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A preparation method and application of a carbon brush for a starter motor of a hybrid electric vehicle

A technology for hybrid electric vehicles and starter motors, which is applied in the manufacture of brushes, circuits, current collectors, etc. to achieve the effects of good electrical conductivity, suppression of sparks, and high resistivity

Active Publication Date: 2018-12-18
湖北东南佳新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the technical problems existing in the existing carbon brushes, and to provide a new carbon brush for the starter motor of hybrid electric vehicles, which can not only meet the current density required by the motor, but also solve the problem of sparks generated when the carbon brush is used. , but also improve the service life of carbon brushes

Method used

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  • A preparation method and application of a carbon brush for a starter motor of a hybrid electric vehicle
  • A preparation method and application of a carbon brush for a starter motor of a hybrid electric vehicle
  • A preparation method and application of a carbon brush for a starter motor of a hybrid electric vehicle

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1) Preparation of Colloidal Powder

[0050] Prepare materials according to the following parts by weight:

[0051] Graphite powder 79.5 Phenolic resin 20 Pitch coke 0.5 Alcohol 30

[0052] Under stirring conditions, mix graphite powder, phenolic resin, and pitch coke for 1 hour, then add alcohol, and stir at 95°C for 1.5 hours; after the materials are cooled, they are sequentially crushed and sieved to obtain colloidal powder;

[0053] 2) Preparation of pressed powder A

[0054] Prepare materials according to the following parts by weight:

[0055] Colloidal powder 42 Electrolytic copper powder 55 Molybdenum disulfide 3

[0056] Under stirring conditions, mix colloidal powder, electrolytic copper powder, and molybdenum disulfide for 1 hour to prepare pressed powder A;

[0057] 3) Preparation of pressed powder B

[0058] Prepare materials according to the following parts by weight:

[0059] Colloidal powder 70 Electrolytic copper powder 27 Molybdenum disulfide 3

...

Embodiment 2

[0065] 1) Preparation of Colloidal Powder

[0066] Prepare materials according to the following parts by weight:

[0067] Graphite powder 78 Phenolic resin 20 Pitch coke 2 Alcohol 30

[0068] Under stirring conditions, mix graphite powder, phenolic resin, and pitch coke for 1.5 hours, then add alcohol, and stir at 95°C for 1 hour; after the materials are cooled, they are sequentially crushed and sieved to obtain colloidal powder;

[0069] 2) Preparation of pressed powder A

[0070] Prepare materials according to the following parts by weight:

[0071] Colloidal powder 42 Electrolytic copper powder 55 Molybdenum disulfide 3

[0072] Under stirring conditions, mix colloidal powder, electrolytic copper powder, and molybdenum disulfide for 1 hour to prepare pressed powder A;

[0073] 3) Preparation of pressed powder B

[0074] Prepare materials according to the following parts by weight:

[0075] Colloidal powder 70 Electrolytic copper powder 27 Molybdenum disulfide 3

[00...

Embodiment 3

[0081] 1) Preparation of Colloidal Powder

[0082] Prepare materials according to the following parts by weight:

[0083] Graphite powder 75 Phenolic resin 20 Pitch coke 5 Alcohol 30

[0084] Under stirring conditions, mix graphite powder, phenolic resin, and pitch coke for 1 hour, then add alcohol, and stir at 99°C for 1 hour; after the materials are cooled, they are sequentially crushed and sieved to obtain colloidal powder;

[0085] 2) Preparation of pressed powder A

[0086] Prepare materials according to the following parts by weight:

[0087] Colloidal powder 42 Electrolytic copper powder 55 Molybdenum disulfide 3

[0088] Under stirring conditions, mix colloidal powder, electrolytic copper powder, and molybdenum disulfide for 1 hour to prepare pressed powder A;

[0089] 3) Preparation of pressed powder B

[0090] Prepare materials according to the following parts by weight:

[0091] Colloidal powder 70 Electrolytic copper powder 27 Molybdenum disulfide 3

[0092]...

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Abstract

The present invention discloses a preparation method of a hybrid electric vehicle starting motor carbon brush and an application of the carbon brush. The carbon brush comprises the following raw materials of graphite powder, a binder, pitch coke, a solvent, electrolytic copper powder and a solid lubricant, wherein the pitch coke occupies 0.5%-0.8% of the total mass of the graphite powder, the binder and the pitch coke. By adding the pitch coke in the carbon brush, a layer of graphite lubrication film of uniform thickness is conducive to being formed on the surface of a motor commutator, and by the self lubricating effect of the lubrication film, the service life of an electric brush can be improved. The carbon brush is a two-layer laminated structure and comprises a high copper-bearing layer and a low copper-bearing layer, the high copper-bearing layer is small in electrical resistivity and good in product conductivity, and the low copper-bearing layer is large in electrical resistivity and can restrain the sparks generated when the carbon brush works.

Description

technical field [0001] The invention relates to a carbon brush for a motor, in particular to a preparation method and an application of a carbon brush for a starter motor of a hybrid electric vehicle. Background technique [0002] A hybrid vehicle is a vehicle that is equipped with two power sources at the same time - a thermal power source (generated by a traditional gasoline engine or a diesel engine) and an electric power source (battery and electric motor). [0003] Carbon brushes are also known as electric brushes. The carbon brushes used on automobile starters are generally metal graphite brushes. The main raw materials are electrolytic copper powder and graphite. This type of brush has both the lubricating properties of graphite and the high conductivity of metal. It is suitable for low-voltage motors with high load and low commutation requirements. [0004] Thermal power source starter motors have higher requirements on the service life of carbon brushes, which must...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R43/12H01R39/20H01R39/22H01R39/24H01R39/26
Inventor 廖仕明朱约辉
Owner 湖北东南佳新材料有限公司