Patents by Inventor Torbjoern Larsson
Torbjoern Larsson 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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Publication number: 20230387795Abstract: A device enabling dedicated DCDC conversion for key-off electrical loads is described. According to one or more embodiments, a device is provided comprising a battery, one or more main conversion units coupled to the battery, and one or more dedicated key-off conversion units coupled to the battery and to one or more key-off electrical modules.Type: ApplicationFiled: May 31, 2022Publication date: November 30, 2023Inventors: Erik Örnberg, Sofia Lorensson, Stefan Sebastian Larqvist, Erik Jagre, Linas Brusokas, Torbjörn Larsson, Örjan Spjuth
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Publication number: 20230280384Abstract: Electrical circuits, systems, methods, and/or computer program products that can facilitate isolation resistance monitoring for high voltage buses are addressed. In one example, a system can comprise an electrical circuit further comprising one or more resistors and a voltage meter which measures voltage, such that the voltage measurement assists with monitoring isolation resistance, simultaneously, for a smartcell system of an electric vehicle, and for a direct current (DC) charging source external to the electric vehicle.Type: ApplicationFiled: March 7, 2022Publication date: September 7, 2023Inventors: Fatih Al, Torbjörn Larsson
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Patent number: 10071632Abstract: An electrical system for a vehicle having an internal combustion engine provided with a start/stop system includes a primary battery connectible to an engine starter motor, an alternator and an electrical load in parallel with one another and selectively connectible in parallel with the primary battery via a first switch, and a third source of electrical energy selectively connectible in parallel with the alternator via a second switch. A DC/DC converter may be arranged in parallel with the alternator for selectively charging the third source of electrical energy via the second switch. A secondary battery may be arranged in parallel with the alternator.Type: GrantFiled: August 23, 2012Date of Patent: September 11, 2018Assignee: Volvo Car CorporationInventors: Torbjoern Larsson, Patrik Larsson, Daniel Midholm, Fredrik Ulmhage
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Patent number: 10036360Abstract: An electrical system for a vehicle having an internal combustion engine with start/stop capability includes a primary battery connectible to an engine starter motor; a secondary battery, an alternator, and an electrical load in parallel with one another and selectively connectible in parallel with the primary battery by a charge switch; in parallel with the secondary battery, a DC/DC converter in series with a third electrical energy source; and a bypass switch operable to selectively bypass the DC/DC converter. The bypass switch allows for selective bypassing the DC/DC converter and charging/discharging of the third electrical energy source during start/stop operation, to ensure a sufficient voltage level over the additional vehicle electrical loads when the internal combustion engine and consequently the alternator are not running.Type: GrantFiled: June 29, 2017Date of Patent: July 31, 2018Assignee: Volvo Car CorporationInventors: Oerjan Spjuth, Torbjoern Larsson, Daniel Midholm, Fredrik Ulmhage
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Publication number: 20170298891Abstract: An electrical system for a vehicle having an internal combustion engine with start/stop capability includes a primary battery connectible to an engine starter motor; a secondary battery, an alternator, and an electrical load in parallel with one another and selectively connectible in parallel with the primary battery by a charge switch; in parallel with the secondary battery, a DC/DC converter in series with a third electrical energy source; and a bypass switch operable to selectively bypass the DC/DC converter. The bypass switch allows for selective bypassing the DC/DC converter and charging/discharging of the third electrical energy source during start/stop operation, to ensure a sufficient voltage level over the additional vehicle electrical loads when the internal combustion engine and consequently the alternator are not running.Type: ApplicationFiled: June 29, 2017Publication date: October 19, 2017Applicant: Volvo Car CorporationInventors: Oerjan SPJUTH, Torbjoern LARSSON, Daniel MIDHOLM, Fredrik ULMHAGE
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Patent number: 9752547Abstract: An electrical system for a vehicle having an internal combustion engine with start/stop capability includes a primary battery connectible to an engine starter motor; a secondary battery, an alternator, and an electrical load in parallel with one another and selectively connectible in parallel with the primary battery by a charge switch; in parallel with the secondary battery, a DC/DC converter in series with a third electrical energy source; and a bypass switch operable to selectively bypass the DC/DC converter. The bypass switch allows for selective bypassing the DC/DC converter and charging/discharging of the third electrical energy source during start/stop operation, to ensure a sufficient voltage level over the additional vehicle electrical loads when the internal combustion engine and consequently the alternator are not running.Type: GrantFiled: June 19, 2012Date of Patent: September 5, 2017Assignee: Volvo Car CorporationInventors: Oerjan Spjuth, Torbjoern Larsson, Daniel Midholm, Fredrik Ulmhage
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Patent number: 9272625Abstract: An electrical power supply system for powering an electric load of a vehicle includes a main battery, a support battery and a battery control module. The battery control module includes a first terminal for connection to the main battery, a second terminal for connection to the support battery and a third terminal for connecting to the electric load. A switch is arranged between said second terminal and said third terminal. The battery control module is arranged to connect the support battery to the load by turning the switch conducting in case the voltage at the third terminal drops below a predetermined voltage. The system provides the automatic activation of a support energy source when the output voltage falls below a specified voltage threshold. The support battery supports the main battery when needed or acts as a redundant power source.Type: GrantFiled: December 20, 2012Date of Patent: March 1, 2016Assignee: Volvo Car CorporationInventors: Mikael Sonesson, Torbjoern Larsson, Jonas Dahlloef, Peter Gunberg, Daniel Midholm
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Publication number: 20130229049Abstract: An electrical system for a vehicle having an internal combustion engine provided with a start/stop system includes a primary battery connectible to an engine starter motor, an alternator and an electrical load in parallel with one another and selectively connectible in parallel with the primary battery via a first switch, and a third source of electrical energy selectively connectible in parallel with the alternator via a second switch. A DC/DC converter may be arranged in parallel with the alternator for selectively charging the third source of electrical energy via the second switch. A secondary battery may be arranged in parallel with the alternator.Type: ApplicationFiled: August 23, 2012Publication date: September 5, 2013Applicant: VOLVO CAR CORPORATIONInventors: Torbjoern Larsson, Patrik Larsson, Daniel Midholm, Fredrik Ulmhage
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Publication number: 20120330538Abstract: An electrical system for a vehicle having an internal combustion engine with start/stop capability includes a primary battery connectible to an engine starter motor; a secondary battery, an alternator, and an electrical load in parallel with one another and selectively connectible in parallel with the primary battery by a charge switch; in parallel with the secondary battery, a DC/DC converter in series with a third electrical energy source; and a bypass switch operable to selectively bypass the DC/DC converter. The bypass switch allows for selective bypassing the DC/DC converter and charging/discharging of the third electrical energy source during start/stop operation, to ensure a sufficient voltage level over the additional vehicle electrical loads when the internal combustion engine and consequently the alternator are not running.Type: ApplicationFiled: June 19, 2012Publication date: December 27, 2012Applicant: VOLVO CAR CORPORATIONInventors: Oerjan Spjuth, Torbjoern Larsson, Daniel Midholm, Fredrik Ulmhage