公开(公告)号：US20220329061A1

公开(公告)日：2022-10-13

申请号：US17638967

申请日：2020-09-03

Applicant: Scania CV AB

Inventor： Georgios PAPADOPOULOS ,  Carl TENGSTEDT ,  Jens GUSTAVSSON ,  Christer ROOS ,  Hans-Peter NEE

IPC: H02H7/22 ,  H02G3/08 ,  H01M50/583 ,  H01M50/296 ,  B60R16/023 ,  B60R16/033

Abstract: An electronic circuit breaker for a vehicle, comprising: an input configured to be connected to a DC power supply; an output configured to be connected to a load; said input connected to said output via a semiconductor switch with a linear region of operation, and a saturated region of operation, said semiconductor switch comprises a switch control input; a switch driver configured to control the semiconductor switch and comprising a switch control output; wherein said switch control output is connected to the switch control input via a pre-charge circuit comprising a turn-“ON” branch which is configured to cause the semiconductor switch to operate in the linear region of operation during turn-“ON”; and a turn-“OFF” branch which is configured to cause the switch to turn-“OFF”.

公开(公告)号：US20240217516A1

公开(公告)日：2024-07-04

申请号：US18567455

申请日：2022-06-02

Applicant: Scania CV AB

Inventor： Joakim SOMMANSSON ,  Erik HÖCKERDAL ,  Jens GUSTAVSSON ,  Anders LARSSON ,  Oskar LEUFVEN ,  Christer ROOS ,  Daniel JOHNSSON

IPC: B60W30/18 ,  B60K17/08 ,  B60L7/08 ,  B60L15/00 ,  B60W10/196 ,  B60W10/30 ,  B60W30/188 ,  B60L7/22

CPC classification number: B60W30/18109 ,  B60K17/08 ,  B60L7/08 ,  B60L15/007 ,  B60W10/196 ,  B60W10/30 ,  B60W30/1886 ,  B60L7/22

Abstract: A system for braking a vehicle is provided. The system comprises a powertrain comprising an electric machine arranged to propel the vehicle and a transmission arranged to transfer power between the electric machine and the driving wheels of the vehicle. The system further comprises a resistor device arranged to dissipate electric energy generated by the electric machine during braking of the vehicle, and an airflow generating device arranged to generate an airflow over the resistor device. The airflow generating device is arranged to be mechanically driven by the powertrain so as to generate said airflow. By (mechanically) driving the airflow generating device by means of the powertrain, the airflow generating device does not need its own motor, thereby making the system less complex. Further, the driving of the airflow generating device by means of the powertrain will consume energy itself, contributing to braking the vehicle.

公开(公告)号：US20230322086A1

公开(公告)日：2023-10-12

申请号：US18025201

申请日：2021-08-27

Applicant: Scania CV AB

Inventor： Joakim SOMMANSSON ,  Jens GUSTAVSSON ,  Oscar HÄLLMAN

IPC: B60L3/00 ,  H02J7/34 ,  H02J7/00 ,  B60R16/023

CPC classification number: B60L3/0046 ,  H02J7/345 ,  H02J7/00032 ,  B60R16/023

Abstract: A method for discharging a capacitor. An active discharge circuit is connected in parallel with the capacitor. An interface provides a signal connection between a message-based communication system and the active discharge circuit. The interface comprises at least one input for receiving messages from the message-based communication system. The interface comprises a wake-up functionality. The at least one input comprises an input for the wake-up functionality. The method comprises: receiving at the input for the wake-up functionality a disable discharge command message of said messages for the disabling of the discharge of the capacitor, wherein upon cessation of the disable discharge command message the discharge of the capacitor is enabled. An apparatus for the discharge of a capacitor, wherein the apparatus comprises the interface and the active discharge circuit connectable in parallel with the capacitor.

公开(公告)号：US20220340020A1

公开(公告)日：2022-10-27

申请号：US17638963

申请日：2020-09-03

Applicant: Scania CV AB

Inventor： Georgios PAPADOPOULOS ,  Carl TENGSTEDT ,  Jens GUSTAVSSON ,  Christer ROOS ,  Hans-Peter NEE

IPC: B60L50/64 ,  B60L3/04 ,  H02H3/087

Abstract: An electronic circuit breaker comprising: an input connected to an electric DC power supply; an output connected to a load; the input connected to the output via a switch, said switch is controlled via a switch control line between an “ON”-state and an “OFF”-state; a switch driver connected to the switch control line, said switch driver configured to control the switch; and a switch protection, a voltage detection branch configured to output a first electric potential indicative of the electrical potential difference between the input and the output; a comparator circuit configured to compare the first electrical potential with a first threshold voltage, said first threshold voltage is indicative of an over-current level flowing through the switch; and a gate controller connected to the switch disable line and configured to disable the switch by connecting the switch control line to a potential which causes the switch to enter the “OFF”-state.

公开(公告)号：US20240242867A1

公开(公告)日：2024-07-18

申请号：US18559837

申请日：2022-05-16

Applicant: Scania CV AB

Inventor： Jens GUSTAVSSON ,  Kurre KÄLLKVIST ,  Joakim SVANTESSON ,  Erik JANSSON

IPC: H01F7/06 ,  F02D41/20 ,  F02M51/06 ,  F16K31/06 ,  H01F7/08 ,  H01F7/16

CPC classification number: H01F7/064 ,  F02D41/20 ,  F02M51/061 ,  F16K31/0675 ,  H01F7/081 ,  H01F7/1607 ,  F02D2041/2051 ,  F02D2041/2058

Abstract: The disclosure proposes a method for controlling discharge of a solenoid valve arranged in a vehicle, wherein the solenoid valve comprises an inductor and a plunger arranged to be moved by the inductor from a hold position to a rest position, whereby the solenoid valve is opened or closed. The method comprises stepwise discharging the inductor by discharging the inductor at a slow decay rate during an operating time period during which a final part of a movement of the plunger from the hold position to the rest position takes place. The method further comprises discharging the inductor at a fast decay rate during at least one other time period, wherein the plunger is stagnant during at least a part of said other time period, wherein the fast decay rate is faster than the slow decay rate.

公开(公告)号：US20220289032A1

公开(公告)日：2022-09-15

申请号：US17638954

申请日：2020-09-03

Applicant: Scania CV AB

Inventor： Georgios PAPADOPOULOS ,  Carl TENGSTEDT ,  Jens GUSTAVSSON ,  Christer ROOS ,  Hans-Peter NEE

IPC: B60L3/00 ,  B60L50/64 ,  H02H3/087

Abstract: A battery junction box, comprising: a first input connected to a first output via a switch circuit, which switch circuit is configured to connect the first input to the first output upon receiving a control signal from a controller; the battery junction box further comprises a second input connected to a second output, via a fuse and a main switch arranged in series. The switch circuit further comprises at least a first branch with a semiconductor switch between the first input and the first output, which semiconductor switch has a control line connected to the controller; and the switch circuit further comprises a second branch with a snubber circuit, which second branch is parallel with the first branch between the first input and the first output; and a flywheel diode with a first terminal connected to the first output, and a second terminal connected to the second output.