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公开(公告)号：US20240351572A1
公开(公告)日：2024-10-24
申请号：US18761488
申请日：2024-07-02
Applicant: BYD COMPANY LIMITED
Inventor： Yi HAN , Bo PENG , Futang ZHU , Chunsheng WANG
CPC classification number: B60W20/12 , B60W10/08 , B60W2510/244 , B60W2556/50
Abstract: A hybrid electric vehicle, an electricity generation method and apparatus therefor, and a vehicle controller are provided. The method includes: obtaining position information of the hybrid electric vehicle, proportions of different vehicle speed ranges within preset time, and proportions of different gradient ranges of a road on which the hybrid electric vehicle is located within the preset time; determining a current operating condition of the hybrid electric vehicle according to the position information, the proportions of different vehicle speed ranges, and the proportions of different gradient ranges; obtaining corresponding target electricity generation power according to the operating condition; and controlling the hybrid electric vehicle to generate electricity according to the target electricity generation power.
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公开(公告)号：US20240140393A1
公开(公告)日：2024-05-02
申请号：US18361342
申请日：2023-07-28
Applicant: BYD COMPANY LIMITED
Inventor： Dongsheng YANG , Chunsheng WANG , Yunhui BAI
Abstract: This application discloses a hybrid power automobile and a power system thereof. The power system includes: an engine, where the engine outputs power to wheels of the hybrid power automobile through a clutch; a power motor, where the power motor is configured to output a drive force to the wheels of the hybrid power automobile; a power battery, where the power battery is configured to supply power to the power motor; a DC-DC converter; and an auxiliary motor connected to the engine, where the auxiliary motor is connected to the power motor, the DC-DC converter, and the power battery, and when performing power generation under driving of the engine, the auxiliary motor implements at least one of charging the power battery, supplying power to the power motor, and supplying power to the DC-DC converter. Therefore, low-speed electric balance and low-speed smoothness of the entire vehicle can be maintained.
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公开(公告)号：US20240018895A1
公开(公告)日：2024-01-18
申请号：US18373221
申请日：2023-09-26
Applicant: BYD COMPANY LIMITED
Inventor： Futang ZHU , Chunsheng WANG , Qiuping HUANG
CPC classification number: F01P7/167 , F01P11/18 , F01P2037/00
Abstract: A method for controlling thermal management of a vehicle is provided. The vehicle includes an engine and a thermal management system. The thermal management system includes a water pump. The engine and the water pump are connected to form a first cooling circulation. The method includes: controlling the water pump according to a current temperature of the engine, a total engine power, and a current vehicle speed. In response to that a current temperature of the engine is less than or equal to a temperature threshold, a total engine power is greater than or equal to a power threshold, and a current vehicle speed is less than or equal to a vehicle speed threshold, controlling the water pump to periodically switch between a start state and a stop state.
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公开(公告)号：US20240010066A1
公开(公告)日：2024-01-11
申请号：US18372249
申请日：2023-09-25
Applicant: BYD COMPANY LIMITED
Inventor： Futang ZHU , Hui ZHANG , Chunsheng WANG
Abstract: A hydraulic system for a powertrain of a vehicle, the powertrain includes a drive motor, a generator, a clutch, or a transmission system. The hydraulic system includes: an oil tank; a main cooling oil path, a first end of the main cooling oil path being communicated with the oil tank, where a first oil pump and a cooler are disposed on the main cooling oil path; and multiple cooling branches, the cooling branches connected to a second end of the main cooling oil path, the first oil pump configured to pump an oil in the oil tank to the cooling branches, a control element disposed on each of the cooling branches, the control element configured to control opening and closing of a corresponding cooling branch, and the cooling branches configured to cool one or more of the drive motor, the generator, the clutch, and the transmission system.
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公开(公告)号：US20240351574A1
公开(公告)日：2024-10-24
申请号：US18759757
申请日：2024-06-28
Applicant: BYD COMPANY LIMITED
Inventor： Rujie LIU , Chunsheng WANG , Boliang XU , Xinli CHEN
CPC classification number: B60W20/40 , B60W10/06 , B60W10/30 , B60W2050/0083 , B60W2400/00 , B60W2510/087 , B60W2510/30 , B60W2710/0644 , B60W2710/0677 , B60W2710/30
Abstract: A method for cooling a driving motor with a locked rotor of a vehicle is disclosed. The vehicle includes the driving motor, an engine, an engine end oil pump, and a cooling flow path. The engine is configured to drive the engine end oil pump, and the cooling flow path connects the engine end oil pump to the driving motor. The method includes: in response to determining that a driving mode of the vehicle is an electric mode and that the vehicle meets a locked rotor motor trigger condition, and detecting that a current temperature of the driving motor is greater than an auxiliary cooling starting temperature of the engine, controlling the engine to start to cause the engine end oil pump to drive a coolant in the cooling flow path to cool the driving motor.
