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:
Apr. 10, 2018
Filed:
Oct. 20, 2015
Kokusan Denki Co., Ltd., Shizuoka-Ken, JP;
Nozomu Katsumata, Gotemba, JP;
Shuichi Muramatsu, Fuji, JP;
Masaki Asari, Izunokuni, JP;
Tomoya Tamakawa, Fuji, JP;
Akinari Ueki, Izunokuni, JP;
KOKUSAN DENKI CO., LTD., Shizuoka-Ken, JP;
Abstract
A battery charging device provided with: a bridge-type controlled rectifier circuit having three-phase thyristors for rectifying the output of a three-phase AC generator and supplying a charging current to a battery; and a controller for controlling the supplying of a trigger signal to the thyristors in accordance with the terminal voltage of the battery; the controller being configured so that the trigger signal is supplied to the thyristors simultaneously when it is detected that the terminal voltage of the battery is equal to or lower than a set voltage, and supplying of the trigger signal is stopped when a certain period has elapsed after the terminal voltage exceeds the set voltage, in order to prevent commutation failure of the thyristors when charging of the battery is stopped, and prevent overcharging of the battery.