公开(公告)号：EP3992014A1

公开(公告)日：2022-05-04

申请号：EP20835114.8

申请日：2020-06-24

Applicant: BYD Company Limited

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

IPC: B60L53/00

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：EP4019322A1

公开(公告)日：2022-06-29

申请号：EP20869465.3

申请日：2020-08-18

Applicant: BYD Company Limited

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

IPC: B60L58/27

Abstract: A cooperative control method 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 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 PWM rectifier according to the above information.

公开(公告)号：EP4043254A1

公开(公告)日：2022-08-17

申请号：EP20867338.4

申请日：2020-08-18

Applicant: BYD Company Limited

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

IPC: B60H1/02 ,  B60L15/20 ,  B60L58/27

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 windings 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 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 is zero.

公开(公告)号：EP4016806A1

公开(公告)日：2022-06-22

申请号：EP20853507.0

申请日：2020-08-13

Applicant: BYD Company Limited

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

IPC: H02K3/04

Abstract: The disclosure relates to the field of electronic technologies, and provides a motor and an energy conversion device therefor. The motor includes a motor coil. The motor coil includes x sets of windings. A number of phases of the x sets of windings is m x . In each of the x sets of windings, each phase winding includes n x coil branches. A first end of each of the n x coil branches of each phase winding is connected with a first end of a coil branch separated from the coil branch by an electrical angle of 360 degrees, to form m x phase endpoints. A second end of each of the n x coil branches of each phase winding is further connected with a second end of a coil branch separated from the coil branch by an electrical angle of P ∗ (360 ∗ k 1 + 360/m x ) degrees to form n x neutral points, n x ≥ m x ≥ 2, n x ≥ 3, p = ± 1, 1 ≤ k 1 ≤ ( n x -1), and m x n x , and k 1 are all integers.

公开(公告)号：EP4033630A1

公开(公告)日：2022-07-27

申请号：EP20867753.4

申请日：2020-08-18

Applicant: BYD Company Limited

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

IPC: H02J7/00 ,  B60R16/03 ,  H02P27/06

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 battery (2) and a second end of the battery (2) respectively, and a second end of the first DC charging and discharging port (3) is connected with the second end of the battery (2).

公开(公告)号：EP4015297A1

公开(公告)日：2022-06-22

申请号：EP20852950.3

申请日：2020-08-13

Applicant: BYD Company Limited

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

IPC: B60L58/10 ,  H02M3/155 ,  H02M7/797 ,  H02J7/00

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.