CN216959640U

CN216959640U - Auxiliary inverter

Info

Publication number: CN216959640U
Application number: CN202123433286.7U
Authority: CN
Inventors: 韩永华; 袁洋; 李义; 王鑫
Original assignee: Shenzhen Tongye Technology Co ltd
Current assignee: Shenzhen Tongye Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-12
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses an auxiliary inverter, which comprises a case, wherein the case is provided with a framework, the framework divides the interior of the case into two fan installation cavities, two function installation cavities, an input installation cavity and an output installation cavity, the two fan installation cavities are symmetrically arranged relative to the geometric center of the case, the two function installation cavities are symmetrically arranged at oblique angles, the input installation cavity and the output installation cavity are symmetrically arranged at oblique angles, fan assemblies are respectively arranged in the fan installation cavities, the function installation cavities are respectively provided with a function assembly and a wind guide cover, the wind guide covers are matched with the fan assemblies in a one-to-one correspondence manner, the input installation cavity is internally provided with an input assembly, and the output installation cavity is internally provided with an output assembly. The auxiliary inverter can be provided with two sets of functional components to improve the capacity and meet the use requirement, the components are compactly arranged on the framework, the space is utilized to the maximum, the center of gravity deviation is prevented, the auxiliary inverter is ensured to be kept stable on a vehicle body, and the smooth air flow in the auxiliary inverter is ensured through the fan component matched with the air guide cover.

Description

Auxiliary inverter

Technical Field

The utility model relates to the technical field of rail transit, in particular to an auxiliary inverter.

Background

The auxiliary inverter is an important component in rail transit facilities such as subways and the like, and has the main function of converting high-voltage direct current into three-phase alternating current or low-voltage direct current to provide power for equipment such as lamps and air conditioners on vehicles and charge storage batteries of the vehicles.

With the development of rail transit technology, the types and the number of electric equipment on facilities such as subway vehicles and the like are gradually increased, so that the power consumption demand is continuously improved, and the capacity of a corresponding auxiliary inverter is increased. At present, two common methods for increasing the capacity of the auxiliary inverter are available, one method is to increase the size of an auxiliary inverter case to arrange more devices in the case, while the conventional case mostly adopts a stainless steel or carbon steel square tube framework, and the framework occupies most of the weight of the case, so the increase of the size of the case inevitably increases the overall weight and volume of the auxiliary inverter greatly, the auxiliary inverter is usually installed at the bottom of a vehicle body, the overweight or overlarge auxiliary inverter is difficult to stably install on the vehicle body, and the adverse effect on the vehicle operation is generated; another method for increasing the capacity of the auxiliary inverter is to install more devices into the chassis without increasing the size of the chassis, and although the overall size of the auxiliary inverter does not change greatly, the weight of the auxiliary inverter increases, and the devices in the auxiliary inverter are arranged in a crowded manner, so that cooling air is prevented from flowing in the chassis, and heat dissipation of the auxiliary inverter is not facilitated. Therefore, a high integration auxiliary inverter is required to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: provided is a high-integration auxiliary inverter.

In order to solve the technical problems, the utility model adopts the technical scheme that: an auxiliary inverter comprises a case, wherein the case is provided with a framework, the framework divides the interior of the case into two fan installation cavities, two function installation cavities, an input installation cavity and an output installation cavity, the two fan installation cavities are symmetrically arranged relative to the geometric center of the case, the two function installation cavities are symmetrically arranged at oblique angles, the input installation cavity and the output installation cavity are symmetrically arranged at oblique angles, one fan installation cavity is positioned between one function installation cavity and the input installation cavity, the other fan installation cavity is positioned between the other function installation cavity and the output installation cavity, fan assemblies are respectively arranged in the fan installation cavities, functional assemblies and wind guide covers are respectively arranged in the function installation cavities, the wind guide covers are matched with the fan assemblies in a one-to-one correspondence manner, and the input installation cavity is internally provided with the input assembly, an output assembly is arranged in the output mounting cavity.

Furthermore, the functional component comprises a DCDC module and an inverter module, the DCDC module and the inverter module are respectively provided with the wind scooper, and the wind scooper is arranged in a sliding manner relative to the framework.

