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. 13, 2015
Filed:
Jul. 03, 2012
Susumu Harada, Hitachinaka, JP;
Atsuo Suga, Yokohama, JP;
Sadayuki Aoki, Takahagi, JP;
Hitachi Automotive System, Ltd., Hitachinaka-shi, JP;
Abstract
Equalization of a temperature distribution in a flow direction on a cooling plate is facilitated so that temperatures of plural cells that thermally contact with the cooling plate are equalized, to reduce variability in the state of charge-discharge and the lifetimes of the respective cells. A battery module includes a cooling plate having a refrigerant channel in which a refrigerant circulates, and plural cells that are thermally conductively coupled onto a surface of the cooling plate, in which the refrigerant channel is formed with plural large diameter pipes that decelerate the refrigerant, and plural small diameter pipes that accelerate the refrigerant, a channel sectional area of the large diameter pipes is larger than a refrigerant channel sectional area of the small diameter pipes arranged on an inflow side of the large diameter pipes.