US 11,799,139 B2
Method for generating smoke in cell pack
Takayuki Hojo, Nagoya (JP); and Akira Kiyama, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on May 1, 2018, as Appl. No. 15/967,677.
Claims priority of application No. 2017-091675 (JP), filed on May 2, 2017.
Prior Publication US 2018/0323479 A1, Nov. 8, 2018
Int. Cl. H01M 10/42 (2006.01); H01M 10/48 (2006.01); H01G 9/008 (2006.01); H01G 9/14 (2006.01); H01G 9/08 (2006.01); H01G 11/14 (2013.01); H01G 11/74 (2013.01); H01G 11/78 (2013.01); H01M 50/581 (2021.01); H01M 50/562 (2021.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 10/0525 (2010.01); H01M 10/0587 (2010.01)
CPC H01M 10/4285 (2013.01) [H01G 9/008 (2013.01); H01G 9/08 (2013.01); H01G 9/14 (2013.01); H01G 11/14 (2013.01); H01G 11/74 (2013.01); H01G 11/78 (2013.01); H01M 10/48 (2013.01); H01M 10/482 (2013.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 50/562 (2021.01); H01M 50/581 (2021.01); H01M 10/0525 (2013.01); H01M 10/0587 (2013.01); H01M 2200/10 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for setting a sensitivity of a smoke sensor based on smoke generated in a cell pack,
the cell pack comprising:
a plurality of unit cells, each having an electrode body formed by interposing a separator between a positive electrode and a negative electrode, and a cell case for accommodating the electrode body;
connecting members for connecting each of the plurality of unit cells;
a sealed container for accommodating the plurality of unit cells connected by the connecting members;
a positive electrode output terminal for electrically connecting a positive electrode terminal of one of the plurality of unit cells and an external device, a portion of which is exposed to the outside through the sealed container; and
a negative electrode output terminal for electrically connecting a negative electrode terminal of one of the plurality of unit cells and the external device, a portion of which is exposed to the outside through the sealed container,
the method comprising:
attaching a heating means to the portion exposed to the outside of the sealed container on one of the positive electrode output terminal and the negative electrode output terminal to perform heating;
heating the electrode body of a specific single unit cell of the plurality of unit cells through the positive electrode output terminal or the negative electrode output terminal to which the heating means has been attached;
generating smoke from the specific single unit cell by the short-circuit between the positive electrode and the negative electrode due to melting the separator; and
setting a sensitivity of the smoke sensor such that the smoke sensor is configured to detect the smoke generated from only the specific single unit cell among the plurality of unit cells included in the sealed container,
wherein the setting of the sensitivity of the smoke sensor comprises:
changing the sensitivity of the smoke sensor so that the smoke sensor reacts to the smoke generated from the specific single unit cell; and
setting the sensitivity of the smoke sensor based on a sensitivity when the smoke sensor reacted.