Furthermore, a guide rail is arranged on the framework, the guide rail comprises a sliding support fixedly connected with the framework and a telescopic rod matched with the sliding support, and the telescopic rod is fixedly connected with the wind scooper.

Further, the functional unit still includes absorption capacitance module and current sensor module, absorption capacitance module reaches current sensor module with the DCDC module reaches the contravariant module sets up at the interval in vertical direction, the machine case still includes a plurality of apron, the apron covers respectively the relative two sides of skeleton, absorption capacitance module and current sensor module set up respectively on the apron.

Furthermore, the skeleton still includes the mounting panel, the mounting panel is located the function installation cavity with between the fan installation cavity, the functional unit includes high frequency transformer and the machine module that charges, be equipped with on the mounting panel respectively with high frequency transformer reaches machine module matched with mounting hole charges, just high frequency transformer reaches the machine module that charges is partial respectively to pass the mounting hole stretches into in the fan installation cavity.

Further, the high-frequency transformer reaches the machine module that charges has the limiting plate respectively, the limiting plate can't pass the mounting hole just the limiting plate with the mounting panel is kept away from the one side fixed connection of fan installation cavity.

Furthermore, a plurality of cabinet doors are further arranged on the case, and the cabinet doors respectively cover one side face of the function installation cavity, one side face of the input installation cavity and one side face of the output installation cavity.

Furthermore, the cabinet door covering the side face of the function installation cavity is located at one end, away from the fan assembly, of the air guide cover, air holes communicated with the air guide cover are formed in the cabinet door, and a dust screen is arranged in the air holes.

Furthermore, a plurality of side plates are further arranged on the case, the side plates respectively cover two opposite surfaces of the framework, one side plate and the framework form a wiring cavity in a surrounding mode, and an input wiring assembly communicated with the input assembly is arranged in the wiring installation cavity.

Furthermore, the side plate is further provided with a side door plate covering the opening of the wiring cavity, and the side door plate is detachably connected with the side plate.

The utility model has the beneficial effects that: the auxiliary inverter provided by the utility model adopts the technical scheme that two fan installation cavities for installing fan components, two function installation cavities for installing the function components, an input installation cavity for installing the input components and an output installation cavity for installing the output components are arranged on a framework of a case, namely, two sets of mutually independent function components can be installed on the framework to improve the capacity of the auxiliary inverter, so that the performance of the auxiliary inverter meets the use requirement, the two fan installation cavities are symmetrical on the framework relative to the geometric center of the case, the two function installation cavities are symmetrically arranged on the framework in an oblique angle manner, the input installation cavity and the output installation cavity are symmetrically arranged on the framework in an oblique angle manner, the mutual influence among the components on the auxiliary inverter can be reduced, the layout of the components on the framework is optimized, the space in the framework is utilized to ensure that the components are arranged on the framework more compactly, the center of gravity of the auxiliary inverter is prevented from shifting, the center of the auxiliary inverter is kept on the central axis of the auxiliary inverter, the auxiliary inverter is guaranteed to be stable on a vehicle body, air guide covers used for heat dissipation are respectively arranged in the functional installation cavities, the fan assemblies which are in one-to-one corresponding fit with the air guide covers guarantee smooth air flow in the auxiliary inverter, heat generated during operation of the auxiliary inverter is stably dissipated to the outside, and stable operation of the auxiliary inverter is facilitated.

Drawings

Fig. 1 is an exploded view of an auxiliary inverter according to a first embodiment of the present invention;

fig. 2 is an exploded view of an auxiliary inverter according to another aspect of the first embodiment of the present invention;

fig. 3 is a top view of a part of the structure of the auxiliary inverter according to the first embodiment of the utility model;

fig. 4 is a top view of an auxiliary inverter according to a first embodiment of the present invention;

fig. 5 is a schematic partial structural diagram of a chassis in an auxiliary inverter according to a first embodiment of the present invention;

fig. 6 is a schematic structural diagram of an inverter module in an auxiliary inverter according to a first embodiment of the present invention;

fig. 7 is a schematic structural diagram of the auxiliary inverter according to the first embodiment of the present invention when the guide rails are folded;

fig. 8 is a schematic structural view illustrating the unfolding of the guide rail in the auxiliary inverter according to the first embodiment of the present invention;

fig. 9 is a partial structural view of another view of the case of the auxiliary inverter according to the first embodiment of the present invention;

fig. 10 is a front view of a part of a chassis in an auxiliary inverter according to a first embodiment of the present invention;

fig. 11 is a schematic structural diagram of a high-frequency transformer in an auxiliary inverter according to a first embodiment of the present invention;

fig. 12 is a schematic structural diagram of a charger module in the auxiliary inverter according to the first embodiment of the present invention.

