DEVICE FOR CHARGING ACCUMULATOR MEANS

• US 20120049770A1
• Filed: 06/22/2011
• Published: 03/01/2012
• Est. Priority Date: 06/25/2010
• Status: Active Grant

• Current Assignee: Valeo Systemes De Controle Moteur (Valeo SE)
• Original Assignee: Valeo Systemes De Controle Moteur (Valeo SE)
• Inventors: Bouchez, Boris, De Sousa, Luis
• Granted Patent: US 8,593,085 B2
• Time in Patent Office: Days
• US Class Current: 318/139
• CPC Class Codes: B60L 15/007 Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
• CPC Class Codes: B60L 2210/14 Boost converters
• CPC Class Codes: B60L 2220/54 Windings for different functions
• CPC Class Codes: B60L 2220/56 with switched windings
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 53/16 Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/24 Using the vehicle's propulsion converter for charging
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H02M 1/126 using passive filters
• CPC Class Codes: H02M 7/797 using semiconductor devices only
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• 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 10/72 Electric energy management in electromobility
• 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 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

The present invention relates to an electrical device for charging accumulator means (5), said electrical device comprising:

• • a motor (6) connected to an external mains (11);
  • an inverter (2) connected to the phases of said motor (6); and
  • switching means (4) integrated into the inverter (2), said switching means (4) being configured to permit said motor (6) to be supplied and to permit the accumulator means (5) to be charged by the inverter (2).

According to the invention, said electrical device further includes, for each phase of said motor (6), an RLC low-pass filter (18) connected, on the one hand, to the mid-point (16) of the phase of said motor (6) and, on the other hand, to ground.

Claims

1. An electrical device for charging accumulator means, said electrical device comprising:

a motor connected to an external mains;

an inverter connected to phases of said motor; and

switching means integrated into the inverter, said switching means being configured to permit said motor to be supplied and to permit the accumulator means to be charged by the inverter; and

for each phase of said motor, an RLC low-pass filter comprising three terminals respectively connected to the mid-point of a phase of said motor, to ground, and to a phase of the external mains.

2. The electrical device according to claim 1, wherein the RLC low-pass filter comprises:

an inductor connected to the mid-point of said phase of said motor via a first end, and connected to a second coil moiety of said motor via a second end;

a capacitor, a first end of which is connected to the second end of the inductor; and

a resistor, a first end of which is connected to a second end of the capacitor and a second end of which is connected to ground.

3. The electrical device according to claim 1, wherein the switching means comprise an H-bridge structure for each phase of the motor, such that each H-bridge structure has two switching arms respectively comprising two switches, an associated phase of said motor being connected between the four switches of the two switching arms.

4. The electrical device according to claim 1, wherein the switching means respectively comprise at least one transistor and at least one diode in parallel.

5. The electrical device according to claim 1, further comprising a DC/DC converter between the switching means and the accumulator means.

6. The electrical device according to claim 1, wherein said motor is a three-phase motor.

7. The electrical device according to any one of the preceding claims, further comprising a control circuit configured to control the switching means to pass from a mode for supplying said motor to a mode for charging the accumulator means, and vice versa.

8. The electrical device according to claim 7, wherein the control circuit is configured to transmit a PWM (pulse width modulation) control signal.