Abstract: 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.

Abstract: Disclosed is an intelligent battery cell system (iBCS) comprising a battery cell, a battery monitoring system (BMS) integrated with the battery cell, and a housing. The BMS is both in signal communication with and physically attached to the battery cell within the housing and the BMS includes a processor and a memory, where the memory has a machine-readable medium having encoded thereon machine-executable instructions that cause the processor to perform one or more process steps in the operation of the BMS.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A battery module with battery cells in a battery pack, and an integrated battery management system (BMS) integrated within the battery module, the BMS having temperature sensors monitoring one or more locations within the battery pack, voltage sensors monitoring voltage at one or more battery cells within the battery pack and current sensors monitoring current of the one or more battery cells within the battery pack. A BMS digital memory stores historical battery module operating information and battery cells characterization data. A BMS microprocessor outputs a battery module safe operating limit, based at least in part on the temperature sensors, the voltage sensors, the current sensors, at least one of the historical battery module operating information and the one or more battery cells characterization data.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: An assembly for monitoring the operation of a large format battery module. Printed circuit boards may be routed within a battery module to electrically interconnect collector structures with a battery module monitoring circuit. Flexible printed circuits (FPCs) may be wrapped around one or more sides of a battery module and secured to it, such as via adhesive. Voltage monitoring FPCs may be applied to one or more side surfaces to electrically interconnect battery module collector structures with a monitoring circuit. Temperature monitoring FPCs may interconnect temperature sensors with the monitoring circuit. In some embodiments, one or more serpentine PCBs may be installed in a central channel between cells beneath a plurality of collector structures. The collector structures may include extensions overlaying the serpentine PCBs for direct welding to a steel pad on one of the serpentine PCBs.