Abstract: An energy store has at least one energy storage module with a plurality of energy storage cells. The energy storage cells are each electrically coupled to a monitoring unit. Each monitoring unit is designed to discharge the respective energy storage cell by use of a specified symmetry current in an active operating state. The method operates the energy store by performing the acts of: detecting an open-circuit voltage of each energy store cell and determining a discharge duration for each energy storage cell as a function of the open-circuit voltage of the energy storage cell and a specified target discharge voltage value; and controlling each monitoring unit in order to discharge the respective energy storage cell by use of the specified symmetry current for the discharge duration associated with the respective energy storage cell.

Abstract: A battery module having a controllable external heat sink and methods of operating the battery module are provided. According to an aspect of the invention, the battery module includes a battery cell, an external circuit connected to the battery cell, and a controller that controls the external circuit. The external circuit includes a first switch and a heat sink. If an internal short circuit within the battery cell is detected, the controller closes the first switch in order to generate heat in the heat sink.

Abstract: A battery module having a controllable external heat sink and methods of operating the battery module are provided. According to an aspect of the invention, the battery module includes a battery cell, an external circuit connected to the battery cell, and a controller that controls the external circuit. The external circuit includes a first switch and a heat sink. If an internal short circuit within the battery cell is detected, the controller closes the first switch in order to generate heat in the heat sink.

Abstract: A battery module having a controllable external heat sink and methods of operating the battery module are provided. According to an aspect of the invention, the battery module includes a battery cell, an external circuit connected to the battery cell, and a controller that controls the external circuit. The external circuit includes a first switch and a heat sink. If an internal short circuit within the battery cell is detected, the controller closes the first switch in order to generate heat in the heat sink.

Abstract: A battery module having a controllable external heat sink and methods of operating the battery module are provided. According to an aspect of the invention, the battery module includes a battery cell, an external circuit connected to the battery cell, and a controller that controls the external circuit. The external circuit includes a first switch and a heat sink. If an internal short circuit within the battery cell is detected, the controller closes the first switch in order to generate heat in the heat sink.

Abstract: Provided is a system for generating circular steady water waves for sport activities. The system comprises a ring-shaped water pool having inner and exterior rings and a floor inclined from the outer ring to the center of the water pool. The system comprises channels located under the floor of the water pool for recirculating water. At least one water propeller turbine is installed inside the channels and configured to recirculate water from the water pool through the channels and back to the water pool. The system comprises guiding plates installed on the floor. Waves of different shapes including breaking waves are generated by varying velocities of different water current and controlling guiding plates.

Abstract: An energy store has at least one energy storage module with a plurality of energy storage cells. The energy storage cells are each electrically coupled to a monitoring unit. Each monitoring unit is designed to discharge the respective energy storage cell by use of a specified symmetry current in an active operating state. The method operates the energy store by performing the acts of: detecting an open-circuit voltage of each energy store cell and determining a discharge duration for each energy storage cell as a function of the open-circuit voltage of the energy storage cell and a specified target discharge voltage value; and controlling each monitoring unit in order to discharge the respective energy storage cell by use of the specified symmetry current for the discharge duration associated with the respective energy storage cell.

Abstract: A method monitors the vehicle handling of a vehicle with respect to vehicle stability by comparing a measured variable, which reflects the yaw rate or the lateral acceleration, with a comparison value, which is derived from the steering angle, specified by the driver. The gradients of the regression lines, which are normalized in relation to each other, of the measured variable, on the one hand, and the comparison value, which represents the steering angle, on the other hand, are compared continuously over a number of analysis time windows. Upon finding a significant deviation between these gradients, an unstable driving condition is concluded. The difference between the gradients of the regression lines, which may be determined by a first order least squares method and normalized to the same units by a suitably applied amplification factor, are determined and compared with a suitably determined limit value, above which an instability is inferred.

Abstract: A method monitors the vehicle handling of a vehicle with respect to vehicle stability by comparing a measured variable, which reflects the yaw rate or the lateral acceleration, with a comparison value, which is derived from the steering angle, specified by the driver. The gradients of the regression lines, which are normalized in relation to each other, of the measured variable, on the one hand, and the comparison value, which represents the steering angle, on the other hand, are compared continuously over a number of analysis time windows. Upon finding a significant deviation between these gradients, an unstable driving condition is concluded. The difference between the gradients of the regression lines, which may be determined by a first order least squares method and normalized to the same units by a suitably applied amplification factor, are determined and compared with a suitably determined limit value, above which an instability is inferred.