Abstract: The present invention provides a battery cluster topology for a lithium-ion battery energy storage system and a control method of battery cluster therefor. The battery cluster parallel topology for the lithium-ion battery energy storage system includes at least two parallel battery cluster units, and the battery cluster unit is composed of N battery packs (N is a natural number greater than or equal to 2), N bidirectional DC/DC voltage conversion modules, N bypass switches, BDCM coordination controller units, circuit switches, and primary buses for connection.

Abstract: Various embodiments provide a portable electronic device holder (400, 500, 600, 700, 900, 1100, 1400) for a passenger seat (202), including a longitudinal clamping structure (420, 520) having a generally L-shaped cross-section. The clamping structure includes a supporting flap (422, 522) forming an L-base of the generally L-shaped clamping structure and configured to support a portable electronic device, and a clamping flap (424, 524) forming an L-leg of the generally L-shaped clamping structure and configured to clamp the portable electronic device against a surface (650) abutting the portable electronic device. The portable electronic device holder further includes a mounting element (410, 510) for slidably or titlably mounting the clamping structure to the passenger seat.

Abstract: The present invention is a badge holder with a lanyard and magnetic clip, as shown in FIG. 1. This invention will allow the user to simultaneously have the freedom of using the functions of the lanyard, and at the same time have the badge holder not sway around by using the magnetic clip. The clip will keep the badge holder right in front of the user's clothing, providing the user a clean and neat look. The badge holder is easy to fabricate as well, using two pieces of leather, a piece of fabric cloth and two pieces of magnets.

Abstract: Various embodiments provide a portable electronic device holder (400, 500, 600, 700, 900, 1100, 1400) for a passenger seat (202), including a longitudinal clamping structure (420, 520) having a generally L-shaped cross-section. The clamping structure includes a supporting flap (422, 522) forming an L-base of the generally L-shaped clamping structure and configured to N support a portable electronic device, and a clamping flap (424, 524) forming an L-leg of the generally L-shaped clamping structure and configured to clamp the portable electronic device against a surface (650) abutting the portable electronic device. The portable electronic device holder further includes a mounting element (410, 510) for slidably or titlably mounting the clamping structure to the passenger seat.