ON BOARD CHARGER FOR ELECTRIC VEHICLES

• US 20170182896A1
• Filed: 12/20/2016
• Published: 06/29/2017
• Est. Priority Date: 12/24/2015
• Status: Active Grant

• Current Assignee: Fico Triad, S.A. (Panasonic Holdings Corporation)
• Original Assignee: Fico Triad, S.A. (Panasonic Holdings Corporation)
• Inventors: Masip, Guillem Rovira
• Granted Patent: US 10,286,788 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 53/22 Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02M 1/0064 Magnetic structures combining different functions, e.g. storage, filtering or transformation
• CPC Class Codes: H05K 7/1432 specially adapted for power drive units or power converters
• CPC Class Codes: H05K 7/14322 wherein the control and power circuits of a power converter are arranged within the same casing
• CPC Class Codes: H05K 7/20927 Liquid coolant without phase change
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

On board charger for electric vehicles, having an AC input and a DC power output and comprising a housing that contains a power electronic circuit, a control electronic circuit, capacitors, inverters, at least one transformer, input inductor and output inductor inside to allow the conversion of input AC power into output DC power, the base of the housing incorporating a cooling circuit (12), such that the at least one transformer, the at least one input inductor and the at least one output inductor are arranged in a compartment delimited by several side walls and the base of the housing of the on board charger and at least one internal wall, the compartment being at least partially filled with potting which at least partially covers the at least one transformer, the at least one input inductor and the at least one output inductor, these three elements constituting one magnetic block.

Claims

1. On board charger for electric vehicles, the on board charger having an AC input and a DC power output and comprising a housing that contains a power electronic circuit, a control electronic circuit, capacitors, inverters, at least one transformer, at least one input inductor and at least one output inductor inside to allow the conversion of input AC power into output DC power, the base of the housing incorporating a cooling circuit, the at least one transformer, the at least one input inductor and the at least one output inductor are arranged in a compartment delimited by several side walls and the base of the housing of the on board charger and at least one internal wall, such that the compartment is at least partially filled with potting which at least partially covers the at least one transformer, the at least one input inductor and the at least one output inductor, these three elements constituting one magnetic block.

2. On board charger for electric vehicles, according to claim 1, wherein the potting fills at least three quarters of the height of the compartment.

3. On board charger for electric vehicles, according to claim 1, wherein the cooling circuit comprises a cold plate integrated in the housing of the on board charger, an inlet and an outlet.

4. On board charger for electric vehicles, according to claim 1, wherein the coolant is a liquid.

5. On board charger for electric vehicles, according to claim 1, wherein the coolant is air.

6. On board charger for electric vehicles, according to claim 1, wherein the housing of the on board charger comprises several fins on its side external walls to dissipate heat.

7. On board charger for electric vehicles, according to claim 3, wherein the housing of the on board charger including the cold plate of the cooling circuit is made of High Density Die Casting aluminium.