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. 26, 2021
Filed:
Oct. 23, 2019
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Naoyoshi Takamatsu, Shizuoka-ken, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A battery heating device includes: a capacitor connected in parallel between a battery and a load; a reactor connected to the capacitor; a first switch connected to a terminal on the load side of the reactor, and to one terminal of the capacitor; a second switch connected to a terminal on the load side of the reactor, and to another terminal of the capacitor; a controller configured to control an ON/OFF state of the first switch and the second switch; and a current sensor configured to detect a direction and a current value of a reactor current flowing in the reactor. The controller performs battery heating mode control including a first control of turning OFF the first switch and turning ON the second switch when a current value becomes substantially zero from a state where the reactor current flows from the load side to the battery side.