CN201594787U - Double-sided water-cooling radiating substrate for converter power module - Google Patents

Double-sided water-cooling radiating substrate for converter power module Download PDF

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Publication number
CN201594787U
CN201594787U CN2009202542254U CN200920254225U CN201594787U CN 201594787 U CN201594787 U CN 201594787U CN 2009202542254 U CN2009202542254 U CN 2009202542254U CN 200920254225 U CN200920254225 U CN 200920254225U CN 201594787 U CN201594787 U CN 201594787U
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China
Prior art keywords
water
radiating
power module
water channel
substrate
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Expired - Lifetime
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CN2009202542254U
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Chinese (zh)
Inventor
陈广泰
刘革莉
姚小强
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CRRC Yongji Electric Co Ltd
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Yongji Xinshisu Electric Equipment Co Ltd
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Priority to CN2009202542254U priority Critical patent/CN201594787U/en
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Abstract

The utility model relates to the fields of railway locomotives, electricity multiple units (EMU) and industrial control, in particular to a cooling technology for a high-power converter, and more particularly relates to a double-sided water-cooling radiating substrate for a converter power module, which solves the problems of the existing high-power converter power module that the volume of a radiator is larger, the radiating effect is not good, and the manufacturing cost is higher. The device is connected with a converter circulating water system and comprises a radiating substrate formed by soldering an upper cover plate and a lower substrate, wherein the end surface of the lower substrate is provided with a water inlet and a water outlet which connect a water channel with external circulating water; the outer surfaces of the upper cover plate and the lower substrate are provided with mounting holes; the inner surface of the lower substrate is provided with the groove-shaped water channel; and square wave-shaped radiating fins formed by regular bending are placed in the water channel. By using the device, double-sided water-cooling radiation is realized, thus reducing the thermal resistance of the radiating substrate and improving the radiating efficiency on the one hand, and reducing the difficulty of production process and the production cost on the other hand.

