Abstract: A housing is disclosed. The housing contains one or more components, where at least one of the components is an electrical component and where the components do not fill the housing completely and a cavity remains within the housing. One or more filling elements are provided in the cavity which fill more than half of the cavity on contact with water.

Abstract: A method for charging an auxiliary voltage source that provides power for at least one additional component, the additional component being in addition to an electric drive that is powered by a main voltage, is described. The method includes electrically connecting a protection and/or control circuit to the main voltage source via a DC-to-DC converter configured for power supply, and to the auxiliary voltage source via a reverse blocking valve. The method further includes electrically connecting the main voltage source to the auxiliary voltage source via a charging device. The method still further includes charging the auxiliary voltage source via the main voltage source.

Abstract: An outboard engine for propelling a boat includes a propulsion unit with an electric motor, a propeller driven by means of the electric motor, a control unit for controlling the power of the electric motor, and a water detection means. The water detection means is adapted to detect whether the propeller is submersed in water. The power of the electric motor can be influenced via the control unit based on the detection.

Abstract: A boat has a battery located within an interior of a battery-housing, which includes a waste gas outlet that has a gas-permeable seal and a pressure relief valve. The battery housing is gastight and watertight with the exception of the waste gas outlet. The gas-permeable seal is water-impermeable and comprises a semi-permeable diaphragm that allows the passage of water vapor out from the interior of the battery housing, but prevents the passage of water vapor into the interior of the battery housing.

Abstract: A boat drive for a boat having a boat hull with a bottom. The boat drive includes an underwater pod; an electric motor disposed in the underwater pod, the electric motor driving, via a drive shaft, a propeller attached to the underwater pod; and an electrical supply line for supplying energy to the electric motor. The boat drive further includes an inner tube connected to the underwater pod and displaceably disposed in an outer tube, wherein the electrical supply line is routed through the inner tube. The boat drive further includes a mounting body attachable to the bottom of the boat hull, wherein the outer tube is passed through the mounting body. At least one annular sealing element is disposed between the inner and outer tubes, wherein the at least one annular sealing element seals the inner tube and the outer tube in a radial direction relative to the longitudinal axis of the inner tube.

Abstract: A drive for a boat, in particular a sailing boat, comprising an electric motor configured for the operation in the first quadrant and in the fourth quadrant, a propeller connected to the electric motor, and a control device. The control device is configured to operate the electric motor in the fourth quadrant in such a way that flow energy transmitted via the propeller to the electric motor is regenerated into electrical power. The control device is further configured to operate the electric motor such that a product of the propeller's pitch and rotational speed is smaller than a relative flow speed between the water and the drive.

Abstract: A boat having an electric motor coupled with an electrical store is disclosed. The electrical store includes a storage element, and positive and negative poles in current-conducting connection with the storage element. An isolating circuit element is operatively connected to a user activatable emergency stop switch. The isolating circuit element is configured to, upon activation of the emergency stop switch, isolate the current-conducting connection between the storage element and at least one of the poles.

Abstract: A device for predetermining the driving stage of an electric motor of a boat is disclosed. A base plate is connected to a side wall of the boat and to a control lever, which is pivotable relative to the base plate about a pivot axis. The control lever is in turn coupled to a speed controller for controlling the motor. The control lever forms a substantially closed contour with a plane formed by the base plate.

Abstract: A device for specifying the power of an electric drive of a boat includes a hand-actuatable drive which can be positioned between a zero setting, in which the electric drive is stationary, and a maximum setting, in which the electric drive is operated at its nominal power. The device also includes a hand-actuatable overload switching device, on actuation of which the electric drive is operated in an overload operation.

Abstract: A control device for controlling an electric motor. The control device includes a twist grip that is rotatably mounted on a carrier such that the twist grip is user-twistable in a first direction from a neutral position to a first operating position, and in a second direction from the neutral position to a second operating position. The control device further includes a force element for producing a return force. The force element operatively couples to the twist grip via a force transmission element and at least one deflection element such that the force element applies the return force to the twist grip thereby twisting the twist grip to the neutral position.

