EP0585611A2 - Résistance de puissance pour se froidissement liquide - Google Patents

Résistance de puissance pour se froidissement liquide Download PDF

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Publication number
EP0585611A2
EP0585611A2 EP93112149A EP93112149A EP0585611A2 EP 0585611 A2 EP0585611 A2 EP 0585611A2 EP 93112149 A EP93112149 A EP 93112149A EP 93112149 A EP93112149 A EP 93112149A EP 0585611 A2 EP0585611 A2 EP 0585611A2
Authority
EP
European Patent Office
Prior art keywords
flat
power resistor
resistor according
coolant
spaces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93112149A
Other languages
German (de)
English (en)
Other versions
EP0585611A3 (fr
Inventor
Wilhelm KRÄMER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Patent GmbH
Original Assignee
ABB Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP0585611A2 publication Critical patent/EP0585611A2/fr
Publication of EP0585611A3 publication Critical patent/EP0585611A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/08—Cooling, heating or ventilating arrangements
    • H01C1/082—Cooling, heating or ventilating arrangements using forced fluid flow

Definitions

  • the invention relates to a power resistor for liquid cooling according to the preamble of claim 1 and can, for. B. can be used as service water-cooled wiring or braking resistor in an electric rail vehicle with a converter-powered drive.
  • Such a power resistor for liquid cooling is known from DE 39 35 956 A1.
  • An arrangement with a force-cooled, electrical power resistor is proposed there, in which the power loss can be dissipated by means of boiling or liquid cooling.
  • the power resistor has a flat, flat, metallic resistance element with at least two electrical connections.
  • the resistance element is formed from a sheet-metal material with a high specific electrical resistance and pressure-contacted with at least one electrically conductive liquid heat sink via an electrically insulating, but good heat-conducting intermediate layer. For double-sided cooling, the resistance element can be clamped between two liquid heat sinks.
  • the invention has for its object to provide a power resistor for liquid cooling of the type mentioned, which can be assembled universally for different performance classes from the same basic building blocks.
  • the advantages that can be achieved with the invention consist in particular in that a power resistor with a flat cooler for hot water cooling is created, the ohmic resistance value and the power class of which can be varied using any number of identical units in the manner of a modular system.
  • the power density of the compact power resistor is very high, since intensive, large-area cooling of the heat-producing resistance elements is ensured.
  • the power resistor has a flat cooler with only two flat housings, the resistance element being arranged in the intermediate space formed between the two flat housings.
  • the high performance class for example, six or more flat housings are stacked to form a flat cooler, with resistance elements being located in each space between two flat housings.
  • the resistance elements only have to be insulated from the metal, grounded flat housings by means of insulating plates - the insulating plates being thin-walled and only being subjected to pressure and not to tension and high compressive forces are possible - low heat transfer resistances between the heat-producing resistance elements and the coolant - preferably process water with antifreeze - can be achieved, which justifies the high performance, power density and compactness of the power resistance for both relatively small and relatively large outputs.
  • the power resistor is particularly suitable for use in rail vehicles due to its vibration resistance, its low weight and its small space requirement.
  • FIG. 1 shows a section through a power resistor with a flat cooler for hot water cooling. It Several stacked flat housings 1a ... 1f can be seen, a resistance element in the form of one or more meandered resistance sheet metal plates (punched flat ribbon resistor) 3, 4 being arranged in each of the spaces 2a ... 2e formed between two flat housings 1a ... 1f . An insulation plate 5a or 5b is located between each resistance sheet metal plate 3 or 4 and a flat housing 1a ... 1f, while two bifilar resistance sheet metal plates 3, 4 are electrically separated from one another by an insulation plate 6.
  • a resistance element in the form of one or more meandered resistance sheet metal plates (punched flat ribbon resistor) 3, 4 being arranged in each of the spaces 2a ... 2e formed between two flat housings 1a ... 1f .
  • An insulation plate 5a or 5b is located between each resistance sheet metal plate 3 or 4 and a flat housing 1a ... 1f, while two bifilar resistance sheet metal plates 3, 4 are
  • the insulating plates 5a, 5b are relatively thin-walled, on the one hand to ensure the electrical insulation between the flat housings lying at ground potential and the resistance sheet metal plates and on the other hand to enable good heat transfer from the resistance sheet metal plates to the flat housings.
