	US 12,272,800 B2
	Semiconductor device, battery pack, and electronic device
Takayuki Ikeda, Atsugi (JP); Takeshi Aoki, Ebina (JP); Munehiro Kozuma, Atsugi (JP); Kei Takahashi, Isehara (JP); and Shunpei Yamazaki, Setagaya (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
Appl. No. 17/439,436
Filed by Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
PCT Filed Mar. 16, 2020, PCT No. PCT/IB2020/052356 § 371(c)(1), (2) Date Sep. 15, 2021, PCT Pub. No. WO2020/194116, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-058624 (JP), filed on Mar. 26, 2019; and application No. 2019-070596 (JP), filed on Apr. 2, 2019.
Prior Publication US 2022/0190398 A1, Jun. 16, 2022
Int. Cl. H01M 10/42 (2006.01); H02J 7/00 (2006.01); H02J 50/12 (2016.01)

CPC H01M 10/4264 (2013.01) [H01M 10/4235 (2013.01); H02J 7/0031 (2013.01); H02J 7/0068 (2013.01); H01M 2220/30 (2013.01); H02J 50/12 (2016.02)]

9 Claims

1. A battery pack comprising:

a secondary battery; and

a semiconductor device, the semiconductor device comprising:

a first switch;

a second switch;

a third switch;

a first capacitor; and

a comparator,

wherein one terminal of the first switch is electrically connected to a first terminal,

wherein the other terminal of the first switch is electrically connected to a non-inverting input of the comparator,

wherein one terminal of the second switch is electrically connected to a second terminal,

wherein the other terminal of the second switch is electrically connected to one terminal of the third switch,

wherein the other terminal of the third switch is electrically connected to a third terminal,

wherein the first capacitor is provided between the other terminal of the first switch and the one terminal of the third switch,

wherein an inverting input of the comparator is electrically connected to a fourth terminal,

wherein an output of the comparator is electrically connected to a fifth terminal,

wherein the semiconductor device is provided over a flexible substrate,

wherein a negative electrode of the secondary battery is electrically connected to the first terminal, and

wherein a positive electrode of the secondary battery is electrically connected to the third terminal.