Abstract: The invention relates to an electric power transmission system (20) for a vehicle (10) comprising an energy storage system (30) for storing electrical power and a bidirectional power system (40) connected to the energy storage system, the bidirectional power system comprising a bidirectional DC/AC converter (50) for power conversion, the bidirectional DC/AC converter (50) being connected to the energy storage system, a junction unit (60) connected to the bidirectional DC/AC converter and comprising a charging interface (70) for connecting to an external power supply grid (72), and an electrical power take-off (ePTO) (80) interface for connecting to an external power load (82), and wherein the bidirectional power system is configured to perform any one of the following operations: an ePTO first operation (1 10), in which power is transferred from the energy storage system to the ePTO interface via the bidirectional power system, an ePTO second operation (120), in which power is transferred from the charging in

Abstract: An electric power module system (1) for use in an electrically operated vehicle (21), comprising: —a base module comprising a cooling passage for fluid coolant and coolant connections for supplying fluid coolant to the cooling passage, the base module further comprising at least one external electrical connection for power input to and/or power output from the electric power module system, —an add-on module configured to be mounted to and electrically connected to the base module, so that the add-on module, when mounted, can be cooled and powered via the base module. When the add-on module is mounted, the cooling passage is delimited by at least a first delimiting surface provided on the base module and a second delimiting surface provided on the add-on module, so that fluid coolant supplied via the coolant connections of the base module comes into contact with both of said delimiting surfaces.

Abstract: The invention relates to a control unit (28) for an electric power transmission system (20) to be comprised in a vehicle or vessel. The electric power transmission system comprises the control unit, an energy storage system (30) for storing electrical energy and at least one electrical power take-off interface (80, 82) for connecting to an external power load (82, 88). The at least one electrical power take-off interface is connected to the energy storage system in a way allowing energy transfer to the external power load.

Abstract: An electric power module system (1) for use in an electrically operated vehicle (21), comprising: —a base module comprising a cooling passage for fluid coolant and coolant connections for supplying fluid coolant to the cooling passage, the base module further comprising at least one external electrical connection for power input to and/or power output from the electric power module system, —an add-on module configured to be mounted to and electrically connected to the base module, so that the add-on module, when mounted, can be cooled and powered via the base module. When the add-on module is mounted, the cooling passage is delimited by at least a first delimiting surface provided on the base module and a second delimiting surface provided on the add-on module, so that fluid coolant supplied via the coolant connections of the base module comes into contact with both of said delimiting surfaces.

Abstract: The invention relates to an electric power transmission system (20) for a vehicle (10) comprising an energy storage system (30) for storing electrical power and a bidirectional power system (40) connected to the energy storage system, the bidirectional power system comprising a bidirectional DC/AC converter (50) for power conversion, the bidirectional DC/AC converter (50) being connected to the energy storage system, a junction unit (60) connected to the bidirectional DC/AC converter and comprising a charging interface (70) for connecting to an external power supply grid (72), and an electrical power take-off (ePTO) (80) interface for connecting to an external power load (82), and wherein the bidirectional power system is configured to perform any one of the following operations: an ePTO first operation (1 10), in which power is transferred from the energy storage system to the ePTO interface via the bidirectional power system, an ePTO second operation (120), in which power is transferred from the charging in