EP4374395A1 - Widerstand, insbesondere dickschichtwiderstand - Google Patents
Widerstand, insbesondere dickschichtwiderstandInfo
- Publication number
- EP4374395A1 EP4374395A1 EP22754815.3A EP22754815A EP4374395A1 EP 4374395 A1 EP4374395 A1 EP 4374395A1 EP 22754815 A EP22754815 A EP 22754815A EP 4374395 A1 EP4374395 A1 EP 4374395A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- resistor
- resistance element
- voltage system
- resistance
- ppm
- 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 7
- 229910052707 ruthenium Inorganic materials 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000011195 cermet Substances 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 239000010949 copper Substances 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 6
- 239000011575 calcium Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OPFJDXRVMFKJJO-ZHHKINOHSA-N N-{[3-(2-benzamido-4-methyl-1,3-thiazol-5-yl)-pyrazol-5-yl]carbonyl}-G-dR-G-dD-dD-dD-NH2 Chemical compound S1C(C=2NN=C(C=2)C(=O)NCC(=O)N[C@H](CCCN=C(N)N)C(=O)NCC(=O)N[C@H](CC(O)=O)C(=O)N[C@H](CC(O)=O)C(=O)N[C@H](CC(O)=O)C(N)=O)=C(C)N=C1NC(=O)C1=CC=CC=C1 OPFJDXRVMFKJJO-ZHHKINOHSA-N 0.000 description 1
- 229910020333 Pb2Ru2O6.5 Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229940126086 compound 21 Drugs 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000003304 ruthenium compounds Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/003—Thick film resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
- H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
- H01C17/06506—Precursor compositions therefor, e.g. pastes, inks, glass frits
- H01C17/06513—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component
- H01C17/06533—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component composed of oxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/06—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material including means to minimise changes in resistance with changes in temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
- H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances
- H01C7/023—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances containing oxides or oxidic compounds, e.g. ferrites
Definitions
- Resistor especially thick film resistor
- the invention relates to a resistor, in particular a thick-film resistor, in particular for a high-voltage system in a motor vehicle, with a nominal power of at least 10 watts, with at least two electrical resistance connections, with a ceramic substrate and with a resistance element electrically provided between the two resistance connections and consisting of a Ceramic substrate applied thick film material, wherein the resistance element has a temperature coefficient.
- a load circuit of a high-voltage system of a motor vehicle must be discharged quickly when a high-voltage battery of the high-voltage system is disconnected from the load circuit (cf. EP2561372B1).
- a high-voltage system has a discharge circuit with a resistor or discharge resistor.
- resistors with a resistance element made of a thick-film material take on a high rated power of at least 10 watts at a low temperature coefficient in the standard range of ⁇ 100 ppm/K.
- the invention has therefore set itself the task of changing a resistor of the type described in such a way that this despite a high rated power Simplification of circuitry effort can contribute to monitoring.
- the resistance according to the invention can also be used for measuring data acquisition, for example temperature measurement.
- the specified temperature coefficient > 700 ppm/K makes it possible to acquire sufficiently precise measurement data, for example with reference to the discharge, which means that a circuit or a high-voltage system can also be reliably monitored. This is all the better if the temperature coefficient is >1000 ppm/K, for example >1000 ppm/K. Elaborate additional circuitry measures to monitor the discharge of the load circuit are therefore no longer necessary - which means that the design of the discharge circuit can be significantly simplified.
- the temperature coefficient at the resistor according to the invention which is higher than that of known discharge resistors, is only of secondary importance in the event of a discharge, because the discharge from the discharge circuit is usually limited to the rated power of the resistor (power that the resistor can absorb in continuous operation without damage). is limited and / or kept constant, for example using a PWM-controlled discharge.
- the resistor has a power rating of at least 10, 25, 50, 100, 15, 250, 350, 500, 600, 800, 1000, 2000, 2500 or 5000 watts.
- the resistor preferably has a rated power of at most 2500, in particular at most 600 watts.
- the nominal resistance is in the range from 25 to 2500 watts, in particular from 25 to 600 watts.
- the resistor can have the rated power, for example, at a temperature of 85 °C or 125 °C at its resistor body.
- the resistance can be distinguished if it has a nominal voltage of > 30 volts.
- the nominal voltage can also be >60 volts or >300 volts.
- the resistor can therefore be particularly suitable as a discharge resistor in high-voltage vehicles.
- the resistor can have a nominal resistance in the range from 1 to 10,000 ohms.
- the ratio of mass percent Ru to mass percent Bi (i.e. - ) in the electrically conductive material is preferably in the range
- composition of the resistance element can still contain unavoidable impurities caused by production, for example a maximum of 0.05 m% individually and a maximum of 0.15 m% overall.
- the ceramic substrate is preferably Al2O3 or AlN or S13N4.
- the thick film material can be cermet or made from a Ru-based resistor paste.
- the resistor according to the invention is preferably used in a discharge circuit of a high-voltage system with a high-voltage battery.
- a high-voltage system with a high-voltage battery for example, a 400-volt high-voltage system or an 800-volt high-voltage system of a motor vehicle is conceivable.
- the high-voltage system has a measuring device that includes the resistance element of the resistor as a temperature-dependent resistor as the measured variable pick-up, the outlay on circuitry in the discharge circuit for monitoring the discharge can be further reduced.