Abstract: A boat drive includes an electric motor that drives a propeller to rotate; a user-actuated unlocking device; and a user-actuated control device configured to control the electric motor. The control device has a neutral position and at least one operating position. The control device and the unlocking device are configured to enable the electric motor to drive the propeller only when both the unlocking device is actuated and the control device is simultaneously in the at least one operating position.

Abstract: A boat is disclosed. The boat includes an electrical storage having a storage element electrically connected to a positive and a negative pole. The boat also includes a water sensor configured to determine whether one of the poles is in contact with water, and a disconnection device operatively connected to the water sensor and configured to interrupt the electrical connection between at least one of the poles and the storage element when the water sensor determines that one of the poles is in contact with water.

Abstract: A system for operating a boat equipped with an electric drive includes a component controller. The component controller includes a component interface for connecting a system component of the electric drive, and a communication interface for connecting the component controller to a system bus of the drive control.

Abstract: A method for charging an auxiliary voltage source that provides power for at least one additional component, the additional component being in addition to an electric drive that is powered by a main voltage, is described. The method includes electrically connecting a protection and/or control circuit to the main voltage source via a DC-to-DC converter configured for power supply, and to the auxiliary voltage source via a reverse blocking valve. The method further includes electrically connecting the main voltage source to the auxiliary voltage source via a charging device. The method still further includes charging the auxiliary voltage source via the main voltage source.

Abstract: A boat having an electric motor coupled with an electrical store is disclosed. The electrical store includes a storage element, and positive and negative poles in current-conducting connection with the storage element. An isolating circuit element is operatively connected to a user activatable emergency stop switch. The isolating circuit element is configured to, upon activation of the emergency stop switch, isolate the current-conducting connection between the storage element and at least one of the poles.

Abstract: A circuit and a method for connecting a first electrical storage device and a second electrical storage device in parallel is disclosed. The first electrical storage device and the second electrical storage device have in each case a no-load voltage UBat1, UBat2 and an impedance R1 and R2, respectively, and have connecting terminals for charge withdrawal or charge supply. The no-load voltage UBat1 of the first storage device is greater than the no-load voltage UBat2 of the second storage device. In the case of a charge withdrawal, a charge is initially only withdrawn from the first storage device and the second storage device is connected in parallel with the first storage device when the difference of the voltage dropped across the connecting terminals of the first storage device and the no-load voltage UBat2 of the second storage device is less than a predetermined differential add-on voltage.

Abstract: A boat drive includes an electric motor that drives a propeller to rotate; a user-actuated unlocking device; and a user-actuated control device configured to control the electric motor. The control device has a neutral position and at least one operating position. The control device and the unlocking device are configured to enable the electric motor to drive the propeller only when both the unlocking device is actuated and the control device is simultaneously in the at least one operating position.

Abstract: A control device for controlling an electric motor. The control device includes a twist grip that is rotatably mounted on a carrier such that the twist grip is user-twistable in a first direction from a neutral position to a first operating position, and in a second direction from the neutral position to a second operating position. The control device further includes a force element for producing a return force. The force element operatively couples to the twist grip via a force transmission element and at least one deflection element such that the force element applies the return force to the twist grip thereby twisting the twist grip to the neutral position.

Abstract: A boat drive for a boat having a boat hull with a bottom. The boat drive includes an underwater pod; an electric motor disposed in the underwater pod, the electric motor driving, via a drive shaft, a propeller attached to the underwater pod; and an electrical supply line for supplying energy to the electric motor. The boat drive further includes an inner tube connected to the underwater pod and displaceably disposed in an outer tube, wherein the electrical supply line is routed through the inner tube. The boat drive further includes a mounting body attachable to the bottom of the boat hull, wherein the outer tube is passed through the mounting body. At least one annular sealing element is disposed between the inner and outer tubes, wherein the at least one annular sealing element seals the inner tube and the outer tube in a radial direction relative to the longitudinal axis of the inner tube.