CN210692521U

CN210692521U - Composite radiator for power device of guide rail electric car

Info

Publication number: CN210692521U
Application number: CN201922079750.3U
Authority: CN
Inventors: 郑旭阳; 李守蓉; 寇娜; 赵一洁; 刘婷; 董启政
Original assignee: CRRC Xian Yonge Electric Co Ltd
Current assignee: CRRC Xian Yonge Electric Co Ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-06-05
Anticipated expiration: 2029-11-27

Abstract

The utility model belongs to the technical field of trolley-bus traction systems, and relates to a composite radiator for a power device of a guide rail trolley-bus, which comprises a composite radiator substrate, an inversion power unit, a chopping power unit and an energy feedback power unit which are arranged on the composite radiator substrate, wherein copper heat pipes are embedded in the substrates of the installation areas of the inversion power unit, the energy feedback power unit and the chopping power unit; the fin assembly of the composite radiator comprises a left fin, a right fin and a plurality of interval fins positioned between the left fin and the right fin, and the interval fins are of a sawtooth structure. The composite radiator radiates heat by adopting a mode of combining forced air cooling and embedding the copper heat pipe, has simple structure and low cost, not only realizes the radiation of the IGBT of the traction power module, but also reduces the complexity of the power module, realizes the high integration of the current transformer main circuit and improves the working reliability of the power module.

Description

Composite radiator for power device of guide rail electric car

Technical Field

The utility model belongs to the technical field of trolley-bus traction system, a traction power module of guide rail trolley-bus is related to, concretely relates to composite radiator for guide rail trolley-bus power device.

Background

With the rapid development of power electronic technology, the application of a power converter with high power density is increasingly wide, and in order to realize the characteristics of light weight, miniaturization, convenience in maintenance and the like of the converter, a traction power module and a bidirectional DC charger of the converter are integrated into one converter. And a plurality of power devices for inversion, chopping and bidirectional DC-DC charging are installed and integrated to form a variable current power unit.

The traction inversion and chopping power module is applied to a guide rail electric car traction system and comprises an inversion unit, a chopping unit and an energy control unit, so that a proper three-phase alternating-current voltage is provided for a guide rail electric car traction motor, and a super capacitor is charged through the energy control unit. In the guide rail electric car converter cabinet body, the traction power module adopts a full-control rectification mode, namely a power device IGBT, and the heat dissipation mode adopts the combination of forced air cooling and partial region heat pipe heat dissipation, so that the structure is simple, the reliability is high, and the heat dissipation capability of the traction module can be enhanced.

The existing power module radiator adopts a composite radiator, so that the radiating power is low, and the layout of a power device is simple. The heat dissipation power is not large, and the layout density of the power device is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a composite heat radiator for guide rail trolley-bus power device, adopt forced air cooling and inhomogeneous mode of burying the copper heat pipe underground and combining together to dispel the heat, simple structure low cost has not only realized pulling power module IGBT's heat dissipation, has still reduced power module's complexity to realized the high integration of converter main circuit, improved the reliability of power module work.

The utility model aims at solving through the following technical scheme:

the composite radiator for the power device of the guide rail electric car comprises a composite radiator substrate, and an inversion power unit, a chopping power unit and an energy feedback power unit which are arranged on the composite radiator substrate, wherein copper heat pipes are embedded in the substrates of the installation areas of the inversion power unit, the energy feedback power unit and the chopping power unit; the fin assembly of the composite radiator comprises a left fin, a right fin and a plurality of interval fins positioned between the left fin and the right fin, and the interval fins are of a sawtooth structure.

Furthermore, the inversion power unit is located on the lower portion of the composite radiator substrate, the chopping power unit is arranged above the inversion power unit, and the energy feedback power unit is arranged above the chopping power unit.

Furthermore, the inversion power unit consists of 3 IGBTs, and the 3 IGBTs are distributed on the lower part of the composite radiator substrate in parallel; the energy feedback power unit and the chopping power unit respectively adopt 1 IGBT.