Description of reference numerals:

1. a chassis; 11. a cover plate; 12. a cabinet door; 13. a side plate; 14. a side door panel; 2. a framework; 21. a fan mounting cavity; 22. a functional installation cavity; 23. an input mounting cavity; 24. an output mounting cavity; 25. a mounting frame; 26. mounting a plate; 27. mounting holes; 28. a limiting plate; 3. a fan assembly; 31. a blower; 32. an inductance module; 33. an input inductance module; 34. a three-phase output inductance module; 4. a functional component; 401. a DCDC module; 402. an inversion module; 403. an absorption capacitance module; 404. a current sensor module; 405. a high-frequency transformer; 406. a charger module; 407. a voltage sensor; 408. a 110V output module; 409. a capacitive module; 410. a resistance module; 5. a wind scooper; 6. an input component; 61. an input module; 62. a DBS module; 63. an Ethernet module; 64. an input control module; 65. an input terminal row module; 7. an output component; 71. an output wiring module; 72. an output contactor module; 73. an output controller module; 74. an output voltage sensor module; 75. an output terminal row module; 8. a guide rail; 81. a sliding support; 82. a telescopic rod; 9. a wiring cavity; 91. and an input wiring assembly.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 12, an auxiliary inverter includes a chassis 1, where the chassis 1 has a framework 2, the framework 2 divides the inside of the chassis 1 into two fan installation cavities 21, two function installation cavities 22, an input installation cavity 23, and an output installation cavity 24, the two fan installation cavities 21 are symmetrically arranged with respect to a geometric center of the chassis 1, the two function installation cavities 22 are symmetrically arranged at oblique angles, the input installation cavity 23 and the output installation cavity 24 are symmetrically arranged at oblique angles, one of the fan installation cavities 21 is located between one of the function installation cavities 22 and the input installation cavity 23, the other fan installation cavity 21 is located between the other function installation cavity 22 and the output installation cavity 24, the fan installation cavities 21 are respectively provided with fan assemblies 3, the function installation cavities 22 are respectively provided with function assemblies 4 and an air guide cover 5, the wind scooper 5 is matched with the fan assemblies 3 in a one-to-one correspondence manner, the input assembly 6 is arranged in the input mounting cavity 23, and the output assembly 7 is arranged in the output mounting cavity 24.

From the above description, the beneficial effects of the present invention are: the auxiliary inverter provided by the utility model can be provided with two sets of mutually independent functional components 4 to improve the capacity of the auxiliary inverter, so that the performance of the auxiliary inverter meets the use requirement, and the components are compactly arranged on the framework 2, the space in the framework 2 is utilized to the maximum extent, the gravity center offset of the auxiliary inverter is prevented, the stability of the auxiliary inverter on a vehicle body is ensured, and the smooth air flow in the auxiliary inverter is ensured through the fan components 3 which are correspondingly matched with the air guide covers 5 one by one, so that the stable operation of the auxiliary inverter is facilitated.

Further, the functional component 4 includes a DCDC module 401 and an inverter module 402, the wind scoopers 5 are respectively disposed on the DCDC module 401 and the inverter module 402, and the wind scoopers 5 are slidably disposed with respect to the framework 2.

As can be seen from the above description, the wind scooper 5 is connected to the DCDC module 401 and the inverter module 402, and the DCDC module 401 and the inverter module 402 are installed in the framework 2 by the wind scooper 5 sliding relative to the framework 2, so as to facilitate the assembly of the inverter.

Further, a guide rail 8 is arranged on the framework 2, the guide rail 8 comprises a sliding support 81 fixedly connected with the framework 2 and a telescopic rod 82 matched with the sliding support 81, and the telescopic rod 82 is fixedly connected with the wind scooper 5.

