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:
May. 24, 2016
Filed:
Aug. 06, 2012
Keiji Nagasaka, Tokyo, JP;
Hidetaka Sato, Tokyo, JP;
Koji Nakano, Tokyo, JP;
Shiro Matsubara, Tokyo, JP;
Satoshi Kominami, Tokyo, JP;
Keiji Nagasaka, Tokyo, JP;
Hidetaka Sato, Tokyo, JP;
Koji Nakano, Tokyo, JP;
Shiro Matsubara, Tokyo, JP;
Satoshi Kominami, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD., Kiyosu-shi, JP;
Abstract
A heater control device includes a current calculating unit () which calculates a third value of current based on a first value of current flowing through a first PTC element of a first PTC heater which is in an energized state and a second value of current estimated to flow through a second PTC element of a second PTC heater which is to be newly put into an energized state next, and a switching control unit () which maintains a non-energized state of the second PTC element of the second PTC heater until it is determined that the third value of current calculated by the current calculating unit () is less than a predetermined maximum allowable value of current and puts the second PTC element of the second PTC heater into an energized state when the third value of current is less than the predetermined maximum allowable value of current.