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公开(公告)号：US11577600B2
公开(公告)日：2023-02-14
申请号：US17466137
申请日：2021-09-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jiangang Wang , Quanming Li , Tingyu Xie , Yibo Wang
Abstract: This application provides a motor, including a stator core and a motor housing provided with a distribution groove, a liquid inlet channel, and a liquid outlet channel. The distribution groove is provided on an inner wall of the motor housing, the liquid inlet channel is in communication with the distribution groove and an outer space of the motor housing, and the liquid outlet channel is in communication with an inner cavity and the outer space of the motor housing. An outer wall of the stator core is provided with a stator groove. The stator groove is in communication with both the distribution groove and the liquid outlet channel. The liquid inlet channel, the distribution groove, the stator groove, and the liquid outlet channel are in communication to form a coolant channel.
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公开(公告)号：US12275296B2
公开(公告)日：2025-04-15
申请号：US17994630
申请日：2022-11-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Shaobo Yang , Haisong Xu , Jiangang Wang , Jun Chen
Abstract: A power assembly includes a rotor iron core, a gear set, a rotating shaft, and an oil-pumping system. The rotating shaft is fixedly connected to the rotor iron core and a driving gear in the gear set. The housing has an oil storage pool at a bottom and an oil collection tank at a high location, a part of a structure of a first gear in the gear set is located in the oil storage pool, and the first gear rotates to drive cooling oil in the oil storage pool to be raised and collected by the oil collection tank. The rotating shaft has a cooling oil channel inside. The cooling oil in the oil collection tank flows to the cooling oil channel, to dissipate heat from the rotor iron core.
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公开(公告)号：US20230296038A1
公开(公告)日：2023-09-21
申请号：US18323259
申请日：2023-05-24
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jiangang Wang , Chaoqiang Wu , Hongbing Liu , Jun Chen , Hu Zhong
CPC classification number: F01M1/16 , F01M1/02 , F01M11/0004 , F16D57/06
Abstract: An oil inlet of a motor communicates with a first end of an oil pump through a first passage. A first oil sump of the motor communicates with a second end of the oil pump through a second passage. When the oil pump is rotating, a port at the first end is an oil outlet of the oil pump, and a port at the second end is an oil inlet of the oil pump. The first end of the oil pump communicates with a second oil sump through a third passage with a first valve. The second end of the oil pump communicates with the second oil sump through a fourth passage with a second valve. In this way, when the oil pump is reversing, coolant may be input into a motor cavity and accumulate in the motor cavity, so as to cool motor components in an immersion manner.
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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
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.
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公开(公告)号：US11901775B2
公开(公告)日：2024-02-13
申请号：US17472998
申请日：2021-09-13
Applicant: Huawei Digital Power Technologies Co., Ltd
Inventor： Jiangang Wang , Quanming Li , Tingyu Xie
CPC classification number: H02K1/32 , B60K1/00 , B60K17/08 , H02K1/28 , B60K2001/006
Abstract: A rotor includes a rotor iron core, a rotor shaft, and a fastening plate. The rotor iron core includes a first and a second end, and extends along an axial direction. The first fastening plate is fastened to at least the first or second end, and includes a through hole and a first runner. An inlet of the first runner communicates with the through hole. An outlet of the first runner is on a surface of a side of the fastening plate. The rotor shaft includes a second runner and a third runner in the rotor shaft. An inlet of the second runner is at one end of the at least one end of the rotor shaft. An outlet of the second runner communicates with an inlet of the third runner. An outlet of the third runner communicates with the inlet of the first runner.
