公开(公告)号：US20220348094A1

公开(公告)日：2022-11-03

申请号：US17763916

申请日：2020-08-18

Applicant: BYD COMPANY LIMITED

Inventor： Hua PAN ,  Jicheng LI ,  Feiyue XIE ,  Yuxin ZHANG ,  Ning YANG

IPC: B60L53/24 ,  B60H1/00 ,  B60L58/26 ,  B60L58/27 ,  B60R16/033 ,  H02M7/797 ,  H02P25/22

Abstract: An energy conversion device is provided. The device includes: a reversible pulse width modulation (PWM) rectifier (11) and a motor coil (12), where the motor coil (12) includes at least a first winding unit and a second winding unit, and the first winding unit and the second winding unit are both connected with the reversible PWM rectifier (11). The first winding unit is connected with at least one of neutral lines in the second winding unit, where at least one neutral line of at least one of the winding units is connected with a first end of a first direct current (DC) charging and discharging port (3), the reversible PWM rectifier (11) is connected with a first end of a external battery (2) and a second end of the external battery (2) respectively, and a second end of the first DC charging and discharging port (3) is connected with the second end of the external battery (2).

公开(公告)号：US20220329184A1

公开(公告)日：2022-10-13

申请号：US17764038

申请日：2020-08-18

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Jicheng LI ,  Hua PAN ,  Li MOU

IPC: H02P21/14 ,  B60L58/10

Abstract: A cooperative control method for an energy conversion apparatus is disclosed. The cooperative control method includes: acquiring a target heating power, a target driving power, and a target charging and discharging power; acquiring a first heating power of a motor coil according to the target charging and discharging power; acquiring a second heating power of the motor coil according to the target driving power; adjusting a first quadrature axis current and a first direct axis current to a target quadrature axis current and a target direct axis current when a difference between a sum of the first heating power and the second heating power and the target heating power is not within a preset range, to cause the difference between the sum of the first heating power and the second heating power and the target heating power to be within the preset range; and acquiring a sampling current value on each phase coil and a motor rotor position, and calculating a duty cycle of each phase bridge arm in a reversible pulse width modulation (PWM) rectifier.

公开(公告)号：US20220294380A1

公开(公告)日：2022-09-15

申请号：US17635636

申请日：2020-08-13

Applicant: BYD COMPANY LIMITED

Inventor： Feiyue XIE ,  Changjiu LIU ,  Jicheng LI ,  Lei HU ,  Yihao ZHENG

IPC: H02P27/08 ,  H02K3/28 ,  H02J7/00 ,  H02J7/02 ,  H02M7/797 ,  H02M1/14

Abstract: The disclosure provides a motor and an energy conversion device. The motor includes a motor coil having x sets of windings. A number of phases of the x sets of windings is mx. In each of the x sets of windings, each phase winding includes nx coil branches. A first end of each of the nx coil branches is connected with a first end of a coil branch separated from the coil branch by an electrical angle of 360 degrees, to form mx phase endpoints. A second end of each of the nx coil branches of each phase winding is connected with a second end of a coil branch separated from the coil branch by an electrical angle of P*(360*k1+360/mx) degrees to form nx neutral points, nx≥mx≥2, nx≥3, p=±1, 1≤k1≤(nx−1), and mx, nx, and k1 are integers.

公开(公告)号：US20220355674A1

公开(公告)日：2022-11-10

申请号：US17622626

申请日：2020-06-24

Applicant: BYD COMPANY LIMITED

Inventor： Lei YAN ,  Jicheng LI ,  Ye LEI ,  Feiyue XIE ,  Sijia ZHENG

IPC: B60L15/20 ,  B60L53/24

Abstract: An energy conversion apparatus and a vehicle are provided. The energy conversion apparatus includes a motor coil of a motor (101), a bridge arm converter (102), a bus capacitor (103) connected to the bridge arm converter (102) in parallel, and a controller (104) connected to the bridge arm converter (102). When the energy conversion apparatus is connected to an external power supply, according to to-be-driven power of the motor and to-be-charged power of an external battery (105), the controller (104) controls the bridge arm converter (102) to cause electrical energy of the external power supply to flow to a drive-charging circuit, and adjusts a current of the drive-charging circuit, to cause the external power supply to drive the motor to output drive power and charge the external battery (105) at the same time.

公开(公告)号：US20220329195A1

公开(公告)日：2022-10-13

申请号：US17763962

申请日：2020-08-18

Applicant: BYD COMPANY LIMITED

Inventor： Heping LING ,  Jicheng LI ,  Changjiu LIU ,  Feiyue XIE ,  Yuxin ZHANG

IPC: H02P27/08 ,  B60L53/22 ,  B60L1/02 ,  H02M7/797 ,  H02P25/22

Abstract: An energy conversion device is provided. The energy conversion device includes a reversible pulse-width modulation (PWM) rectifier (102) and a motor coil (103). The motor coil (103) includes L sets of winding units, and each set of winding unit is connected with the reversible PWM rectifier (102), where L≥2 and is a positive integer. At least two sets of heating circuits of a to-be-heated device are formed by an external power supply (100), the reversible PWM rectifier (102), and the winding units in the motor coil (103). The energy conversion device controls the reversible PWM rectifier (102) according to a control signal, so that a current outputted from the external power supply (100) flows through at least two sets of winding units in the motor coil (103) to generate heat, and cause a vector sum of resultant current vectors of the at least two sets of the winding units on a quadrature axis of a synchronous rotating reference frame based on rotor field orientation of the motor to be zero.

公开(公告)号：US20220289053A1

公开(公告)日：2022-09-15

申请号：US17635620

申请日：2020-08-13

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Jicheng LI ,  Hua PAN ,  Feiyue XIE

IPC: B60L53/24 ,  H02M7/797 ,  B60L53/22 ,  H02J7/00 ,  B60L58/14 ,  B60L58/15

Abstract: The present invention relates to the technical field of vehicles, and provides an energy conversion device and a vehicle. The energy conversion device includes a reversible pulse-width modulation (PWM) rectifier, a motor coil connected with the reversible PWM rectifier, a one-way conduction module, and a capacitor. A DC charging circuit or a DC discharging circuit is formed by an external DC port with an external battery by using the energy conversion device, and a driving circuit is formed by the external battery with the reversible PWM rectifier and the motor coil in the energy conversion device. The one-way conduction module is connected between a first end of the capacitor and a second end of the external DC port, or the one-way conduction module is connected between a second end of the capacitor and a first end of the external DC port.