# US 2019/0356238 A1 · Power converter

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- Number: US 2019/0356238 A1
- Document ID: US20190356238A1
- Status: Published application
- Kind: A1
- Application number: 16/478,250
- Filed: 2017-12-19
- Published: 2019-11-21
- Earliest claimed: 2017-01-17
- Assignees: Hitachi Automotive Systems, Ltd.
- Applicants: Hitachi Automotive Systems, Ltd.
- Inventors: Ayumu HATANAKA; Takeshi SEKI; Kazushi TAKAHASHI; Kenji OHSHIMA
- Web page: https://patentgrep.com/patent/US20190356238A1

## CPC

- H10W 76/12: characterised by their shape
- H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections}
- H02M 7/155: using semiconductor devices only
- H02M 7/48: using discharge tubes with control electrode or semiconductor devices with control electrode
- H05K 7/14329: {specially adapted for the configuration of power bus bars}
- H10W 40/47: by flowing liquids, e.g. forced water cooling
- H10W 72/019: {of bond pads}
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

A problem to be solved by the present invention is to secure a creepage distance while maintaining miniaturization. A power converter according to the present invention includes a positive electrode side conductor, a negative electrode side conductor, and an insulating member disposed between the positive electrode side conductor and the negative electrode side conductor, in which the positive electrode side conductor or the negative electrode side conductor includes a main surface on a side opposite to a surface in contact with the insulating member, a side surface connected to the surface in contact with the insulating member, and an inclined surface forming an obtuse angle with respect to each of the main surface and the side surface, and the insulating member includes a protrusion formed so as to overlap with the side surface and the inclined surface as viewed in a direction perpendicular to the side surface.

## Claims

### Claim 1

A power converter comprising:
a positive electrode side conductor;
a negative electrode side conductor; and
an insulating member disposed between the positive electrode side conductor and the negative electrode side conductor,
wherein the positive electrode side conductor or the negative electrode side conductor includes
a main surface on a side opposite to a surface in contact with the insulating member,
a side surface connected to the surface in contact with the insulating member, and
an inclined surface forming an obtuse angle with respect to each of the main surface and the side surface, and
the insulating member includes a protrusion formed so as to overlap with the side surface and the inclined surface as viewed in a direction perpendicular to the side surface.

### Claim 2 (depends on 1)

The power converter according to claim 1,
further comprising a sealing resin material filled between at least the inclined surface and the protrusion.

### Claim 3 (depends on 2)

The power converter according to claim 2,
wherein the positive electrode side conductor disposed at a position facing the negative electrode side conductor with the insulating member interposed therebetween,
the insulating member includes a cylindrical portion forming a through hole,
the sealing resin material seals the positive electrode side conductor, the negative electrode side conductor, and the insulating member and is filled in the through hole, and
the cylindrical portion is formed so as to overlap the side surface and the inclined surface as viewed from the direction perpendicular to the side surface.

### Claim 4 (depends on 1)

The power converter according to claim 1,
wherein the inclined surface is a shear droop surface formed when the positive electrode side conductor or the negative electrode side conductor is cut.

### Claim 5

A manufacturing method of a power converter comprising:
a first step of cutting a plate-like member to form a positive electrode side conductor or a negative electrode side conductor;
a second step of removing a burr formed at an end portion of the positive electrode side conductor or the negative electrode side conductor; and
a third step of disposing the positive electrode side conductor or the negative electrode side conductor such that a surface on a side from which the burr is removed is in contact with an insulating member and a shear droop surface of the positive electrode side conductor or the negative electrode side conductor faces a protrusion formed in the insulating member.