CN218997921U - Traction converter and vehicle - Google Patents

Abstract

The embodiment of the utility model provides a traction converter and a vehicle, wherein the traction converter comprises a box body, a power module, a fan, a heat radiating device, a main circuit component and a control circuit component; the box body is internally provided with a first closed chamber, a second closed chamber and a ventilation chamber, the ventilation chamber is positioned between the first closed chamber and the second closed chamber, and the first closed chamber is communicated with the ventilation chamber. The power module and the heat dissipating device are arranged in the first closed chamber, the main circuit component and the control circuit component are arranged in the second closed chamber, and the fan is arranged in the ventilation chamber. An air inlet communicated with the first closed chamber is arranged at the position on the top of the box body corresponding to the first closed chamber, and an air outlet communicated with the ventilating chamber is arranged at the position on the bottom of the box body corresponding to the ventilating chamber. The traction converter provided by the embodiment of the utility model can discharge heat generated by the power module during working through the ventilation chamber in the box body, so that the volume of the traction converter is reduced, and the space utilization rate in the traction converter is improved.

Description

Traction converter and vehicle

Technical Field

The utility model relates to the technical field of vehicle equipment, in particular to a traction converter and a vehicle.

Background

The traction converter is one of key parts of a motor train, is arranged at the bottom of the motor train and has the main functions of converting electric energy between a direct current system and an alternating current system, and realizes the control of starting, braking and speed regulation of an alternating current traction motor through voltage regulation and frequency modulation control. With the continued development of vehicles, the requirements for traction converters are also increasing.

The traction converter in the related art mainly comprises a box body, and a power module, a main circuit component, a control circuit component, a heat dissipation device and a reactor which are arranged in the box body, wherein the heat dissipation device is arranged in the box body and/or outside the box body, and can dissipate heat of the power module, the reactor and other components.

However, the heat dissipation device of the power module in the related art is disposed outside the box, which results in a larger volume of the traction converter and reduces the space utilization rate inside the traction converter.

Disclosure of Invention

The embodiment of the application provides a traction converter and vehicle for solve among the related art power module's heat abstractor set up in the outside of box, lead to the volume of traction converter great, reduced the inside space utilization's of traction converter technical problem.

In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions:

a first aspect of an embodiment of the present utility model provides a traction converter, which includes a case, a power module, a fan, a heat dissipating device, a main circuit component, and a control circuit component;

the box body is internally provided with a first closed chamber, a second closed chamber and a ventilation chamber, the ventilation chamber is positioned between the first closed chamber and the second closed chamber, and the first closed chamber is communicated with the ventilation chamber;

the power module and the heat dissipation device are arranged in the first closed chamber, the heat dissipation device is used for dissipating heat of the power module, the main circuit component and the control circuit component are arranged in the second closed chamber, and the fan is arranged in the ventilation chamber;

an air inlet communicated with the first closed chamber is arranged at the position on the top of the box body corresponding to the first closed chamber, and an air outlet communicated with the ventilating chamber is arranged at the position on the bottom of the box body corresponding to the ventilating chamber.

On the basis of the technical scheme, the utility model can be improved as follows.

In one possible implementation, the first closed chamber includes a power chamber and a heat dissipation chamber isolated from each other;

the power module is arranged in the power chamber, the heat dissipation device is arranged in the heat dissipation chamber, and the heat dissipation chamber is communicated with the ventilation chamber;

the air inlet is arranged at the position corresponding to the heat dissipation cavity on the top of the box body.

In one possible implementation, the ventilation chamber has a first space and a second space in communication with each other;

the first space is at least used for placing a fan, and the second space is at least used for placing a reactor;

the first closed chamber is communicated with the first space;

the air outlet is arranged at a position corresponding to the second space on the bottom of the box body.

In one possible implementation, the first space has a first area and a second area above the first area, the first area is in communication with the first closed chamber, a portion of the fan is disposed in the second area and an air suction opening of the fan is in communication with the first area;

the second region communicates with the second space.

