EP3087570A1 - Resistance and method for the production of said type of resistance - Google Patents
Resistance and method for the production of said type of resistanceInfo
- Publication number
- EP3087570A1 EP3087570A1 EP14818961.6A EP14818961A EP3087570A1 EP 3087570 A1 EP3087570 A1 EP 3087570A1 EP 14818961 A EP14818961 A EP 14818961A EP 3087570 A1 EP3087570 A1 EP 3087570A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- carrier
- resistor according
- end portion
- winding
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title description 3
- 238000004804 winding Methods 0.000 claims abstract description 79
- 238000007599 discharging Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 3
- 238000010618 wire wrap Methods 0.000 claims 1
- 238000005338 heat storage Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008775 paternal effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
- H01C3/18—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding wound on a flat or ribbon base
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/08—Cooling, heating or ventilating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
- H01C3/20—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding wound on cylindrical or prismatic base
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
- H01C1/022—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being openable or separable from the resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
- H01C1/028—Housing; Enclosing; Embedding; Filling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath
Definitions
- the invention relates to a resistor, preferably a braking, discharging or high load resistor according to the preamble of claim 1 and a method for producing such a resistor.
- Braking resistors are used, for example, to reduce excess energy, which can not be used for charging a battery or a capacitor arrangement or the like, in electrical drives in the case of recuperation, by converting these energy or voltage peaks into heat.
- Braking or discharging resistors may be formed with ceramic PTC resistor elements or wire resistance elements. Braking resistors with ceramic PTC resistor elements are described, for example, in EP 1 225 080 B1 of the Applicant. Such braking resistors have a high reliability because of their strong with the temperature increasing resistance characteristic, since they abregein themselves in an overload. The disadvantage is that such PTC braking resistors are relatively expensive. In less demanding applications braking or discharging resistors - also called load resistors - are usually used, in which the resistance element is designed as a wire wound winding, which surrounds an insulating body. Cartridge-shaped embodiments of such wire resistance elements are disclosed, for example, in DE 2 228 460 or DE 37 03 689 C2.
- the known braking resistor has the heat sink made of aluminum as a heat sink, in which the wire resistance element is used. Its positional positioning is done by micanite insulating plates, which hold the heating element at a distance from the peripheral wall of the extruded profile. Mikanit is the
- micanite plates are used, which prevent a direct contacting of the wire resistor element with the heat sink and thus ensure the electrical insulation.
- a closure is applied and cured on this backfilling.
- thermosetting layer next to the filling instead of the thermosetting layer next to the filling insert a small plate in the heat sink, which is sealed by a sealant. Adjacent to the plate is then used, for example, a metallic or ceramic closure plate in the heat sink, which is mechanically connected thereto.
- a metallic or ceramic closure plate in the heat sink which is mechanically connected thereto.
- EP 1 852 878 B1 discloses a solution in which the wire resistance winding is pressed together with the carrier and the insulating plates arranged between the circumferential walls of the heat sink and the wire resistance winding, so that filling can be dispensed with.
- the wire winding is usually wound around the two longitudinal legs of a multi-part frame-shaped micanite carrier, this winding extending from a connection side narrow side, then extending along a longitudinal leg of the frame, in the region of another narrow side then to the other, parallel legs goes over and leads from there back to the connection side narrow side.
- the manufacturing cost of the multi-part carrier and the double-winding is significant.
- the present invention seeks to provide a resistor in which with little device technology effort the
- the invention has for its object to provide a method for producing such a resistor. This task is characterized by a resistance with the characteristics of
- the resistor which may be designed as a braking, discharging or high-load resistor, hereinafter referred to simply as a braking resistor, is designed with a wire winding element having a wound around an insulating support wire wound winding whose ends are associated with connecting elements.
- a predetermined wire section of the wire winding is better thermally insulated from the environment in comparison to the other wire winding, so that in the event of a fault the wire winding element fails in this wire section.
- Intrinsic safety is defined by the following characteristics for a wire braking resistor:
- Braking resistor but also the motor on which the system is bolted electrically conductive is energized.
- this wire section is at least partially surrounded by the carrier or embedded in this.
- the structure of the braking resistor is particularly simple if the carrier has two carrier elements, between which the wire section extends, while the remaining wire winding extends around the two carrier elements.
