Sandvik Mining and Construction Oy

Raimo Juntunen

Mikko Kouvo

Harri Vatanen

Mikko Kitula

Samuli Verho

Tommi Tiihonen

Mikko Kuovo

Raimo Komu

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.

Method and arrangement for controlling electric current in tether cable of mining vehicle

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.

Online battery state of health estimation during charging

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.

System and method for supplying electric energy to a mining vehicle and a mining vehicle

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Tampere, Finland

Raimo Juntunen