Patents by Inventor Stephan Rees

Stephan Rees has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9252619
    Abstract: A method for the resistive charge equalization of battery cells of a battery, includes, in a first step, ascertaining the state of charge of the battery cells ascertained and correlating the battery cells of which the state of charge exceeds a predefined value with a first mask, which permits charge equalization only for a predefined portion of all the battery cells, wherein, then, charge equalization is performed. In a second step, the state of charge of the battery cells is optionally ascertained again and the battery cells of which the state of charge exceeds a predefined value are correlated with a second mask, which differs from the first mask, and wherein, then, charge equalization is performed. As a result, the heat generated during charge equalization is distributed in space and time such that no local overheating of or damage to components occurs and no overtemperature disconnection of the battery occurs.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: February 2, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Matthias Riedmann, Stephan Rees, Ulrich Zimmermann
  • Publication number: 20130257322
    Abstract: A method for the resistive charge equalization of battery cells of a battery, includes, in a first step, ascertaining the state of charge of the battery cells ascertained and correlating the battery cells of which the state of charge exceeds a predefined value with a first mask, which permits charge equalization only for a predefined portion of all the battery cells, wherein, then, charge equalization is performed. In a second step, the state of charge of the battery cells is optionally ascertained again and the battery cells of which the state of charge exceeds a predefined value are correlated with a second mask, which differs from the first mask, and wherein, then, charge equalization is performed. As a result, the heat generated during charge equalization is distributed in space and time such that no local overheating of or damage to components occurs and no overtemperature disconnection of the battery occurs.
    Type: Application
    Filed: April 3, 2013
    Publication date: October 3, 2013
    Applicants: Samsung SDI Co., Ltd., Robert Bosch GmbH
    Inventors: Matthias Riedmann, Stephan Rees, Ulrich Zimmermann
  • Patent number: 7616047
    Abstract: A transistor arrangement has first and second terminals and a control terminal which sets a current flow between the first and second terminals, and a signal conditioning device which applies a transistor control voltage to the control terminal in a manner dependent on a differential voltage present between the first and second terminals, and a driving apparatus is assigned to the signal conditioning device and switches the latter between at least two operating modes.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: November 10, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Stephan Rees, Armin Ruf, Ulrich Ammann
  • Patent number: 7459954
    Abstract: A control circuit for controlling an electronic circuit, which has a current path through a semiconductor switch and a line; when the semiconductor switch is switched, the inductance of the line and/or of a component in the current path producing an excess voltage between a first and a second current-carrying terminal of the semiconductor switch; the control circuit having a controllable current source for charging or discharging a charge-controlled gate of the semiconductor switch with the aid of a control current, as well as a control unit; the control unit controlling the current source in such a manner, that in the case of a switching operation, the terminal voltage across the current-carrying terminals of the semiconductor switch does not exceed a predefined setpoint terminal voltage.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: December 2, 2008
    Assignee: Robert Bosch GmbH
    Inventors: Jochen Kuehner, Robert Plikat, Stefan Mueller, Stephan Rees, Armin Ruf
  • Patent number: 7328099
    Abstract: A device for recording the battery voltage in engine-control devices. The device has a first input terminal at which the battery voltage derived from the positive pole of the battery is supplied to the engine-control device. Moreover, it includes a first analog-digital converter and a first low-pass situated between the first input terminal and the first analog-digital converter. In addition, a first semiconductor switch is provided between the first input terminal and the analog-digital converter, which is conductive in the switched-on operation of the engine-control device and blocks in the switched-off operation of the engine-control device.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: February 5, 2008
    Assignee: Robert Bosch GmbH
    Inventor: Stephan Rees
  • Publication number: 20080001586
    Abstract: A control circuit for controlling an electronic circuit, which has a current path through a semiconductor switch and a line; when the semiconductor switch is switched, the inductance of the line and/or of a component in the current path producing an excess voltage between a first and a second current-carrying terminal of the semiconductor switch; the control circuit having a controllable current source for charging or discharging a charge-controlled gate of the semiconductor switch with the aid of a control current, as well as a control unit; the control unit controlling the current source in such a manner, that in the case of a switching operation, the terminal voltage across the current-carrying terminals of the semiconductor switch does not exceed a predefined setpoint terminal voltage.
    Type: Application
    Filed: February 7, 2005
    Publication date: January 3, 2008
    Inventors: Jochen Kuehner, Robert Plikat, Stefan Mueller, Stephan Rees, Armin Ruf
  • Publication number: 20070182459
    Abstract: The invention relates to a transistor arrangement (1) comprising a transistor (10), which is provided with first and second connections (12, 14) and a control connection (16) for controlling a current flow (iD) between said first and second connections (12, 14), a signal processing device (22) exposed to the transistor control voltage (uDS) for admitting said control connection (16) according to a differential voltage (uDS) supplied between the first and second connections (12, 14) and a control device (23) which is associated with the signal processing device (22) and switches it between at least two operating modes. An inverter signal (uWR) causes, for an uWR value=0, an effect in such a way that the transistor (10) is used in the form of a conductor for uDS<0 and is locked for uDS>0. For uWR=uWR, said transistor (10) is permanently conductive.
    Type: Application
    Filed: January 27, 2006
    Publication date: August 9, 2007
    Applicant: ROBERT BOSCH GMBH
    Inventors: Stephan Rees, Armin Ruf, Ulrich Ammann
  • Publication number: 20060279261
    Abstract: A device for recording the battery voltage in engine-control devices. The device has a first input terminal at which the battery voltage derived from the positive pole of the battery is supplied to the engine-control device. Moreover, it includes a first analog-digital converter and a first low-pass situated between the first input terminal and the first analog-digital converter. In addition, a first semiconductor switch is provided between the first input terminal and the analog-digital converter, which is conductive in the switched-on operation of the engine-control device and blocks in the switched-off operation of the engine-control device.
    Type: Application
    Filed: May 22, 2006
    Publication date: December 14, 2006
    Inventor: Stephan Rees
  • Patent number: 6373705
    Abstract: In order to improve heat dissipation and to reduce parasitic inductivity in an electronic semiconductor module, which has a carrier substrate having an electrically insulating layer, a metal layer in which printed conductors are formed via structuring and which is arranged on the upper side of the insulating layer, and a metal cooling body arranged on the lower side of the insulating layer, and at least one semiconductor component arranged on the carrier substrate, the electrically insulating layer has at least one notch, and at least one terminal face provided on the upper side of the semiconductor component facing away from the carrier substrate is electrically connected to a contact element which is directly connected to the metal cooling body via the notch.
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: April 16, 2002
    Assignee: Robert Bosch GmbH
    Inventors: Gerhard Koelle, Wolfgang Jacob, Harald Tschentscher, Stephan Rees