As can be seen from the above description, the sliding bracket 81 of the guide rail 8 is fixedly connected to the framework 2, and the telescopic rod 82 moves relative to the sliding bracket 81 to drive the wind scooper 5 to enter and exit the functional installation cavity 22 on the framework 2.

Further, the functional component 4 further includes an absorption capacitor module 403 and a current sensor module 404, the absorption capacitor module 403 and the current sensor module 404 are spaced from the DCDC module 401 and the inverter module 402 in the vertical direction, the case 1 further includes a plurality of cover plates 11, the cover plates 11 respectively cover two opposite surfaces of the frame 2, and the absorption capacitor module 403 and the current sensor module 404 are respectively disposed on the cover plates 11.

As can be seen from the above description, the absorption capacitor module 403 and the current sensor module 404 in the functional assembly 4 are disposed on the cover plate 11, and the absorption capacitor module 403 and the current sensor module 404 are vertically spaced from the DCDC module 401 and the inverter module 402, so as to fully utilize the space in the installation cavity.

Further, the framework 2 further comprises a mounting plate 26, the mounting plate 26 is located between the function mounting cavity 22 and the fan mounting cavity 21, the function component 4 comprises a high-frequency transformer 405 and a charger module 406, the mounting plate 26 is provided with mounting holes 27 respectively matched with the high-frequency transformer 405 and the charger module 406, and the high-frequency transformer 405 and the charger module 406 respectively and partially penetrate through the mounting holes 27 and extend into the fan mounting cavity 21.

As can be seen from the above description, the high-frequency transformer 405 and the charger module 406 partially penetrate through the mounting hole 27 and extend into the blower mounting cavity 21 so as to connect the high-frequency transformer 405 and the charger module 406, and make full use of the remaining space in the functional mounting cavity 22 and the blower mounting cavity 21, so that the overall structure of the auxiliary inverter is more compact.

Further, the high-frequency transformer 405 and the charger module 406 are respectively provided with a limiting plate 28, and the limiting plate 28 cannot pass through the mounting hole 27, and the limiting plate 28 and the mounting plate 26 are far away from one surface of the fan mounting cavity 21 and fixedly connected with each other.

As can be seen from the above description, the positions of the high-frequency transformer 405 and the charger module 406 on the mounting plate 26 can be fixed by the matching of the limiting plate 28 and the mounting plate 26, so as to prevent the high-frequency transformer 405 or the charger module 406 from loosening.

Further, a plurality of cabinet doors 12 are further disposed on the chassis 1, and the cabinet doors 12 respectively cover one side of the function installation cavity 22, one side of the input installation cavity 23, and one side of the output installation cavity 24.

As can be seen from the above description, the plurality of cabinet doors 12 are disposed on the chassis 1 to close the functional installation cavity 22, the input installation cavity 23 and the output installation cavity 24, so as to prevent dust and other foreign matters in the outside from entering the chassis 1, and when the auxiliary inverter needs to be overhauled, the cabinet doors 12 are opened to repair or replace components in the chassis 1, thereby facilitating the later maintenance of the auxiliary inverter.

Further, the cabinet door 12 covering the side surface of the function installation cavity 22 is located at one end of the air guide cover 5 far away from the fan assembly 3, air holes communicated with the air guide cover 5 are formed in the cabinet door 12, and a dust screen is arranged in the air holes.

As can be seen from the above description, the cabinet door 12 covering the side surface of the mounting function cavity is provided with the air holes so that the air flow can enter the air guiding cover 5, the fan assembly 3 drives the air flow to flow for heat dissipation, and meanwhile, the dust screen is arranged in the air holes so as to prevent dust from entering the case 1.

Further, still be equipped with a plurality of curb plates 13 on the quick-witted case 1, curb plate 13 covers respectively the relative two sides of skeleton 2, one of them curb plate 13 with skeleton 2 encloses into wiring chamber 9 and be equipped with in the wiring installation cavity with input module 6 the input wiring subassembly 91 of switch-on.