In one possible implementation, the ventilation chamber has a first partition and a second partition;

the first partition plate is used for dividing the first space into a first area and a second area, the first partition plate is provided with a first opening, and the air suction inlet of the fan is communicated with the first area through the first opening;

the second partition plate is used for dividing the ventilation chamber into a first space and a second space, the second partition plate is provided with a second opening, and the second area is communicated with the second space through the second opening.

In one possible implementation, the second closed chamber comprises a high pressure region and a low pressure region;

the high voltage area is used for placing at least the main circuit component, and the low voltage area is used for placing at least the control circuit component.

In one possible implementation, the device further comprises a high-voltage input area, a low-voltage input area and a high-voltage output area which are arranged on the outer side surface of the box body;

the high-voltage input area is electrically connected with the input end of the main circuit component, the low-voltage input area is electrically connected with the input end of the control circuit component, and the high-voltage output area is electrically connected with the output end of the main circuit component;

the box has two lateral surfaces that set up relatively, and high pressure input district and low pressure input go to set up on one of them lateral surface of box, and high pressure output district sets up in one of them other lateral surface of box.

In one possible implementation, the method further comprises a plurality of side beams;

the side beams are arranged at the edge of the top of the box body and are connected with the car body through fasteners so that the box body is fixed on the car body

And/or a filter screen is arranged on the air inlet.

In one possible implementation manner, a housing is disposed at a position on the side surface of the case body corresponding to the second space, a third space is disposed in the housing, the third space is communicated with the second space, and an air outlet is formed in the bottom of the housing.

A second aspect of an embodiment of the present utility model provides a vehicle comprising a body, and a traction converter as described above;

the traction converter is arranged at the bottom of the vehicle body.

The embodiment of the utility model provides a traction converter and a vehicle. The power module and the heat dissipation device are arranged in the first airtight chamber, the main circuit component and the control circuit component are arranged in the second airtight chamber, the fan is arranged in the ventilation chamber, the first airtight chamber is communicated with the ventilation chamber, an air inlet communicated with the first airtight chamber is formed in the position corresponding to the first airtight chamber on the top of the box body, an air outlet communicated with the ventilation chamber is formed in the position corresponding to the ventilation chamber on the bottom of the box body, external air enters the first airtight chamber through the air inlet to bring heat of the power module absorbed by the heat dissipation device into the ventilation chamber, and the air with heat is discharged from the air outlet through the fan, so that the volume of the traction converter is reduced and the space utilization rate of the traction converter is improved by discharging the heat generated when the power module works through the ventilation chamber inside the box body.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a traction converter according to a first angle provided by an embodiment of the present utility model;

fig. 2 is a schematic view of a second angle of the traction converter of fig. 1;

fig. 3 is a schematic view of a third angle of the traction converter of fig. 1;

fig. 4 is a schematic diagram of an internal structure of the traction converter of fig. 1;

fig. 5 is a cross-sectional view of the air duct chamber in the traction converter of fig. 1.

Reference numerals illustrate:

100-box body;

110-a first closed chamber;

111-an air inlet; 112-a vent; 113-a power chamber; 114-a heat dissipation chamber;

115-a heat sink;

120-a second closed chamber;

121-high pressure zone; 122-low pressure zone;

130-a ventilation chamber;

131-an air outlet; 132-a first space; 133-a second space; 134-a first separator; 135-a second separator; 136-air deflector;

1321-a first region; 1322-second region;

140-high voltage input area; 150-a low voltage input zone; 160-a high voltage output zone;

170-a first access door; 180-a second access door; 190-a third access door;

200-a power module;

300-fans;

400-a main circuit assembly;

500-a control circuit assembly;

600-reactor;

700-side beams; 710-lifting lug;

800-a filter screen;

900-a housing;

910-a third space; 920-exhaust outlet.

