Energy packet switches (EPS) employing supercapacitors as storage provide aggregation and delivery of energy to users based on shared-capacitance in a digital power grid. The EPS aggregates energy from one or multiple energy sources, stores and dispatches the energy in discrete amounts as energy packets to one or multiple users. The payload of the energy packet is adjusted by the voltages of the supercapacitors which are used as energy containers for both the EPS and the users. The EPS has a control plane where data transmitted is used to control the operation of the EPS, and a power plane to receive and transmit energy between ports. The power and data planes work in parallel and with a parallel data network. Control and management of the EPS are based on a request-grant transport protocol. The data network is used to receive energy requests and grants, and a granting scheme is used to select which loads are granted energy. By sending addresses of granted loads on the data network and energy on the energy grid, energy is delivered to addressed destinations.

In a first aspect, the invention is a system for sharing power among interconnected tools and is made up of multiple battery-powered tools, each with a battery. A processor is associated with each tool and its battery. Each tool, its battery, and associated processor is electrically and communicatively connected to each other. The tools, their battery and associated processor are adapted to communicate with each other in order to provide charging current to each battery, to monitor the charge level of each battery and to direct current from one battery with a higher charge level to another battery with a lower charge level. Preferably, the system is also adapted to enable power to be directed to corded electric tools.

A decentralized charging network of mobile power transmitters comprises a server, power receivers, and a fleet of deployable mobile power transmitters comprising a control system, a power source system having a charge measuring device for monitoring the charge transfer, a charging system configured to transfer charge from the power source system to the power receiver, and a communication system for communication between a power receiver, a server, and the control system. A charging request is received and processed by a server from a power receiver or an operator preparing to charge a power receiver. A qualified mobile power transmitter is identified and instructed to arrive at a location and to charge a power receiver according to charging instructions prepared by the server. The charging is monitored and, upon completion, the mobile power transmitter deactivates the charging session and informs the server.

A microgrid control system that can govern power provided to a load from various power sources. The microgrid control system can determine apportionment of power between the various sources based on characteristic power features of the various sources.

A microgrid control system that can govern power provided to a load from various power sources. The microgrid control system can determine apportionment of power between the various sources based on characteristic power features of the various sources.

In general, techniques are described that are directed to a device that includes a power storage device, an electrical load, and a first regulated power converter including components configured to generate, during a first time period and using electrical energy received from a power source external to the device, a first power signal to charge the power storage device. A second regulated power converter includes components configured to determine a charging current at which to charge the power storage device, determine a total amount of current flowing to the power storage device that includes current sourced by the second power converter less current sinked by the electrical load, and generate, during a second time period that is non-overlapping with the first time period, using electrical energy from the power source and based on determined the total amount of current, a second power signal to charge the power storage device.

In one embodiment, a method includes determining, by an auxiliary power controller, a first selection of one or more power input sources from a plurality of power input sources. The method also includes determining, by the auxiliary power controller, a first selection of one or more power consuming devices from a plurality of power consuming devices. The method further includes managing, by the auxiliary power controller, transfer of auxiliary power from the first selection of the one or more power input sources to the first selection of the one or more power consuming devices.

Provided is an electric vehicle system/general vehicle system having a sudden unintended acceleration prevention function, the system comprising: an auxiliary fuel tank mounted to a vehicle; a hydrogen generation means for receiving fuel from the auxiliary fuel tank so as to generate hydrogen; a stack for receiving hydrogen generated by the hydrogen generation means so as to generate power; a voltage level change unit for changing the voltage level of power generated by the stack; a main battery and an auxiliary battery which are charged by a charging voltage output from the voltage level change unit; a control unit driven by power output from the auxiliary battery; and a drive load unit including a drive motor driven by power output from the main battery or the stack.

Systems, apparatus, and methods for dynamic battery management. Historically, most portable devices were designed to work with dry cell and rechargeable batteries which provided a stable power level that slowly dropped over time. More recently, however, some products have implemented dynamic loading capabilitiesdynamic loading potentially offers better performance, longer battery life, and/or improved functionality. Unfortunately, dynamic loads have highly variable voltage readings that present a challenge in estimating remaining battery capacity. Various embodiments of the present disclosure provide power from multiple different power sources with different characteristics and/or capabilities. The power sources are monitored and dynamically loaded according to their capability. Additionally, the estimated usage may be provided to the user to inform them of e.g., remaining capacity, ongoing current draw, etc.

A working method of a modular uninterruptible power supply (UPS) includes: obtaining working parameters of the modular UPS, where the working parameters include an input voltage parameter, a load parameter, and a battery parameter; and adjusting a working mode of a power module in the modular UPS according to at least one of the working parameters of the modular UPS, so that not all power modules are in a same working mode, where the modular UPS includes K working modules, and 2K.