| CPC H01M 10/486 (2013.01) [H01M 10/48 (2013.01); H01M 50/105 (2021.01); H01M 50/574 (2021.01); H01M 50/581 (2021.01); H01M 2200/105 (2013.01); H01M 2200/106 (2013.01)] | 6 Claims |
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1. A secondary battery comprising:
an electrode assembly;
a sheet-type exterior configured to accommodate the electrode assembly;
a plurality of temperature sensing parts provided adjacent to the exterior to sense a temperature of a plurality of areas, respectively, of the exterior;
an adhesive part adhering to a portion of a surface of the exterior;
a positive electrode lead having a shape that protrudes outward; and
a negative electrode lead having a shape that protrudes outward,
wherein the exterior comprises:
a body part having an internal space in which the electrode assembly is accommodated; and
a sealing part configured to seal the internal space of the body part,
wherein the adhesive part adheres to the sealing part and the body part so that the sealing part is bent to be in contact with a side surface of the exterior,
wherein the plurality of temperature sensing parts includes a first temperature sensing part and a plurality of second temperature sensing parts,
wherein the plurality of temperature sensing parts is attached to the adhesive part, so that the plurality of temperature sensing parts is adjacent to the side surfaces of the exterior,
wherein the first temperature sensing part comprises a positive temperature coefficient (PTC) element and a negative temperature coefficient (NTC) element, and
wherein each of the plurality of second temperature sensing parts include a respective positive temperature coefficient (PTC) element without including any negative temperature coefficient (NTC) element,
wherein the first temperature sensing part is closest to the negative electrode lead among the first temperature sensing part and the plurality of second temperature sensing parts.
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