US 11,916,199 B2
Battery cell leak inspection device and battery cell leak inspection method
Seungjae Lee, Yongin-si (KR); Sukkeun Kang, Yongin-si (KR); Kyeongseon Yoo, Yongin-si (KR); and Youngmin Kim, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Appl. No. 16/980,102
Filed by Samsung SDI Co., Ltd., Yongin-si (KR)
PCT Filed Feb. 27, 2019, PCT No. PCT/KR2019/002388
§ 371(c)(1), (2) Date Sep. 11, 2020,
PCT Pub. No. WO2019/177288, PCT Pub. Date Sep. 19, 2019.
Claims priority of application No. 10-2018-0029278 (KR), filed on Mar. 13, 2018.
Prior Publication US 2021/0020997 A1, Jan. 21, 2021
Int. Cl. H01M 10/42 (2006.01); G01B 7/06 (2006.01); G01M 3/36 (2006.01)
CPC H01M 10/4228 (2013.01) [G01B 7/06 (2013.01); G01M 3/36 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus for inspecting a battery cell for battery cell leaks, comprising:
a vacuum chamber including an upper chamber and a lower chamber and configured to set a receiving space to a controlled pressure different from a first pressure, the upper chamber and the lower chamber being arranged to face each other with the receiving space for a battery cell therebetween and providing sealing for the receiving space;
a vacuum pipe valve fluidly connected to the receiving space for the battery cell to set the receiving space to a second pressure less than the first pressure; and
a thickness measuring sensor configured to measure a before-vacuum thickness of the battery cell under the first pressure and measure an after-vacuum thickness of the battery cell under the second pressure; and
a destroy pipe valve configured to set the receiving space for the battery cell to a third pressure higher than the second pressure.