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:
Jun. 01, 1993
Filed:
Feb. 18, 1992
Michael T Reher, Milwaukee, WI (US);
Bradley N Koeppel, Watertown, WI (US);
Globe Union Inc., Milwaukee, WI (US);
Abstract
A battery thermal control system and method is provided which selectively heats or cools a storage battery in accordance with the battery temperature and state of charge. The thermal control system includes a battery housing having an internal airspace between the battery and the housing which extends between two openings in the battery housing, a reversible fan configured to generate an airstream along the airspace, a temperature sensor mounted to detect the temperature of the battery, and a control circuit for monitoring battery temperature and voltage and for controlling the operation of the fan. Battery state of charge is approximated by measuring battery voltage and monitored to prevent excessive battery discharge by the thermal control system. When the battery voltage exceeds a predetermined voltage and the battery temperature is outside of a predetermined range of suitable operating and storage temperatures, the thermal control system operates the fan to heat or cool the battery, as needed.