The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2005
Filed:
Apr. 16, 2002
Jose Antonio Vieira Formenti, Allen, TX (US);
Jose Antonio Vieira Formenti, Allen, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Multiple battery systems and switching networks are provided for portable electronic devices. A single switching cell is provided per battery and a load switch coupled to a battery power bus to achieve proper connectivity and isolation between batteries, a load and a charger. The single switching cells are configured as a back-to-back MOSFET switch devices. The charger is also coupled to the battery power bus and can be enabled when AC power to the portable electronic device is not available. The present invention facilitates selective connection of battery packs in a multiple battery system to a load or a charger, while still maintaining isolation between battery packs, the load and the charger.