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Conduction path with noise filter

A technology of noise filter and conductive circuit, applied in electrical components, magnetic field/electric field shielding, electrical equipment casing/cabinet/drawer, etc., can solve problems such as difficult to effectively reduce surge noise

Active Publication Date: 2018-12-21
AUTONETWORKS TECH LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the method of enclosing the wire harness with braided wires, it is difficult to effectively reduce the surge noise of a specific frequency band generated by the inverter device

Method used

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  • Conduction path with noise filter
  • Conduction path with noise filter
  • Conduction path with noise filter

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Below, refer to Figure 1 ~ Figure 3 Example 1 in which the present invention is embodied will be described. The conductive circuit A with a noise filter of the first embodiment is a conductive circuit laid between a motor 40 and an inverter device 42 mounted on an electric vehicle (not shown) such as an electric car or a hybrid car. In this electric vehicle, a motor case 41 as a case of the motor 40, an inverter case 43 as a case of the inverter device 42, and a shield layer 38 connecting the two cases 41 and 43 constitute the case. body ground line 44.

[0025] The conductive circuit A with a noise filter is configured to include a U-phase line 11u (the main body of the conductive circuit described in the claims), a V-phase line 11v (the main body of the conductive circuit described in the claims), and a W-phase line constituting the three-phase AC circuit 10 . 11w (conductive circuit main body described in claims); noise filter 15 for reducing surge; shielding laye...

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PUM

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Abstract

The object of the invention is to improve the reliability of a noise reduction function. A conduction path (A) with a noise filter, comprises a plurality of coated conductors (13u, 13v, 13w) in whicha plurality of conduction path bodies (11u, 11v, 11w) are surrounded by an insulating layer (12u, 12v, 12w); a plurality of electrical conductors (16u, 16v, 16w) provided so as to be individually fixed on the outer periphery of the plurality of insulating layers (12u, 12v, 12w), the electrical conductors (16u, 16v, 16w) individually forming capacitors (17u, 17v, 17w) between the electrical conductors (16u, 16v, 16w) and the conduction path bodies (11u, 11v, 11w); and positioning members (20, 30) for positioning the plurality of coated conductors (13u, 13v, 13w).

Description

technical field [0001] This invention relates to conductive circuits with noise filters. Background technique [0002] Patent Document 1 describes a technique in which a wire harness composed of three-phase AC wires is laid between a motor of an electric vehicle and an inverter device, and as a measure against noise in the wire harness, the wire harness is surrounded by a braided wire, and Both ends are connected to the shield case of the motor and the shield case of the inverter device. In this way, if the wire harness is shielded with a braided wire, it is possible to prevent the noise emitted from the motor, the inverter device, and the wire harness from affecting peripheral devices and circuits. [0003] However, in the method of surrounding the wire harness with braided wires, it is difficult to effectively reduce surge noise in a specific frequency band generated by the inverter device. Therefore, a noise filter is conceived in which a three-phase AC line is construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H7/01H05K9/00
CPCH03H7/01H05K9/00H03H1/0007H05K5/0247H03H7/0115H03H7/09H03H2001/0021
Inventor 平田启二相泽武史
Owner AUTONETWORKS TECH LTD