Detailed Description

As described in the background art, the heat dissipation device of the power module in the prior art is disposed outside the box body, which results in a larger volume of the traction converter and reduces the space utilization rate inside the traction converter. The reason for this is that the power modules of the traction converters in the prior art use an independent heat dissipation and a heat dissipation device is also required to dissipate heat from other components in the traction converter. The heat dissipation device of the power module is arranged at the position corresponding to the power module on the outer side wall of the box body so as to realize the independent heat dissipation of the power module, and meanwhile, the fan and the air duct are arranged in the traction converter so as to dissipate heat for other parts, so that the traction converter is large in size and low in space utilization rate.

In order to solve the technical problems, the embodiment of the utility model provides a traction converter and a vehicle. The power module and the heat dissipation device are arranged in the first airtight chamber, the main circuit component and the control circuit component are arranged in the second airtight chamber, the fan is arranged in the ventilation chamber, the first airtight chamber is communicated with the ventilation chamber, an air inlet communicated with the first airtight chamber is formed in the position corresponding to the first airtight chamber on the top of the box body, an air outlet communicated with the ventilation chamber is formed in the position corresponding to the ventilation chamber on the bottom of the box body, external air enters the first airtight chamber through the air inlet to bring heat of the power module absorbed by the heat dissipation device into the ventilation chamber, and the air with heat is discharged from the air outlet through the fan, so that the volume of the traction converter is reduced and the space utilization rate of the traction converter is improved by discharging the heat generated when the power module works through the ventilation chamber inside the box body.

In order to make the above objects, features and advantages of the embodiments of the present utility model more comprehensible, the technical solutions of the embodiments of the present utility model will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, a first aspect of an embodiment of the present utility model provides a traction converter that may include a case 100, a power module 200, a blower 300, a main circuit assembly 400, and a control circuit assembly 500. The box 100 may be composed of a bottom plate, side plates and a top plate, and if the box 100 is rectangular or square, the box 100 has four side plates, and the top plate, the side plates and the bottom plate of the box 100 are detachably connected with each other. The inside of the box body 100 can be further provided with a partition plate so as to divide the inside of the box body 100 into a plurality of chambers, and the power module 200, the fan 300, the main circuit assembly 400 and the control circuit assembly 500 can be respectively placed in the corresponding chambers, so that the inside of the box body 100 is modularized, the overhaul and the maintenance are convenient, and the space utilization rate in the box body 100 can be improved.

It is understood that the main circuit of the traction converter of the present application may topologically employ a single-module two-level voltage type dc-ac inverter circuit. Including precharge circuits, filter circuits, chopper circuits, etc.

Referring to fig. 1 to 4, in the present embodiment, the case 100 may adopt a three-stage distribution layout, a first closed chamber 110, a second closed chamber 120, and a ventilation chamber 130 may be disposed inside the case 100, the ventilation chamber 130 may be disposed between the first closed chamber 110 and the second closed chamber 120, and the first closed chamber 110 may be in communication with the ventilation chamber 130. In a specific implementation, the power module 200 may be disposed in the first closed chamber 110, the main circuit assembly 400 and the control circuit assembly 500 are disposed in the second closed chamber 120, the blower 300 is disposed in the ventilation chamber 130, the air inlet 111 communicating with the first closed chamber 110 is disposed at a position corresponding to the first closed chamber 110 on the top of the case 100, and the air outlet 131 communicating with the ventilation chamber 130 is disposed at a position corresponding to the ventilation chamber 130 on the bottom of the case 100. In some embodiments, air outside the traction converter can flow into the first closed chamber 110 through the air inlet 111 to dissipate heat of the power module 200, and air taking away heat of the power module 200 enters the ventilation chamber 130 from a communication position between the first closed chamber 110 and the ventilation chamber 130, and the fan 300 discharges the air from the air outlet 131 in the air duct chamber.

It should be noted that, if the box 100 is lifted to the bottom of the vehicle body, a certain distance may exist between the top of the box 100 and the bottom of the vehicle body, so that air can enter the first closed chamber 110 through the air inlet 111.

