The present disclosure relates to a reconfigurable battery system and method of operating the same. The reconfigurable battery system comprising a plurality of switchable battery modules, a battery supervisory circuit, and a battery pack controller, where the plurality of switchable battery modules electrically arranged in series to define a battery string defining an output voltage. The battery pack controller operable to connect the battery string to the external bus via a pre-charge switch to perform a pre-charge cycle.

A rechargeable power device comprises one or more supercapacitors, at least one rechargeable battery and control electronics arranged to couple the supercapacitor(s) to the at least one rechargeable battery. The rechargeable power device may be operable to rapidly recharge and provide power to electronic equipment, whilst being flexible in structure. The rechargeable power device may be integrated into a user device and/or garment.

An energy storage device temperature control method is provided, to reduce a waste of electric energy. The method includes: obtaining an idle electric energy yield of a photovoltaic power generation system and a battery temperature of an energy storage device, where the photovoltaic power generation system includes a photovoltaic array, the energy storage device, and a load, the energy storage device includes a refrigerating device and a battery, and the idle electric energy yield is a difference between an electric energy yield of the photovoltaic array and an electric energy consumption amount of the energy storage device and the load; and determining a refrigeration temperature of the refrigerating device based on the idle electric energy yield and the battery temperature, where the refrigerating device is used to control a temperature of the battery.

A portable solar panel system includes a first subassembly, a second subassembly, and a support assembly. The first subassembly includes a first solar panel and a first frame extending around a first periphery of the first solar panel. The second subassembly includes a second solar panel and a second frame extending around a second periphery of the second solar panel. The first frame and the second frame are pivotably coupled together such that the first subassembly and the second subassembly are selectively foldable. The support assembly includes a first leg assembly coupled to the first frame, a second leg assembly coupled to the second frame, and a support foot pivotably coupling the first leg assembly to the second leg assembly.

Provided herein are systems and methods for storing energy. A photon battery assembly may comprise a light source, phosphorescent material, a photovoltaic cell, and a waveguide. The phosphorescent material can absorb optical energy at a first wavelength from the light source and, after a time delay, emit optical energy at a second wavelength after a time delay. The photovoltaic cell may absorb the optical energy at the second wavelength and generate electrical power. In some instances, a first waveguide may be configured to direct the optical energy at the first wavelength from the light source to the phosphorescent material and/or a second waveguide may be configured to direct the optical energy at the second wavelength from the phosphorescent material to the photovoltaic cell.

A power device capable of displaying various statuses and a displaying method are provided. The power device includes: a central microprocessor, a power conversion circuit, an LED bar (or a light bar) circuit, and a battery pack. The central microprocessor intrinsically has color setting and control logic and is internally provided with a color setting and control logic circuit. The power device is externally connected to a utility power source, a solar photovoltaic power source, a backup battery pack, and a load. The color setting and control logic circuit enables the LED bar circuit to correspondingly emit LED light of at least two colors according to different power sources supplied to the load or a battery capacity, and the LED light is displayed in a breathing-like manner. The central microprocessor adjusts a breathing rate of the LED light according to a power consumption of the load.

This solar unit includes: a charging/discharging part in which a solar panel and a power storage battery are connected; two terminals connected to the charging/discharging part; a bypass wiring connecting the two terminals; and a switching element located at a connection portion between one of the two terminals and the bypass wiring. The switching element switches between a first current path along which a current flows through the charging/discharging part and a second current path along which a current flows through the bypass wiring while bypassing the charging/discharging part.

A transport refrigeration unit (TRU) system is provided and includes a TRU and an energy storage device (ESD). The TRU includes components which are configured to control an environment and a TRU controller configured to control the components in accordance with component operating settings. The ESD includes an ESD controller receptive of identification data identifying the components, current condition data reflective of current conditions and control data reflective of a temperature profile. The ESD controller is configured to determine the component operating settings in accordance with the identification, current condition and control data and to issue the component operating settings to the TRU controller.

Disclosed is an all-in-one emergency shed that can supply electricity and potable drinkable water during an emergency when electrical grid power is not available and water sources may be contaminated. The emergency shed can use battery banks from electric cars to store electrical energy for emergencies and can store electrical energy in electric car battery banks that are charged during off-peak times and resold to the utility company during peak demand periods.

Methods and devices for forming painted circuits using multiple layers of electrically conductive paint. In one aspect, a painted circuit includes a substrate (111) and one or more paint layer (106, 108, 110, 112, 114, 116, 120, 122) applied to the substrate, where the one or more paint layers each form an electrical component of the painted circuit. A given paint layer of the one or more paint layers includes a conductive paint formulation having a resistance that is defined by a concentration of conductive material that is included in the conductive paint formulation and a thickness of the given paint layer, and lower concentrations of the conductive material included in the conductive paint formulation provide a higher resistance than higher concentrations of conductive material.