公开(公告)号：US20250065691A1

公开(公告)日：2025-02-27

申请号：US18941764

申请日：2024-11-08

Applicant: BYD COMPANY LIMITED

Inventor： Yaomin Cai ,  Jian Zhai ,  Rijun Zhong ,  Ruiyuan Zhu ,  Lu Chen

IPC: B60H1/00

Abstract: A direct cooling plate, a heat exchanger, a power battery pack and a vehicle are disclosed. The direct cooling plate includes a plurality of heat exchange channels, which are arranged inside the direct cooling plate. Each heat exchange channel includes an inlet for a refrigerant and an outlet for the refrigerant to flow out therefrom. The at least one heat exchange channel is circumferentially arranged around the other heat exchange channels; and each heat exchange channel forms a heat exchange unit at the direct cooling plate, and the heat exchange unit is used for performing heat exchange in different temperature regions of a battery. The direct cooling plate can control the temperature of the refrigerant at the inlet of each heat exchange channel aimed at different temperature regions of the battery, such that the overall temperature difference of the battery is improved, and prolonging the service life of the battery.

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.