As can be seen from the above description, the side plate 13 and the frame 2 are used to enclose the wiring cavity 9 to accommodate the input wiring assembly 91 therein so as to assist in wiring the inverter.

Furthermore, a side door plate 14 covering the opening of the wiring cavity 9 is further arranged on the side plate 13, and the side door plate 14 is detachably connected with the side plate 13.

As can be seen from the above description, the wiring operation can be conveniently performed by opening the side door panel 14 on the side panel 13.

Example one

Referring to fig. 1 to 12, a first embodiment of the present invention is: an auxiliary inverter is arranged on a rail transit vehicle and used for converting high-voltage direct current into three-phase alternating current or low-voltage direct current to provide power for equipment such as lamps and air conditioners on the vehicle and charge a storage battery of the vehicle.

As shown in fig. 1 to 3, the auxiliary inverter includes a chassis 1, the chassis 1 includes a framework 2, and a cover plate 11, a cabinet door 12, and a side plate 13 which cover openings at each side of the framework 2, the framework 2 divides the space inside the chassis 1 into two fan installation cavities 21, two function installation cavities 22, an input installation cavity 23, and an output installation cavity 24, wherein two fan installation cavities 21 are respectively provided with a set of fan assemblies 3 for accelerating the heat dissipation of the auxiliary inverter, two function installation cavities 22 are respectively provided with a function assembly 4 and two sets of the fan assemblies 3 and two sets of the function assemblies 4 are respectively and correspondingly arranged to respectively discharge the heat in the function installation cavities 22, the input installation cavity 23 is provided with an input assembly 6, and the output installation cavity 24 is provided with an output assembly 7. High-voltage direct current input from the outside is input into the functional component 4 through the input component 6, and is converted into three-phase alternating current or low-voltage direct current by the functional component 4 and then is output to various electric equipment on a vehicle from the output component 7, and the functional components 4 in the two function installation cavities 22 are independent from each other, so that the capacity of the auxiliary inverter is improved, and the performance of the auxiliary inverter meets the use requirement.

Specifically, the two fan installation cavities 21 are symmetrically arranged relative to the geometric center of the case 1, the two function installation cavities 22 are symmetrically arranged on the case 1 at an upper oblique angle, the input mounting cavity 23 and the output mounting cavity 24 are also arranged on the case 1 in an oblique angle symmetry manner, one of the fan installation cavities 21 is located between one of the function installation cavities 22 and the input installation cavity 23, the other fan installation cavity 21 is located between the other function installation cavity 22 and the output installation cavity 24, so as to reduce the mutual influence among the components by the layout of each chamber, and reasonably utilize the space in the machine case 1 to make the components distributed compactly, and after each component is arranged in the corresponding cavity, the gravity center of the auxiliary inverter can be kept on the central axis of the component, so that the central deviation is prevented, and the auxiliary inverter is further kept stable on a vehicle body after being installed on a vehicle.

Referring to fig. 1 and 5, in the present embodiment, the functional component 4 includes a DCDC module 401 and an inverter module 402, the DCDC module 401 and the inverter module 402 are respectively provided with an air guiding cover 5, and the DCDC module 401 and the inverter module 402 are arranged in parallel in the functional installation cavity 22. The functional assembly 4 further includes an absorption capacitor module 403 and a current sensor module 404, the absorption capacitor module 403 and the current sensor module 404 are arranged in parallel on the cover plate 11, and the absorption capacitor module 403 and the current sensor module 404 are arranged at intervals in the vertical direction with respect to the DCDC module 401 and the inverter module 402, that is, the DCDC module 401 and the inverter module 402 are arranged in a double-layer structure with the absorption capacitor module 403 and the current sensor module 404 in the functional installation cavity 22, so that the functional assembly 4 is arranged compactly in the functional installation cavity 22. The functional component 4 further comprises two high-frequency transformers 405 and a charger module 406, the high-frequency transformers 405 and the charger module 406 are located on one side, close to the fan installation cavity 21, in the function installation cavity 22, and the high-frequency transformers 405 and the charger module 406 partially extend into the fan installation cavity 21 respectively, so that the spaces of the function installation cavity 22 and the fan installation cavity 21 are fully utilized, and meanwhile the high-frequency transformers 405 and the charger module 406 are conveniently connected with other devices respectively. The DCDC module 401, the inverter module 402, the wind scooper 5, the absorption capacitor module 403, the current sensor module 404, the high-frequency transformer 405, and the charger module 406 are respectively arranged in the two functional installation cavities 22, and the modules of the same kind are symmetrically arranged with respect to the geometric center of the case 1, so that the weight of the functional components 4 is uniformly distributed in the case 1.

