US 11,987,009 B2
Heater for sealing process of secondary battery
Jong Hong Jeong, Chungcheongbuk-do (KR); and Sang Jin Kim, Daejeon Metropolitan (KR)
Assigned to CLEVER CO., LTD., Chungcheongbuk-do (KR)
Appl. No. 17/426,738
Filed by Jong Hong Jeong, Chungcheongbuk-do (KR)
PCT Filed Jul. 24, 2020, PCT No. PCT/KR2020/009789
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2021/015589, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 10-2019-0089867 (KR), filed on Jul. 24, 2019.
Prior Publication US 2022/0102783 A1, Mar. 31, 2022
Int. Cl. B29C 65/00 (2006.01); H01M 50/105 (2021.01)
CPC B29C 66/1122 (2013.01) [H01M 50/105 (2021.01)] 6 Claims
OG exemplary drawing
 
1. A heater for a sealing process of a secondary battery, the heater comprising:
a sealing bar heating and pressing a pouch foil to be sealed;
a plurality of sub-heating units longitudinally disposed inside the sealing bar to respectively independently supply heat to a plurality of sections separated in the longitudinal direction of the sealing bar;
temperature sensing units disposed inside the sealing bar and sensing temperature at positions on surfaces being in contact with the pouch foil; and
a control unit controlling heating temperature of the plurality of sub-heating units on the basis of the temperature sensed by the temperature sensing units,
wherein heat dissipation efficiency of the sealing bar decreases toward both longitudinal ends from a center portion thereof.