to monitor the insulation of DC1500V, DC600V, AC380V, and DC110V through insulation detection technology to prevent leakage. The integrated power supply utilizes the existing exhaust fan of the exhaust device for heat dissipation. The exhaust fan has a longer lifespan and a larger air volume, which can reliably dissipate heat for the integrated power supply, reduce the need for power supply cooling fans, and improve heat dissipation efficiency. This solution sets up a separate DC1500V-DC600V regulated power supply to power the air conditioning unit, that is, to separate the DC600V power supply of the air conditioning unit from the power supply of the charger + inverter unit, thereby avoiding mutual interference between the charger + inverter unit and the air conditioning unit. The integrated power supply is located inside the waste discharge device, which has a power supply chamber containing four modules. This modular design facilitates inspection and maintenance.

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of a fusion power supply structure for a rail vehicle according to this utility model; Figure 2 This is a side view of a fusion power supply structure for a rail vehicle according to the present invention; Figure 3 This utility model provides a schematic diagram of the integrated power supply circuit connection for a rail vehicle. Figure 1 ; Figure 4 This utility model provides a schematic diagram of the integrated power supply circuit connection for a rail vehicle. Figure 2 ; Figure 5 This is a schematic diagram of an emergency power supply circuit in a fusion power supply for rail vehicles according to this utility model; Figure 6 This is a schematic diagram of the control method of the air conditioning unit in the integrated power supply of a rail vehicle according to this utility model; In the picture: 1. Waste discharge device; 2. Integrated power supply; 3. First power module; 4. Second power module; 5. Inverter module; 6. Charger module; 7. Waste discharge fan; 8. Radiator; 9. Cooling duct; 10. Charger; 11. Emergency module; 12. Air conditioning unit; 13. Battery; 14. DC load; 15. AC load; 16. Emergency power supply; 17. Driver's cab emergency switch; 18. Stabilized power supply.

[0018] It should be noted that the accompanying drawings and text description are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] This utility model provides a fusion power supply, comprising a first power module that outputs DC voltage and is connected to a first DC load via a circuit breaker; a second power module that includes two parallel output circuits, one of which is connected to a second DC load, and the other is connected to an AC load after passing through an inverter module; and an inverter module that outputs AC voltage and is connected to an AC load.

[0023] This application uses the example of a fusion power supply installed on a rail vehicle to illustrate the specific structure of the fusion power supply. For example... Figure 1 and Figure 2 As shown, the rail vehicle includes a waste exhaust device 1, which can be installed on the roof or floor to exhaust the polluted air inside the vehicle in an amount equal to the fresh air volume, thereby maintaining a relatively stable air pressure inside the vehicle.

[0024] The waste exhaust integrated device includes a housing, which is fixed to the vehicle body. The housing contains a waste exhaust duct and a waste exhaust fan 7. Typically, each car is equipped with only one waste exhaust device 1, which exhausts the same amount of air from inside the car as the incoming fresh air to the outside. One waste exhaust device 1 corresponds to multiple fresh air fans. Therefore, the waste exhaust fan 7 has a larger power than conventional fresh air fans, a longer rated life, a larger exhaust volume, and a higher heat dissipation efficiency.

[0025] like Figure 1 and Figure 2As shown, the exhaust system 1 includes a cooling duct 9 and an exhaust fan 7. The exhaust fan 7 is located on the right side of the exhaust system 1. One end of the cooling duct 9 is connected to the exhaust fan 7, and the other end is connected to the exhaust system 1. Under the action of the exhaust fan 7, air from inside the vehicle enters the exhaust system through various gaps inside the vehicle and is then exhausted outside the vehicle. In practical applications, the exhaust system 1 can be installed under the vehicle or on the roof, depending on the vehicle body design. The location of the exhaust fan 7 can be designed according to the space available under the vehicle or on the roof, without any requirements or limitations.

[0026] Inside the casing of the waste discharge device 1, a fusion power supply 2 is installed, and a waste discharge fan 7 is used to dissipate heat from the fusion power supply 2. The fusion power supply 2 is equipped with a heat sink 8, which is located within a heat dissipation duct 9. The heat sink 8 is cooled by the waste discharge fan 7, eliminating the need for a dedicated heat dissipation device for the fusion power supply module. Alternatively, the fusion power supply 2 may comprise multiple modules, each equipped with a heat sink 8, all located within a heat dissipation duct 9. The airflow generated by the waste discharge fan 7 cools the heat sink 8.

[0027] Inside the housing of the waste discharge device 1, there is a power supply box. The integrated power supply 2 is installed inside the power supply box. It can receive DC power from 600V to 1500V and draw power during operation through pantograph or third rail, etc., and after conversion, provide the required DC 600V, AC 380V, and DC 110V power to the electrical loads on the vehicle.

[0028] The integrated power supply 2 includes a power module, an inverter module 5, and a charger module 6. The integrated power supply 2 receives DC power from 600V to 1500V as power input, while the power module is used to output DC voltage to power the on-board DC load 14. The inverter module 5 converts the DC power input into AC voltage to power the on-board AC load 15.

