EP3278406A1 - Use of a carbon composite for manufacturing electrical contact elements for a fuel pump, and contact element - Google Patents
Use of a carbon composite for manufacturing electrical contact elements for a fuel pump, and contact elementInfo
- Publication number
- EP3278406A1 EP3278406A1 EP16716169.4A EP16716169A EP3278406A1 EP 3278406 A1 EP3278406 A1 EP 3278406A1 EP 16716169 A EP16716169 A EP 16716169A EP 3278406 A1 EP3278406 A1 EP 3278406A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carbon composite
- composite material
- carbon
- metal content
- total mass
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/12—Manufacture of brushes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/046—Carbon nanorods, nanowires, nanoplatelets or nanofibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/04—Commutators
- H01R39/045—Commutators the commutators being made of carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/06—Manufacture of commutators
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
Definitions
- the present invention relates to the use of a carbon composite material for producing electrical contact bodies of a fuel pump operated in a fuel environment, the carbon composite material having, in addition to the carbon, a thermosetting or thermoplastic binder and a metal content greater than 0.5% and less than 25 % of the total mass of the carbon composite material.
- EP 1 713 148 A1 discloses a process for the production of carbon brushes, in which a pulverulent mixture of a carbon powder and a thermoplastic binder Metal powder is added and the powder mixture is processed in a compression molding process to form a carbon body.
- metal powders are added to the carbon in order to reduce the material resistance of the carbon brush and the contact resistance between the carbon brush and the commutator in the region of low stresses.
- the addition of a metal powder is recommended in a proportion of 30 to 60 wt -.%.
- brushless fuel pumps Because of their operation in a fuel environment, brushless fuel pumps have special operating conditions for the carbon brushes and commutator segments cooperating with the carbon brushes, which are not comparable to operating conditions outside the fuel environment. In particular, it has been found that in this fuel environment, temporary overvoltages exceeding 14V can significantly shorten the life of the brush-commutator systems as brush and commutator wear increases significantly due to overvoltages.
- the object of the present invention is therefore to reduce the wear of a brush-commutator system of a fuel pump operated in a fuel environment.
- This object is achieved by the use of a carbon composite material for the production of carbon contact bodies designed as electrical contact bodies having the features of claim 1.
- a carbon composite material for the production of carbon contact bodies designed as electrical contact bodies having the features of claim 1.
- a carbon composite as a solution to the above problem has been found, which in addition to the carbon and a thermosetting or thermoplastic binder has a metal content that is greater than 0.5% and less than 25% of the total mass of the carbon composite material.
- the inventive use of the carbon composite material proves to be particularly advantageous if the fuel pump is connected to an automotive on-board network with a mains voltage of 12 V.
- the metal content When the metal content is added to the carbon composite material in powder form, a particularly homogeneous distribution of the metal content in the carbon composite material can be achieved. It is particularly advantageous if the metal component predominantly has metal particles with a particle diameter of up to 1 mm, wherein particularly when 80% or particularly preferably 95% of the metal particles have a particle diameter of up to 1 mm, a particularly uniform wear can be achieved.
- the metal content comprises at least one metal of the metals comprising aluminum, zinc and silver metals.
- the metal content of aluminum or an aluminum alloy it is particularly advantageous if the metal content is greater than 0.5% and less than 20% of the total mass of the carbon composite material.
- the metal content of aluminum or an aluminum alloy is at most 10% of the total mass of the carbon composite material.
- the metal content of zinc or a zinc alloy it is particularly advantageous if the metal content is greater than 0.5% and less than 20% of the total mass of the carbon composite material.
- the metal content of zinc or a zinc alloy is at most 10% of the total mass of the carbon composite material.
- the metal content is greater than 0.5% and less than 15% of the total mass of the carbon composite material.
- the metal content of silver or a silver alloy is not more than 10% of the total mass of the carbon composite material.
- the metal part comprises several metals
- the metal part can be added as an alloy or as a mixture to the carbon material.
