Thermische Konditionierung des Batteriepacks eines Elektrofahrzeugs

Details

Veröffentlichungs-Nr.

EP4751979

Anmeldetag

28. November 2025

Veröffentlichung

3. Juni 2026

Rechtsraum

EP

Abstract

Control software storable and executable by an electronic processing unit (20) of an electric vehicle (10), said electric vehicle (10) including a battery pack (8) and an electric propulsion system (2) comprising a converter (4), an electric motor (3) coupled to the converter (4) and a propulsion control unit (15) configured to control the converter (4) and the electric motor (3) through a FOC control technique as a function of torque values and of motor revolution numbers. When the software is executed, the electronic processing unit (20) becomes configured to: drive (50) the propulsion control unit (15) on the basis of a first torque (τ1) and of a real motor revolution number (VREAL), in such a way that the electric motor (3) provides a torque equal to the first torque (τ1) and turns at a revolution number equal to said real motor revolution number (VREAL), in such a way that the electric propulsion system (2) has a first efficiency (η1) which corresponds to a first power loss of the electric propulsion system (2); acquire thermal status signals (TH) indicative of an initial temperature (Ti) of the battery pack (8) and of a set temperature (TSET) to be reached by the battery pack (8), the set temperature (TSET) being greater than the initial temperature (Ti); determine (30), on the basis of the thermal status signals (TH), an additional power loss of the electric propulsion system (2) which brings the temperature of the battery pack (8) from the initial temperature (Ti) to the set temperature (TSET); store (35) at least one power loss map indicative of the power losses of the electric motor (3) and of the converter (4) as a function of the torque values and of the motor revolution numbers; determine (24) a virtual motor revolution number (VVRT) such that the power loss indicated by the power loss map for the first torque (τ1) and for said virtual motor revolution number (VVRT) is equal to the sum of said first power loss and said additional power loss; and drive (50) the propulsion control unit (15) on the basis of the first torque (τ1) and of the virtual motor revolution number (VVRT), in such a way that the electric motor (3) provides a second torque (τ2), substantially equal to the first torque (τ1), and turns at a revolution number still equal, substantially, to the real motor revolution number (VREAL), in such a way that the electric propulsion system (2) has a second efficiency (η2), which is less than the first efficiency (η1) and corresponds to the sum of the first power loss and of the additional power loss, thereby causing an increment of power losses of the electric propulsion system (2) and the consequent heating of the battery pack (8). Figure 6

Anmelder

Firma

C.R.F. Società Consortile per Azioni

Land

🇮🇹 Italien