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Patent Agency Ranking
公开(公告)号：US12212266B2
公开(公告)日：2025-01-28
申请号：US17858812
申请日：2022-07-06
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jiangang Wang , Jiyang Li , Wen Ye
Abstract: A powertrain, a coolant flow rate estimation method, and an electric vehicle are provided. Coolant in a first cooling loop of the powertrain is configured to cool an inverter. An electronic pump drives the coolant to circulate in the first cooling loop. When a phase current of a motor is greater than or equal to a preset current value, a controller determines a rotation speed of the electronic pump at a first moment as a first rotation speed, and determines a coolant flow rate at the first moment based on a temperature at a first position in the first cooling loop, a temperature at a second position in the inverter, and a power loss of the inverter. In the solution of this application, data does not need to be separately calibrated for different thermal management systems. This reduces time consumed by data calibration and improves practicability.
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公开(公告)号：US11982214B2
公开(公告)日：2024-05-14
申请号：US18323259
申请日：2023-05-24
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jiangang Wang , Chaoqiang Wu , Hongbing Liu , Jun Chen , Hu Zhong
CPC classification number: F01M1/16 , F01M1/02 , F01M11/0004 , F16D57/06
Abstract: An oil inlet of a motor communicates with a first end of an oil pump through a first passage. A first oil sump of the motor communicates with a second end of the oil pump through a second passage. When the oil pump is rotating, a port at the first end is an oil outlet of the oil pump, and a port at the second end is an oil inlet of the oil pump. The first end of the oil pump communicates with a second oil sump through a third passage with a first valve. The second end of the oil pump communicates with the second oil sump through a fourth passage with a second valve. In this way, when the oil pump is reversing, coolant may be input into a motor cavity and accumulate in the motor cavity, so as to cool motor components in an immersion manner.
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公开(公告)号：US20230150352A1
公开(公告)日：2023-05-18
申请号：US17984552
申请日：2022-11-10
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jiangang Wang , Jiyang Li
Abstract: An oil temperature control method is applied to a controller of an electric vehicle that includes an oil cooling circuit, where the oil cooling circuit flows through a motor and an inverter. The method includes the following steps: determining an oil temperature at a detection point, where the detection point is a specified location in the oil cooling circuit; when the oil temperature is lower than a first target temperature, triggering one or more of the following operations: bypassing an oil-water heat exchanger, reducing a water flow rate, and increasing a power of an oil pump; or when the oil temperature is higher than a second target temperature, triggering one or more of the following operations: disabling a bypass path of an oil-water heat exchanger, increasing a water flow rate, and reducing a power of an oil pump.
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公开(公告)号：US20230087205A1
公开(公告)日：2023-03-23
申请号：US17994630
申请日：2022-11-28
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Shaobo Yang , Haisong Xu , Jiangang Wang , Jun Chen
Abstract: A power assembly includes a rotor iron core, a gear set, a rotating shaft, and an oil-pumping system. The rotating shaft is fixedly connected to the rotor iron core and a driving gear in the gear set. The housing has an oil storage pool at a bottom and an oil collection tank at a high location, a part of a structure of a first gear in the gear set is located in the oil storage pool, and the first gear rotates to drive cooling oil in the oil storage pool to be raised and collected by the oil collection tank. The rotating shaft has a cooling oil channel inside. The cooling oil in the oil collection tank flows to the cooling oil channel, to dissipate heat from the rotor iron core.
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公开(公告)号：US12134303B2
公开(公告)日：2024-11-05
申请号：US17953487
申请日：2022-09-27
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jiangang Wang , Shaobo Yang , Jun Chen , Quanming Li
IPC: B60H1/32
Abstract: A temperature control system includes: a first cooling circuit, where a first cooling medium is circulated in the first cooling circuit, and the first cooling circuit is configured to cool a first structural unit; a second cooling circuit, where a second cooling medium is circulated in the second cooling circuit, and the second cooling circuit is configured to cool a second structural unit; and a heat exchanger, separately connected to the first cooling circuit and the second cooling circuit, and configured to perform heat exchange between the first cooling medium and the second cooling medium, where the first cooling circuit includes a bypass branch, and the bypass branch is connected in parallel to the heat exchanger. According to the temperature control system, heat dissipation efficiency for an inverter and an overall heat dissipation capability for a powertrain are improved.
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