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. 16, 2017
Filed:
May. 14, 2015
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Eiki Imaizumi, Chiba, JP;
SII SEMICONDUCTOR CORPORATION, Chiba, JP;
Abstract
A battery remaining power predicting device is provided which is equipped with a first voltage detection portion which detects the voltage of a battery, a second voltage detection portion which detects a voltage across a current sense resistor for detecting a load current, a controller which predicts the remaining power of the battery, based on the values of the voltages detected by the first and second voltage detection portions, and a constant current source which allows a constant current to flow through the current sense resistor. The controller is configured to calculate a resistance value of the current sense resistor, based on the detected voltage of the second voltage detection portion when the load current flows, and the detected voltage of the second voltage detection portion when the load current and the constant current flow.