A solar power generation and storage unit includes a solar panel, and a storage battery directly connected to the solar panel, in which a maximum charging voltage of the storage battery is equal to or less than a value that is 10% larger than a maximum output operating voltage of the solar panel.

A user-wearable device utilizes energy harvesting technology to lengthen battery life or eliminates the need to charge the wearable device. In one embodiment, a user-wearable device combines energy harvesting technology with low power sensors and high efficiency processing methods to realize a self-charging or battery-less biometric monitoring system. The wearable biometric monitoring system provides accurate biometric measurements while enhancing user experience by extending the battery life or completely eliminating the need for the user to charge the device.

A method of diagnosing malfunctioning of a bypass diode in a solar photovoltaic battery system is provided. The method may include: collecting solar photovoltaic battery operation information indicating a solar photovoltaic battery operation state, from a signal of a solar photovoltaic battery detection unit, while maximum power point tracking control is performed with the solar photovoltaic battery system in operation; and determining whether or not the bypass diodes based on the collected solar photovoltaic battery operation information.

The present invention relates to a solar powered electric generator having a housing having at least one vent to allow air to exit from inside of the housing and at least one air intake to allow air to enter the housing. The solar powered electric generator includes a cooling fan to blow air out of the at least one vent and a threaded electrical input connector to receive electrical energy from a solar panel array. The solar powered electric generator includes at least one rechargeable battery, at least one electrical output connector, and at least one electrical controller to distribute electrical power received from the threaded electrical input connector to the at least one rechargeable battery and the at least one electrical output connector. The solar powered electric generator includes an adjustor that allows a user to adjust the output electrical energy to the at least one electrical output connector.

A Direct Connect Homegrid (DC-Homegrid) system for Direct Current (DC) power control and delivery into a structure by way of Unifying Electrical Interface (UEI) platforms is here presented. By means of the Homegrid, multiple self-contained approaches are introduced to keep a structure powered with DC, either as a substitute or as a supplement to the conventional Alternating Current (AC) source. By the illustrated approaches contained herein, a new methodology permitting to retain power operation in the occurrence of a blackout, due to natural disaster, cyber-attack or any other conventional AC grid failure, is revealed. Such DC-Homegrid is envisioned to become the precursor in establishing the DC infrastructure of the future. The embodiments presented in this patent illustrate alternate methods for achieving power independence while increasing the value for adoption of renewable and sustainable energy.

A charging system for transportation vehicles includes: a photovoltaic battery panel installed on a vehicle; a camera module; a first actuating device connected with the camera module; a light source; a second actuating device connected with the light source; and a controller being connected with the camera module, the first actuating device, the light source and the second actuating device. The controller is configured to control the first actuating device to rotate, and through the first actuating device control the camera module to capture a preset pattern on the vehicle. After the camera module has captured the preset pattern, the controller is configured to control the second actuating device to rotate accordingly so that the light source projects light to the photovoltaic battery panel and thereby charge the photovoltaic battery panel.

A portable power system comprising: a set of battery cells; a power outlet; a control module programmable for receiving a first charge information from a first cell controller, receiving a second charge information from a second cell controller, ending a balancing instruction to the first cell controller to delivery power from a first battery cell to a second battery cell; monitoring the first charge information while the first battery cell is being charged from an external power source, determining if the first charge information is equal to or higher than a predetermined charge percentage, sending a cease charging instruction to a first cell controller when the first charge information is equal to or greater than a predetermined percentage; and, supplying power from an external power source to the charge set of battery cells and transferring power from the discharge set of battery cells to the external load contemporaneously.

A system for supplying power to a portable battery pack including a battery enclosed by a wearable and replaceable pouch or skin using at least one solar panel is disclosed, wherein the pouch or skin can be provided in different colors and/or patterns. Further, the pouch or skin can be MOLLE-compatible. The battery comprises a battery element housed between a battery cover and a back plate, wherein the battery element, battery cover, and back plate have a slight curvature or contour. Further, the battery comprises flexible leads.

A rechargeable battery powered generator for quiet, off-grid power production includes a housing having a front panel separated from a rear panel, a top panel separated from a bottom panel, and a left panel separated from a right panel forming an inner compartment. A plurality of solar panels is coupled to the top panel. A plurality of batteries, a generator, and an electrical system are coupled to the housing. A plurality of outlets is coupled to the housing. The electrical system converts energy from the plurality of solar panels to charge the plurality of batteries, powers the generator from the plurality of batteries, and converts power from the plurality of batteries and the generator to the plurality of outlets.

A portable energy collection and storage device includes an electrically and thermally insulating substrate. At least one energy collection device is integrated into the electrically and thermally insulating substrate. At least one energy storage device is integrated into the electrically and thermally insulating substrate and is electrically coupled to the at least one energy collection device. A set of electrical contacts is integrated into the electrically and thermally insulating substrate and electrically coupled to the at least one energy storage device. The electrically and thermally insulating substrate has a thickness less than or equal to 1 mm.