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Filter unit

A filter and capacitor technology, applied in capacitors, electrical components, fixed capacitors, etc., can solve the problem of filter attenuation characteristics reduction

Pending Publication Date: 2022-02-01
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the capacitor is affected by a magnetic field, the attenuation characteristics of the filter may decrease

Method used

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Experimental program
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Embodiment Construction

[0017] One embodiment of the filter unit will be described below.

[0018] like figure 1 As shown, a vehicle 10 includes a battery 11 and a power conversion device 12 . The power conversion device 12 includes a DC / DC converter 13 , a filter 20 , and a filter unit 30 . The vehicle 10 is an electric vehicle or a hybrid vehicle in which an electric motor is used as a drive source. The battery 11 is used as a power source for a motor mounted on the vehicle 10 . As the battery 11 , for example, a chargeable and dischargeable power storage device such as a lithium-ion secondary battery or a nickel-metal hydride storage battery can be used. The power conversion device 12 is electrically connected to a load 19 in the home. The power conversion device 12 supplies electric power to a load 19 in a home.

[0019] The DC / DC converter 13 includes a bridge circuit 14 , a transformer 15 , and a rectification circuit 16 . The bridge circuit 14 is provided on the primary side of the trans...

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PUM

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Abstract

A filter unit according to the present invention includes a substrate, capacitors mounted on the substrate, and two inductors. The inductors each include a wire and a core. The core includes two core bodies. The core bodies each have a ring shape and include a wiring hole. The capacitors are disposed between the two core bodies. An opposed section extends from the respective two core bodies to a position opposed to the capacitors C. The opposed section is opposed to all of the plurality of capacitors.

Description

technical field [0001] The invention relates to filter units. Background technique [0002] Electronic equipment includes filters for attenuating noise. The filter described in Patent Document 1 includes an inductor and a capacitor. The inductor has wiring and a core surrounding the wiring. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2015-167154 [0004] When reducing the size of the filter, the capacitor is arranged near the core. When current flows to the wiring, a magnetic field due to noise is generated in the core. If the capacitor is affected by a magnetic field, the attenuation characteristics of the filter may decrease. Contents of the invention [0005] An object of the present invention is to provide a filter unit capable of suppressing a reduction in noise attenuation characteristics. [0006] In order to solve the above-mentioned problems, according to a first aspect of the present invention, there is provided a filter unit including: a capa...

Claims

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Application Information

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IPC IPC(8): H03H7/09H01F17/04H01F27/00H01G4/40
CPCH03H7/09H01F27/00H01F17/04H01G4/40H01G4/385H01F27/2847H01F27/40H03H1/0007H03H2001/0021H01F27/24H01F27/2823H03H7/0115
Inventor 秋田义文胜吕知弘
Owner TOYOTA IND CORP