Follicle, Inc.

Other

Lithos Energy, Inc.

Erik Stafl

Eric D Nelson

Christopher Rebholz

James Meredith

David T Kirkland

Marcos L Nolan

Katelyn Ferguson

Eric Nelson

A battery operated hair dryer includes a battery management and control module to control how to efficiently dry a user's hair while maintaining the health and charge of the battery.

Battery operated hair dryer

A battery module is formed from a plurality of battery cells having top and bottom electrodes. Top and bottom collector plates overlay, and are electrically connected with, the battery cell top and bottom electrodes. The collector plates may be formed wholly or primarily from copper. Cell apertures may be formed within the collector plates overlying each cell, with collector arms extending into said apertures for connection with an underlying cell electrode. The collector arms may include a fusible link for each cell. A bridge collector plate may span subsets of cells, and include a module-level fusible link formed therein. A current concentrator, such as a dimple or depression, may be formed in a collector arm to facilitate resistance welding of the copper collector plates to underlying battery cells, which may include electrodes formed from steel or other material more resistive than the copper collector plates.

Copper collector plate for high power battery modules

Battery management systems and methods for operation of same are provided. A first switchable resistance may be connected between a cell stack positive end and ground. A second switchable resistance may be connected between a cell stack negative end and ground. The switches for each resistance may be alternately opened and closed, with comparison of the resulting currents through each resistance being indicative of a location of isolation leakage current within a battery system cell stack, and/or the magnitude of isolation leakage current. Currents through the first and/or second switchable resistances may also be indicative of Y capacitance. The first and second switchable resistances may further be used to reduce energy stored by Y capacitance.

Location-determinant fault monitoring for battery management system

Hair dryer

Charging base for a hair dryer

Growing community of inventors

San Francisco, CA, United States of America

Erik Stafl