- the present task is also solved by the use of a contact body for forming an electrical contact on a fuel pump, wherein the contact body is formed as a carbon molded body of a carbon composite material, according to one or more of claims 1 to 16.
- the contact body used according to the invention is preferably designed as a carbon brush or as a commutator segment of a commutator.
- the fuel pump according to the invention has at least one carbon brush or a commutator segment, which is made of a carbon composite material according to one or more of claims 1 to 16.
- the material used to make a carbon brush includes:
- the material used for producing a carbon brush based on the total mass of the carbon composite material, comprises:
- thermosetting binder 7% thermosetting binder
- the material used for producing a carbon brush based on the total mass of the carbon composite material, comprises:
- the material used for producing a carbon brush, relative to the total mass of the carbon composite material comprises:
- thermosetting binder 7% thermosetting binder
- the material used for producing a commutator segment contains, based on the total mass of the carbon composite material: 10% thermoplastic binder,
- the material used to make a commutator segment based on the total mass of the carbon composite material includes:
- thermosetting binder - 10% thermosetting binder
- the material used to make a commutator segment based on the total mass of the carbon composite material comprises: 10% thermoplastic binder,
- the material used to make a commutator segment based on the total mass of the carbon composite material includes:
- thermosetting binder - 1 1% thermosetting binder
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Nanotechnology (AREA)
- Materials Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015205735.6A DE102015205735A1 (en) | 2015-03-30 | 2015-03-30 | Use of a carbon composite material for producing electrical contact bodies for a fuel pump and contact body |
PCT/EP2016/056271 WO2016156112A1 (en) | 2015-03-30 | 2016-03-22 | Use of a carbon composite for manufacturing electrical contact elements for a fuel pump, and contact element |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3278406A1 true EP3278406A1 (en) | 2018-02-07 |
Family
ID=55752250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16716169.4A Withdrawn EP3278406A1 (en) | 2015-03-30 | 2016-03-22 | Use of a carbon composite for manufacturing electrical contact elements for a fuel pump, and contact element |
Country Status (8)
Country | Link |
---|---|
US (1) | US20180062338A1 (en) |
EP (1) | EP3278406A1 (en) |
JP (1) | JP2018518009A (en) |
CN (1) | CN107431323A (en) |
BR (1) | BR112017020766A2 (en) |
DE (1) | DE102015205735A1 (en) |
MX (1) | MX2017012169A (en) |
WO (1) | WO2016156112A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109119855B (en) * | 2018-09-05 | 2020-10-30 | 浙江长城换向器有限公司 | Commutator and production method thereof |
US11670901B2 (en) * | 2018-10-22 | 2023-06-06 | Denso Corporation | Electrical contact device and rotating electric machine including the electrical contact device |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB567579A (en) * | 1942-04-04 | 1945-02-21 | Carter Carburetor Corp | Improvements in or relating to brushes for electric motors |
DE2510874A1 (en) * | 1975-03-13 | 1976-09-30 | Rau Swf Autozubehoer | Carbon brushes for electric motors running in fluids - contg solid lubricant in the compsn |
US4220884A (en) * | 1978-05-01 | 1980-09-02 | Trw Inc. | Carbon brush for motors and method of making the same |
ATE120585T1 (en) * | 1985-08-27 | 1995-04-15 | Intercal Co | ELECTRICAL CONTACT WITH GRAPHITE CONTAINING DEPOSITS. |
JPH05190249A (en) * | 1992-01-17 | 1993-07-30 | Hitachi Chem Co Ltd | Manufacture of carbon brush |
US5912523A (en) * | 1997-10-03 | 1999-06-15 | Mccord Winn Textron Inc. | Carbon commutator |
