Patents by Inventor Jochen Kuehner
Jochen Kuehner 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).
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Patent number: 10589414Abstract: A handheld power tool including at least one drive unit, includes at least one oscillating excitation actuator for the oscillating drive of an associated insertion tool and includes an electronics unit for the controlled energy supply of the drive unit, the electronics unit including at least one inverter, one transformer, and one measuring circuit, the inverter being configured to generate a primary-side transformer voltage and a primary-side transformer current of the transformer, the transformer being configured to transform the primary-side transformer voltage and the primary-side transformer current into an application-specific supply voltage and a supply current for the drive unit, and a controller being associated with the measuring circuit, which is configured to generate at least one control signal for the inverter from a predefined setpoint value and a measured value detected by the measuring circuit, the measuring circuit is situated between the inverter and the transformer.Type: GrantFiled: May 8, 2017Date of Patent: March 17, 2020Assignee: Robert Bosch GmbHInventors: Jochen Kuehner, Klaus Kuhnen
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Publication number: 20190337139Abstract: A handheld power tool including at least one drive unit, includes at least one oscillating excitation actuator for the oscillating drive of an associated insertion tool and includes an electronics unit for the controlled energy supply of the drive unit, the electronics unit including at least one inverter, one transformer, and one measuring circuit, the inverter being configured to generate a primary-side transformer voltage and a primary-side transformer current of the transformer, the transformer being configured to transform the primary-side transformer voltage and the primary-side transformer current into an application-specific supply voltage and a supply current for the drive unit, and a controller being associated with the measuring circuit, which is configured to generate at least one control signal for the inverter from a predefined setpoint value and a measured value detected by the measuring circuit, the measuring circuit is situated between the inverter and the transformer.Type: ApplicationFiled: May 8, 2017Publication date: November 7, 2019Inventors: Jochen Kuehner, Klaus Kuhnen
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Patent number: 10236676Abstract: The invention is a pulse-controlled inverter with one or more semiconductor switches and freewheeling diodes arranged in parallel to each semiconductor switch. The semiconductor switches are triggered only when the current does not flow through a freewheeling diode that is arranged in parallel to the semiconductor switch. This allows the number of triggering processes for the semiconductor switch to be reduced. The reduced number of triggering processes for the semiconductor switches results in lower power losses and an increased service life of the entire system.Type: GrantFiled: September 18, 2015Date of Patent: March 19, 2019Assignee: Robert Bosch GmbHInventors: Gunther Goetting, Kay Hindorf, Mark Damson, Thomas Wiecha, Daniel Raichle, Jochen Kuehner
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Publication number: 20170310244Abstract: The present invention provides a pulse-controlled inverter comprising one or multiple semiconductor switches and freewheeling diodes arranged in parallel to each semiconductor switch. The semiconductor switches are triggered only when the current does not flow through a freewheeling diode which is arranged in parallel to the semiconductor switch. This allows the number of triggering processes for the semiconductor switch to be reduced. The reduced number of triggering processes for the semiconductor switches results in lower power losses and an increased service life of the entire system.Type: ApplicationFiled: September 18, 2015Publication date: October 26, 2017Inventors: Gunther Goetting, Kay Hindorf, Mark Damson, Thomas Wiecha, Daniel Raichle, Jochen Kuehner
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Patent number: 9768606Abstract: A method for discharging a high-voltage system in a vehicle, the high-voltage system having at least one energy store and a plurality of high-voltage consumers. To discharge the high-voltage system, the electrical energy store is first separated from the rest of the vehicle electrical system, and at least one of the high-voltage consumers is switched on, so that the charge stored within the system drains via the consumers.Type: GrantFiled: December 30, 2008Date of Patent: September 19, 2017Assignee: ROBERT BOSCH GMBHInventors: Jochen Kuehner, Martin Trunk, Arnold Winter, Dragan Mikulec
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Publication number: 20150377173Abstract: A method for controlling an injection operation of a magnetic injector of an internal combustion engine, the magnetic injector having a coil, the coil being impinged upon by a first current to open the magnetic injector, the coil being short-circuited to hold the magnetic injector open, and the coil being impinged upon by a second current to close the magnetic injector, the second current being directed oppositely to the first current.Type: ApplicationFiled: January 14, 2014Publication date: December 31, 2015Inventors: Verena TRITSCH, Olaf Ohlhafer, Felix Landhaeusser, Peter Boehland, Bernd Stuke, Jochen Kuehner, Walter Fuchs
