WO2017133476A1 - 一种集成式电机 - Google Patents

一种集成式电机 Download PDF

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Publication number
WO2017133476A1
WO2017133476A1 PCT/CN2017/071730 CN2017071730W WO2017133476A1 WO 2017133476 A1 WO2017133476 A1 WO 2017133476A1 CN 2017071730 W CN2017071730 W CN 2017071730W WO 2017133476 A1 WO2017133476 A1 WO 2017133476A1
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Prior art keywords
shaft
rotor
stator
controller
electric machine
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PCT/CN2017/071730
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English (en)
French (fr)
Inventor
王海斌
裴正强
余平
Original Assignee
精进电动科技股份有限公司
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Application filed by 精进电动科技股份有限公司 filed Critical 精进电动科技股份有限公司
Priority to EP17746796.6A priority Critical patent/EP3396824A4/en
Priority to US16/074,782 priority patent/US11289983B2/en
Priority to JP2018540788A priority patent/JP2019509002A/ja
Publication of WO2017133476A1 publication Critical patent/WO2017133476A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/06—Machines characterised by the presence of fail safe, back up, redundant or other similar emergency arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/12—Machines characterised by the modularity of some components

Definitions

  • the invention relates to the field of electromechanical, in particular to an integrated electric machine.
  • the motor is the core drive unit of the new energy vehicle. If the drive motor fails, the whole vehicle loses its basic function. In the prior art, two simple series-connected drive motors are installed in some automobiles, and when one of the motors fails, another motor can be used to maintain operation. However, the technical solution of the two motors in series greatly increases the axial size and weight of the motor.
  • the present invention provides an integrated motor to solve the problem that the two motors in series in the prior art increase the axial size and weight of the motor greatly.
  • the present invention provides an integrated electric machine including: a shaft, a first stator, a first rotor, a second stator, a second rotor, a first controller, a second controller, a power supply, and an outer casing.
  • the outer casing comprises: a middle casing and two end caps, the two end caps being mounted at two ends of the middle casing; two ends of the shaft are respectively fixed on the end cap;
  • the first rotor and the second rotor are fixedly mounted on the shaft, and the first stator and the second stator are fixed on an inner side wall of the middle casing and respectively associated with the first rotor and Corresponding to the second rotor position;
  • the power source is connected to the first controller and the second controller, the first controller is electrically connected to the first stator, and the second controller is electrically connected to the second stator;
  • the first controller and the second controller control rotational speeds of the first rotor and the second rotor by controlling currents in the first stator and the second stator.
  • the integrated motor further includes: two bearings,
  • the two bearings are respectively mounted on the two end caps, and two ends of the shaft are respectively fixed on the two bearings.
  • a shaft shoulder is further disposed on the shaft, and the first rotor and the second rotor are respectively mounted on the shaft by two ends of the shaft, and are respectively clamped on both sides of the shoulder.
  • the shaft is divided into two segments: a left segment and a right segment, the diameter of the left segment is smaller than the diameter of the right segment, and a card table is formed between the left segment and the right segment;
  • the second rotor is mounted to a right segment of the shaft by a left end of the shaft, the first rotor being The left end is mounted to the left section of the shaft and snaps onto the deck.
  • the middle casing is integrally formed.
  • the middle casing is composed of a left casing and a right casing
  • the first stator is fixed on the inner side wall of the left casing
  • the second stator is fixed to the right casing.