[0029] The power module includes at least a first power module 3, such as... Figure 3 and Figure 4 As shown, the first power module 3 can receive a DC 600V or DC 1500V voltage input, and after conversion by the first power module 3, outputs a DC 600V DC power supply. The first power module 3 is connected to the DC load 14 via a fuse. The DC load 14 can be a DC air conditioning unit 12. For the variable frequency DC air conditioning unit 12, it includes a fan, compressor, condenser fan and frequency converter.

[0030] Multiple air conditioning units 12 can be connected in parallel, each connected to the first power module 3 via a fuse, and supplied with DC power by the first power module 3. The power supply lines of each air conditioning unit 12 are connected via fuses. When the power supply line of any air conditioning unit 12 fails, it can be powered by the power supply lines of other connected air conditioning units 12, preventing the air conditioning units 12 from failing to start due to lack of power input.

[0031] The power module also includes a second power module 4, which also receives a DC 600V or DC 1500V power input and has two outputs. One of these outputs is converted to output a DC 110V DC voltage to power the DC load 14 on the vehicle. This DC load 14 can be various DC instruments on the vehicle, preferably such as… Figure 3 As shown, the output circuit is connected to the charger 10, which outputs a DC 110V voltage to power the DC load 14 on the vehicle. The other output is connected to the inverter module 5, which inverts the DC 600V voltage to AC 380V / AC 220V voltage and supplies power to the AC load 15 on the vehicle. The AC load 15 includes, but is not limited to, air compressors, traction fans, brake motor fans, etc.

[0032] The integrated power supply 2 also includes a charger module 6. The charger module 6 can directly receive a DC 600V or DC 1500V power input, and after conversion, outputs DC 110V to the vehicle-mounted DC load 14. It has the same function as the second power supply module 4. In this embodiment, as shown... Figure 3 and Figure 4 As shown, the charger module 6 includes a charger 10, which includes two output circuits. One circuit supplies DC 110V to the vehicle DC load 14, and the other circuit supplies power to the vehicle battery 13 so that the battery 13 can store electricity.

[0033] Furthermore, in this embodiment, as Figure 3 As shown, the charger 10, i.e. the charging module, has two inputs. One is the DC 600V or DC 1500V power supply mentioned above, and the other comes from the second power module 4. The output line of the second power module 4 that supplies power to the vehicle DC load 14 first outputs DC 600V and connects to the charger 10. The charger 10 converts the voltage to DC 110V and supplies it to the vehicle DC load 14.

[0034] Furthermore, the charger module 6 also includes an emergency module 11. The charger 10 is connected to a DC 600V or DC 1500V power supply via the emergency module 11. The emergency module 11 includes an emergency circuit, such as... Figure 5As shown, the emergency module 11 includes an emergency power supply 16, which is connected to the charger 10 and the regulated power supply 18 via the emergency switch 17 in the driver's cab. The regulated power supply 18 controls the voltage to DC 110V. In an emergency where the battery 13 is depleted, the emergency power supply 16 provides power.

[0035] In this embodiment, as described above, the integrated power supply 2 includes a first power module 3, a second power module 4, a charger module 6, and an inverter module 5. Each module is disposed within the power supply cavity. The positions of each module within the power supply cavity are allocated according to its volume and the circuit connections between them. Each module generates operating heat during operation; therefore, each module is equipped with a heat sink 8, which is located in the heat dissipation duct 9. Heat dissipation is achieved by the airflow generated by the exhaust fan 7. Wherein: The first power module 3 outputs DC 600V voltage to power the vehicle's DC air conditioning unit. The second power module 4 outputs DC 600V voltage to power the charger 10 and the inverter unit. The charger module 6 outputs DC110V voltage to power the vehicle DC load 14 (vehicle DC instrument). Its input is two-way: DC600V DC voltage input from the second power module 4 and DC600V / DC1500V main power supply. Inverter module 5 is connected to the second power supply module 4. It has a DC 600V input voltage and can output AC 380V / AC 220V voltage to power the vehicle's AC load 15.

[0036] In existing technologies, rail vehicles are typically equipped with AC380V driven variable frequency air conditioners. The on-board power supply needs to undergo two energy conversions. The DC1500V on-board power supply is first stepped down to DC670V, and then inverted to AC380V. The AC380V is then rectified to DC540V to supply the inverter inside the AC380V variable frequency air conditioner. The variable frequency air conditioner has its own inverter, which converts the DC540V voltage back into AC power suitable for the air conditioner and supplies it to the air conditioning unit 12.

[0037] In this embodiment, in conjunction with the integrated power supply 2, the rail vehicle is equipped with an integrated power supply inverter air conditioner. This air conditioner is a DC air conditioner, reducing the auxiliary inverter stage for the entire vehicle and reducing the inverter and rectification stages for the air conditioning unit 12. Figure 6As shown, the integrated power supply 2 steps down the 1500V mains DC power supply to 600V DC. If the mains voltage is already 600V DC, stepping down is unnecessary; the 600V DC voltage is directly filtered by a DC filter and then supplied to the 600V inverter air conditioner via INV AC. The power supply only requires one DC filter and one inverter to power the air conditioner, reducing the number of inverter and rectification stages. This reduces the number of components used in the power supply line, lowering costs. Furthermore, fewer components mean fewer potential failure points, improving power supply safety.