In detail, the functional component 4 in one of the functional installation cavities 22 further includes a voltage sensor 407 and a 110V output module 408, the voltage sensor 407 and the 100V output module are disposed near the side plate 13, to fully utilize the remaining space in the functional installation cavity 22, the functional component 4 of another functional installation cavity 22 further includes a capacitance module 409 and a resistance module 410, the capacitance module 409 and the resistance module 410 are disposed near the side plate 13, so that the two sets of functional components 4 on the auxiliary inverter can meet different use requirements of the railway vehicle, and the voltage sensor 407 and the 110V output module 408, the capacitor module 409 and the resistor module 410 are symmetrically arranged with respect to the geometric center of the chassis 1, so as to ensure that the center of the chassis 1 is located on the central axis thereof.

Referring to fig. 1, the input module 6 includes an input module 61, a DBS module 62, an ethernet module 63, an input control module 64, and an input terminal row module 65, where the input module 61, the DBS module 62, the ethernet module 63, and the input terminal row module 65 are respectively installed on different inner peripheral walls of the input installation cavity 23, the input control module 64 is set up in a manner of avoiding other input modules 6, and no input module 6 is set up on the cabinet door 12 closing the input installation cavity 23, so as to open the cabinet door 12 to operate the input module 6 or debug the input module 6.

Specifically, be close to input installation cavity 23 curb plate 13 with skeleton 2 encloses into wiring chamber 9, be equipped with in wiring chamber 9 with input assembly 6 electric connection's input wiring subassembly 91, so that with input assembly 6 and outside electric wire or equipment switch-on, and should be equipped with the cover on the curb plate 13 side door board 14 of wiring chamber 9 opening part, side door board 14 with curb plate 13 can dismantle the connection so that be used for with side door board 14 is opened and is worked a telephone switchboard.

As shown in fig. 2, the output assembly 7 includes an output wiring module 71, an output contactor module 72, an output controller module 73, an output voltage sensor module 74, and an output terminal row module 75, where the output wiring module 71, the output contactor module 72, the output voltage sensor module 74, and the output terminal row module 75 are respectively installed on different inner peripheral walls of the output installation cavity 24, the output control module is installed in a manner of avoiding other output assemblies 7, and the cabinet door 12 that closes the output installation cavity 24 is not provided with any output assembly 7, so that the cabinet door 12 is opened to conveniently maintain or debug the output assembly 7.

Preferably, the input assembly 6 and the output assembly 7 are respectively arranged in the input installation cavity 23 and the output installation cavity 24 according to the weight of each module, so that the modules with similar weights in the input assembly 6 and the output assembly 7 are symmetrically arranged relative to the geometric center of the chassis 1, and the deviation of the center of the auxiliary inverter caused by the weights of the input assembly 6 and the output assembly 7 is avoided.

Referring to fig. 1 and 3, the fan assembly 3 includes a blower 31, a slot is formed in the cover plate 11 for air blown by the blower 31 to pass through, the blower 31 is communicated with the wind scooper 5, the cabinet door 12 covering the functional installation cavity 22 is located at one end of the wind scooper 5 away from the blower 31, and a plurality of air holes are formed in the cabinet door 12, so that external air can pass through the cabinet door 12 and enter the wind scooper 5, and the air in the wind scooper 5 is blown out of the auxiliary inverter by the blower 31, so that circulation of the air in the functional installation cavity 22 is realized, heat generated by operation of the functional assembly 4 is discharged, faults caused by overhigh temperature of the functional assembly 4 are prevented, and operation of the auxiliary inverter at the temperature is ensured. And in order to prevent dust from entering the auxiliary inverter, a dust screen is respectively arranged in each air vent.