Description

Two-side water cooling substrate of power module of current transformer
Technical field
The utility model relates to railway locomotive, motor train unit and industrial control field, relates in particular to the high-power converter cooling technology, is specially two-side water cooling substrate of power module of current transformer.
Background technology
Along with the fast development of power electronic technology, high-power converter has obtained extensive use, and power model is as the core component of current transformer, and its cooling technology is very crucial, directly affects the current transformer reliability of operation.The main type of cooling of existing power model has: natural cooling, forced air cooling, heat pipe cooling, oil circulation cooling, boiler water circulation cooling, boiling cooling etc., wherein the boiler water circulation cooling is little with its good cooling results, heat-radiating substrate volume, particularly can more and more find broad application with the shared same water circulation system of other parts that need cool off in the system.
At present, the heat radiation of domestic current transformator power module, the particularly heat radiation of high-power converter, main forced air cooling, heat pipe cooling or the walking wind natural cooling mode of adopting, these radiating modes all are the heat radiations of radiator heat-dissipation substrate single face, radiating effect to power device is relatively poor, and the heat-radiating substrate volume is bigger; Though and foreign technology adopts two-sided heat-radiating substrate, heat-radiating substrates and the integrated technology of radiating fin of adopting more, manufacturing process complexity, cost are higher.
Summary of the invention
The utility model is in order to solve existing high-power converter power model radiator, and volume is bigger than normal, radiating effect is not good, the complicated cost problem of higher of manufacturing process, and a kind of novel two-side water cooling substrate of power module of current transformer is provided.
The utility model is concrete to adopt following technical scheme to realize: comprise the heat-radiating substrate that is formed by upper cover plate and infrabasal plate soldering, the infrabasal plate end face is provided with water inlet and the delivery port that connects water channel and outer loop water, the outer surface of upper cover plate and infrabasal plate is (according to the common installation site of power component, described outer surface is meant the upper surface of upper cover plate and the lower surface of lower cover) on have installing hole, on the inner surface (being the face that is in contact with one another of infrabasal plate and upper cover plate) of infrabasal plate, offer the grooved water channel, be placed with the square wave shape radiating fin that forms by regular bending in the water channel.
Described water channel is to process tank on the infrabasal plate inner surface, place radiating fin in the tank through design, use and be out of shape Vacuum Soldering Technology little, the joint smooth and beautiful appearance, upper cover plate and infrabasal plate are welded together, form the water channel of sealing, the heat that dissipates when IGBT (this installs described power device and mainly is meant IGBT) works like this is transferred on the radiating fin by heat conducting mode, be transferred to cooling fluid (recirculated water) by radiating fin again, take away by liquid circulation, guarantee that the IGBT junction temperature is no more than rated junction temperature, reaches the purpose of operate as normal.The infrabasal plate end face is provided with recirculated water and imports and exports, all use quick water swivel, make things convenient for being connected of water cooling substrate and water circulation system, connect and have fast, convenient and safe characteristics when separating, water swivel can be selected the industry water connector of STAUBLI company for use fast.Cooling fluid in the water channel can adopt water and ethylene glycol mixtures body, and ratio can further be determined according to the temperature of power device environment for use.
Compared with prior art, the two-side water cooling substrate of power module of current transformer that the utility model provides has following beneficial effect: this device radiation substrate volume is littler and can dispel the heat by two-sided installation power device, radiating effect is better, improved the radiating effect of high-power converter power model, current transformer can be moved more reliably; Simultaneously, adopt water-cooled radiating mode shared current transformer circulation to dispel the heat, the technical radiating fin that uses particular design, the thermal resistance that has reduced on the one hand heat-radiating substrate has improved radiating efficiency, reduced on the other hand manufacture craft difficulty, reduced cost of manufacture.
Description of drawings
Fig. 1 is the structural representation of two-side water cooling substrate of power module of current transformer described in the utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the structural representation of water channel described in the utility model;
Fig. 5 is the structural representation of the two-sided constant power device of the utility model;
Fig. 6 is the A-A cutaway view of Fig. 1;
The enlarged drawing of radiating fin among Fig. 7 Fig. 6;
Fig. 8 is the scheme of installation of two-side water cooling substrate of power module of current transformer described in the utility model.
Among the figure: 1-upper cover plate, 2-infrabasal plate, the quick water swivel of 3-, 4-radiating fin, 5-delivery port, 6-water inlet, 7-installing hole, 8-power device IGBT, 9-water channel.
Embodiment
Two-side water cooling substrate of power module of current transformer, comprise the heat-radiating substrate that forms by cover plate 1 and infrabasal plate 2 solderings, infrabasal plate 2 end faces are provided with water inlet 6 and the delivery port 5 that connects water channel 9 and outer loop water, the outer surface of upper cover plate 1 and infrabasal plate 2 is (according to the common installation site of power component, described outer surface is meant the upper surface of upper cover plate and the lower surface of lower cover) on have installing hole 7, on the inner surface (being the face that is in contact with one another of infrabasal plate 2 and upper cover plate 1) of infrabasal plate 2, offer grooved water channel 9, be placed with the square wave shape radiating fin 4 that forms by regular bending in the water channel 9.
Described water channel 9 is to process tank on infrabasal plate 2 inner surfaces, place radiating fin 4 in the tank through design, use distortion little, the Vacuum Soldering Technology of joint smooth and beautiful appearance, upper cover plate 1 and infrabasal plate 2 are welded together, form the water channel of sealing, the heat that dissipates when IGBT (this installs described power device and mainly is meant IGBT) works like this is transferred on the radiating fin 4 by heat conducting mode, be transferred to cooling fluid (recirculated water) by radiating fin 4 again, take away by liquid circulation, guarantee that the IGBT junction temperature is no more than rated junction temperature, reaches the purpose of operate as normal.Water inlet 6 and delivery port 5 places that water channel 9 two ends connect are connected to quick water swivel 3, can more convenient water cooling substrate and being connected of water circulation system, have fast, convenient and safe characteristics when connecting separation, water swivel can be selected the industry water connector of STAUBLI company for use fast.Cooling fluid in the water channel can adopt water and ethylene glycol mixtures body, and ratio can further be determined according to the temperature of power device environment for use.
Concrete, the heat-radiating substrate material is an aluminium alloy plate, allow no copper boiler water circulation, (lower surface of the upper surface of upper cover plate 1 and infrabasal plate 2) is provided with the IGBT installing hole 7 that is embedded with steel-wire screw-socket on the heat-radiating substrate biside plate face, to satisfy mounting torque, can two-sided fixed installation power device, carry out the heat radiation of high-power power device.Be provided with at least two radiating fins 4 in the water channel 9, horizontal phase difference of half square width is staggeredly placed (as shown in Figure 7) between the adjacent radiating fin 4, both reduced the manufacture craft and the production cost of heat-radiating substrate, the thermal resistance that has reduced heat-radiating substrate again gets a promotion the radiating effect of device.Described water channel 9 is square wave type in infrabasal plate 2 arranges, makes that each power device can be fast by radiating fin 4 in the water channel and cooling agent heat radiation.
When two-side water cooling substrate of power module of current transformer described in the utility model is specifically worked: the IGTB that it is 2.5kW that 8 maximum heat radiation powers can be installed in the water cooling substrate both sides (every each 4), the contact area of every IGBT and water plate is 140 * 190mm, and mounting torque is 5Nm.
Water channel designing requirement in the infrabasal plate 2: the cooling fluid operating pressure is 5bar, and nominal flow rate is 40L/min, and hydraulic pressure descends and is no more than 1.3bar (comprising quick water swivel), and the corresponding water cooling substrate zone thermal resistance of each IGBT packing is 8 ℃/kW to the maximum.
Because thermal resistance is mainly derived from the thin layer of fluid on the heat-transfer area, is also referred to as the boundary layer; Increase flow rate of fluid and perturbation, but the attenuate boundary layer reduces thermal resistance.Fluid in this device (recirculated water) flow velocity is certain, by increasing disturbance, also can make thermal resistance continue to descend.Concrete principle is: in the joint, recirculated water is staggeredly placed by radiating fin in the water channel when undergauge place that forms enters hole enlargement place boundary layer separation can take place, produce recirculated water clear area in hole enlargement place this moment, part recirculated water can flow backwards and return to fill in the blanks the district, in the hole enlargement chamber, produce like this and flow to two kinds of opposite fluids, promptly form vortex, because the existence of vortex, aggravated the collision between the recirculated water particle, boundary layer and viscous flow internal layer have greatly been destroyed, make its reduced thickness, thermal resistance reduces.By water channel 9 and radiating fin 4 placed within are designed like this, greatly reduce the thermal resistance of heat-radiating substrate, make the radiating effect of water cooling substrate better.