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Patent number: 9024697Abstract: The invention relates to a method for operating control equipment (1) of a resonance circuit (2), wherein the control equipment (1) comprises at least two circuit elements (8, 9) connected in series, in particular each comprising a recovery diode (13, 14) connected in parallel, between which a connection (6) of the resonance circuit (2) is connected. According to the invention, the circuit elements (8, 9) are actuated as a function of the voltage detected at the connection (6). The invention further relates to control equipment (1) of a resonance circuit (2).Type: GrantFiled: June 15, 2011Date of Patent: May 5, 2015Assignee: Robert Bosch GmbHInventor: Jochen Kuehner
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Publication number: 20130093528Abstract: The invention relates to a method for operating control equipment (1) of a resonance circuit (2), wherein the control equipment (1) comprises at least two circuit elements (8, 9) connected in series, in particular each comprising a recovery diode (13, 14) connected in parallel, between which a connection (6) of the resonance circuit (2) is connected. According to the invention, the circuit elements (8, 9) are actuated as a function of the voltage detected at the connection (6). The invention further relates to control equipment (1) of a resonance circuit (2).Type: ApplicationFiled: June 15, 2011Publication date: April 18, 2013Applicant: ROBERT BOSCH GMBHInventor: Jochen Kuehner
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Patent number: 8369049Abstract: A method for shutting down an electric machine having a pulse-controlled inverter in the event of a malfunction. Undesirable side effects during shut-down of the electric machine may be minimized and the regular machine operation may be maximized when the electric machine is first switched to a disconnect mode in which all switches of the pulse-controlled inverter are open and subsequently is switched to a short-circuit mode in which the switches connected to the high potential are open and the switches connected to the low potential are closed.Type: GrantFiled: January 19, 2007Date of Patent: February 5, 2013Assignee: Robert Bosch GmbHInventors: Jochen Kuehner, Martin Trunk, Klaus Rechberger, Manfred Ackermann, Manfred Stahl
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Publication number: 20110249478Abstract: A power output stage for a pulse-controlled inverter includes a half-bridge. The half-bridge has a control terminal and power terminals. The power terminals include a terminal for a positive supply voltage, a terminal for a negative supply voltage and a phase voltage terminal. In particular, the power output stage has two half-controlled half-bridges, whose power terminals are connected in parallel, and whose control terminals are not connected to one another.Type: ApplicationFiled: September 18, 2009Publication date: October 13, 2011Inventors: Jochen Kuehner, Albrecht Schwarz
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Publication number: 20110093148Abstract: The invention relates to a method for discharging a high voltage network (2) in a vehicle, the high voltage network (2) comprising at least one energy store (1) and a plurality of high voltage consumers (3). For discharging the high voltage network (2), the electrical energy store (1) is first separated from the remaining on-board power supply system (2) and at least one of the high voltage consumers (3) is switched on so that the charge stored in the network is discharged via the consumers (3).Type: ApplicationFiled: December 30, 2008Publication date: April 21, 2011Applicant: ROBERT BOSCH GMBHInventors: Jochen Kuehner, Martin Trunk, Arnold Winter, Dragan Mikulec
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Publication number: 20110057627Abstract: A device for discharging an electric network or a capacitive component includes a switchable resistor. The discharge circuit has a particularly low power loss and operates reliably when the switchable resistor includes a PTC resistor and a switch whose control terminal is powered by the network voltage.Type: ApplicationFiled: December 30, 2008Publication date: March 10, 2011Inventor: Jochen Kuehner
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Publication number: 20100202089Abstract: A method for shutting down an electric machine having a pulse-controlled inverter in the event of a malfunction. Undesirable side effects during shut-down of the electric machine may be minimized and the regular machine operation may be maximized when the electric machine is first switched to a disconnect mode in which all switches of the pulse-controlled inverter are open and subsequently is switched to a short-circuit mode in which the switches connected to the high potential are open and the switches connected to the low potential are closed.Type: ApplicationFiled: January 19, 2007Publication date: August 12, 2010Inventors: Jochen Kuehner, Trunk Martin, Klaus Rechberger, Manfred Ackermann, Manfred Stahl
