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EP-4181364-B1 - MOTOR CONTROLLER WITH ANNULAR CIRCUIT LAYOUT, DRIVE ASSEMBLY AND VEHICLE

EP4181364B1EP 4181364 B1EP4181364 B1EP 4181364B1EP-4181364-B1

Inventors

  • JIANG, GUIBIN
  • LIU, HONGXIN
  • LI, HONGYU
  • WEI, Biao
  • MO, Lixiong

Dates

Publication Date
20260506
Application Date
20201116

Claims (10)

  1. A motor controller (3) with an annular circuit layout, wherein the motor controller (3) comprises a laminated busbar assembly (4) and multiple power transistors (34), wherein the laminated busbar assembly (4) comprises a main circuit board (43), a positive electrode connection plate (41), a negative electrode connection plate (42), and a three-phase connection plate assembly (44); the main circuit board (43), the positive electrode connection plate (41) and the negative electrode connection plate (42) are each circular; an outer edge of the positive electrode connection plate (41) is provided with multiple positive electrode pins (411) in a circumferential direction of the positive electrode connection plate (41), and an outer edge of the negative electrode connection plate (42) is provided with multiple negative electrode pins (421) in a circumferential direction of the negative electrode connection plate (42); the three-phase connection plate assembly (44) comprises three single-phase connection plates (441), which are each arcuate; and an outer edge of each of the single-phase connection plates (441) is provided with multiple single-phase pins (442) in a circumferential direction of the each of the single-phase connection plates (441); a center of the positive electrode connection plate (41) is provided with a first collision avoidance hole (410) and an inner edge of the positive electrode connection plate (41) is provided with positive electrode connection terminals (419); a center of the negative electrode connection plate (42) is provided with a second collision avoidance hole (426) and an inner edge of the negative electrode connection plate (42) is provided with negative electrode connection terminals (427); and an inner edge of each of the single-phase connection plates (441) is provided with a single-phase connection terminal (445); the main circuit board (43), the three-phase connection plate assembly (44), the negative electrode connection plate (42) and the positive electrode connection plate (41) are laminated in sequence along an axial direction of the motor controller (3); and the three single-phase connection plates (441) are coplanar; the main circuit board (43) is provided with a connection position (431), a control circuit position (432), a first soldering position (433), and a second soldering position (434); the connection position (431) is located in a center of the main circuit board (43); the control circuit position (432) surrounds the connection position (431); the first soldering position (433) surrounds the control circuit position (432); and the second soldering position (434) surrounds the first soldering position (433); and projection planes of the positive electrode connection terminals (419), the negative electrode connection terminals (427), and the single-phase connection terminals (445), which are perpendicular to an axial direction of the motor controller (3), are located inside a projection plane of the connection position (431) perpendicular to the axial direction; the multiple positive electrode pins (411), the multiple negative electrode pins (421) and the multiple single-phase pins (442) are electrically connected with the main circuit board (43) at the first soldering position (433); and multiple power transistors (34) surround the main circuit board (43), and are electrically connected with the main circuit board (43) at the second soldering position (434).
  2. The motor controller (3) according to claim 1, wherein the multiple power transistors (34) are evenly distributed along a same circumferential direction of the main circuit board (43).
  3. The motor controller (3) according to claim 1, wherein the multiple positive electrode pins (411), the multiple negative electrode pins (421) and the multiple single-phase pins (442) are arranged along a same circumferential direction of the main circuit board (43).
  4. The motor controller (3) according to claim 1, wherein the motor controller (3) comprises multiple capacitors (45), which are located and connected between the negative electrode connection plate (42) and the positive electrode connection plate (41).
  5. The motor controller (3) according to claim 4, wherein projection planes of the capacitors (45) perpendicular to the axial direction are located inside a projection plane of the control circuit position (432) perpendicular to the axial direction.
  6. The motor controller (3) according to any one of claims 1 to 5, wherein the three single-phase connection terminals (445) are circumferentially evenly distributed; and the motor controller (3) further comprises three Hall elements (46), which are provided at the three single-phase connection terminals (445), respectively.
  7. The motor controller (3) according to claim 6, wherein one positive electrode connection terminal (419) and one negative electrode connection terminal (427) are located between two adjacent single-phase connection terminals (445).
  8. The motor controller (3) according to claim 7, wherein the positive electrode connection plate (41) is provided with three positive electrode connection terminals (419), and the negative electrode connection plate (42) is provided with three negative electrode connection terminals (427); and the positive electrode connection terminals (419) and the negative electrode connection terminals (427) are alternated circumferentially.
  9. A drive assembly, comprising the motor controller (3) according to any one of claims 1 to 8.
  10. A vehicle, comprising the drive assembly according to claim 9.