Claims (5)

1. two-side water cooling substrate of power module of current transformer, comprise the heat-radiating substrate that forms by upper cover plate (1) and infrabasal plate (2) soldering, infrabasal plate (2) end face is provided with water inlet (6) and the delivery port (5) that connects water channel (9) and outer loop water, it is characterized in that: have installing hole (7) on the outer surface of upper cover plate (1) and infrabasal plate (2), on the inner surface of infrabasal plate (2), offer grooved water channel (9), be placed with the square wave shape radiating fin (4) that forms by regular bending in the water channel (9).
2. two-side water cooling substrate of power module of current transformer as claimed in claim 1 is characterized in that: be provided with at least two radiating fins (4) in the described water channel (9), horizontal phase difference of half square width is staggeredly placed between the adjacent radiating fin (4).
3. two-side water cooling substrate of power module of current transformer as claimed in claim 1 or 2 is characterized in that: described water channel (9) is square wave type and arranges on infrabasal plate (2) inner surface.
4. two-side water cooling substrate of power module of current transformer as claimed in claim 1 or 2 is characterized in that: water inlet (6) and delivery port (5) that water channel (9) two ends connect locate to be connected to quick water swivel (3).
5. two-side water cooling substrate of power module of current transformer as claimed in claim 3 is characterized in that: water inlet (6) and delivery port (5) that water channel (9) two ends connect locate to be connected to quick water swivel (3).
CN2009202542254U 2009-10-24 2009-10-24 Double-sided water-cooling radiating substrate for converter power module Expired - Lifetime CN201594787U (en)

Priority Applications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103701302A (en) * 2013-12-13 2014-04-02 常州联力自动化科技有限公司 Heat radiating device of mine frequency converter
CN103944359A (en) * 2014-05-08 2014-07-23 安徽江淮汽车股份有限公司 Integrated structure of drive controller and direct current converter
CN110247538A (en) * 2018-03-09 2019-09-17 本田技研工业株式会社 Power inverter
CN110518814A (en) * 2019-09-19 2019-11-29 江西精骏电控技术有限公司 A kind of two-sided cooling structure for vehicle-mounted inverter
WO2022193370A1 (en) * 2021-03-19 2022-09-22 精进电动科技股份有限公司 Capacitor and power device assembly having cooling structure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103701302A (en) * 2013-12-13 2014-04-02 常州联力自动化科技有限公司 Heat radiating device of mine frequency converter
CN103944359A (en) * 2014-05-08 2014-07-23 安徽江淮汽车股份有限公司 Integrated structure of drive controller and direct current converter
CN103944359B (en) * 2014-05-08 2016-05-18 安徽江淮汽车股份有限公司 The integrated morphology of a kind of driving governor and direct current transducer
CN110247538A (en) * 2018-03-09 2019-09-17 本田技研工业株式会社 Power inverter
CN110247538B (en) * 2018-03-09 2021-03-19 本田技研工业株式会社 Power conversion device
CN110518814A (en) * 2019-09-19 2019-11-29 江西精骏电控技术有限公司 A kind of two-sided cooling structure for vehicle-mounted inverter
WO2022193370A1 (en) * 2021-03-19 2022-09-22 精进电动科技股份有限公司 Capacitor and power device assembly having cooling structure

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GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20100929

Effective date of abandoning: 20091024