Referring to fig. 4, in some embodiments, a heat dissipating device may be further disposed in the first closed chamber 110, and the heat dissipating device is connected to the power module 200, and the heat dissipating device may improve heat dissipation efficiency of the power module 200. The communication part between the first closed chamber 110 and the ventilation chamber 130 can be formed on the partition plate between the ventilation chamber 130 and the first closed chamber 110, and the communication part is close to the heat dissipation device in the first closed chamber 110, so that the heat emitted by the heat dissipation device can quickly enter the ventilation chamber 130, and the heat dissipation efficiency of the traction converter is improved. In an exemplary embodiment, the heat dissipating device may be a heat dissipating fin disposed between the partition plate and the power module 200. In some embodiments, the air entering from the air inlet 111 may only pass through the heat dissipating device 115, and not pass through the power module 200, so as to avoid impurities or moisture in the air from affecting the power module 200. For example, the power module 200 and the heat sink 115 may be disposed in two chambers isolated from each other in the first closed chamber 110, and the air inlet 111 is only in communication with the chamber in which the heat sink 115 is disposed.

Referring to fig. 1, in a specific implementation, a first access door 170 may be provided on a side of the case 100, the first access door 170 being provided at a position corresponding to the first closed chamber 110 on the side, and the power module 200 in the first closed chamber 110 may be inspected and maintained by opening the first access door 170, thereby improving the practicality of the traction converter.

Embodiments of the present utility model provide a traction converter that may include a case 100, a power module 200, a blower 300, a heat sink 115, a main circuit assembly 400, and a control circuit assembly 500. Will be

The ventilation chamber 130 is disposed between the first and second closed chambers 110, 120, the power module 200 is disposed 5 in the first closed chamber 110, and the main circuit assembly 400 and the control circuit assembly 500 are disposed in the second closed chamber

The chamber 120, the fan 300 is provided in the ventilation chamber 130, and by communicating the first closed chamber 110 with the ventilation chamber 130, the air inlet 111 communicating with the first closed chamber 110 is provided at a position corresponding to the first closed chamber 110 on the top of the casing 100, and the air outlet 111 communicating with the ventilation chamber 130 is provided at a position corresponding to the bottom of the casing 100

An air outlet 131 communicated with the ventilation chamber 130, and air outside the ventilation chamber 130 is led into the first airtight 0 chamber 110 through the air inlet 111 to bring heat of the power module 200 absorbed by the heat dissipating device 115 into the ventilation chamber 130, and is led

The air with heat is discharged from the air outlet 131 by the over-blower 300, so that the heat generated when the power module 200 works can be discharged through the ventilating chamber 130 inside the box body 100, the volume of the traction converter is reduced, and the space utilization rate inside the traction converter is improved.

Referring to fig. 1 and 4, the first closed chamber 110 may include a power chamber 113 and a heat dissipation chamber 114 isolated from each other 5, the power module 200 is disposed in the power chamber 113,

the heat dissipating device 115 is disposed in the heat dissipating chamber 114, the heat dissipating chamber 114 is communicated with the ventilation chamber 130, and the air inlet 111 is disposed on the top of the box 100 at a position corresponding to the heat dissipating chamber 114. By disposing the heat sink 115 and the power module 200 in the heat dissipation chamber 114 and the power chamber 113 isolated from each other,

the heat dissipation device 115 and the power module 200 only transfer heat, and the air inlet 111 is arranged at the top of the 0 box 100 and corresponds to the heat dissipation chamber 114, so that impurities in the outside air can be avoided

The quality or moisture affects the power module 200, affecting the performance and lifetime of the power module 200. Air enters the heat dissipation chamber 114 through the air inlet 111, and heat transferred from the power module 200 to the heat dissipation device 115 is carried into the ventilation chamber 130 through the communication between the heat dissipation chamber 114 and the ventilation chamber 130.