  • Ceramic, mica or PPS plastic for example, is used as the material for the insulating plates 5a, 5b.
  • a thin plastic film is preferably additionally arranged between the insulating plates 5a, 5b and the flat housings.
  • the insulating plate 6 has no heat transfer function, but only an electrical insulating function and consists, for example, of a heat-resistant plastic.
  • Each flat housing 1a ... 1f consists of two mirror-image-shaped pressure plates 7, 8, the pressure plates being connected to one another in a liquid-tight manner on their outer edges, for example by means of a roller seam weld 9.
  • the pressure plates 7, 8 consist, for example, of stainless steel, aluminum or brass plate .
  • Each flat housing 1a... 1f has two coolant collecting spaces 10 and 11 located on opposite sides (transverse channels, see also FIG. 2). These two coolant collecting spaces 10, 11 are connected to one another via a large-area but very narrow flat channel 12 or a plurality of parallel flat channels.
  • each coolant collecting space 10, 11 has at least two additional openings 13, 14, 15, 16, as can be seen in particular from FIG.
  • These openings 13 to 16 serve for the entry and exit and for guiding the cooling liquid within the flat cooler consisting of several stacked flat housings.
  • Those openings 13 to 16 of two adjacent collecting spaces 10, 11, which are located directly opposite each other within the flat cooler and thus form a liquid passage, are sealed via sealing rings 17 to the outside and to the spaces 2a .... 2e.
  • At least one outward opening serves for the inlet of the cooling liquid and is therefore provided with a liquid inlet connection 18.
  • At least one further, outward opening serves to drain the cooling liquid and is therefore provided with a liquid drain connection.
  • the further outwardly directed openings are closed by means of a cover, with hydraulic sealing again using sealing rings 17.
  • a solder seal can also be used instead of the sealing rings 17.
  • the coolant flow runs from the liquid inlet connection 18 into the coolant collecting spaces 10 - the individual coolant collecting spaces 10 being connected to one another via openings 13, 14 - and from there via the flat channels 12 to the coolant collecting spaces 11.
  • the cooling liquid absorbs the thermal energy produced by the resistance sheet metal plates 3, 4 during operation via the relatively large main surfaces of the flat channels 12.
  • the heated cooling liquid flows from the cooling liquid collecting spaces 11 via the openings 15, 16 to the liquid discharge nozzle.
  • the flat channels 12 are preferably much narrower than the space 2a .... 2e between two flat housings 1a .... 1f.
  • a plurality of outwardly directed openings in a coolant collection chamber 10 can be provided with liquid inlet connections 18 and a plurality of outwardly directed openings in a coolant collection chamber 11 can be provided with liquid discharge connections.
  • liquid guide plates 21 within each flat channel 12.
  • These liquid guide plates 21 have guide webs 22, each parallel to the connection between the coolant collecting spaces 10, 11 (transverse channels) run and between which longitudinal channels 23 are formed from one coolant collecting space to the other.
  • liquid guide plates 21 with guide webs 22 and longitudinal channels 23 can be dispensed with, if instead the pressure plates 7, 8 themselves are provided with corresponding impressions through which the longitudinal channels for cooling liquid guidance are created.
  • the individual flat housings 1a ... 1f with the resistance sheet metal plates 3, 4 in the spaces 2a .... 2e can be pressed together by external clamping plates 22, 23, which among other things means that the hydraulic seal between the mutually facing openings and the low thermal resistance between Resistance elements and coolant is ensured.
  • the clamping plates 22, 23 are each adapted to the shape of the flat housing and have z. B. recesses for the liquid inlet connection 18 and the liquid outlet connection or form the connection itself, with a seal against the pressure plates again via sealing rings 17. There is no risk of breakage for the insulating plates and other structural units, even with high pressing forces.
  • the heat transfer from the resistance sheet metal plates to the coolant is advantageously optimized by the pre-pressing forces, since disruptive, heat-insulating air gaps between the layer sequence of resistance sheet metal plate / insulating plate / pressure plate are reliably prevented.
  • screw connections in the peripheral area of the clamping plates 22, 23 can be used as the clamping device.
  • the clamping plates 22, 23 are preferably each cambered, so that in particular in the middle of the flat cooler there is still sufficient clamping force for compressing the layer sequence of flat cooler / insulating plate / resistance plate plate / insulating plate / flat cooler, etc.
  • the liquid guide plates 21 or the above-mentioned impressions advantageously prevent inadmissible compression and thus a narrowing of the cross-section of the flat channels 12.
