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:
Nov. 13, 2012
Filed:
Apr. 13, 2010
Ingolf Bonkhoff, Münster, DE;
Aniu Liu, ShenZhen, CN;
Ingolf Bonkhoff, Münster, DE;
Aniu Liu, ShenZhen, CN;
Friwo Geratebau GmbH, Ostbevern, DE;
Abstract
The present invention relates to a battery charger for charging a battery (), said battery charger comprising an AC/DC power supply means (), a pulse width modulation controlled DC/DC converter () and a control unit () that is connected to the AC/DC power supply means () and the PWM-controlled DC/DC converter (). The battery charger has a maximum output power while avoiding to blow up small battery packs if the control unit () is adapted to measure at least a voltage and a current at terminals of the battery () to be charged, calculate a power at the battery (), compare the calculated power and the nominal maximum power of the AC/DC power supply means (), and transmit a signal to the PWM-controlled DC/DC converter () to adjust a charging current supplied to the battery () based on the comparison result. A temperature at the battery can also be measured.