Referring to fig. 5, on the basis of the above embodiment, the ventilation chamber 130 has a first 5 space 132 and a second space 133 which are communicated with each other, and the first space 132 and the second space 133 are long in the ventilation chamber 130

The first space 132 is disposed at one end of the ventilation chamber 130 near the left side, and the second space 133 is disposed at one end of the ventilation chamber 130 near the right side. The first space 132 is at least used for placing the blower 300, the first closed chamber 110 is communicated with the first space 132, and the second space 133 is at least used for

In placing the reactor 600, the air outlet 131 is opened at a position corresponding to 0 of the second space 133 on the bottom of the case 100. In some embodiments, the air outlet 131 may be composed of a plurality of through holes.

Referring to fig. 5, in a specific implementation, by dividing the ventilation chamber 130 into the first space 132 and the second space 133, it is possible to reduce the interaction during the operation of the blower 300 and the reactor 600. By providing the reactor 600 in the traction converter, the space utilization rate in the traction converter can be improved, the space occupation rate of the reactor 600 at the bottom of the vehicle body can be reduced, and the space utilization rate at the bottom of the vehicle body can be improved. The air in the first airtight chamber 110 is sucked into the first space 132 by the fan 300, and then the fan 300 blows the air into the second space 133 and discharges the air through the air outlet 131 of the second space 133, so that the heat can be dissipated for the reactor 600 at the same time under the condition of dissipating the heat for the power module 200, the fan 300 can dissipate the heat for the power module 200 and the reactor 600 at the same time, and the utilization rate of the fan 300 is improved.

Referring to fig. 4 and 5, if the first closed chamber 110 may include the power chamber 113 and the heat dissipation chamber 114, the first space 132 may be communicated with the heat dissipation chamber 114, and the air inlet 111 is opened at a position on the top of the box 100 corresponding to the heat dissipation chamber 114, so that external air enters the heat dissipation chamber 114 through the air inlet 111, then enters the first space 132 from a communication position between the heat dissipation chamber 114 and the first space 132, and is further blown into the second space 133 by the blower.

With continued reference to fig. 5, in the above embodiment, the first space 132 has a first area 1321 and a second area 1322 located above the first area 1321, where the first area 1321 is communicated with the first closed chamber 110, and a ventilation opening 112 is formed on a partition between the first area 1321 and the first closed chamber 110, so that air entering the first closed chamber 110 from the air inlet 111 may enter the first area 1321 through the ventilation opening 112. A part of the blower 300 is disposed in the second area 1322, and an air intake of the blower 300 is communicated with the first area 1321, another part of the blower 300 is disposed in the first area 1321, and the second area 1322 is communicated with the second space 133. The blower 300 has an air suction port and a blowing port, and the air suction port of the blower 300 sucks air in the first region 1321 into the second region 1322 and then blows the air into the second space 133 through the blowing port of the blower 300. By dividing the first space 132 into the first region 1321 and the second region 1322 and disposing the blower 300 in the second region 1322, the blower 300 and the power module 200 can be indirectly connected through the first region 1321, and the influence of the blower 300 on the power module 200 in the first sealed chamber 110 can be reduced. It should be noted that, if the first closed chamber 110 has the power chamber 113 and the heat dissipation chamber 114, the ventilation opening 112 may be formed on a partition between the first space 132 and the heat dissipation chamber 114.

Referring to fig. 5, in a specific implementation, a plurality of air deflectors 136 are further disposed in the second region 1322, and the air deflectors 136 are vertically disposed at corners of two adjacent sidewalls in the second region 1322. If the second region 1322 is a quadrangle in plan view, the air deflector 136 may be disposed at four corners of the quadrangle. By providing the wind deflector 136, wind resistance and wind noise in the second region 1322 can be reduced, and formation of a vortex in the second region 1322 can be prevented.

