Eveready Battery Company, Inc.

Moltech Power Systems, Inc.

Alexander Jacobs, Iii

Ernest D Botos

Rick Burkholder

David C Baggaley

David Baggaley

A modularized power supply is presented employing individual electrochemical cells which are rendered inert when separated from a specified unlocking circuit. The cells are enclosed in a cell module having a disabling circuit which isolates the cell terminals and prevents release of significant cell energy. A switch in the disabling circuit is activated when the cell module is connected to the specified unlocking circuit in an external frame. The frame includes receptacles for receiving multiple modules, all of which must be connected before power is delivered to a host interface. The frame may include circuits and devices for monitoring the performance of the modules, for controlling cell charging and discharging, and protective elements to protect the modules and tray from aberrant conditions such as high temperatures, overcurrent, and similar events. By including these in the frame, fewer elements are required in the individual modules, reducing their complexity, weight and cost. The present concepts are embodied in both integrated power supplies and removable battery packs. Using thin rigid modules, a large flat battery pack is formed. The relatively smaller modules are less susceptible to damage from handling. This is particularly advantageous when the cell used in embodiments with a lithium ion, lithium ion polymer or similar cell having a potential for producing fires in the event of an internal short. Power supplies using both primary and secondary cells are provided.

Battery pack with multiple secure modules

The invention pertains to housings and enclosures for assemblies of electrochemical cells such as used in consumer electronic devices. A system of structural elements having constant cross-section along at least one axis is provided to construct protective housings for electrochemical cell assemblies. Where cell assemblies include sensitive circuit elements such as circuit boards the fabricated housings include cover portions to reduce the chance of impact or contact damage to the circuit elements. By designing structural elements having open and constant cross-sections, a family of housing components may be fabricated from a single structural element by altering a length. Different configuration housings may also be constructed by rearranging the housing components or introducing additional interconnecting components. By incorporating a unified interconnecting element into each component, interchangeability is increased. In this way, the number of distinct housings that can be constructed from a limited number of distinct structural elements is increased. The invention includes cell assemblies incorporating such housing components. The invention provides inexpensive and easy methods of forming enclosures for a variety of cell assemblies by avoiding multiple toolings for unique parts.

Growing community of inventors

Alachua, FL, United States of America

Alexander Jacobs, Iii