- the wire winding extends away from a connection-side end section of the support toward another end section and is then returned between the support elements to the connection-side end section and is then connected there to a connection element. That In this variant, the wire passage extends between the two support elements.
- Arcing in the deflection region can be prevented as far as possible when the winding is deflected at a distance from the other end portion of the carrier in the direction of the connection-side end portion. This can be effected relatively easily, in which this deflection takes place along a recess formed in the other end section of the carrier.
- the support is made of an electrically and thermally insulating material such as micanite or the like.
- the wire resistor is formed as a flat wire.
- the distance of the wire turns should be more than 1, 5 mm in one embodiment.
- round wire can be used, in this case, the distance is less, for example, 0.25 mm. The distances depend on the required total resistance of the system.
- a round wire is preferably used in thicknesses between 0.1 mm to 0.45 mm. With such diameters, relatively large resistance values can be realized. If a smaller resistance is required, flat wire is preferred.
- the mounting of the braking resistor is particularly easy if the carrier has recesses on the connection-side end section, in which the end sections of the winding can be prefixed.
- the braking resistor is preferably formed with a heat sink, which has a receiving space, which accommodates the wire winding element, wherein the connecting lines extend through an end closure of the heat sink.
- the electrical insulation with respect to the heat sink is particularly effective when the wire resistance element is embedded in a filling and further insulation elements are arranged between the filling and heat sink.
- the wire resistance is first passed from the connection side between the two parts of the carrier and deflected at the opposite end portion of the carrier.
- the carrier is then wrapped with the resistance wire, the winding direction extending to the terminal-side end portion of the carrier.
- the wire winding element can also be pressed with the heat sink, wherein between the wire winding element and the heat sink electrically insulating plates are provided as insulation body. In such a variant can be dispensed with the described filling.
- the wire winding element can be surrounded with an electrically insulating material that forms a heat storage and heat transfer element.
- the cured block can then be inserted into the receiving space of the heat sink. In principle, it is also possible to shed the wire winding element directly in the heat sink.
- FIG. 1 shows a three-dimensional illustration of a braking resistor according to the invention
- Figure 2 shows the braking resistor of Figure 1 with the top surface removed
- Figure 3 is a view of a wire winding element of the braking resistor according to Figures 1 and 2;
- Figure 4 is a diagrammatically broken view of the wire winding element according to Figure 3;
- Figure 5 is a detail view of the wire winding of the wire winding element according to Figures 3 and 4 and
- Figure 6 is a sectional view of a variant of a braking resistor.
- FIG. 1 shows a three-dimensional representation of a device according to the invention
- Braking resistor 1 The invention will be explained with reference to a resistor (braking, discharging or high load resistance). In principle, however, the inventive concept can also be used as a heating resistor in a heater. Accordingly, this has a designed as an aluminum extruded section heat sink 2, in which in the following explained in more detail receiving space (see Figure 2), a wire winding element is added. The contacting of this wire winding element via two connecting lines 4, 6, which pass through a connection-side closure 8. The heat sink 2 serves as a heat storage, which absorbs the heat generated at the wire winding element. The heated heat sink is then in heat exchange with the environment.
- the heat sink is designed with the heat exchange surface increasing cooling fins 10 and has recesses 12 in the corner regions, which allow attachment of the heat sink 2 to a housing or the like.
- a bottom-side closure is formed, as will be explained in more detail below.
- the cooling fins 10 are formed only in an upper cover wall, referred to below as a cover surface 14; of course, these can also be formed in the cover surface 16 lying below.
- cover surface 14 a cover surface 14
- These top surfaces protrude laterally from the main body of the heat sink 2, so that side walls 18, 20 are formed approximately as a U-profile. In this U-profile additional elements, such. Temperature sensor or limiter are mounted. Other geometries are possible.
- FIG. 2 shows the braking resistor according to FIG. 1 with the top surface 14 removed, so that the addressed wire winding element 22 is visible.
- the illustrated layer structure of this braking resistor 1 is known in principle from the aforementioned prior art according to DE 10 201 1 001 362 A1, so that only the elements essential for understanding the invention are described here.
- the wire winding element 22 is inserted into a receiving space 24 of the heat sink 2.
- This receiving space 24 is through the two U-shaped side walls 18, 20, the two top walls or top surfaces 14, 16 (top surface 14 in the illustration 2 removed), the connection-side closure 8 and the mentioned further bottom-side closure 26 limited.