With continued reference to fig. 5, in the foregoing embodiment, the ventilation chamber 130 has a first partition 134 and a second partition 135, the first partition 134 is used to partition the first space 132 into a first area 1321 and a second area 1322, the first partition 134 has a first opening, the suction inlet of the fan 300 is in communication with the first area 1321 through the first opening, and a part of the structure of the fan 300 can be located in the first area 1321 through the first opening. By providing the first partition 134, the fan 300 can be prevented from directly communicating with the power module 200 through the ventilation opening 112, and the interaction between the fan 300 and the power module 200 can be reduced. The second partition 135 is used to divide the ventilation chamber 130 into a first space 132 and a second space 133, and the second partition 135 has a second opening through which the second region 1322 communicates with the second space 133, and wind blown out from the air outlet of the blower 300 enters the second space 133. By providing the second separator 135, the interaction between the fan 300 in the second region 1322 and the reactor 600 in the second space 133 can be reduced, and the degree of modularization in the case 100 can be improved.

It should be noted that, if the first closed chamber 110 has the heat dissipation chamber 114 and the power chamber 113, the ventilation opening 112 may be formed on a partition between the heat dissipation chamber 114 and the first region 1321, so that the first region 1321 is communicated with the heat dissipation chamber 114, and the air flowing into the heat dissipation chamber 114 from the air inlet 111 enters into the first region 1321 through the ventilation opening 112.

Referring to fig. 4, the second closed chamber 120 may include a high-voltage region 121 for at least placing the main circuit assembly 400 and a low-voltage region 122 for at least placing the control circuit assembly 500, based on the above-described embodiment. The second closed chamber 120 is not communicated with the ventilation chamber 130, and the fan 300 in the ventilation chamber 130 can be prevented from affecting the operation of the main circuit assembly 400 and the control circuit assembly 500 in the second closed chamber 120. Based on the orientation of the traction converter in fig. 4, the high voltage area 121 is located below the low voltage area 122, the main circuit assembly 400 is installed in the high voltage area 121, and the control circuit assembly 500 is installed in the low voltage area 122, so that the modularization of the internal structure of the traction converter can be further realized, and the maintenance and the overhaul of the traction converter are facilitated. In an exemplary embodiment, if the ventilation chamber 130 has the first space 132 and the second space 133 therein, neither the first space 132 nor the second space 133 communicates with the second closed chamber 120, and further, neither the first space 132 nor the second space 133 communicates with the high pressure region 121 nor the low pressure region 122.

In some embodiments, the high voltage region 121 can be used to mount a contactor assembly, which can include a main contactor, a precharge contactor, a charging resistor, and a current sensor. The high voltage area 121 can also be used for installing voltage sensors, cooling fan breakers, brake resistor cooling fan contactors and the like.

Referring to fig. 2 and 4, in some embodiments, the case 100 has a second access door 180 and a third access door 190 on sides thereof corresponding to the second closed chamber 120. The second access door 180 is provided at a position corresponding to the low-voltage region 122 on the side of the case 100, the control circuit assembly 500 in the low-voltage region 122 can be serviced and maintained by opening the second access door 180, the third access door 190 and the second access door 180 are provided on the same side of the case 100, the third access door 190 is provided at a position corresponding to the high-voltage region 121 on the side of the case 100, and the main circuit assembly 400 in the high-voltage region 121 can be serviced and maintained by opening the third access door 190. By providing the second access door 180 and the third access door 190, the utility of the traction converter can be further improved, facilitating separate maintenance and service of the main circuit assembly 400 and the control circuit assembly 500.

It is understood that the low pressure region 122 can be used to mount traction control units, cooling fans, door level drive power assemblies, cooling fan contactors, and the like.

Referring to fig. 4, the above embodiment may further include a high voltage input region 140, a low voltage input region 150, and a high voltage output region 160 provided on the outer side surface of the case 100. The high voltage input region 140 is electrically connected to an input terminal of the main circuit assembly 400, the low voltage input region 150 is electrically connected to an input terminal of the control circuit assembly 500, and the high voltage output region 160 is electrically connected to an output terminal of the main circuit assembly 400. In an exemplary embodiment, if the second closed chamber 120 has a high voltage area 121 and a low voltage area 122, the main circuit assembly 400 is disposed in the high voltage area 121, the control circuit assembly 500 is disposed in the low voltage area 122, the high voltage input area 140 is connected to the input terminal of the main circuit assembly 400 in the high voltage area 121, and the low voltage input area 150 is connected to the input terminal of the control circuit assembly 500 in the low voltage area 122.