- the above can be further improved if the measuring device is connected to the measured variable pick-up via the resistance terminals of the resistor.
- the high-voltage system with the resistor according to the invention is preferably used in a motor vehicle.
- the resistor according to the invention not only stands out as a load resistor, but also as a measured variable pick-up. This is particularly the case when such a resistor according to the invention is used in a discharge circuit of a high-voltage system of a motor vehicle—in order to contribute to a comparatively high level of structural simplification.
- the resistance can be used as a load resistance, for example Discharge and/or for current limitation and/or as a measured variable pickup, for example for temperature measurement and/or for status monitoring, for example of the high-voltage system or the resistance.
- FIG. 2 is an enlarged view of the internal structure of a resistance element of the resistor of FIGS. 1 and 2.
- FIG. 3 shows a schematic circuit for a high-voltage system with the resistor according to FIG.
- a resistor used as a discharge resistor 1 is shown for a high-voltage system 2 of a motor vehicle shown in FIG. 3.
- the resistor 1 has a rated power of at least 10 watts, which rated power the resistor 1 can absorb in continuous operation without damage.
- the resistor 1 has this nominal power of at least 10 watts at 85° C. at its resistor body 20, namely at its bottom (“bottom case”).
- the electrical resistance of the resistor 1 results essentially from its resistance element 3 made from a thick-film material 4 (or often also called thick-film paste or thick-film paste) from a Ru-based resistance paste, which thick-film material is applied to an Al2O3 ceramic substrate 5 and sintered onto - as can be seen in detail in FIG.
- the resistance element 3 can absorb the rated power.
- the conductive phases 9 of the resistance element 3 are embedded in a glass matrix which has been melted and solidified like the glass matrix and has a composition tailored to the conductive phase.
- cermet metal-ceramic composite material
- Metal contacts 6a, 6b are provided on the resistance element 3, on which T-shaped or L-shaped contact elements 7a, 7b (not shown) are placed and soldered.
- the contact elements 7a, 7b form the resistance terminals 8a, 8b of the resistor 1 on the resistor body 20.
- FIG. The resistance element 3 is thus electrically located between these resistance connections 8a, 8b of the resistor 1.
- the resistance element 3 is provided in the, for example, metallic, resistor body 20, for example encapsulated with the aid of casting compound 21.
- the resistor connections 8a, 8b are located on the outside of the resistor body 20.
- the resistance element 3 has a comparatively high temperature coefficient (TCR) >700 ppm/K at a reference temperature of 25° C., measured according to the standard DIN EN 60115-1.
- the resistor 1 can thus be used for temperature measurement because this resistor has a sufficiently high change in resistance as a function of its temperature.
- the temperature coefficient (TCR) can be >1000 ppm/K, for example also in the range from 1000 to 2500 ppm/K, preferably in the range from 1500 to 2000 ppm/K.
- the resistance element 3 has a positive temperature coefficient (TCR) of 1800 ppm/K (10 6 /Kelvin), e.g. B. measured according to the standard DIN EN 60115-1.
- compositions can also contain Ca (calcium) and/or Al (aluminum) and/or Cu (copper).
- the composition of the resistance element 3 also has Cu in the range from 0.3 to 10 m% and unavoidable manufacturing-related contaminations individually at most 0.05 m% and at most 0.15 m% in total.
- the high-voltage system 2 has a measuring device A, which includes the resistance element 3 of the resistor 1 as a temperature-dependent resistor as a measured variable pick-up (or measuring sensor of a sensor).
- the measuring device A is connected in a simple way in terms of circuitry via the resistance connections 8a, 8b of the resistor 1 to the measured variable pick-up.
- the temperature of the resistor 1 can be calculated via the known non-linear temperature coefficient TCR of the resistor 1, which ensures reliable monitoring of the discharge of the load circuit 13.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Non-Adjustable Resistors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21186518 | 2021-07-19 | ||
PCT/EP2022/070269 WO2023001856A1 (de) | 2021-07-19 | 2022-07-19 | Widerstand, insbesondere dickschichtwiderstand |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4374395A1 true EP4374395A1 (de) | 2024-05-29 |
Family
ID=76971795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22754815.3A Pending EP4374395A1 (de) | 2021-07-19 | 2022-07-19 | Widerstand, insbesondere dickschichtwiderstand |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4374395A1 (de) |
WO (1) | WO2023001856A1 (de) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003073442A1 (fr) * | 2002-02-28 | 2003-09-04 | Kojima Chemical Co., Ltd. | Resisteur |
DE102010015312A1 (de) | 2010-04-17 | 2011-10-20 | Audi Ag | Hochvoltsystem für ein Kraftfahrzeug und Verfahren zur Diagnose eines Hochvoltsystems für ein Kraftfahrzeug |
US10037837B2 (en) * | 2014-01-08 | 2018-07-31 | Mitsubishi Materials Corporation | Resistor and method for manufacturing resistor |
EP3404675A1 (de) * | 2017-05-15 | 2018-11-21 | EBG Elektronische Bauelemente GmbH | Leistungswiderstand |
-
2022
- 2022-07-19 EP EP22754815.3A patent/EP4374395A1/de active Pending
- 2022-07-19 WO PCT/EP2022/070269 patent/WO2023001856A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2023001856A1 (de) | 2023-01-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20240119 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: MIBA RESISTORS AUSTRIA GMBH |