In detail, an inductance module 32, an input inductance module 33 and a three-phase output inductance module 34 are further arranged in the fan installation cavity 21, the inductance module 32, the input inductance module 33 and the three-phase output inductance module 34 are arranged in a gap between the air blower 31 and the framework 2, and the space in the fan installation cavity 21 is fully utilized while heat generated by the inductance module 32, the input inductance module 33 and the three-phase output inductance module 34 is dissipated from the open groove, so that the integral temperature of the auxiliary inverter is ensured to be within a proper range.

With reference to fig. 4 to 8, in order to facilitate assembly of the auxiliary inverter, the wind scooper 5 is slidably disposed on the framework 2, the mounting frame 25 is disposed on the framework 2, the guide rail 8 matched with the mounting frame 25 is disposed on a side surface of the wind scooper 5, the guide rail 8 includes a sliding support 81 and an expansion link 82 movably disposed in the sliding support 81, the sliding support 81 is fixedly connected to the mounting frame 25, one end of the expansion link 82 is fixedly connected to the wind scooper 5, and the wind scooper 5 and the DCDC module 401 or the inverter module 402 connected to the wind scooper 5 can be conveniently taken into or out of the framework 2 through the slide rail, so that the wind scooper 5 is conveniently aligned with the blower 31, and the DCDC module 401 or the inverter module 402 is conveniently mounted in the functional mounting cavity 22.

Optionally, the guide rails 8 are respectively disposed on two opposite sides of the air guiding cover 5 to ensure that the air guiding cover 5 and the DCDC module 401 or the inverter module 402 are stable when sliding relative to the framework 2, and the telescopic rod 82 has a plurality of telescopic joints to ensure that the air guiding cover 5 and the DCDC module 401 or the inverter module 402 can completely exit the functional installation cavity 22 when being taken out from the framework 2, so as to facilitate maintenance of the DCDC module 401 and the inverter module 402.

As shown in fig. 9 to 12, a plurality of mounting plates 26 are further disposed on the framework 2, and the mounting plates 26 are respectively located between the adjacent fan mounting cavity 21 and the function mounting cavity 22, between the fan mounting cavity 21 and the input mounting cavity 23, and between the fan mounting cavity 21 and the output mounting cavity 24, so as to separate the chambers on the framework 2 and reduce mutual influence between the components. And a through hole for passing part of the air guide cover 5 is formed in the mounting plate 26 between the fan mounting cavity 21 and the function mounting cavity 22, so that the air guide cover 5 is matched with the air blower 31, and a mounting hole 27 for passing part of the high-frequency transformer 405 and part of the charger module 406 is further formed in the mounting plate 26, so that part of the high-frequency transformer 405 and part of the charger module 406 can extend into the fan mounting cavity 21, thereby ensuring that the space in the framework 2 is fully used, and improving the integration level of the auxiliary inverter.

Specifically, high frequency transformer 405 reaches be equipped with limiting plate 28 on the machine module of charging 406 respectively, limiting plate 28's size is greater than the size of mounting hole 27 makes limiting plate 28 can't pass mounting hole 27, just limiting plate 28 with mounting panel 26 keeps away from the one side fixed connection of fan installation cavity 21, with will high frequency transformer 405 and machine module of charging 406 are in position fixation in the function installation cavity 22, and the convenience will function block 4 assembles extremely in the function installation cavity 22.

Referring to fig. 1 to 3, the structure of the framework 2 and the installation positions of the components in the chassis 1 are designed, so that the space inside the chassis 1 is reasonably utilized to make the overall layout of the auxiliary inverter compact, and thus a single auxiliary inverter provided in this embodiment weighs about 1250kg, whereas a single conventional similar product weighs about 800 kg.

