Valeo Systemes Thermiques

Jonathan Fournier

Morgan Le Goff

Bertrand Puzenat

Serif Karaaslan

Xavier Rousseil

Xavier Goumain

Geoffroy Capoulun

Pascal Guigou

Thierry Elbhar

Philippe Bourdel

Sylvain Grandyot

Laurent Decool

Arnaud Faivre

Nicolas Siffrein-Blanc

Rémi Carlicchi

An air pulse device according to the invention is used, in particular, in a heating, ventilation and/or air conditioning system of a motor vehicle. The air pulse device comprises an electric motor () having a rotor () and a stator (). The stator is mounted about a support means () such that it is in contact with said support means, the latter being made of an electrically conductive material and connected to an electrical ground. Moreover, a shield () is disposed in the vicinity of the stator, said shield also being electrically connected to the electrical ground.

Electronically switched electric motor and corresponding air pulse device

The invention relates to a module for controlling the power supply () of an electric motor which comprises a printed circuit board () bored with a plurality of through-holes (), respectively associated with an electrical connection pad () supported by said plate adjacent to each of said through-holes. The electrical connection pads () are arranged on a surface () of the printed circuit board () so that a virtual circle can be defined passing substantially through each of the connection pads, said pads being concentrated on a portion of the printed circuit board so as to form an arc of circle which is shorter than half the circumference of said virtual circle.

Module for controlling the power supply of an electric motor

An air pulse device according ding to the invention is used, in particular, in a heating, ventilation and/or air conditioning system of a motor vehicle. The air pulse device comprises a rotor () and a stator (). The stator is mounted on a support means () that projects from a metallic plate () and is electrically connected to an electrical ground. A shield () is disposed between the rotor and the stator, which shield is also electrically connected to the electrical ground.

A method of control of an electric motor involves generation of an electrical control signal for the electric motor, the signal having a series of sequences of pulses, each pulse being defined by a width and a period. The ratio of width to period defines a mean electrical power provided to the electric motor by this pulse. The period of a pulse situated at an arbitrary position of a sequence of pulses is equal to the period of the pulse situated at that position of any other sequence of pulses of the series, and the period of each pulse is fixed in a pseudo random manner, such that the inverse of the fixed period lies above the audible acoustic spectrum. The number of pulses of each sequence is fixed so that the inverse of the sum of the periods of all the pulses lies below the audible acoustic spectrum.

Spectral spread for electric motor

The invention relates to a device for controlling the electrical power supply of a circuit for a vehicle, said vehicle comprising: an electrical battery (); an electrical energy storage element (C), one terminal of which is connected to the first terminal (VBAT) of the battery and the other terminal of which is connected to an electrical earth; a first circuit (), capable of consuming electricity coming from the electrical battery (), and having first and second terminals respectively connected to the first and second terminals (&#x2212;VBAT, VBAT) of the battery (); and electrical supply management means (QI) configured to allow or prevent the passage of electrical current between said electrical energy storage element (C) and said first circuit (). Said control device comprises detection means () configured to detect a drop in voltage of the battery () below a threshold value, and command means () configured, in the event of detection of a drop in voltage of the battery below said threshold value, to command said electrical supply management means (Q) in order to prevent the passage of electrical current between the electrical energy storage element (C) and said first circuit ().

Device for controlling the electrical power supply of a circuit for a vehicle, comprising a battery and corresponding assembly

An electrical or electronic device () capable of being supplied with two different values of voltage from respectively a first electrical network () and from a second electrical network (), comprises: a first connecting interface () capable of being linked, under normal connection conditions, with a ground conductor (GND_) and a voltage conductor of the first electrical network (); a second connecting interface () capable of being linked, under normal connection conditions, with the ground conductor (GND_) and a voltage conductor of the second electrical network (); the ground connections of the two connecting interfaces () being linked together to form a common ground; and at least one switch module () interposed in series on the common ground, the switch module being capable of switching into an open position following a modification in the connection conditions of the first or second interface.

Electrical or electronic device with two supply voltages

An electrical filter () is suitable for having a greater effectiveness for reducing the common mode current that an electrical device () can produce in the direction of a voltage source () which is used to supply this device. Such a filter can be useful for meeting the electromagnetic compatibility requirements set by the BMW Group Standard GS 95002-2 'Electromagnetic Compatibility (EMC)&#x2014;requirements and tests on components up to 60 V nominal voltage'.

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Le Mesnil Saint Denis, France

Jonathan Fournier