US 2018/0123445 A1Published application

Power converter

AssigneeHitachi Automotive Systems, Ltd.

InventorsYouhei NISHIZAWA, Kaname SASAKI, Yutaka OKUBO, Yuki FUJITA

Life of this patent

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Abstract

There is provided a power converter which can suppress a surge voltage and reduce noise flowing from an input of a power changer. The power converter includes an inverter circuit 140, a capacitor 514 for smoothing DC power, a capacitor 515 for removing noise, and conductors 564p and 564n. The conductors 564p and 564n are connected to the capacitors 514 and 515 when power side terminals 562p and 562n are connected to an inverter circuit 140, and power source side terminals 561p and 561n are connected to a battery 136. In the conductors 564p and 564n, a parasitic inductance L1 between capacitor terminals 563p and 563n and capacitor terminals 560p and 560n is larger than a parasitic inductance L2 between capacitor terminals 563p and 563n and the power side terminals 562p and 562n.

Claims4

Dependent claims

A power converter, comprising:

a power converting unit including a plurality of semiconductor switching elements and configured to convert power between DC power and AC power;
a first capacitor configured to smooth DC power from a DC power source;
a second capacitor configured to remove noise;
and
a conductor including a positive electrode conductor material and a negative electrode conductor material, of which one ends are connected to the power converting unit, and another ends are connected to the DC power source,
wherein the conductor includes a first connecting portion provided on the one end side and connected to the first capacitor, and a second connecting portion provided on the another end side and connected to the second capacitor,
the first capacitor has an electrode surface on which a positive electrode or a negative electrode is formed, and
the first connecting portion is connected to the electrode surface closer to the one end than the second connecting portion with reference to a center portion of the electrode surface so that wiring distance of the conductor between the first connecting portion and the second connecting portion is larger than wiring distance of the conductor between the first connecting portion and the one end.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/859,994Filed 2 Jan 2018
Priority: JP 2014-1175106 Jun 2014
Published: 3 May 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

H02M 1/14
Details of apparatus for conversion: arrangements for reducing ripples from DC input or output
B60L 53/20
Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of…:…
H02M 7/003
Conversion of AC power input into DC power output; Conversion of DC power input into AC power output: constructional details, e.g. physical…
H02M 7/537
Using devices of a triode or transistor type requiring continuous application of a control signal: using semiconductor devices only, e.g. single…

Family

Application15/308,271Continuation · filed 1 Nov 2016
Application15/859,994Continuation
US 10,181,783 B2Related patent
US 2017/0063218 A1Published application
US 9,893,603 B2Related patent
US 2018/0123445 A1This patent

From the US filing history. Foreign family members aren’t listed.