  • clamping plate variant in the case of a flat cooler variant with a solder seal, instead of the sealing rings 17, it is also possible to completely dispense with the use of clamping plates if, for example, cramped space conditions at the installation location require this.
  • the power resistor with the flat cooler is appropriately encapsulated with an outer encapsulation 24 made of epoxy resin or silicone, additional ribs being able to extend the encapsulation creepage distance.
  • FIG. 2 shows a perspective view of a flat housing with a liquid baffle. It is a recognizable from two pressure plates 7, 8 constructed flat housing, wherein a liquid baffle 21 is inserted between the two pressure plates. Longitudinal channels 23 are created by the guide webs 22 of the liquid guide plate 21, which run from the coolant collection space 10 to the further coolant collection space 11 and thereby divide the flat channel 12 into individual flow paths. Furthermore, the openings 13 to 16 necessary for the transport of coolant can be seen.
  • FIGS. 3 and 4 show views of a high-performance flat cooler constructed from a plurality of flat housings.
  • the spaces 2a ?? 2e suitable for receiving the resistance elements between the flat housings 1a Vietnamese f and the coolant collecting spaces 10, 11 can be seen. Since the spaces 2a ... 2e are open at the side until they are closed by the outer casting 24, the electrical connectivity of the individual resistance sheet metal plates is ensured in a simple manner.
  • FIG. 4 shows the coolant collecting space 10 (transverse channel) which extends over the entire width of the flat housings 1a ... 1f. The outer roller seam welds 9 of the flat housing are indicated in each case.
  • FIG 5 shows the internal electrical connection of the power resistor. It can be seen that the resistance sheet metal plates 3, 4 are connected outside of the rooms 2a... In part by bridges 25. The two outer resistance sheet metal plates form external electrical connections 26. The electrical insulation of the bridges 25 and connections 26 is provided by the outer casting 24.
  • FIG. 6 shows a power resistor with only two flat housings 1a, 1b and an intermediate space 2a formed between the two flat housings.
  • the resistance sheet metal plates 3, 4 are separated from one another by means of an insulating plate 6 and which can be contacted externally via electrical connections 26.
  • the resistance sheet metal plates 3, 4 are in turn electrically insulated from the pressure plates 7, 8 via insulating plates 5a, 5b and additional very thin insulating foils.
  • the coolant collecting spaces 10a, 10b and flat channels 12a, 12b suitable for the coolant transport are shown.
  • Grooves 27 are used to accommodate sealing rings and thus to hydraulically seal the power resistor from an external cooling rail.
  • the outer casting 24 is provided with ribs to extend the creepage distance and insulates the electrical connections 26.
  • FIG. 7 shows the hydraulic connection side of the power resistor of the variant according to FIG. 6.
  • the coolant is supplied via the opening 28 to the coolant collecting space 10a (see also FIGS. 5 and 9), from there via the flat channel 12a to the coolant collecting space 11a (see FIG. 9), from there via the opening 29 via an external channel to the opening 30, from there via a further coolant collecting space and the flat channel 12b to the coolant collecting space 10b and from there to the opening 31, which serves as a liquid drain.
  • FIG. 8 shows the resistance sheet metal plates 3, 4 of the variant according to FIG. 6.
  • the meandering shape, the folding and the external electrical connections 26 can be seen, the aforementioned insulating plates 6 being inserted between the folded resistance sheet metal plates 3, 4.
  • FIG. 9 shows a perspective view of an opened power resistor of the variant according to FIG. 6.
  • the two flat housings 1a, 1b formed from pressure plates 7, 8 can be seen, the pressure plate 7 of the flat housing 1a forming a cover being removed in order to provide an insight into the coolant collecting spaces 10a, 11a and the flat channel 12a. Since the coolant collecting channels 10a, 11a do not lie opposite one another, but rather are arranged side by side, a web 33 is provided for forming the flat channel 12a.
  • the liquid guide plate 21 of the flat channel 12a is provided with a knob-like structure in order to enlarge the surface that is effective in the heat transfer.
  • a groove 32 suitable for inserting a sealing ring serves to hydraulically seal the cover of the flat housing 1a.
  • the external electrical connections 26 of the resistance sheet metal plates located in room 2a can be seen.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
EP19930112149 1992-08-04 1993-07-29 Résistance de puissance pour se froidissement liquide. Withdrawn EP0585611A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4225723 1992-08-04
DE19924225723 DE4225723A1 (de) 1992-08-04 1992-08-04 Leistungswiderstand für Flüssigkeitskühlung