- the two plate-shaped closures 8, 26 may for example consist of metal, ceramic or glass and are preferably caulked to the heat sink 2.
- a micanite plate 28 is arranged, which is fixed in position by means of a potting compound or the like, not shown. It is also possible to press in the micanite plate 28. This plate 28 abuts two longitudinal micanite insulating panels 30, 32 which extend to two terminal-side plates 34, 36. These are in turn arranged at a distance from the closure 8 and held by means of a sealant. As explained in DE 10 201 1 001 362 A1, these two plates 34, 36 have mutually formed recesses which, in the assembled state, complement one another for feedthroughs for the two connection lines 4, 6, these feedthroughs encompassing the circumference of the lines. Corresponding bushings 37a, 37b are also formed in the closure 8.
- At least one micanite base plates are provided per side, between which the wire winding element 22 is then arranged. Accordingly, these two micanite base plates, the longitudinally arranged insulating plates 30, 32 and the front side arranged platelets 28, 34, 36 form a closed insulating body, which surrounds the wire winding element 22 box-shaped.
- the receiving space 24 is filled with a sand filling, which is partially solidified by shaking, so that the wire winding element 22 is reliably positioned in the receiving space 24 and also effectively thermally coupled to the heat sink. In this case, the wire is positioned position.
- FIGS. 3 to 5 show an individual view of the wire winding element 22 according to FIG. 2.
- the wire winding element 22 has a support 38 made of micanite, which according to the broken view in FIG consists of two micanite carrier elements 40, 42, of which in the illustration according to FIG. element 42 is visible. This covers the top in FIG. 4 support element 40th
- the two substantially congruent support elements 40, 42 have a connection-side end portion 44 and an end portion 46 remote therefrom, which are widened on both sides relative to a winding portion 48 arranged therebetween.
- connection-side end portion 44 two connection regions 50, 52 are provided, which are each formed by a welding bridge, to which the two connection lines 4, 6 are dotted or connected in some other way.
- the carrier 38 carries the actual wire winding.
- the resistance wire 54 used here is in the illustrated embodiment as a flat wire with a rectangular
- Winding distance W is preferably more than 0.5 mm.
- the wire diameters are usually in the range between 0.1 mm to 0.45 mm.
- the end 56 of the wire 54 lying at the bottom in FIG. 3 and lying at the top in FIG. 4 can be contacted with the connection region 52 of the connection line 4.
- the wire 54 is then guided between the two carrier elements 42, 44 through to a recess 58 formed at the other end portion 46 of the carrier 38 and deflected there.
- This deflection region of the wire is provided with the reference numeral 60 in FIG. From this deflection region 60, the wire 54 is then guided to the adjacent region of the winding section 48 and then the carrier 38 is wrapped until the wire 54 again reaches the connection-side end section 44.
- the corresponding end 62 of the wire is then contacted with the connection region 50 and thus with the connection line 6.
- a prefixing of the wire winding is possible in that the respective ends 56, 62 are clamped in two recesses 64, 66, so that then after the assembly, the contacting with the connecting lines 4, 6 can be done.
- the wire section 68 passed through between the two carrier elements 40, 42 is opposite the outer winding by the two plate-shaped micanitis Carrier elements 40, 42 thermally insulated.
- the wire section 68 lying between the carrier elements 40, 42 will heat significantly more than the outer, cooled by the heat sink 2 winding, so that accordingly also the burn-through in the region of this passage.
- the burn-through takes place in such a way that immediately forms an interruption point, which is so far that a forming arc is quickly interrupted. This makes the element intrinsically safe, in particular, a physical connection (electrical connection to the housing) is impossible.
- FIG. 5 shows an individual view of the wound wire 54.
- the wire section 68 extending between the two support elements 40 and 42 is visible, which extends through the interior of the winding and is contacted at its end 56 to the connection 52.
- This somewhat obliquely to the winding axis extending wire portion 68 is deflected in the region of the deflection 60; the actual winding then extends back again, to the right in FIG. 5, and ends in the somewhat inclined end 62, which can be contacted with the further connection 50.
- FIG. 6 shows a filler, such as MgO, to position the wire winding element 22 in the receiving space 24.
- a filler such as MgO
- EP 1 852 878 B1 are pressed together.
