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:
Jan. 19, 1993
Filed:
Jul. 16, 1990
James A Giancaterino, Sheffield Lake, OH (US);
Bruce Walsh, Avon, OH (US);
Reliance Comm/Tec Corporation, Lorain, OH (US);
Abstract
An apparatus including a circuit which causes the float voltage of one or more battery chargers to change so as to compensate for changes in the ambient temperature of the batteries connected to the chargers. The circuit does not regulate the charge voltage to the battery but rather provides a battery temperature dependent variable voltage drop in the sense load of the charger(s). The circuit includes a thermistor which is used to sense the temperature of the battery. The temperature dependent resistance of the thermistor is used in a resistive divider for a reference voltage. Selection of the values for the divider components allows the battery temperature dependent variable reference voltage to be a linear approximation of the temperature compensation curve of the battery.