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Induction device to limit acoustic oscillations

A technology of induction devices and windings, applied in the direction of circuit devices, transformer/inductor noise damping, electrical components, etc., can solve problems such as incompatibility, expensive design requirements for solutions, etc., and achieve the effect of reducing vibration

Active Publication Date: 2017-03-08
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, these solutions are expensive and not compatible with the design requirements of low-cost hybrid or electric vehicles

Method used

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  • Induction device to limit acoustic oscillations

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Embodiment Construction

[0023] According to a preferred embodiment of the invention shown in the drawings, the induction device according to the invention has a housing BI formed by an aluminum can. The housing BI is fastened at its lower base by four screws to the housing CA protecting the power electronics module of the electric vehicle charger in the region of the housing CA cooled by the charger's cooling system. This is because in this embodiment of the invention an inductive device is used as inductive for the electric vehicle charger.

[0024] The winding SPI is held vertically in the longitudinal direction within the housing BI and is connected to electrical connectors CE through which high currents with a current variation VI enter and leave when the induction device is used. A ferromagnetic body CF is partially inserted into the winding SPI. The ferromagnetic body is composed of a plurality of ferromagnetic blocks (for example ferrite blocks) separated by a gap EF placed transversely with ...

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Abstract

The present invention involves an inductive device that includes a winding (SPI), a ferromagnetic body (CF) including gap (EF) is inserted in the winding, and the winding (SPI) is kept in a metal shell(BI), and a heating film (FTC) is placed between the base of the iron magnet (CF) and the metal case (BI), the film (FTC) has the hardness less than the synthetic resinhardness.

Description

technical field [0001] The present invention relates generally to the field of electrical engineering, and more precisely to an induction device for power electronics, that is to say a current that can withstand, for example, several hundred amperes and can be used in particular for electric vehicles or hybrid A device for powering a charger for a vehicle. Background technique [0002] In a known method, an induction device or induction of this type comprises a winding inside which passes a ferromagnetic body with a gap intended to limit the saturation of the ferromagnetic body as a mechanical air gap. The body is formed, for example, from a plurality of ferromagnetic blocks, eg ferrite blocks, separated from each other by gaps. Both the winding and the ferromagnetic body are inserted into an aluminum can and embedded in resin. The ferromagnetic body is placed directly in contact with the base of the aluminum can to facilitate its cooling. [0003] When the current throug...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/33
CPCH01F27/33H02J50/10
Inventor L-M·热内L·德勒莫
Owner RENAULT SA
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