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. 21, 2016
Filed:
Jan. 10, 2013
Takao Kanzaki, Miyoshi, JP;
Koichi Sakata, Okazaki, JP;
Yusuke Shindo, Nagoya, JP;
Yasuaki Igarashi, Toyota, JP;
Takao Kanzaki, Miyoshi, JP;
Koichi Sakata, Okazaki, JP;
Yusuke Shindo, Nagoya, JP;
Yasuaki Igarashi, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
DENSO CORPORATION, Aichi-ken, JP;
Abstract
In a test of discharging a capacitor by electrically turning on a first switching element and a second switching element that are inserted in series in a conductor connecting a positive electrode and a negative electrode of the capacitor, a discharge current that passes through the first and second switching elements tend to apply stress on the first and second switching elements. In this discharge test, while a first control signal for putting the first switching element into a low resistance state is being applied to the first switching element, a second control signal increasing a voltage thereof over time is applied to the second switching element, and application of one of or both of the first and second control signals is stopped when a current detector detects a current. Since a discharge test ends when a limited discharge current starts flowing, stress associated with the discharge test is reduced.