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公开(公告)号：US20200052509A1
公开(公告)日：2020-02-13
申请号：US16057051
申请日：2018-08-07
Applicant: GM Global Technology Operations LLC
Inventor： Yue Fan , Konking Wang
Abstract: An electrical system includes a high-voltage bus connected to a rechargeable energy storage system (RESS) and a high-voltage component connected to the RESS via the voltage bus. The component defines a service opening spanned by a removable cover. The electrical system may include a fastener connecting the cover to the component, as well as a battery disconnect unit (BDU) having a high-voltage switch device connecting the RESS to the high-voltage bus. The switch device closes responsive to a low-voltage drive current to connect the RESS to the high-voltage bus. A drive circuit conducts the current to the switch device. An electrical connector has multiple connector pieces collectively forming a switch in the drive circuit. Disconnection of the pieces from each other opens the switch to interrupt the drive current and cause the high-voltage switch device to open, which disconnects the RESS from the high-voltage bus.
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公开(公告)号：US11791641B2
公开(公告)日：2023-10-17
申请号：US17528727
申请日：2021-11-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Konking Wang , Emil Francu , Li-Pen J. Ho , Kevin J. Robinet
CPC classification number: H02J7/00308 , B60L50/64 , H02J7/0024 , H02J7/1423 , B60L2240/547
Abstract: A protection system for a high-voltage component includes a switching circuit and a protection controller. The switching circuit changes a variable arrangement of multiple battery packs between a parallel arrangement and a series arrangement. The protection controller commands the switching circuit into the series arrangement in response to a recharging session, commands a current flow in the recharging session, measures a measured voltage between an input node and a floating chassis ground of the high-voltage component, advances a timer while the measured voltage indicates a presence of an improper voltage, and cancels the recharging session in response to the presence of the improper voltage for greater than an exposure time. The recharging session provides a direct-current fast-charging voltage to battery packs in the series arrangement, and is greater than the battery voltage.
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公开(公告)号：US10554057B1
公开(公告)日：2020-02-04
申请号：US16183051
申请日：2018-11-07
Applicant: GM Global Technology Operations LLC
Inventor： Konking Wang , Kris Sevel , Steven V. Wybo
Abstract: A discharge control system of a vehicle includes a traction power inverter module (TPIM) configured to convert a first direct current (DC) voltage output by a first battery to alternating current (AC) power and apply the AC power to an electric motor. An accessory power module (APM) is configured to convert the first DC voltage into a second DC voltage of a second battery. A voltage calculation module is configured to, when the first DC voltage is less than an operation threshold voltage of the APM, determine the second DC voltage based on a function of the first DC voltage and the operation threshold voltage. A diagnostic module is configured to indicate whether a discharge fault is present. A discharge control module is configured to, when the discharge fault is present, based the first DC voltage and the second DC voltage, selectively control operation of the TPIM and the APM.
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公开(公告)号：US20180154783A1
公开(公告)日：2018-06-07
申请号：US15367834
申请日：2016-12-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Konking Wang , Brendan M. Conlon , Leo F. Schwab , Alexander M. Bilinski , Stephen G. Heien
CPC classification number: B60L11/1809 , B60H1/00878 , B60L11/14 , B60L11/1877 , B60L2240/34 , B60Y2300/91 , B60Y2400/112 , H01R13/10 , H02J7/0013 , H02J7/0045
Abstract: A system includes a rechargeable energy storage system (RESS) having an enclosure, battery cells, contactors, a first pair of high-voltage interlock (HVIL) ports, and female blind-mate electrical sockets selectively connected to the battery cells via the contactors. The battery cells and contactors are within the RESS enclosure. The system includes a high-power distribution module (HPDM) having another enclosure, male blind-mate electrical pins, a second pair of HVIL ports engagable with the first pair, ring-terminal connections connected to the blind-mate electrical pins and connectable to high-current components, and HV280 electrical connectors electrically connected to one or more of the male blind-mate electrical pins. The male blind-mate electrical pins insert directly into and engage with the female blind-mate electrical sockets of the RESS enclosure. A vehicle includes the system, a transmission, and an electric machine.
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公开(公告)号：US20230155400A1
公开(公告)日：2023-05-18
申请号：US17528727
申请日：2021-11-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Konking Wang , Emil Francu , Li-Pen J. Ho , Kevin J. Robinet
CPC classification number: H02J7/00308 , H02J7/1423 , H02J7/0024 , B60L50/64 , B60L2240/547
Abstract: A protection system for a high-voltage component includes a switching circuit and a protection controller. The switching circuit changes a variable arrangement of multiple battery packs between a parallel arrangement and a series arrangement. The protection controller commands the switching circuit into the series arrangement in response to a recharging session, commands a current flow in the recharging session, measures a measured voltage between an input node and a floating chassis ground of the high-voltage component, advances a timer while the measured voltage indicates a presence of an improper voltage, and cancels the recharging session in response to the presence of the improper voltage for greater than an exposure time. The recharging session provides a direct-current fast-charging voltage to battery packs in the series arrangement, and is greater than the battery voltage.