CN1141763C (en) * | 2000-11-28 | 2004-03-10 | 上海交通大学 | Slide contact electric element having adhesive agent and making technology thereof |
JP4596404B2 (en) * | 2001-06-05 | 2010-12-08 | 株式会社デンソー | Current-carrying member of direct current motor for fuel pump, manufacturing method thereof, and fuel pump |
JP3872383B2 (en) * | 2002-06-06 | 2007-01-24 | 東炭化工株式会社 | Carbon brush |
GB2389358B (en) * | 2002-06-06 | 2007-01-17 | Totankako Co Ltd | Carbon brush |
JP2004124224A (en) * | 2002-10-07 | 2004-04-22 | Totan Kako Kk | Carbon brush |
DE10317594A1 (en) * | 2003-04-16 | 2004-10-28 | Siemens Ag | Fuel pump with electric motor, e.g. for motor vehicle, has several segments of commutator covered by one carbon brush in each rotary position of commutator |
KR101011999B1 (en) * | 2003-09-04 | 2011-01-31 | 도탄카코 가부시키가이샤 | Carbon brush for electrical machine |
DE502005001969D1 (en) | 2005-04-12 | 2007-12-27 | Schunk Kohlenstofftechnik Gmbh | Process for the production of carbon brushes and carbon brushes produced by this process |
CN101297462B (en) * | 2005-11-10 | 2012-07-25 | 株式会社美姿把 | Carbon brush of motor and method for producing the same |
US7799430B2 (en) * | 2006-03-06 | 2010-09-21 | Mitsuba Corporation | Carbon commutator and process for producing the same |
JP2007300748A (en) * | 2006-05-01 | 2007-11-15 | Toraisu Kk | Carbon brush, carbon commutator and fuel injection pump |
JP5118380B2 (en) * | 2007-04-06 | 2013-01-16 | 東炭化工株式会社 | Carbon commutator and carbon brush for fuel pump, and fuel pump incorporating these carbon commutator and carbon brush |
JP2009027791A (en) * | 2007-07-18 | 2009-02-05 | Mitsuba Corp | Carbon commutator |
DE102008059478B4 (en) * | 2008-11-28 | 2015-07-30 | Schunk Kohlenstofftechnik Gmbh | Carbon brush for the transmission of high currents |
ES2362707T3 (en) * | 2009-06-25 | 2011-07-12 | Schunk Kohlenstofftechnik Gmbh | CARBON BRUSH. |
FR2972082B1 (en) * | 2011-02-28 | 2013-03-29 | Mersen France Amiens Sas | CONTACT BROOM |
EP2863523B1 (en) * | 2012-06-18 | 2018-12-12 | Toyo Tanso Co., Ltd. | Metal-carbonaceous brush and method for producing same |
-
2015
- 2015-03-30 DE DE102015205735.6A patent/DE102015205735A1/en not_active Withdrawn
-
2016
- 2016-03-22 JP JP2017551332A patent/JP2018518009A/en active Pending
- 2016-03-22 CN CN201680015539.1A patent/CN107431323A/en active Pending
- 2016-03-22 MX MX2017012169A patent/MX2017012169A/en unknown
- 2016-03-22 BR BR112017020766A patent/BR112017020766A2/en not_active Application Discontinuation
- 2016-03-22 US US15/562,201 patent/US20180062338A1/en not_active Abandoned
- 2016-03-22 WO PCT/EP2016/056271 patent/WO2016156112A1/en active Application Filing
- 2016-03-22 EP EP16716169.4A patent/EP3278406A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
MX2017012169A (en) | 2018-02-09 |
US20180062338A1 (en) | 2018-03-01 |
CN107431323A (en) | 2017-12-01 |
BR112017020766A2 (en) | 2018-06-26 |
JP2018518009A (en) | 2018-07-05 |
DE102015205735A1 (en) | 2016-10-06 |
WO2016156112A1 (en) | 2016-10-06 |
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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: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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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 |
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17P | Request for examination filed |
Effective date: 20171020 |
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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 |
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AX | Request for extension of the european patent |
Extension state: BA ME |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SCHUNK CARBON TECHNOLOGY GMBH |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
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17Q | First examination report despatched |
Effective date: 20190806 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20191023 |