EXPANSION MEMBER FOR PROBE FOR CHARGING AND DISCHARGING BATTERY AND PROBE INCLUDING THE SAME

Disclosed is an expansion member for a probe for battery charging and discharging. The expansion member includes a first fluid accommodation part configured to form a space in which a fluid is introduced and stored and a fluid supply pipe equipped with a path along which the fluid is introduced and discharged and connected to the first fluid accommodation part. The first fluid accommodation part includes a first cover and a second cover. The first cover and the second cover are bonded together to form a first fluid accommodation space in which the fluid is accommodated. The first fluid accommodation space is surrounded by a first junction region in which the first cover and the second cover are bonded together. A penetration hole is formed on the top of the first junction region.