# US 2014/0192496 A1 · Power unit for electric vehicle inverter

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- Number: US 2014/0192496 A1
- Document ID: US20140192496A1
- Status: Published application
- Kind: A1
- Application number: 14/238,663
- Filed: 2012-07-25
- Published: 2014-07-10
- Earliest claimed: 2011-08-19
- Assignees: Valeo Systemes de Controle Moteur
- Inventors: Guillaume Tramet; Roger Deniot; Benjamin Morliere; Fabrice Herault
- Web page: https://patentgrep.com/patent/US20140192496A1

## CPC

- H05K 7/14322: {wherein the control and power circuits of a power converter are arranged within the same casing}
- B60L 53/20: characterised by converters located in the vehicle
- H05K 1/18: structurally associated with non-printed electric components (H05K1/16 takes precedence)
- H05K 7/026: {Multiple connections subassemblies}
- H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections}
- H10W 72/5363: {the connected ends being wedge-shaped}
- H10W 74/00: Encapsulations, e.g. protective coatings
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 90/14: Plug-in electric vehicles
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- 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
- 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)
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

The invention relates to a power unit having a housing (1) in which at least one power electronics module (2), preferably a plurality of power electronics modules (2) is or are housed, positioned on a plane of the housing (1), the or each power electronics module (2) comprising at least one power electronics component (16), and being connected to at least one electronic control board (6) by at least one connection element (5). The power unit is characterized in that it comprises at least one member (7, 8) supporting the at least one electronic control board facing the power module (2) over at least one expanse of the board (6), the support member being the beam (7, 8) substantially parallel to said plane of the housing.

## Claims

### Claim 1

A power unit comprising:
a housing in which a plurality of power electronics modules is housed, positioned on a plane of the housing, each power electronics module comprising at least one power electronics component, and being connected to at least one electronic control board by at least one connection element; and
at least one member supporting the at least one electronic control board facing the power module over at least one expanse of the board, the support member being a beam substantially parallel to said plane of the housing.

### Claim 2 (depends on 1)

The power unit as claimed in claim 1, wherein the connection element is soldered to the control board ultrasonically.

### Claim 3 (depends on 1)

The power unit as claimed in claim 1, wherein the connection element connecting the at least one power module and the at least one electronic control board consists of at least one electrical bonding wire.

### Claim 4 (depends on 1)

The power unit as claimed in claim 1, wherein the support member is fixed to the housing of the power unit.

### Claim 5 (depends on 4)

The power unit as claimed in claim 4, wherein the member is supported by one or more lateral walls of the housing.

### Claim 6 (depends on 1)

The power unit as claimed in claim 1, wherein the electronic control board is fixed to the support member by at least one fixing screw.

### Claim 7 (depends on 6)

The power unit as claimed in claim 6, further comprising two fixings facing the power module.

### Claim 8 (depends on 7)

The power unit as claimed in claim 7, wherein the connection element connects the board between said two fixings.

### Claim 9 (depends on 1)

The power unit as claimed in claim 1, wherein the support member comprises a rigid first material extending in the support member.

### Claim 10 (depends on 9)

The power unit as claimed in claim 9, wherein an electrically insulating second material covers at least one part of said rigid first material.

### Claim 11 (depends on 10)

The power unit as claimed in claim 10, wherein the second material is overmolded onto the first material.

### Claim 12 (depends on 10)

The power unit as claimed in claim 10, wherein the fixing enters a hole formed in the first material of the support member, the hole being filled with the electrically insulating second material.

### Claim 13 (depends on 1)

The power unit as claimed in claim 1, wherein the deflection of the support member is less than 0.1 mm when the support member is subjected to a transverse loading of between 1 and 2 kg and is subjected to ultrasound at between 50 and 100 kHz.

### Claim 14 (depends on 1)

An inverter for an electric vehicle, comprising a power unit as claimed in claim 1.

### Claim 15 (depends on 1)

An electric vehicle comprising a power unit as claimed in claim 1, connected to a high-voltage battery of the electric vehicle so that the battery can be recharged from an electrical mains outlet.