公开(公告)号：EP4545897A1

公开(公告)日：2025-04-30

申请号：EP23830372.1

申请日：2023-06-28

Applicant: BYD Company Limited

Inventor： CAI, Yaomin ,  ZHAI, Jian ,  ZHONG, Rijun ,  ZHU, Ruiyuan ,  CHEN, Lu

IPC: F28F3/00

Abstract: A direct cooling plate, a heat exchanger, a power battery pack and a vehicle. 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 to enter therein and an outlet for the refrigerant to flow out therefrom, wherein 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 thereby prolonging the service life of the battery.

公开(公告)号：EP4550523A1

公开(公告)日：2025-05-07

申请号：EP23830369.7

申请日：2023-06-28

Applicant: BYD Company Limited

Inventor： ZHONG, Rijun ,  CAI, Yaomin ,  XIAO, Xiaolin ,  ZHU, Ruiyuan ,  GU, Zhengrong

IPC: H01M10/613 ,  H01M10/6556 ,  H01M10/6568

Abstract: A power battery heat exchanger, a power battery system and an electric vehicle. The power battery heat exchanger comprises a connector, a first header assembly and a second header assembly which are arranged separately in a first direction, and a plurality of harmonica tubes arranged between the first header assembly and the second header assembly and separately arranged in a second direction. The first header assembly comprises a first header and a second header, an inlet of the connector is separately in communication with first ends of part of the harmonica tubes by means of the first header, and an outlet of the connector is separately in communication with first ends of the other harmonica tubes by means of the second header. Second ends of the plurality of harmonica tubes are in communication with each other by means of the second header assembly.

公开(公告)号：EP4549867A1

公开(公告)日：2025-05-07

申请号：EP23830368.9

申请日：2023-06-28

Applicant: BYD Company Limited

Inventor： CAI, Yaomin ,  ZHONG, Rijun ,  XIAO, Xiaolin ,  PENG, Qingbo ,  ZHOU, Renyi

IPC: F28F1/40

Abstract: A harmonica-shaped tube, a harmonica-shaped tube type heat exchanger and a vehicle. The harmonica-shaped tube comprises a plurality of flow channels arranged at intervals, wherein inner walls of at least some flow channels are provided with protrusions protruding in the direction approaching the centers of the flow channels and/or recesses recessed in the direction away from the centers of the flow channels. The protrusions and recesses can enable a liquid fluid (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 the inner walls of the flow channels, such that nucleuses can be separated from wall surfaces rapidly. Therefore, the heat exchange performance of the harmonica-shaped tube is improved, and the heat exchange requirements of a traction battery are satisfied.

公开(公告)号：EP4517929A1

公开(公告)日：2025-03-05

申请号：EP23795650.3

申请日：2023-04-28

Applicant: BYD Company Limited

Inventor： XIAO, Xiaolin ,  ZHONG, Rijun ,  CAI, Yaomin ,  PENG, Qingbo

IPC: H01M10/613 ,  H01M10/6568 ,  H01M10/617 ,  H01M10/625 ,  H01M10/6556 ,  H01M10/6554

Abstract: A vehicle is provided with a battery pack. The battery pack comprises a heat radiator assembly. The heat radiator assembly comprises a first heat radiator, a second heat radiator, a third heat radiator, and at least one fourth heat radiator. The third heat radiator is connected between the first heat radiator and the second heat radiator. The third heat radiator is separately communicated with the first heat radiator and the second heat radiator; the at least one fourth heat radiator is connected between the first heat radiator and the second heat radiator, and the fourth heat radiator is separately communicated with the first heat radiator and the second heat radiator; the at least one fourth heat radiator and the third heat radiator are arranged side by side between the first heat radiator and the second heat radiator; the first heat radiator and the second heat radiator are both stamping plate type heat radiators; and the fourth heat radiator is a harmonica-shaped tube heat radiator.