  • the integrated motor further includes an output flange mounted at one end of the shaft, the flange connecting an output shaft of the integrated motor.
  • the integrated motor further includes: N stators, N rotors, and N controllers.
  • the N rotors are fixedly mounted on the shaft, the N stators are fixed on the housing and respectively correspond to positions of the N rotors, and the N controllers and the N stators respectively Electrical connection, where N is a natural number.
  • An advantageous effect of the embodiment of the present invention is: an integrated motor provided by the present invention, the first rotor and the second rotor are mounted on the same shaft, and the first stator and the second stator are fixed on the inner side wall of the corresponding position of the outer casing,
  • the integrated motor is compact in structure, the axial size and weight are greatly reduced, and the output torque can be distributed through the first controller and the second controller, and the safety margin and reliability of the motor are high.
  • FIG. 1 is a cross-sectional view showing an integrated motor according to a first embodiment of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • FIG. 3 is a logic block diagram of an integrated motor according to Embodiment 1 of the present invention.
  • FIG. 4 is a cross-sectional view showing an integrated motor according to a second embodiment of the present invention.
  • 1, 9 are end caps, 2, 8 are bearings, 3 is a first stator, 4 is a first rotor, 5 is a second stator, 6 is a second rotor, 7 is a middle casing, 10, 10' For the shaft, 11 is the output flange, 12 is the shoulder, 13 is the left, 14 is the right, and 15 is the card.
  • FIG. 1 is a cross-sectional view of an integrated motor according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.
  • an embodiment of the present invention provides an integrated motor including: a shaft 10, a first stator 3, a first rotor 4, a second stator 5, and a second rotor. 6.
  • the first controller, the second controller, the power source, and the outer casing, the outer casing comprises: a middle casing 7 and two end covers (1, 9), and the two end covers (1, 9) are mounted on the central casing 7 At both ends, the middle housing 7 and the two end caps form an enclosed space.
  • the central casing 7 has a circular cross section, and may of course be provided in other shapes such as a square shape or the like.
  • the two ends of the shaft 10 are respectively fixed on the end cover, and the first rotor 4 and the second rotor 6 are fixedly mounted on the shaft 10.
  • the first stator 3 and the second stator 5 are fixed on the inner side wall of the middle casing 7 and respectively The first rotor 4 and the second rotor 6 are positioned correspondingly.
  • the power source is connected to the first controller and the second controller, the first controller is electrically connected to the first stator 3, the second controller is electrically connected to the second stator 5, and the first controller and the second controller are controlled by the first The currents in the stator 3 and the second stator 5 control the rotational speeds of the first rotor 4 and the second rotor 6.
  • FIG. 3 is a logic block diagram of an integrated motor according to Embodiment 1 of the present invention.
  • the first controller and the second controller are operated. Since the first controller is electrically connected to the first stator 3, the second controller is electrically connected to the second stator 5, and the first control is performed.
  • the second controller controls the rotational speeds of the first rotor 4 and the second rotor 6 by controlling the currents in the first stator 3 and the second stator 5. Since both the first rotor 4 and the second rotor 6 are fixedly coupled to the shaft 10 to collectively drive the shaft 10 to rotate and output torque, the sum of the torques generated by the first rotor 4 and the second rotor 6 is the total output torque of the shaft 10.
  • the first controller and the second controller respectively control the first rotor 4 and the second rotor 6 to generate different rotational speeds, so that the first rotor 4 and the second rotor 6 bear different torques.