Publications (2)

Publication Number Publication Date
EP0585611A2 true EP0585611A2 (fr) 1994-03-09
EP0585611A3 EP0585611A3 (fr) 1994-11-30

Family

ID=6464799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930112149 Withdrawn EP0585611A3 (fr) 1992-08-04 1993-07-29 Résistance de puissance pour se froidissement liquide.

Country Status (2)

Country Link
EP (1) EP0585611A3 (fr)
DE (1) DE4225723A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872853A1 (fr) * 1997-04-03 1998-10-21 ABB Daimler Benz Transportation Austria GmbH Dispositif de refroidissement pour des résistances de freinage des véhicules, en particulier des véhicules ferroviaires
EP0925993A3 (fr) * 1997-12-11 2000-06-28 Voith Turbo GmbH & Co. KG Résistance électrique de freinage pour des systèmes d'entraínement électriques
CN102117689A (zh) * 2010-05-11 2011-07-06 北京七一八友晟电子有限公司 矩阵等压式绝缘水冷电阻器
DE102010055475A1 (de) 2010-12-22 2012-06-28 Reo Inductive Components Ag Widerstandsanordnung
TWI470652B (zh) * 2010-06-03 2015-01-21 Futaba Electric Co Ltd 薄型電阻及其製造方法
US9117575B2 (en) 2010-12-03 2015-08-25 Vishay Electronic Gmbh Electrical power resistor
WO2022184628A1 (fr) * 2021-03-03 2022-09-09 Heine Resistors Gmbh Résistance de freinage refroidie par liquide sous la forme d'un échangeur de chaleur à plaques

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545447C2 (de) * 1995-12-06 2001-12-13 Daimler Chrysler Ag Bremswiderstand-Kühleinrichtung
DE20311068U1 (de) 2003-07-18 2003-09-25 Türk & Hillinger GmbH, 78532 Tuttlingen Bremswiderstand für Elektromotoren
GB2478547B (en) * 2010-03-09 2014-01-15 Cressall Resistors Ltd Liquid-cooled brake resistor for use in electric vehicles
DE102010064596B3 (de) * 2010-12-22 2015-11-12 Reo Inductive Components Ag Widerstandsanordnung
DE102012103797A1 (de) * 2012-04-30 2013-10-31 KRAH Elektronische Bauelemente GmbH Flüssigkeitsgekühlter Widerstand
CN112086252A (zh) * 2020-09-14 2020-12-15 广东意杰科技有限公司 一种高压超大容量水冷电阻器
DE102023202785A1 (de) * 2023-03-27 2024-10-02 Heine Resistors Gmbh Verbesserter modularer Wärmeübertrager
DE102023202784A1 (de) * 2023-03-27 2024-10-02 Heine Resistors Gmbh Elektrische Kontaktierung in einem kühlbaren Widerstand

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3133485A1 (de) * 1980-09-15 1982-05-06 Peter 2563 Ipsach Herren Fluessigkeitsgekuehlte elektrische baugruppe
DE3933956C2 (de) * 1989-10-11 1994-03-24 Abb Patent Gmbh Spannverband für einen Stromrichter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872853A1 (fr) * 1997-04-03 1998-10-21 ABB Daimler Benz Transportation Austria GmbH Dispositif de refroidissement pour des résistances de freinage des véhicules, en particulier des véhicules ferroviaires
EP0925993A3 (fr) * 1997-12-11 2000-06-28 Voith Turbo GmbH & Co. KG Résistance électrique de freinage pour des systèmes d'entraínement électriques
CN102117689A (zh) * 2010-05-11 2011-07-06 北京七一八友晟电子有限公司 矩阵等压式绝缘水冷电阻器
CN102117689B (zh) * 2010-05-11 2013-07-03 北京七一八友晟电子有限公司 矩阵等压式绝缘水冷电阻器
TWI470652B (zh) * 2010-06-03 2015-01-21 Futaba Electric Co Ltd 薄型電阻及其製造方法
US9117575B2 (en) 2010-12-03 2015-08-25 Vishay Electronic Gmbh Electrical power resistor
DE102010055475A1 (de) 2010-12-22 2012-06-28 Reo Inductive Components Ag Widerstandsanordnung
WO2022184628A1 (fr) * 2021-03-03 2022-09-09 Heine Resistors Gmbh Résistance de freinage refroidie par liquide sous la forme d'un échangeur de chaleur à plaques

Also Published As

Publication number Publication date
DE4225723A1 (de) 1994-02-10
EP0585611A3 (fr) 1994-11-30

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