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:
Apr. 19, 2022

Filed:

Nov. 06, 2019
Applicant:

O2micro Inc., Santa Clara, CA (US);

Inventor:

Guoxing Li, Sunnyvale, CA (US);

Assignee:

O2Micro Inc., Santa Clara, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/18 (2006.01); H01M 10/42 (2006.01); H02H 3/08 (2006.01); H02H 5/04 (2006.01);
U.S. Cl.
CPC ...
H02H 7/18 (2013.01); H01M 10/4257 (2013.01); H02H 3/085 (2013.01); H02H 5/044 (2013.01);
Abstract

A battery protection system includes a sensor, a primary protection circuit, coupled to the sensor, and a secondary protection circuit, coupled to the primary protection circuit and the sensor. The sensor is configured to generate a sense signal indicative of temperature in a battery pack when the sensor is activated. The primary protection circuit is configured to generate a synchronizing signal in a first state or a second state, sample the sense signal when the synchronizing signal is in the first state, and provide primary protection to the battery pack based on the sense signal. A secondary protection circuit is configured to be controlled by the synchronizing signal, sample the sense signal when the synchronizing signal is in the second state, and provide secondary protection to the battery pack based on the sense signal.


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