[0038] The integrated power supply 2 provided in this application adopts medium- and high-frequency auxiliary converter technology. The circuit uses novel SiC (silicon carbide) power devices to replace traditional silicon devices, reducing power device losses. Soft-switching technology is used throughout the power supply circuit, meaning the power devices employ soft switching, enabling zero voltage and zero current during switching on and off, thereby significantly reducing switching losses and electromagnetic interference, and minimizing switching noise. The integrated power supply 2 is also equipped with an insulation monitoring device to monitor the insulation status of the integrated power supply 2 in real time, preventing electrical sparks or leakage problems during operation.

[0039] This utility model further provides a rail vehicle equipped with the aforementioned integrated power supply 2 and an integrated waste discharge device with integrated power supply 2, and equipped with a DC inverter air conditioner to cooperate with the integrated power supply 2.

[0040] It should be noted that, in the embodiments provided in this application, the input power supply 2 of the integrated power supply is DC600V or DC1500V, and the output voltages are DC600V, DC110V, and AC380V / AC220V, respectively supplying power to each load according to the rated voltage requirements of the vehicle loads. In practical applications, the input voltage of the integrated power supply 2 can be determined based on the total input power supply of the rail vehicle, and the output voltage of each module can be determined based on the power requirements of each load. The foregoing description should not be construed as a limitation of this application.

[0041] In summary, the integrated power supply and rail vehicle provided by this utility model have the following advantages compared with the prior art: Compared with traditional vehicle power supply solutions, by setting up a unified power supply, the air conditioning unit is directly supplied with DC power, which reduces the inverter and rectification links in the air conditioning power supply circuit, improves energy conversion efficiency, and eliminates the need for harmonic suppression. The exhaust fan is used to directly cool the integrated power supply, eliminating the need for additional cooling devices. This reduces the number of vehicle components, lowers vehicle procurement costs, and reduces the failure rate. Using DC600V or DC1500V as the input power of the integrated power supply, and adopting medium- and high-frequency auxiliary converter technology, it can realize DC600V, DC110V and AC380V power output to meet the power needs of different loads on the vehicle. The integrated power supply uses brand-new SiC silicon carbide power devices to replace traditional silicon devices, resulting in low power device losses. The circuit breakers in the integrated power supply system employ soft-switching technology during the connection process of various components, which can achieve zero-voltage and zero-current switching, significantly reducing switching losses and electromagnetic interference; the power devices turn on when the voltage is close to 0, reducing switching losses at the moment of turn-on; the power devices turn off when the current is close to 0, reducing switching losses at the moment of turn-off. An insulation monitoring device is installed to monitor the insulation of DC1500V, DC600V, AC380V, and DC110V through insulation detection technology to prevent leakage. The integrated power supply utilizes the existing exhaust fan of the exhaust device for heat dissipation. The exhaust fan has a longer lifespan and a larger air volume, which can reliably dissipate heat for the integrated power supply, reduce the need for power supply cooling fans, and improve heat dissipation efficiency. This solution sets up a separate DC1500V-DC600V regulated power supply to power the air conditioning unit, that is, to separate the DC600V power supply of the air conditioning unit from the power supply of the charger + inverter unit, thereby avoiding mutual interference between the charger + inverter unit and the air conditioning unit. The integrated power supply is located inside the waste discharge device, which has a power supply chamber containing four modules. This modular design facilitates inspection and maintenance.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fusion power supply, characterized in that: include, The first power module outputs DC voltage and is connected to the first DC load through a circuit breaker. The second power supply module includes two parallel output circuits, one of which is connected to the second DC load, and the other is connected to the AC load after passing through the inverter module. The inverter module outputs AC voltage and is connected to an AC load.

2. The integrated power supply as described in claim 1, characterized in that: The integrated power supply also includes an insulation monitoring device.

3. The integrated power supply as described in claim 1, characterized in that: The integrated power supply uses SI silicon carbide power devices.

4. The integrated power supply as described in claim 1, characterized in that: It also includes a charger module, which includes a charger and is connected to the battery and a DC load respectively.

5. The integrated power supply as described in claim 4, characterized in that: The second power module is electrically connected to the charger.

6. The integrated power supply as described in claim 1, characterized in that: It also includes an emergency module, which is connected to the power module and / or charger module via an emergency switch in the driver's cab.

7. A rail vehicle, characterized in that: It is equipped with a fusion power supply as described in any one of claims 1 to 6.

8. A rail vehicle as described in claim 7, characterized in that: It also includes a waste discharge device, and the integrated power supply is located inside the waste discharge device.

9. A rail vehicle as described in claim 8, characterized in that: The integrated power supply is equipped with a heat sink, which is located inside the heat dissipation duct of the waste discharge device.

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