Furthermore, the fin assemblies are all made of aluminum materials with low cost and light weight.

Furthermore, a plurality of lifting lugs and a mechanical interface for connecting the converter cabinet are arranged on the composite radiator substrate; the lifting lug interface is used for facilitating safe and nondestructive carrying of the composite radiator, and the mechanical interface is used for connecting the composite radiator with the converter cabinet.

Further, the outer surface of the composite heat sink substrate should be treated to ensure good electrical conductivity and heat transfer between the heat sink substrate and the components.

Furthermore, the copper heat pipes are unevenly embedded in the substrate of each power unit mounting area, so that heat can be better transferred to the aluminum substrate of the radiator and the aluminum radiating fins, and the radiating efficiency is improved.

Furthermore, the height of the composite radiator is 110mm, the height of the fins of the fin assembly is 93-100mm, the thickness of the fins is 4.5-5.5mm, and the distance between adjacent fins is 4.5-5.5 mm.

Compared with the prior art, the utility model provides a technical scheme includes following beneficial effect: the composite radiator radiates heat by adopting a mode of combining forced air cooling and embedded copper heat pipes, has simple structure and low cost, not only realizes the radiation of the IGBT of the traction power module, but also reduces the complexity of the power module, realizes the high integration of the converter main circuit and improves the working reliability of the power module; meanwhile, interval fins of the composite radiator are designed into a zigzag structure, so that the radiating efficiency is improved by increasing the radiating area.

In addition, a plurality of lifting lugs and a mechanical interface for connecting the converter cabinet are arranged on the composite radiator substrate; the lifting lug interface is used for facilitating safe and nondestructive carrying of the composite radiator; the mechanical interface is used for connecting the composite radiator with the converter cabinet.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a composite radiator for a power device of a rail trolley bus provided by the present invention;

fig. 2 is a layout diagram of 5 IGBTs on a composite heat sink substrate according to an embodiment of the present invention;

fig. 3 is a schematic view of the power module installation based on the composite heat sink according to the present invention.

Wherein: 1. a composite heat sink substrate; 2. an inversion power unit; 3. a chopper power unit; 4. an energy feedback power unit; 5. a copper heat pipe; 6. a left wing; 7. a right wing; 8. interval fins; 9. a cover plate assembly; 10. an insulating guard; 11. a composite radiator; 12. driving a mechanical support assembly; 13. and a power device.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the following claims.

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments.

Examples

Referring to fig. 1, the utility model provides a composite heat radiator for power device of trolley bus, including composite heat radiator base plate 1, set up contravariant power unit 2, chopper power unit 3 and energy feedback power unit 4 on composite heat radiator base plate 1, all bury copper heat pipe 5 in the base plate of the installation region of contravariant power unit 2, chopper power unit 3, energy feedback power unit 4 underground; the fin assembly of the composite radiator comprises a left fin 6, a right fin 7 and a plurality of interval fins 8 positioned between the left fin 6 and the right fin 7, and the interval fins 8 are of a sawtooth structure.

Preferably, the copper heat pipes 5 are embedded in the substrate in different power unit mounting areas according to different power consumption of each power unit, so as to better transfer heat to the aluminum substrate of the heat sink and the aluminum heat dissipation fins, thereby improving heat dissipation efficiency.

Further, the inverter power unit 2 is located at the lower portion of the composite radiator substrate 1, the chopper power unit 3 is arranged above the inverter power unit 2, and the energy feedback power unit 4 is arranged above the chopper power unit 3.

Further, referring to fig. 2, the inverter power unit 2 is composed of 3 IGBTs, and the 3 IGBTs are distributed in parallel on the lower portion of the composite radiator substrate 1; the chopping power unit 3 and the energy feedback power unit 4 respectively adopt 1 IGBT.

Further, a plurality of lifting lugs and a mechanical interface for connecting the converter cabinet are arranged on the composite radiator substrate 1; the lifting lug interface is used for facilitating safe and nondestructive carrying of the composite radiator, and the mechanical interface is used for connecting the composite radiator with the converter cabinet.

