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.

Date of Patent:
Feb. 11, 2014

Filed:

Mar. 24, 2010
Applicants:

Yoshikazu Kiyohara, Osaka, JP;

Toshiyuki Nakatsuji, Hyogo, JP;

Takahisa Otsu, Osaka, JP;

Inventors:

Yoshikazu Kiyohara, Osaka, JP;

Toshiyuki Nakatsuji, Hyogo, JP;

Takahisa Otsu, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01); H02H 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A protection circuit having: a connecting terminal which is connected to an external circuit and which inputs and outputs a charging/discharging current of a secondary battery to and from the external circuit; a voltage detection unit for detecting an output voltage of the secondary battery; a current detection unit for detecting a discharging current of the secondary battery; a power consumption calculation unit for calculating power consumption of the external circuit by multiplying a value of the output voltage detected by the voltage detection unit by a value of the discharging current detected by the current detection unit; and an external protection unit for executing external protection processing of protecting the external circuit when the power consumption calculated by the power consumption calculation unit exceeds a power threshold set to a value that is not less than a maximum value of power consumption of the external circuit.


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Kiyohara, Yoshikazu. (2014). Protection circuit and battery pack (U.S. Patent No. 8648572). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8648572

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