公开(公告)号：US20230256811A1

公开(公告)日：2023-08-17

申请号：US18167466

申请日：2023-02-10

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hongbing Liu ,  Jingzhou Wei ,  Yi Cao

IPC: B60K11/02 ,  B60K1/02 ,  F16H57/04

CPC classification number: B60K11/02 ,  B60K1/02 ,  F16H57/0413 ,  F16H57/0417 ,  B60K2001/006

Abstract: A powertrain includes a reservoir configured to store coolant; a first drive motor, where the first drive motor includes a first stator and a first rotor; a second drive motor, where the second drive motor includes a second stator and a second rotor; a first pump and a second pump, where an inlet of the first pump is coupled to the reservoir, and an inlet of the second pump is coupled to the reservoir; a heat exchanger, where the heat exchanger is coupled to the first pump; a first flow path, where the first flow path is coupled to an outlet of the first pump, and the first flow path is used to supply the coolant to the first stator and the second stator through the heat exchanger.

公开(公告)号：US11906037B2

公开(公告)日：2024-02-20

申请号：US17964116

申请日：2022-10-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hongbing Liu ,  Xiang Fang ,  Yi Cao ,  Jiangang Wang

IPC: F16H57/04 ,  B60K1/02 ,  B60K1/00

CPC classification number: F16H57/0476 ,  F16H57/0415 ,  F16H57/0423 ,  F16H57/0435 ,  F16H57/0441 ,  F16H57/0445 ,  B60K1/02 ,  B60K2001/006

Abstract: A power assembly and a vehicle. The power assembly includes a housing, and a first drive motor, a first speed reducer, a first oil path, a second drive motor, a second speed reducer, a second oil path, and a third oil path that are located inside the housing. The power assembly further includes a first oil pump and a second oil pump. The housing is provided with an oil pan. The first drive motor includes a first stator and a first rotor. The second drive motor includes a second stator and a second rotor. Both the first oil pump and the second oil pump are connected to the oil pan. The power assembly simplifies the oil paths in the housing and improve an integration level.

公开(公告)号：US12038082B1

公开(公告)日：2024-07-16

申请号：US18339394

申请日：2023-06-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wenwu Ma ,  Yi Cao ,  Maojie Ren ,  Jinsong Zhang

IPC: F16H57/04 ,  B60K1/00 ,  F16H57/02

CPC classification number: F16H57/0476 ,  B60K1/00 ,  F16H57/0436 ,  F16H2057/02034 ,  F16H2057/02043 ,  F16H57/0486

Abstract: A control method and apparatus may be applied to an electric drive system. The electric drive system includes an oil pump, a motor, a reducer, and a housing, the motor and the reducer are disposed in the housing, lubricating oil is stored in the housing, and the oil pump is configured to pump the lubricating oil. The method includes: obtaining a first rotational speed of the motor, a second rotational speed of the oil pump, and a temperature of the lubricating oil in the housing; and controlling a rotational speed of the oil pump to be a third rotational speed based on the first rotational speed, the second rotational speed, and the temperature. In this way, the rotational speed of the oil pump can be adjusted to change liquid levels of the lubricating oil in a cavity and oil pump power at different rotational speeds of the oil pump.