Magneti Marelli S.p.a.

Weber S.p.a

Magneti Marelli Holding S.p.a.

Marelli Europe S.p.a.

Franco Ciampolini

Danilo Pritelli

Gianluca Aurilio

Rosanna Suglia

Marco Magri

Michele Scarnera

Egidio D'Alpaos

Paolo Lissoni

Vincenzo Giorgianni

Augusto Eugenio Michele Maria Guccione

Riccardo Viancino

Paolo Cominetti

Patrick Giuliani

Fulvio Cicognati

Enrico Della Fornace

Bruno Monteverde

Massimo Armaroli

Ignazio Dentici

Mauro Quacquarelli

Alessandro Cerutti

Gianluca Aurelio

Luca Gusmerini

Andrea Ricci

An electronic device including an electronic switch M, an electrical pre-charge circuit and a measurement, command and diagnosis module. The main electronic switch Mhas a first electrical terminal D, a second electrical terminal S, and a main driving terminal G. The main electronic switch Mis adapted to take, based on a driving signal DRV, depending on the command signal CMD and on an enabling signal ENB, a closed condition or an open condition, wherein the first electrical terminal Dis respectively connected to or disconnected from the second electrical terminal S. The pre-charge electrical circuit is adapted to carry out, based on the command signal CMD, a pre-charge operation, aimed at equalizing the electric potentials (V, V) of the first and second terminals of the device, before the main electronic switch Mtakes a closed condition, upon of a transition from the open condition.

Integrated electronic device with solid-state relay and pre-charge circuit

An electronic control device for controlling a vehicle battery pack comprises a non-programmable monitoring and actuation unit and a two-way serial communication interface. The non-programmable monitoring and actuation unit is electrically and operatively connectable to the battery pack and to each of the battery cells C to detect analog battery parameters P, including at least the magnitudes of battery voltage Vb and battery current Ib, in addition to temperature (Tc, Tcn), current (Ic, Icn) and voltage (Vc, Vcn) of each battery cell C. The non-programmable monitoring and actuation unit generates monitoring signals Sm representative of the detected analog battery parameters P. The two-way serial communication interface is connected to the non-programmable monitoring and actuation unit to receive the monitoring signals Sm and to supply the aforesaid at least one command signal Sc.

Electronic control device for controlling a vehicle battery pack and system employing such a device

A method to construct an electric machine provided with: a stator having a magnetic core longitudinally crossed by a plurality of stator slots; a stator winding having a series of rigid bars, which are 'U'-shaped and are inserted through the stator slots defining an entry side, in which the cusps of the 'U'-shaped bars are placed, and an exit side, in which the legs of the &#x201c;U&#x201d;-shaped bars are placed; the construction method comprises the steps of electrically connecting the ends of at least two non-adjacent legs to one another by means of a connection bridge, which is made of a flat plate arranged perpendicular to the central axis of rotation and has, for each leg, a corresponding &#x201c;U&#x201d;-shaped seat, which is suited to receive the end of the leg.

Method to construct an electric machine having a stator winding with rigid bars

A laser welding method to weld two adjacent metal elements of a stator winding with rigid bars for an electric machine; the two metal elements are arranged one beside the other and have respective upper surfaces, which are arranged coplanar to one another and have at least one common edge; in succession, in the direction of the upper surfaces of the two metal elements, a first laser beam is aimed, which is fed along a first welding line, which is perpendicular to the common edge and extends through the common edge itself, and then a second laser beam is aimed, which is fed along a second welding line, which is perpendicular to the common edge and extends through the common edge itself, is parallel to and spaced apart from the first line and has a length that is smaller than the one of the first line.

Laser welding method to weld two adjacent metal elements of a stator winding with rigid bars for an electric machine

An electric machine provided with: a stator having a magnetic core longitudinally crossed by a plurality of stator slots; a stator winding having a series of rigid bars, which are 'U'-shaped and are inserted through the stator slots defining an entry side, in which the cusps of the 'U'-shaped bars are placed, and an exit side, in which the legs of the &#x201c;U&#x201d;-shaped bars are placed; the ends of at least two non-adjacent legs are electrically connected to one another by means of a connection bridge; and an insulating support is provided, which houses the connection bridge, is arranged under the connection bridge and has a plurality of through holes, into which some legs are inserted, which have to pass through the insulating support itself.

Electric machine having a stator winding with rigid bars

An electronic device for the diagnosis of insulation loss of an energized electrical apparatus, with respect to a ground. The device includes a first resistance-switch group and a second resistance-switch group, connectable or disconnectable in a controlled manner, and also a first measurement circuit and a second measurement circuit, arranged in parallel to the first and second resistance-switch groups, respectively. The first and second measurement circuits include respective first and second detection circuits, first and second charge modulation circuits and first and second partition resistors (RB, RB). The first and second charge modulation circuits allow a dynamic 'switching' measurement technique. Moreover, a method is described for measuring the insulation resistances (RI, RI) of an energized electrical apparatus with respect to ground, in which the method is carried out by a device according to the invention. Finally, a self-diagnosis method of device is described.