  • the first controller and the second controller respectively control the first rotor 4 and the second rotor 6 to generate different rotational speeds, so that the first rotor 4 and the second rotor 6 bear different torques.
  • the first controller and the second controller respectively control the first rotor 4 and the second rotor 6 to generate different rotational speeds, so that the first rotor 4 and the second rotor 6 bear different torques.
  • the second rotor 6 and the second stator 5 can be controlled to be maintained by the second controller.
  • the operation can be maintained by the first rotor 4 and the second rotor 6.
  • the integrated motor is compact in structure, and the axial size and weight are greatly reduced.
  • the integrated motor further comprises: two bearings (2, 8), two bearings (2, 8) are respectively mounted on the two end covers (1, 9), the two ends of the shaft 10 They are respectively fixed to the two bearings (2, 8), and the bearings 10 and the rotation of the first rotor 4 and the second rotor 6 are supported by the bearings (2, 8).
  • the shaft 10 is further provided with a shoulder 12, and the first rotor 4 and the second rotor 6 are respectively mounted on the shaft 10 by the two ends of the shaft 10, and are respectively clamped on both sides of the shoulder 12.
  • the shaft 10 is provided with a shoulder 12 on the one hand to facilitate the isolation of the first rotor 4 and the second rotor 6, and on the other hand, the first rotor 4 and the second rotor 6 are respectively mounted from both ends of the shaft 10, which is more convenient to operate.
  • the middle casing 7 is integrally formed.
  • the middle casing 7 can also be composed of a combination of a left casing and a right casing. It is more convenient to operate when the first stator 3 and the second stator 5 are installed, that is, the first stator 3 is fixed on the inner side wall of the left casing.
  • the second stator 5 is fixed to the inner side wall of the right casing.
  • the integrated motor further includes an output flange 11 mounted on one end of the shaft 10, and an output flange 11 connected to the output shaft of the integrated motor.
  • the integrated motor further includes: N stators, N rotors, and N controllers, N rotors are fixedly mounted on the shaft 10, and N stators are fixed on the middle casing 7 and respectively Corresponding to the positions of the N rotors, the N controllers are electrically connected to the N stators respectively, where N is a natural number.
  • N stators are fixedly mounted on the shaft 10
  • N stators are fixed on the middle casing 7 and respectively
  • the N controllers are electrically connected to the N stators respectively, where N is a natural number.
  • FIG. 4 is a cross-sectional view showing an integrated motor according to a second embodiment of the present invention.
  • the difference between the second embodiment and the first embodiment is that the shaft 10' is divided into two segments: a left segment 13 and a right segment 14, the diameter of the left segment 13 is smaller than the diameter of the right segment 14, and a segment is formed between the left segment 13 and the right segment 14.
  • the second rotor 6 is mounted to the right section 14 of the shaft 10' by the left end of the shaft 10'.
  • the first rotor 4 is mounted to the left section 13 of the shaft 10' by the left end of the shaft 10' and is caught on the deck 15. .
  • the rest of the structure of the second embodiment is similar to that of the first embodiment, and details are not described herein again.
  • an embodiment of the present invention provides an integrated motor, in which the first rotor and the second rotor are mounted on the same shaft, and the first stator and the second stator are fixed to the outer casing.
  • the integrated motor On the inner side wall of the corresponding position, the integrated motor is compact in structure, the axial size and weight are greatly reduced, and the output torque can be distributed through the first controller and the second controller, and the safety margin and reliability of the motor are high.

