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, 2011
Filed:
Jun. 11, 2007
Takao Yamamoto, Hirakata, JP;
Norito Yamabe, Toyohashi, JP;
Takao Yamamoto, Hirakata, JP;
Norito Yamabe, Toyohashi, JP;
Panasonic EV Energy Co., Ltd., Kosai-shi, JP;
Abstract
In a battery cooling device for cooling a battery with air from a cooling unit, such as a cooling fan, the air flow of the cooling unit is optimally controlled. A air flow control device calculates a calorific value of the battery based on an internal resistance of the battery and a charge/discharge current measured by a current measurement unit, calculates the difference as a differential temperature between battery temperature measured by a battery temperature measurement unit and ambient temperature measured by an ambient temperature measurement unit, and controls the air flow of the cooling fan on the basis of the calculated calorific value and the differential temperature.