公开(公告)号：US20250020410A1

公开(公告)日：2025-01-16

申请号：US18902724

申请日：2024-09-30

Applicant: BYD COMPANY LIMITED

Inventor： Yaomin Cai ,  Rijun Zhong ,  Xiaolin Xiao ,  Qingbo Peng ,  Renyi Zhou

IPC: F28D7/16

Abstract: A harmonica-shaped tube, a harmonica-shaped tube type heat exchanger and a vehicle are provided. The harmonica-shaped tube includes a plurality of flow channels arranged at intervals. Inner walls of at least some flow channels include protrusions protruding in a direction approaching centers of the flow channels and/or include recesses recessing in a direction away from the centers of the flow channels. The protrusions and recesses enable a liquid fluid (e.g., refrigerant) to nucleate rapidly, and can also burst large nucleuses which grow in a disorderly manner, thereby preventing the large nucleuses from forming boundary layers on inner walls of the plurality of flow channels, such that nucleuses can be separated from inner wall surfaces rapidly. Therefore, heat exchange performance of the harmonica-shaped tube is improved, and heat exchange requirements of a traction battery are satisfied.