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Patent number: 7459954Abstract: 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: GrantFiled: February 7, 2005Date of Patent: December 2, 2008Assignee: Robert Bosch GmbHInventors: Jochen Kuehner, Robert Plikat, Stefan Mueller, Stephan Rees, Armin Ruf
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Publication number: 20080001586Abstract: 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: ApplicationFiled: February 7, 2005Publication date: January 3, 2008Inventors: Jochen Kuehner, Robert Plikat, Stefan Mueller, Stephan Rees, Armin Ruf
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Patent number: 7256563Abstract: A method and a device for providing field-oriented regulation of a synchronous machine excited by a permanent magnet, in which a direct-axis voltage component and a quadrature-axis voltage component of the control voltage for the synchronous machine are determined from a quadrature-axis current component setpoint value thus determined and from rotational speed information using a stationary machine model in a decoupling network. These voltage components are converted into triggering pulses for the synchronous machine. The regulating system does not require any information regarding the phase currents of the polyphase system.Type: GrantFiled: February 10, 2003Date of Patent: August 14, 2007Assignee: Robert BoschInventors: Jochen Kuehner, Klaus Rechberger
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Publication number: 20050231150Abstract: A method and a device for providing field-oriented regulation of a synchronous machine excited by a permanent magnet, in which a direct-axis voltage component and a quadrature-axis voltage component of the control voltage for the synchronous machine are determined from a quadrature-axis current component setpoint value thus determined and from rotational speed information using a stationary machine model in a decoupling network. These voltage components are converted into triggering pulses for the synchronous machine. The regulating system does not require any information regarding the phase currents of the polyphase system.Type: ApplicationFiled: February 10, 2003Publication date: October 20, 2005Inventors: Jochen Kuehner, Klaus Rechberger
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Patent number: 6888336Abstract: An inverter for an electric machine is specified that includes a plurality of switching elements, in particular six, which are positioned in a bridge circuit and produce a connection between the electric machine and a battery. The switching elements built into the low-side branch of the inverter are ones that are conductive without a control voltage present, i.e., normally-on switching elements. That ensures that if the supply voltage is absent and the electric machine is rotating the windings of the electric machine are short circuited and no overvoltages are able to occur. In normal operation the inverter is operated like a conventional inverter, by clocked actuation, but with reversed actuation of the control electrodes, i.e., with control voltage for non-conductive time phases and without control voltage in conductive phases.Type: GrantFiled: February 6, 2003Date of Patent: May 3, 2005Assignee: Robert Bosch GmbHInventors: Jochen Kuehner, Robert Plikat, Klaus Rechberger, Jochen Ruopp
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Publication number: 20040222766Abstract: An inverter for an electric machine is specified that includes a plurality of switching elements, in particular six, which are positioned in a bridge circuit and produce a connection between the electric machine and a battery. The switching elements built into the low-side branch of the inverter are ones that are conductive without a control voltage present, i.e., normally-on switching elements. That ensures that if the supply voltage is absent and the electric machine is rotating the windings of the electric machine are short circuited and no overvoltages are able to occur. In normal operation the inverter is operated like a conventional inverter, by clocked actuation, but with reversed actuation of the control electrodes, i.e., with control voltage for non-conductive time phases and without control voltage in conductive phases.Type: ApplicationFiled: June 15, 2004Publication date: November 11, 2004Inventors: Jochen Kuehner, Robert Plikat, Klaus Rechberger, Jochen Ruopp
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Patent number: 6794835Abstract: A circuit arrangement for an electrical machine which is connected with at least one phase terminal of the electrical machine, has at least one passive charge pump connectable directly with phase windings of the electrical machine and having another terminal connected through further electronic means with an input/output, at which a switching on/switching off signal for a current supply is produced.Type: GrantFiled: March 31, 2003Date of Patent: September 21, 2004Assignee: Robert Bosch GmbHInventors: Jochen Kuehner, Klaus Beulich