Abstract: The present application provides a battery power supply device and a battery power supply system. The battery power supply device includes a control module, a DC/DC conversion module and a battery. The DC/DC conversion module includes N DC/DC converters connected in series or in parallel. When the battery power is constant, more output current can be obtained when the N DC/DC converters are in parallel, and more output voltage can be obtained when the N DC/DC converters are in series. Embodiments enable a battery power supply device or system to meet voltage requirements of different loads and improve applicability of a battery.

Abstract: In some embodiments, input convex neural networks are used to model and control complex physical systems. In some embodiments, input convex recurrent neural networks are used to capture temporal behavior of dynamical systems. Optimal controllers may be achieved via solving a convex model predictive control problem. Such models and controllers are useful in controlling many types of complex physical systems, including but not limited to heating, ventilation, and air conditioning (HVAC) systems in order to greatly reduce energy consumption compared to classic linear models and controllers.