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:
Feb. 15, 2000
Filed:
Nov. 20, 1997
Applicant:
Inventors:
Johan Mercke, Lund, SE;
Bjorn Frannhagen, Lund, SE;
Assignee:
Telefonaktiebolaget LM Ericsson, Stockholm, SE;
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ;
U.S. Cl.
CPC ...
320106 ; 320134 ;
Abstract
A battery pack for a portable electric apparatus has one or more than one battery cells and terminals for electric connection to the apparatus. The battery pack has a first terminal for receiving charging current from the apparatus, a second terminal for feeding supply current to the apparatus, and a third terminal for establishing a zero or ground line common to the apparatus and the battery pack. Furthermore, the battery pack has a first voltage converter arranged between the first terminal and the battery cell(s), and a second voltage converter arranged between the second terminal and the battery cell(s).