公开(公告)号：US20220242249A1

公开(公告)日：2022-08-04

申请号：US17612490

申请日：2020-05-20

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Samuli VERHO ,  Harri VATANEN ,  Tommi TIIHONEN ,  Mikko KOUVO ,  Raimo JUNTUNEN ,  Mikko KITULA

IPC: B60L9/00 ,  B60L53/302 ,  B60L53/18 ,  B60L50/53

Abstract: A method and arrangement are provided for controlling electric current in a tether cable of an electrically driven mining vehicle. An indicator of an equivalent cycle current that flows through said tether cable is determined, and one or more descriptors of an actual state of dynamically changing conditions of the tether cable are obtained. A current limiting value is determined on the basis of the indicator and the descriptors, and a total amount of current is limited that the mining vehicle draws through the tether cable to a value smaller than or equal to the determined current limiting value.

公开(公告)号：US20210197679A1

公开(公告)日：2021-07-01

申请号：US17057387

申请日：2019-05-16

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Mikko KOUVO ,  Raimo JUNTUNEN

IPC: B60L53/14 ,  H02J7/00 ,  B60L50/60 ,  B60L53/20 ,  B60L58/22

Abstract: A system and method for supplying electric energy to a mining vehicle and a mining vehicle are provided. Electric energy is supplied to the mining vehicle using a system including a bipolar LVDC supply having a certain total voltage. The mining vehicle has at least a first energy unit and a second energy unit. The first energy unit is connected to a part of the certain total voltage and the second energy unit is connected to another part of the certain total voltage.

公开(公告)号：US20220219546A1

公开(公告)日：2022-07-14

申请号：US17612394

申请日：2020-05-13

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Mikko KOUVO ,  Raimo JUNTUNEN ,  Mikko KITULA ,  Samuli VERHO ,  Harri ERIKSSON ,  Harri VATANEN ,  Jussi MIKKOLA ,  Jouni TEPPO

IPC: B60L9/00 ,  B60L50/51

Abstract: A mining vehicle includes a traction mechanism for propelling the mining vehicle, a traction motor for driving the traction mechanism, a cable connection for connecting the mining vehicle to an external source of electric energy, and an electric power link between the cable connection and the traction motor for conveying electric energy from said cable connection to said traction motor. The electric power link includes a DC power link. The mining vehicle also includes a traction DC/AC converter for converting DC power from the DC power link into AC power for feeding into the traction motor.

公开(公告)号：US20220163594A1

公开(公告)日：2022-05-26

申请号：US17425879

申请日：2020-01-28

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Mikko KUOVO ,  Harri VATANEN ,  Raimo JUNTUNEN

IPC: G01R31/392 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00 ,  B60L58/16 ,  B60L53/62 ,  B60L53/65

Abstract: A method for determining the state of health of a battery by monitoring charging of the battery over multiple charging instances is provided. The method is implemented within charging stations by: recognizing the battery via a unique identifier; charging the battery; monitoring conditions of the battery during charging; storing data related to the current charging instance based at least partially on the monitored conditions; retrieving data related to at least one earlier charging instance of the uniquely identified battery; and making a determination of the uniquely identified battery's state of health based at least partially on a comparison of the data related to the current charging instance and the retrieved data related to at least one earlier charging instance.