BATTERY PACK WITH MULTIPLE SECURE MODULES

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...

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Bibliographische Detailangaben
Hauptverfasser: BAGGALEY, DAVID, C, JACOBS, ALEXANDER, III
Format: Patent
Sprache:eng ; fre
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Beschreibung
Zusammenfassung: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. L'invention concerne un bloc d'alimentation modularisé utilisant des cellules électrochimiques qui sont rendues inertes lorsqu'elles sont séparées d'un circuit de déverrouillage spécifié. Ces cellules sont enfermées dans un module cellulaire présentant un circuit de neutralisation qui isole les bornes des cellules et bloque la libération d'une quantité d'énergie cellulaire significative. Un interrupteur du circuit de neutralisation s'active lorsque le module cellulaire est connecté au circuit de déverrouillage spécifié situé dans un cadre extérieur. Ce cadre comporte des réceptacles destinés à recevoir plusieurs modules devant tous être connectés avant que l'énergie ne soit transmise à une interface hôte. Le cadre peut comporter des circuits et des dispositifs servant à surveiller le rendement des modules, à commander le chargement et le déchargement des cellules ainsi que des éléments protecteurs servant à protéger les modules et le bac contre des conditions aberrantes, telles que de