HEAT EXCHANGE TUBE AND HEAT EXCHANGER HAVING SAME

A heat exchange tube and a heat exchanger (200) having same. The heat exchange tube comprises a tube body (1), a tube body cavity (11), a first member (2) and a welding part (3). The tube body (1) comprises a first side wall (12) and a second side wall (13). A flat tube (100) further comprises a plurality of channels (16); the welding part (3) is positioned in at least one channel; on the cross section of the flat tube (100), the section of the welding part (3) is partially overlapped with the flow section of the channel, and is connected to the first side wall (12), the maximum height of the section of the welding part (3) in the height direction of the flat tube (100) is D, N*(Wb+0.2D) > 0.0017Wt2+0.0175Wt+0.3713, or N*(Wb+0.2D) < 0.0119Wt2+0.086Wt+2.9649, wherein the number of channels of the flat tube (100) is N, the thickness of the first member (2) is Wb, and the width of the flat tube (100) is Wt.