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Patent Agency Ranking
公开(公告)号：US10005366B1
公开(公告)日：2018-06-26
申请号：US15367834
申请日：2016-12-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Konking Wang , Brendan M. Conlon , Leo F. Schwab , Alexander M. Bilinski , Stephen G. Heien
Abstract: A system includes a rechargeable energy storage system (RESS) having an enclosure, battery cells, contactors, a first pair of high-voltage interlock (HVIL) ports, and female blind-mate electrical sockets selectively connected to the battery cells via the contactors. The battery cells and contactors are within the RESS enclosure. The system includes a high-power distribution module (HPDM) having another enclosure, male blind-mate electrical pins, a second pair of HVIL ports engagable with the first pair, ring-terminal connections connected to the blind-mate electrical pins and connectable to high-current components, and HV280 electrical connectors electrically connected to one or more of the male blind-mate electrical pins. The male blind-mate electrical pins insert directly into and engage with the female blind-mate electrical sockets of the RESS enclosure. A vehicle includes the system, a transmission, and an electric machine.
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公开(公告)号：US20180029479A1
公开(公告)日：2018-02-01
申请号：US15220721
申请日：2016-07-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Konking Wang , Steven V. Wybo , Kris S. Sevel , Charles J. Swan
CPC classification number: B60L11/02 , B60L11/1809 , H02M1/32 , H02M3/33507 , H02M3/33584 , H02M2001/322
Abstract: A topology for electric power distribution in a vehicle includes a high-voltage bus connected to a DC-DC electric power converter that is connected to a low-voltage DC load. The DC-DC electric power converter includes a high-voltage switching circuit, a transformer, and a low-voltage rectifier. The high-voltage switching circuit includes first and second switches arranged in series between positive and negative legs of the high-voltage electric power bus at a first node that connects to a leg of an inductor of the transformer. A controller receives a command to discharge the high-voltage electric power bus, and in response, controls a first gate circuit to operate a first switch in a linear mode, and controls a second gate circuit to operate a second switch in a pulsewidth-modulated mode. A duty cycle for the pulsewidth-modulated operation of the second switch is determined based upon the magnitude of electric current.
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公开(公告)号：US11275107B2
公开(公告)日：2022-03-15
申请号：US16709501
申请日：2019-12-10
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Kris Sevel , Yue Fan , Emil Francu , Konking Wang
Abstract: Dynamically monitoring of an electrically-isolated power bus for a DC power system is described, and includes dynamically monitoring voltage and current on the power bus to determine a variation in the voltage on the power bus. When the variation in the voltage on the power bus is less than a threshold, an active positive isolation resistance term and an active negative isolation resistance term are determined. A first voltage balance term is determined based upon a ratio of the active positive isolation resistance term and the active negative isolation resistance term. A dynamic positive isolation resistance term and a dynamic negative isolation resistance term are determined based upon the active negative isolation resistance term. A fault associated with the power bus is determined based upon the dynamic positive isolation resistance term and the dynamic negative isolation resistance term.
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公开(公告)号：US10923926B2
公开(公告)日：2021-02-16
申请号：US16057051
申请日：2018-08-07
Applicant: GM Global Technology Operations LLC
Inventor： Yue Fan , Konking Wang
Abstract: An electrical system includes a high-voltage bus connected to a rechargeable energy storage system (RESS) and a high-voltage component connected to the RESS via the voltage bus. The component defines a service opening spanned by a removable cover. The electrical system may include a fastener connecting the cover to the component, as well as a battery disconnect unit (BDU) having a high-voltage switch device connecting the RESS to the high-voltage bus. The switch device closes responsive to a low-voltage drive current to connect the RESS to the high-voltage bus. A drive circuit conducts the current to the switch device. An electrical connector has multiple connector pieces collectively forming a switch in the drive circuit. Disconnection of the pieces from each other opens the switch to interrupt the drive current and cause the high-voltage switch device to open, which disconnects the RESS from the high-voltage bus.
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公开(公告)号：US10160332B2
公开(公告)日：2018-12-25
申请号：US15220721
申请日：2016-07-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Konking Wang , Steven V. Wybo , Kris S. Sevel , Charles J. Swan
Abstract: A topology for electric power distribution in a vehicle includes a high-voltage bus connected to a DC-DC electric power converter that is connected to a low-voltage DC load. The DC-DC electric power converter includes a high-voltage switching circuit, a transformer, and a low-voltage rectifier. The high-voltage switching circuit includes first and second switches arranged in series between positive and negative legs of the high-voltage electric power bus at a first node that connects to a leg of an inductor of the transformer. A controller receives a command to discharge the high-voltage electric power bus, and in response, controls a first gate circuit to operate a first switch in a linear mode, and controls a second gate circuit to operate a second switch in a pulsewidth-modulated mode. A duty cycle for the pulsewidth-modulated operation of the second switch is determined based upon the magnitude of electric current.
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