公开(公告)号：US20220029553A1

公开(公告)日：2022-01-27

申请号：US17381443

申请日：2021-07-21

Applicant: UNIVERSITÄT STUTTGART

Inventor： David MAIER ,  Marco ZIMMER ,  Nejila PARSPOUR

IPC: H02M7/217 ,  H02J50/10 ,  H02P25/022

Abstract: The present invention relates to a circuit arrangement having an active rectifier circuit, in particular on a secondary side of an inductive energy transmission path. The circuit arrangement has a half or full bridge of power transistors for rectifying an AC voltage induced in an input inductor of the circuit arrangement. The power transistors are connected to the input inductor in such a way that an auxiliary voltage is split off from the induced AC voltage for switching the power transistors. As a result, even large currents, which result in a low output voltage, can be transmitted without endangering the operation of the rectifier circuit.

公开(公告)号：US20220029470A1

公开(公告)日：2022-01-27

申请号：US17415089

申请日：2018-12-20

Applicant: UNIVERSITÄT STUTTGART

Inventor： Mike BÖTTIGHEIMER ,  Nejila PARSPOUR ,  Stefanie HERMANN

IPC: H02J50/60 ,  H02J50/10 ,  H02J7/00 ,  B60L53/124

Abstract: In a method and an apparatus for detecting electrically conductive foreign bodies during inductive energy transmission between a primary coil (1) and a secondary coil (2), at least one sensor coil (5) is arranged between the primary coil (1) and the secondary coil (2), and a current flowing in the sensor coil (5) due to the induced voltage during the energy transmission is detected and evaluated. In this case, the sensor coil (5) is connected to at least one capacitor to form a resonant circuit which is matched to the excitation frequency of the primary coil (1). The phase position of the current in the resonant circuit in relation to a reference signal is then used to determine whether there are electrically conductive foreign bodies (4) between the primary coil (1) and the secondary coil (2). A high degree of sensitivity, also in relation to small electrically conductive foreign bodies within the energy transmission path, is achieved by means of the method and the apparatus.

公开(公告)号：US20250088035A1

公开(公告)日：2025-03-13

申请号：US18882905

申请日：2024-09-12

Applicant: Universität Stuttgart Körperschaft des öffentlichen Rechts

Inventor： Weizhou YE ,  Tobias GÖTZ ,  Nejila PARSPOUR

IPC: H02J50/12 ,  H02J50/40 ,  H02J50/80

Abstract: A device for contactless inductive energy transmission having a first side and a second side is proposed, wherein the device comprises an energy transmission coil and a synchronisation coil, in each case, on the first side and on the second side. The energy transmission coils are in each case configured for inductive transmission and for receiving of energy, while the synchronisation coils are in each case configured for inductive transmission and for receiving a synchronisation signal, such that the first side and the second side are configured as a transmission side for contactless transmission of energy to be transmitted, and as a receiving side for contactless receiving of transmitted energy.