Referring to fig. 1 to 3, the case 100 has two opposite outer sides, a high voltage input region 140 and a low voltage input region are disposed on one of the outer sides of the case 100, the high voltage input region 140 is disposed on the outer side of the case 100 in a region corresponding to the second closed chamber 120, and the low voltage input region 150 is disposed on the outer side of the case 100 in a region corresponding to the first closed chamber 110. The high-pressure output area 160 is disposed on the other outer side of the case 100, and the high-pressure output area 160 is disposed in a region corresponding to the second closed chamber 120.

Referring to fig. 1, the traction converter may further include a plurality of side beams 700, the side beams 700 being disposed at edges of the top of the case 100, the plurality of side beams 700 being for coupling with a vehicle body by fasteners to fix the case 100 to the vehicle body. In particular, if the top of the case 100 is rectangular, the side beams 700 have four, and each side beam 700 is disposed at a corner of the top of the case 100. The side beam 700 has a mounting hole, and the vehicle body has a connection structure matched with the mounting hole, and the fastener passes through the mounting hole and is connected with the connection structure, so that the case 100 is lifted at the bottom of the vehicle body. By providing the side sill 700 at the top of the case 100 and connecting the case 100 to the vehicle body through the side sill 700, the connection stability between the case 100 and the vehicle body can be improved. If the case 100 is lifted to the bottom of the vehicle body through the side beams 700, a certain distance may exist between the top of the case 100 and the bottom of the vehicle body, so that air can enter the first closed chamber 110 through the air inlet 111 at the top of the case 100.

Referring to fig. 1 to 4, in a specific implementation, a lifting lug 710 is provided at an end of each side rail 700 facing away from the case 100, a mounting hole is provided at the lifting lug 710, a coupling structure matching with the mounting hole is provided at the vehicle body, and a fastener passes through the mounting hole of the lifting lug 710 and is coupled with the coupling structure, so that the case is lifted at the bottom of the vehicle body through the side rail 700 and the lifting lug 710.

Referring to fig. 1, on the basis of the above embodiment, a filter screen 800 is disposed on the air inlet 111. By arranging the filter screen 800 on the air inlet 111, the amount of foreign matters outside the traction converter entering the first closed chamber 110 along with air can be reduced, so that the influence of the foreign matters outside the traction converter on the heat radiator 115 is reduced, the service life of the heat radiator 115 is prolonged, and the service life of the traction converter is prolonged.

Referring to fig. 1 and 2, on the basis of the above embodiment, a housing 900 is provided at a position corresponding to the second space 133 on the side of the case 100, a third space 910 is provided in the housing 900, the third space 910 is communicated with the second space 133, and an air outlet 920 is provided at the bottom of the housing 900. In an exemplary embodiment, if an opening is provided on a side between the third space 910 and the second space 133, the gas in the second space 133 flows into the third space 910 through the opening; if the side wall of the case 100 at the position corresponding to the second space 133 is removed from the third space 910, it is possible to communicate the third space 910 with the second space 133 and to facilitate the flow of gas from the second space 133 into the third space 910. Through setting up casing 900 to set up air exit 920 in the bottom of casing 900, can improve the exhaust amount of wind of traction current transformer, with the discharge of accelerating the heat in the box 100, and then improved the radiating effect of traction current transformer.

A second aspect of an embodiment of the present utility model provides a vehicle, which may include a vehicle body, and a traction converter as described above, the traction converter being disposed at a bottom of the vehicle body. Through hoisting the traction converter with the bottom of automobile body, can guarantee on the traction converter has better radiating effect's basis, reduce the occupation amount to automobile body bottom space, improve the usage space of automobile body bottom.