- the illustrated side walls 74, 76 are retracted in the manner shown inwardly, so that the wire winding element 22 with the associated
- Insulating body is reliably positioned position. In this compression, the
- Wire winding element 22 according to the invention with a heat storage
- wire winding element 22 is potted with a hardening material, which may for example consist of a mixture of MgO and water glass and under a protective gas atmosphere and
- This electrically insulating potting material surrounds the wire winding element 22, so that it can be inserted as a "block" into the receiving space 24 of the heat sink 2.
- the attachment can be effected, for example, by pressing or pressing in. In principle, this is also possible
- a resistor preferably a brake, discharge or
- High load resistor and a method for producing such a resistor in which a wire section of a wire winding is thermally insulated from the other wire winding, so that fails in the case of failure of the wire section.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Details Of Resistors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013114870 | 2013-12-24 | ||
DE102014102601.2A DE102014102601A1 (en) | 2013-12-24 | 2014-02-27 | Resistor and method of making such a resistor |
PCT/EP2014/078378 WO2015097050A1 (en) | 2013-12-24 | 2014-12-18 | Resistance and method for the production of said type of resistance |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3087570A1 true EP3087570A1 (en) | 2016-11-02 |
EP3087570B1 EP3087570B1 (en) | 2019-12-18 |
Family
ID=53275400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14818961.6A Active EP3087570B1 (en) | 2013-12-24 | 2014-12-18 | Resistor and method for the production of said type of resistor |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3087570B1 (en) |
DE (2) | DE102014102601A1 (en) |
DK (1) | DK3087570T3 (en) |
WO (1) | WO2015097050A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105304240A (en) * | 2015-10-23 | 2016-02-03 | 安徽来福电子科技有限公司 | Resistor special for medium-voltage frequency converter |
EP3387657A1 (en) | 2015-12-09 | 2018-10-17 | DBK David + Baader GmbH | Discharge resistor |
DE102016125124A1 (en) | 2016-12-21 | 2018-06-21 | Dbk David + Baader Gmbh | discharge |
DE202018101634U1 (en) | 2018-03-23 | 2018-04-03 | Türk & Hillinger GmbH | Device for converting electrical energy into heat and electrical heating device with such a device |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2178548A (en) * | 1936-01-17 | 1939-11-07 | Bell Telephone Labor Inc | Resistor |
DE2228460A1 (en) | 1972-06-10 | 1973-12-20 | Crl Electronic Bauelemente | LOW RESISTANCE |
DE7809564U1 (en) * | 1978-03-31 | 1978-08-17 | Deutsche Vitrohm Gmbh & Co Kg, 2080 Pinneberg | HIGH LOAD WIRE RESISTANCE |
DE3703689A1 (en) | 1987-02-06 | 1988-08-18 | Magnet Motor Gmbh | Electrical resistance unit for use in a fire damp protection region |
DE20101106U1 (en) | 2001-01-22 | 2001-04-05 | David + Baader - DBK - GmbH, 76870 Kandel | Protection element in an electrical circuit |
DE20311068U1 (en) * | 2003-07-18 | 2003-09-25 | Türk & Hillinger GmbH, 78532 Tuttlingen | Braking resistance for electrical motors is in form of coil winding on a former set within a heat dissipating block of metal |
EP1711035A1 (en) | 2005-04-08 | 2006-10-11 | DBK David + Baader GmbH | Electric brake resistance and method for producing the same |
EP1852878B2 (en) | 2007-04-02 | 2016-06-01 | DBK David + Baader GmbH | Power resistor module |
DE102011001362A1 (en) | 2010-08-11 | 2012-02-16 | Dbk David + Baader Gmbh | braking resistor |
-
2014
- 2014-02-27 DE DE102014102601.2A patent/DE102014102601A1/en not_active Ceased
- 2014-02-27 DE DE202014010469.7U patent/DE202014010469U1/en not_active Expired - Lifetime
- 2014-12-18 EP EP14818961.6A patent/EP3087570B1/en active Active
- 2014-12-18 WO PCT/EP2014/078378 patent/WO2015097050A1/en active Application Filing
- 2014-12-18 DK DK14818961.6T patent/DK3087570T3/en active
Also Published As
Publication number | Publication date |
---|---|
DK3087570T3 (en) | 2020-03-23 |
EP3087570B1 (en) | 2019-12-18 |
WO2015097050A1 (en) | 2015-07-02 |
DE102014102601A1 (en) | 2015-06-25 |
DE202014010469U1 (en) | 2015-08-26 |
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