# US 10,122,313 B2 · Power conversion device

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- Number: US 10,122,313 B2
- Document ID: US10122313B2
- Status: Granted
- Kind: B2
- Application number: 15/528,014
- Filed: 2016-01-12
- Published: 2017-11-16
- Granted: 2018-11-06
- Earliest claimed: 2015-01-19
- Assignees: Hitachi Automotive Systems, Ltd.
- Applicants: Hitachi Automotive Systems, Ltd.
- Inventors: Yosei Hara; Morio Kuwano
- Web page: https://patentgrep.com/patent/US10122313B2

## CPC

- H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections}
- H02P 27/06: using DC to AC converters or inverters (H02P27/05 takes precedence)
- B60L 50/51: characterised by AC-motors
- H01G 4/228: Terminals
- H02M 7/48: using discharge tubes with control electrode or semiconductor devices with control electrode
- H05K 7/1432: {specially adapted for power drive units or power converters}
- H10D 62/10: Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10W 20/20: Interconnections within wafers or substrates, e.g. through-silicon vias [TSV]
- Y02T 10/64: Electric machine technologies in electromobility
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- 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)
- H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

It is an object of the present invention to enhance connection reliability of terminals while enhancing assembling performance. A power conversion device according to the present invention includes: a power semiconductor module having a power terminal; a capacitor module for supplying smoothed power to the power semiconductor module; and a mold bus bar in which a conductor part for electrically connecting the power semiconductor module and the capacitor module is sealed by a resin material, wherein the capacitor module has a positive capacitor terminal and a negative capacitor terminal, the power terminal, the positive capacitor terminal, and the negative capacitor terminal are formed such that the main surfaces of the terminals face in the same direction, and the mold bus bar has a first terminal contacting with the main surface of the power terminal, a second terminal contacting with the main surface of the positive capacitor terminal, and a third terminal contacting with the main surface of the negative capacitor terminal.

## Claims

### Claim 1

A power conversion device comprising:
a power semiconductor module having a power terminal;
a capacitor module for supplying smoothed power to the power semiconductor module; and
a mold bus bar in which a conductor part for electrically connecting the power semiconductor module and the capacitor module is sealed by a resin material,
wherein the capacitor module has a positive capacitor terminal and a negative capacitor terminal,
the power terminal, the positive capacitor terminal, and the negative capacitor terminal are formed such that the main surfaces of the terminals face in the same direction,
the mold bus bar has a first terminal contacting with the main surface of the power terminal, a second terminal contacting with the main surface of the positive capacitor terminal, and a third terminal contacting with the main surface of the negative capacitor terminal,
wherein the power terminal is configured of a first positive power terminal, a first negative power terminal, a second positive power terminal, and a second negative power terminal, and is formed such that the main surfaces of the terminals face in the same direction,
the first terminal is configured of a first positive conductor terminal connected to the first positive power terminal, a first negative conductor terminal connected to the first negative power terminal, a second positive conductor terminal connected to the second positive power terminal, and a second negative conductor terminal connected to the second negative power terminal, and is formed such that the main surfaces of the terminals face in the same direction, and
wherein the main surface of the first positive conductor terminal, the main surface of the first negative conductor terminal, the main surface of the second positive conductor terminal, and the main surface of the second negative conductor terminal overlap on an imaginary plane that is parallel with an arrangement direction of the first positive conductor terminal, the first negative conductor terminal, the second positive conductor terminal, and the second negative conductor terminal.

### Claim 2 (depends on 1)

The power conversion device according to claim 1, further comprising at least one more positive capacitor terminal, wherein
the positive capacitor terminals are structurally configured such that the main surfaces of the positive capacitor terminals overlap on the imaginary plane with the positive capacitor terminals.

### Claim 3 (depends on 2)

The power conversion device according to claim 2, further comprising at least one more negative capacitor terminal, wherein
the negative capacitor terminals are structurally configured such that the main surfaces of the negative capacitor terminals overlap on the imaginary plane with the negative capacitor terminals.