US 11,984,562 B2
Charging-control device and electronic device with secondary battery
Ryota Tajima, Kanagawa (JP); Toshiyuki Isa, Kanagawa (JP); and Akihiro Chida, Kanagawa (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken (JP)
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
Filed on Dec. 27, 2022, as Appl. No. 18/089,199.
Application 18/089,199 is a continuation of application No. 16/767,637, granted, now 11,563,238, previously published as PCT/IB2018/059485, filed on Nov. 30, 2018.
Claims priority of application No. 2017-236608 (JP), filed on Dec. 11, 2017.
Prior Publication US 2023/0132746 A1, May 4, 2023
Int. Cl. H01M 10/42 (2006.01); B60L 58/18 (2019.01); G01R 31/367 (2019.01); H01M 10/48 (2006.01)
CPC H01M 10/4235 (2013.01) [B60L 58/18 (2019.02); G01R 31/367 (2019.01); H01M 10/4257 (2013.01); H01M 10/48 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A charging control device comprising:
a first secondary battery, a second secondary battery, and a third secondary battery connected in series;
a first switch which cuts off electric power supply from one terminal of the first secondary battery to one terminal of the second secondary battery; and
an anomaly-monitoring unit comprising a microcomputer,
wherein the microcomputer is configured to analyze the states of the first to third secondary batteries and detect a micro-short circuit in the first to third secondary batteries with the use of a neural network, and
wherein, when the micro-short circuit is detected, the anomaly-monitoring unit is configured to connect the one terminal of the first secondary battery in series to the third secondary battery with the use of a wire bypassing the one terminal of the second secondary battery and switch the first switch so that the second secondary battery is not charged.