In summary, the auxiliary inverter provided by the utility model divides the interior of the chassis into a plurality of chambers by designing the structure of the framework, each chamber corresponds to a functional region and is respectively provided with the fan assembly, the functional assembly, the input assembly, the output assembly and the like, and the layout of each module of each assembly in each chamber is arranged, so that each module is compactly distributed in the chassis, the space in the chassis is fully utilized to reduce the increase of the volume of the chassis and the weight of the framework, the performance of the auxiliary inverter meets the use requirement, the overall mass increase range is small, and the auxiliary inverter is convenient to install; each cavity in the auxiliary inverter is arranged in a central symmetry or an oblique angle symmetry mode, and each module in each cavity is also arranged in a central symmetry mode, so that the center of the auxiliary inverter is kept on the central axis of the auxiliary inverter, the overall weight of the auxiliary inverter is uniformly distributed, and the stability of the rail train in operation is improved; two sets of independent functional components are arranged in the auxiliary inverter, and the two sets of functional components are respectively provided with an independent fan component and an air guide cover for heat dissipation, so that smooth circulation of air flow in the auxiliary inverter is ensured, heat generated during operation of the auxiliary inverter is dissipated to the outside, the temperature during operation of the auxiliary inverter is kept in a proper range, and the long-time stable operation of the auxiliary inverter is facilitated.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims

1. An auxiliary inverter, includes the quick-witted case, quick-witted case has the skeleton, its characterized in that: the framework divides the interior of the case into two fan installation cavities, two function installation cavities, an input installation cavity and an output installation cavity, the two fan installation cavities are symmetrically arranged relative to the geometric center of the case, the two function installation cavities are symmetrically arranged at an oblique angle, the input installation cavity and the output installation cavity are symmetrically arranged at an oblique angle, one of the fan installation cavities is positioned between one of the function installation cavities and the input installation cavity, the other fan installation cavity is positioned between the other function installation cavity and the output installation cavity, the fan installation cavities are respectively provided with a fan component, the function installation cavities are respectively provided with a function component and a wind guide cover, the wind scooper is matched with the fan assemblies in a one-to-one correspondence mode, an input assembly is arranged in the input installation cavity, and an output assembly is arranged in the output installation cavity.

2. The auxiliary inverter of claim 1, wherein: the functional component comprises a DCDC module and an inversion module, the DCDC module and the inversion module are respectively provided with the wind scooper, and the wind scooper is arranged in a sliding mode relative to the framework.

3. The auxiliary inverter of claim 2, wherein: the guide rail is arranged on the framework and comprises a sliding support fixedly connected with the framework and a telescopic rod matched with the sliding support, and the telescopic rod is fixedly connected with the air guide cover.

4. The auxiliary inverter of claim 2, wherein: the functional unit still includes absorption capacitance module and current sensor module, absorption capacitance module reaches current sensor module with the DCDC module reaches the contravariant module sets up at vertical direction interval, the machine case still includes a plurality of laps, the apron covers respectively the relative two sides of skeleton, absorption capacitance module and current sensor module set up respectively on the apron.

5. The auxiliary inverter of claim 1, wherein: the framework further comprises a mounting plate, the mounting plate is located between the function mounting cavity and the fan mounting cavity, the function component comprises a high-frequency transformer and a charger module, the mounting plate is provided with mounting holes matched with the high-frequency transformer and the charger module respectively, and the high-frequency transformer and the charger module partially penetrate through the mounting holes and extend into the fan mounting cavity respectively.

6. The auxiliary inverter of claim 5, wherein: the high-frequency transformer reaches the machine module that charges has the limiting plate respectively, the limiting plate can't pass the mounting hole just the limiting plate with the mounting panel is kept away from the one side fixed connection of fan installation cavity.

7. The auxiliary inverter of claim 1, wherein: the case is further provided with a plurality of cabinet doors, and the cabinet doors cover one side face of the function installation cavity, one side face of the input installation cavity and one side face of the output installation cavity respectively.

8. The auxiliary inverter of claim 7, wherein: the cabinet door covering the side face of the function installation cavity is located at one end, away from the fan assembly, of the air guide cover, air holes communicated with the air guide cover are formed in the cabinet door, and a dust screen is arranged in the air holes.

9. The auxiliary inverter of claim 1, wherein: the machine case is further provided with a plurality of side plates, the side plates respectively cover two opposite sides of the framework, one side plate and the framework are enclosed to form a wiring cavity, and an input wiring assembly communicated with the input assembly is arranged in the wiring installation cavity.

10. The auxiliary inverter of claim 9, wherein: the side plate is further provided with a side door plate covering the opening of the wiring cavity, and the side door plate is detachably connected with the side plate.