A method of assembling a bar-shaped battery, an electronic cigarette, and a bar-shaped battery, the bar-shaped battery including a battery case and a battery, the bar-shaped battery including a battery case, 10), a control module (2) configured to control the battery (10) that supplies power to the spray assembly, and an end cover (12) provided at one end of the battery case; The control module (2) is provided with a wire (3) electrically connected to the battery (10) and an air flow rate sensor for detecting a smoking operation; The end cover 12 includes a cover main body 121 showing an outer contour of the battery case 11 and a connection sleeve 122 inserted into the battery case 11; An elastic mounting base 4 is built in the connection sleeve 122; The control module (2) is located on the elastic installation base (4); The outer circumferential surface of the elastic mounting base 4 is in contact with the inner wall of the connecting sleeve 122 and the inner circumferential surface of the elastic mounting base 4 is in contact with the outer circumferential surface of the control module 2 in a flexible manner; The wire 3 is disposed between the outer circumferential surface of the control module 2 and the inner circumferential surface of the elastic installation base 4 and is pliably pressed; An air passage (5) is formed between the control module (2) and the cover body (121); The end cover (12) is provided with an air inlet (123) communicating with the air passage (5). The elastic mounting base is used to ensure that the rod-shaped battery has airtightness, the gas flow sensor has high sensitivity, and the wire 3 is prevented from being damaged by the control module 2. [막대형 배터리, 전자 담배 및 막대형 배터리의 조립방법, 상기 막대형 배터리는 배터리 케이스와 배터리를 포함하며, 상기 막대형 배터리는 배터리 케이스(11), 상기 배터리 케이스(11) 내부에 장착된 배터리(10), 분무 조립체에 전력을 공급하는 상기 배터리(10)를 제어하도록 구성된 제어 모듈(2), 및 상기 배터리 케이스의 한쪽 말단에 구비된 단부 커버(12)를 포함하고; 상기 제어 모듈(2)에는, 상기 배터리(10)에 전기적으로 접속된 와이어(3) 및, 흡연 동작을 감지하기 위한 공기 유량센서가 구비되고; 상기 단부 커버(1