In this specification, each embodiment or implementation is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

It should be noted that references in the specification to "in the detailed description", "in some embodiments", "in this embodiment", "exemplarily", etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Generally, terms should be understood at least in part by use in the context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, at least in part depending on the context. Similarly, terms such as "a" or "an" may also be understood to convey a singular usage or a plural usage, depending at least in part on the context.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The traction converter is characterized by comprising a box body, a power module, a heat dissipation device, a fan, a main circuit component and a control circuit component;

the box body is internally provided with a first closed chamber, a second closed chamber and a ventilation chamber, the ventilation chamber is positioned between the first closed chamber and the second closed chamber, and the first closed chamber is communicated with the ventilation chamber;

the power module and the heat dissipation device are both arranged in the first closed chamber, the heat dissipation device is used for dissipating heat of the power module, the main circuit component and the control circuit component are arranged in the second closed chamber, and the fan is arranged in the ventilation chamber;

the top of the box body is provided with an air inlet communicated with the first closed chamber, and the bottom of the box body is provided with an air outlet communicated with the ventilating chamber.

2. The traction converter of claim 1, wherein the first closed chamber comprises a power chamber and a heat dissipation chamber isolated from each other;

the power module is arranged in the power chamber, the heat dissipation device is arranged in the heat dissipation chamber, and the heat dissipation chamber is communicated with the ventilation chamber;

the air inlet is arranged at a position on the top of the box body, which corresponds to the heat dissipation cavity.

3. The traction converter of claim 1, wherein the plenum has a first space and a second space in communication with each other;

the first space is at least used for placing the fan, and the second space is at least used for placing the reactor;

the first closed chamber is communicated with the first space;

the air outlet is arranged at a position corresponding to the second space on the bottom of the box body.

4. The traction converter of claim 3 wherein said first space has a first region and a second region above said first region, said first region being in communication with said first closed chamber, a portion of said fan being disposed in said second region and an inlet scoop of said fan being in communication with said first region;

the second region communicates with the second space.

5. The traction converter of claim 4 wherein said plenum has a first baffle and a second baffle;

the first partition plate is used for dividing the first space into the first area and the second area, a first opening is formed in the first partition plate, and the air suction inlet of the fan is communicated with the first area through the first opening;

the second partition plate is used for dividing the ventilation chamber into a first space and a second space, a second opening is formed in the second partition plate, and the second area is communicated with the second space through the second opening.

6. Traction converter according to any of claims 1-5, characterized in that said second closed chamber comprises a high-pressure zone and a low-pressure zone;

the high voltage area is used for at least placing the main circuit component, and the low voltage area is used for at least placing the control circuit component.

7. The traction converter of claim 1, further comprising a high voltage input region, a low voltage input region, and a high voltage output region disposed on an exterior side of the tank;

the high-voltage input area is electrically connected with the input end of the main circuit component, the low-voltage input area is electrically connected with the input end of the control circuit component, and the high-voltage output area is electrically connected with the output end of the main circuit component;

the box body is provided with two opposite outer side surfaces, the high-voltage input area and the low-voltage input area are arranged on one outer side surface of the box body, and the high-voltage output area is arranged on the other outer side surface of the box body.

8. The traction converter of claim 1, further comprising a plurality of side rails;

the side beams are arranged at the edge of the top of the box body, and the side beams are used for being connected with the car body through fasteners so that the box body is fixed on the car body;

and/or a filter screen is arranged on the air inlet.

9. The traction converter of claim 3, wherein a housing is disposed on a side of the case at a position corresponding to the second space, a third space is disposed in the housing, the third space is communicated with the second space, and an air outlet is formed in a bottom of the housing.

10. A vehicle comprising a body and a traction converter as claimed in any one of claims 1 to 9;

the traction converter is arranged at the bottom of the vehicle body.

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