Electronic device, system and method for insulation resistance measurements with functions of self-diagnosis and diagnosis of insulation loss with respect to ground of an energized electrical apparatus

A cooling circuit with cooling liquid for lithium-ion batteries comprising a battery pack comprising a plurality of cells electrically connected with each other, suitable for powering an electric machine for traction. The cells are perimetrically delimited by external walls. At least one bag contains cooling liquid associated in contact with the outer walls of the cells. The bag is made of deformable plastic material so as to be counter-shaped to the outer walls to adhere perimetrally to the outer walls and the circuit provides forced circulation of the cooling liquid through said at least one bag.

Cooling circuit with cooling fluid for lithium batteries, and a vehicle comprising said cooling circuit

An electronic device for controlling the electric charge of a load electrically supplied by a battery pack, comprising: a support; a control module integrated in the support; an electric pre-charging circuit of the load controlled by the control module; an electric active discharge circuit of the load controlled by the control module. The electric pre-charging circuit comprises at least one first solid-state switch and is integrated on the support. The electric active discharge circuit comprises at least one second solid-state switch and is integrated on the support. The first solid-state switch and the second solid-state switch work either as a switch or as a variable resistor.

Electronic device for controlling the electric charge of a load electrically supplied by a battery pack and system for moving an electric or hybrid traction vehicle using the device

Method and station for the construction of a stator winding with rigid bars for a rotary electrical machine; an insulated wire of electrically conductor material and provided on the outside with an insulating layer is unwound from a coil. A final end of the insulated wire is bent in a 'U' shape so as to create a bar having two legs connected to one another by a cusp. The insulated wire is transversely cut to separate the rigid bar from the remaining part of the wire; and the bar is inserted into a stator slot of a magnetic core of a stator. The electrical conductivity is measured between the core and the outer surface of the insulated wire by means of a first electrode electrically and permanently connected to the core of the insulated wire and a second electrode, which rubs against the outer surface of the insulated wire.

Method and station for the construction of a stator winding with rigid bars for a rotary electrical machine

The present invention relates to a solid-state relay including a power semiconductor switch device connected between a first electrical terminal and a second electrical terminal and having a command terminal. An electronic driving block is adapted to generate a command signal applied to the command terminal to switch the at least one semiconductor switch device from a closed/open state to an open/closed state to disconnect/connect the first electrical circuit portion from/to the second portion of the electrical circuit. An electronic block detects a current which crosses the power semiconductor switch device. The electronic detection block includes a first electronic device adapted to generate a first signal indicative of a difference of potential between the first and second terminals generated by the current which crosses a total resistance present between the first and second terminals of the power semiconductor switch device in the closed state. The total resistance comprises the sum of a first resistance associated with the semiconductor switch device in the closed state and of second bonding resistances associated with an electrical connection between one of the conductive terminals and the respective either first or second electrical terminal.

Solid-state relay including an electronic current detection block

An electric apparatus with safety connector for preventing electric shock, having an electric circuit comprising at least a pair of terminals electrically separated from each other, and a cover which covers the electric circuit so as to prevent access to it when it is disposed in the assembly configuration to cover the electric circuit. The cover is mechanically fixed in position by a plurality of attachment mechanisms. A safety connector associated with the cover and provided with an electric conductor element, wherein the security connector passes through the cover so as to short-circuit the terminals and a projection supports the electric conductor element and is movable from a closed configuration in which it short-circuits the terminals to an open position in which it does not short circuit the terminals. A cover element which, in closed configuration, at least partially overlaps at least one of attachment mechanisms.

Electric apparatus with safety connector for preventing electric shock

A method for building a magnetic core including laminations bound into packs for an electrical machine comprises steps of: stacking a group of laminations one on top of the other to build the core; binding into a pack the group building the core by locking members that axially compress the group with a predetermined clamping force; pre-compressing, before clamping the pack by the locking members, the group by a pre-compression press that is independent and separate from the locking members; measuring an axial length of the group while the group is being compressed by the pre-compression press; initially forming the group with a normally lacking number of laminations to initially have the measured length that is lower than or substantially equal to a desired length; and adding, after having completed pre-compression, an additional number of laminations to the group determined according to a difference between the desired and measured lengths.

Method for building magnetic core including laminations bound into packs for electrical machine

A connection system establishes an electrical connection between an electrical device and at least one pair of cables each of which ends with a cable terminal. The connection system comprises a fixed part including a support base adapted to be rigidly fitted to a wall of the electrical device and, for each cable, a connection screw protruding from the support base and electrically connectable to the electrical device. A mobile part includes a perimeter frame adapted to be mechanically fitted to the support base and having a passage wall defining, for each cable, a passage-through hole through which an end part of the cable passes so that the corresponding cable terminal is disposed inside the perimeter frame and aligned with the respective connection screw when the perimeter frame is mechanically fitted to the support base.

Connection system for establishing electrical connection between electrical device for automotive industry and at least one pair of cables

An electric machine includes a stator having a magnetic core crossed longitudinally by a stator slot and stator winding having a phase and series of rigid, U-shaped bars inserted through the slot. The slot defines 'entry' and 'exit' sides in which cusps and legs of the bars are placed. The legs coming out the &#x201c;exit&#x201d; side are twisted through relative double folds each of which defines internal and external folds in opposite directions. Ends of the legs are electrically connected to each other to form electrical paths of the winding. A width of the cusps is identical for the bars. The ends of a pair in a part of the winding are initially not adjacent to each other and folded toward each other to be arranged parallel to each other in a circumferential direction so that the ends touch each other to allow an electrical connection between the ends.

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Bologna, Italy

Franco Ciampolini