Description

TECHNICAL FIELD The present disclosure relates to the field of new energy, and in particular to a motor controller, a drive assembly, and a vehicle. The present disclosure claims priorities to Chinese Patent Application Nos. CN201911247127.2, CN201911247126.8, CN201911246892.2, CN201911246844.3, CN201911247025.0, CN201922178663.3, CN201922178661.4, CN201922178480.1, CN201922178476.5, CN201922180773.3, and CN201922178390.2, filed on December 6, 2019. BACKGROUND New energy vehicles are environmentally friendly and low-polluting because they do not use gasoline or diesel as fuel to produce power. With the vigorous promotion of new energy power generation technologies using water energy, wind energy, solar energy, and nuclear energy, new energy vehicles are gradually promoted. There are various types of new energy vehicles, including new energy electric cars, new energy electric buses, new energy electric trucks, new energy electric cleaning vehicles, new energy electric rail vehicles, new energy electric flying vehicles, and new energy electric shipping vehicles. The new energy vehicle is generally equipped with batteries, a motor controller, a motor and power generation devices. Power transistors in the motor controller receive direct current (DC) output from the battery, and invert the DC into alternating current (AC) for outputting to the motor. The motor outputs a rotational driving force to drive the power generation devices, such as wheels and blades, thereby driving the vehicle to travel. The drive assembly (i.e. the motor and the motor controller) in the vehicle can be integrated to reduce its footprint, so as to free up more space for passengers, batteries, etc. In the case where the motor and the motor controller are integrated, to achieve an efficient integration of the drive assembly, it is necessary to consider an optimization of connection structures and related layout between the motor and the motor controller, cooling of the motor and the motor controller, optimal layout of related electrical connection structures, and an easiness of assembly of related components. Application with publication number of US2006/002054A1 disclosed an electric machine including multiple windings, a switch circuit connected to each of the windings, a positive bus bar, and a negative bus bar. The switch circuits are in communication with the windings to selectively energize each of the windings. The positive bus bar is a conductive plate connected to the switch circuits and the negative bus bar is a conductive plate positioned substantially parallel to the positive bus bar and connected electrically to the switch circuits. Application with publication number of FR3044837A1 disclosed an electrical connector intended to be electrically connected to at least a first electronic unit and to a source of electrical energy, the electrical connector comprising: at least one first trace of power to be electrically connected to a pole of positive polarity of the electric power source, and at least a second power trace to be electrically connected to a pole of negative polarity of the electric power source, wherein the at least first and second power traces are overmolded at least in part of electrically insulating material, the electrical connector comprising a substantially flat portion, and comprising: at least one through hole for receiving at least one electrical connection member of the at least one first electronic unit with at least one second electronic unit. Application with publication number of US2018/153032A1 disclosed a semiconductor device which includes: a substrate that is annular or partially annular; a first phase control circuit provided on the substrate, the first phase control circuit being configured to control a first phase of a plurality of phases of a motor; a second phase control circuit provided on the substrate so as to be adjacent to the first phase control circuit in a circumferential direction of the substrate, the second phase control circuit being configured to control a second phase of the plurality of phases of the motor, the second phase being different from the first phase; a power supply wiring disposed on one of an outer circumferential side and an inner circumferential side of the first phase control circuit and the second phase control circuit in a radial direction of the substrate, the power supply wiring being connected to the first phase control circuit and the second phase control circuit, and the power supply wiring extending in the circumferential direction of the substrate; and a ground winding disposed on an other one of the outer circumferential side and the inner circumferential side of the first phase control circuit and the second phase control circuit in the radial direction of the substrate, the ground winding being connected to the first phase control circuit and the second phase control circuit, and the ground winding extending in the circumferential direction of the sub