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Patent Agency Ranking
公开(公告)号：US20240097599A1
公开(公告)日：2024-03-21
申请号：US18524070
申请日：2023-11-30
Applicant: BYD COMPANY LIMITED
Inventor： Chunsheng WANG , Boliang XU , Wei XIONG , Tao QIN , An CAO
IPC: H02P29/032
CPC classification number: H02P29/032
Abstract: A method for protecting a motor from overloading includes: acquiring a present effective value of a phase current of a motor; performing time integration on the present effective value of the phase current, to obtain a first integral value; obtaining a first threshold; performing overload detection according to the first threshold and the first integral value; determining a target limiting current for operation of the motor if an overload occurs; and controlling the operation of the motor based on the target limiting current.
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7.发明申请公开(公告)号：US20250162570A1
公开(公告)日：2025-05-22
申请号：US19027208
申请日：2025-01-17
Applicant: BYD COMPANY LIMITED
Inventor： Dongsheng YANG , Futang ZHU , Chunsheng WANG , Tao SHEN , Jinlong WU
IPC: B60W20/13 , B60L58/14 , B60W40/076 , B60W40/105 , B60W40/107
Abstract: An energy management method for a vehicle, includes: acquiring a planned road of the vehicle, and identifying, according to condition data of the planned road, at least one predicted condition of the planned road; determining, according to condition data corresponding to each of the at least one predicted condition, a battery state of charge (SOC) range of the vehicle corresponding to each of the at least one predicted condition; determining, according to battery SOC ranges corresponding to the at least one predicted condition, multiple battery SOC paths, wherein a battery SOC path comprises initial values of the battery SOC corresponding to the at least one predicted condition and lines connecting the initial values; and determining, operation energy consumption corresponding to each of the battery SOC paths, selecting a optimal battery SOC path corresponding to a minimum operation energy consumption, and operating the vehicle according to the optimal battery SOC path.
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公开(公告)号：US20240356473A1
公开(公告)日：2024-10-24
申请号：US18758734
申请日：2024-06-28
Applicant: BYD COMPANY LIMITED
Inventor： Tao QIN , Chunsheng WANG , Boliang XU , Wei XIONG , An CAO
CPC classification number: H02P23/14 , B60L15/20 , B60L2240/423
Abstract: A vehicle includes a motor and a motor controller. A damping control method for the vehicle includes: obtaining a rotation speed of the motor; filtering the rotation speed through a first low-pass filter to obtain a first filtered rotation speed, filtering the rotation speed through a second low-pass filter to obtain a second filtered rotation speed, and obtaining, by a vehicle controller, a rotation speed fluctuation value based on the first filtered rotation speed and the second filtered rotation speed; obtaining, by the vehicle controller, an active damping adjustment coefficient and an active damping clipped torque based on the rotation speed; obtaining, by the vehicle controller, an active damping torque based on the rotation speed fluctuation value, the active damping adjustment coefficient, and the active damping clipped torque; and controlling, by the motor controller, the motor based on the active damping torque.
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公开(公告)号：US20230278561A1
公开(公告)日：2023-09-07
申请号：US18315612
申请日：2023-05-11
Applicant: BYD COMPANY LIMITED
Inventor： Futang ZHU , Yawei LIU , Chunsheng WANG
CPC classification number: B60W30/18127 , B60W40/06 , B60W2510/083 , B60W2710/18 , B60W2710/242
Abstract: An energy recovery method and device, an electric vehicle, and a storage medium are provided. The energy recovery method includes: acquiring vehicle travelling information, wherein the vehicle travelling information comprises road condition information and travelling status information; acquiring a vehicle braking demand according to the road condition information and the travelling status information; predicting a first motor braking feedback according to the vehicle braking demand; and performing energy recovery according to the first motor braking feedback.
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公开(公告)号：US20240018894A1
公开(公告)日：2024-01-18
申请号：US18373233
申请日：2023-09-26
Applicant: BYD COMPANY LIMITED
Inventor： Futang ZHU , Chunsheng WANG , Qiuping HUANG
CPC classification number: F01P7/165 , F01P5/10 , F01P5/02 , F01P2025/64 , F01P2025/13
Abstract: A thermal management and control method includes: determining a total target amount of to-be-dissipated heat of an engine based on a minimum engine fuel consumption lookup table when a current temperature of the engine is greater than or equal to a temperature threshold and an opening degree of the thermostat is greater than or equal to an opening degree threshold; querying a minimum thermal management system power consumption lookup table based on the total target amount of to-be-dissipated heat, an air inlet speed of an air-cooling radiator, and a current ambient temperature, and determining a target rotation speed of a water pump and a target rotation speed of the air-cooling radiator; and controlling a rotation speed of the water pump to be the target rotation speed of the water pump, and controlling a rotation speed of the air-cooling radiator to be the target rotation speed of the air-cooling radiator.
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