Further, the outer surface of the composite heat sink substrate 1 should be treated to ensure good electrical conductivity and heat transfer between the heat sink substrate 1 and the components.

Further, the height of the composite radiator is 108-115mm, and preferably 110 mm.

Further, the height of the fins of the fin assembly is 93-100mm, preferably 95 mm; the thickness of the fins is 4.5-5.5mm, preferably 5 mm; the spacing between adjacent fins is 4.5-5.5mm, preferably 5 mm.

To sum up, the utility model provides a this kind of a composite heat radiator for guide rail trolley-bus power device installs energy feedback power device, chopper power device and contravariant power device on the radiator base plate 1. The mounting surface of the radiator substrate 1 is provided with a mechanical mounting hole so as to meet the requirements of mounting of an outer frame of a power module, mounting of a driving board, mounting of a composite busbar and the like. Referring to fig. 3, a specific power module installation schematic diagram specifically includes: the whole traction power module is characterized in that a power device 11, a composite busbar and insulation protection device 10, a shielding plate and mechanical supporting device 12 thereof and a cover plate assembly 9 are arranged layer by taking a composite radiator substrate 1 as a reference, and the whole traction power module is compact in structure and simple in layout.

Therefore, the composite radiator provided by the utility model adopts the modular design, has compact structure, simple layout, small volume, convenient installation, maintenance and replacement and reduced maintenance cost; the heat dissipation efficiency is improved by effectively dissipating the heat of the power device 13 in time by adopting a heat dissipation mode combining forced air cooling and the heat dissipation of the unevenly embedded copper heat pipe 5; in the design with good heat dissipation efficiency, the IGBT with high power can be selected, and then the power of the whole power module is improved. In addition, the composite radiator meets the requirement of heat dissipation of a power device, simultaneously provides mechanical interfaces (mechanical mounting holes) of other auxiliary components, and simultaneously realizes physical isolation of low-voltage driving board signals and high-voltage electrical connection of the power device 13 through the driving mechanical supporting component 12, thereby avoiding unnecessary electromagnetic interference.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.

It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. The composite radiator for the power device of the guide rail electric car is characterized by comprising a composite radiator substrate (1), and an inversion power unit (2), a chopping power unit (3) and an energy feedback power unit (4) which are arranged on the composite radiator substrate (1), wherein copper heat pipes (5) are embedded in the substrates of the installation areas of the inversion power unit (2), the chopping power unit (3) and the energy feedback power unit (4); the fin assembly of the composite radiator comprises a left fin (6), a right fin (7) and a plurality of interval fins (8) located between the left fin (6) and the right fin (7), and the interval fins (8) are of a sawtooth structure.

2. The composite radiator for the tram power device according to claim 1, wherein the inverter power unit (2) is located at a lower portion of the composite radiator substrate (1), the chopper power unit (3) is disposed above the inverter power unit (2), and the energy feedback power unit (4) is disposed above the chopper power unit (3).

3. The composite radiator for the power device of the trolley bus according to claim 2, wherein the inverter power unit (2) is composed of 3 IGBTs, and the 3 IGBTs are distributed in parallel on the lower part of the composite radiator substrate (1); the chopping power unit (3) and the energy feedback power unit (4) respectively adopt 1 IGBT.

4. The composite heat sink for trolley power units as recited in claim 1, wherein said fin assemblies are each made of aluminum.

5. The composite radiator for the power device of the trolley bus according to claim 1, wherein the composite radiator substrate (1) is provided with a plurality of lifting lugs and a mechanical interface for connecting a converter cabinet.

6. The composite heat sink for the trolley power device as claimed in claim 1, wherein the height of the composite heat sink is 108-115 mm.

7. The composite heat sink for a trolley power device according to claim 1, wherein the fin assembly has a fin height of 93-100mm, a fin thickness of 4.5-5.5mm, and a spacing between adjacent fins of 4.5-5.5 mm.