Abstract

一种集成式电机，包括至少两套对应的定子（3,5）和转子（4,6），至少两套对应的定子和转子安装在同一外壳内部，并连接对应的控制器，转子安装在同一轴（10）上。电机总输出力矩可在不同的定子/转子进行分配，当其中一套或多套定子和转子故障时，剩余定子和转子维持运行。该集成式电机结构紧凑、轴向尺寸小、扭矩可分配、安全裕度高、可靠性高。

Description

一种集成式电机 技术领域
本发明涉及机电领域，特别涉及一种集成式电机。
发明背景
电机是新能源汽车的核心驱动单元，如果驱动电机发生故障，那么整车就丧失基本功能。现有技术中，某些汽车中安装两台简单串联的驱动电机，当其中一台电机发生故障时，可以使用另一台电机维持运行。但是两台电机串联的技术方案使电机的轴向尺寸和重量大大增加。
发明内容
鉴于上述问题，本发明提供了一种集成式电机，以解决现有技术中两台电机串联使电机的轴向尺寸和重量大大增加的问题。
为达到上述目的，本发明的技术方案是这样实现的：
本发明提供一种集成式电机，所述集成式电机包括：轴、第一定子、第一转子、第二定子、第二转子、第一控制器、第二控制器、电源、外壳，
所述外壳包括：中部壳体和两个端盖，所述两个端盖安装在所述中部壳体的两端；所述轴的两端分别固定在所述端盖上；
所述第一转子和所述第二转子固定安装在所述轴上，所述第一定子和所述第二定子固定在所述中部壳体内侧壁上并分别与所述第一转子和第二转子位置对应；
所述电源与所述第一控制器和所述第二控制器连接，所述第一控制器与所述第一定子电连接，所述第二控制器与所述第二定子电连接；
所述第一控制器和所述第二控制器通过控制所述第一定子和所述第二定子中的电流控制所述第一转子和所述第二转子的转速。
可选地，所述集成式电机还包括：两个轴承，
所述两个轴承分别安装在所述两个端盖上，所述轴的两端分别固定在所述两个轴承上。
可选地，所述轴上还设置有一轴肩，所述第一转子和第二转子分别由所述轴的两端安装至所述轴上，并分别卡在所述轴肩的两侧。
可选地，所述轴分为两段：左段和右段，所述左段的直径小于所述右段的直径，所述左段和所述右段之间形成一卡台；
所述第二转子由所述轴的左端安装至所述轴的右段，所述第一转子由所述轴的 左端安装至所述轴的左段并卡在所述卡台上。
可选地，所述中部壳体为一体成型。
可选地，所述中部壳体由左壳体和右壳体组合而成，所述第一定子固定在所述左壳体内侧壁上，所述第二定子固定在所述右壳体内侧壁上。
可选地，所述集成式电机还包括：输出法兰，所述输出法兰安装在所述轴的一端，所述法兰连接所述集成式电机的输出轴。
可选地，所述集成式电机进一步包括：N个定子、N个转子和N个控制器，
所述N个转子固定安装在所述轴上，所述N个定子固定在所述壳体上并分别与所述N个转子的位置对应，所述N个控制器分别与所述N个定子电连接，其中，N为自然数。
本发明实施例的有益效果是：本发明提供的一种集成式电机，第一转子和第二转子安装在同一轴上，第一定子和第二定子固定在外壳对应位置的内侧壁上，该集成式电机结构紧凑，轴向尺寸和重量大大减小，并且输出扭矩可通过第一控制器和第二控制器分配，电机的安全裕度和可靠性高。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。
附图简要说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本发明的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1为本发明实施例一的集成式电机的剖视图；
图2为图1的A-A面剖视图；
图3为本发明实施例一的集成式电机的逻辑框图；
图4为本发明实施例二的集成式电机的剖视图。
其中，1、9为端盖，2、8为轴承，3为第一定子，4为第一转子，5为第二定子，6为第二转子，7为中部壳体，10、10’为轴，11为输出法兰，12为轴肩，13为左段，14为右段，15为卡台。
实施本发明的方式
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公 开的示例性实施例，然而应当理解，可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本公开，并且能够将本公开的范围完整的传达给本领域的技术人员。
实施例一
图1为本发明实施例一的集成式电机的剖视图；图2为图1的A-A面剖视图。如图1和图2共同所示，本发明实施例一提供一种集成式电机，该集成式电机包括：轴10、第一定子3、第一转子4、第二定子5、第二转子6、第一控制器、第二控制器、电源、外壳，外壳包括：中部壳体7和两个端盖(1、9)，两个端盖(1、9)安装在中部壳体7的两端，中部壳体7和两个端盖构成一个封闭空间。如图2所示，在本发明实施例一中，中部壳体7的横截面为圆形，当然也可设置为其他形状，如方形等。
轴10的两端分别固定在端盖上，第一转子4和第二转子6固定安装在轴10上，第一定子3和第二定子5固定在中部壳体7内侧壁上并分别与第一转子4和第二转子6位置对应。电源与第一控制器和第二控制器连接，第一控制器与第一定子3电连接，第二控制器与第二定子5电连接；第一控制器和第二控制器通过控制第一定子3和第二定子5中的电流控制第一转子4和第二转子6的转速。
图3为本发明实施例一的集成式电机的逻辑框图。如图3所示，电源开启时，第一控制器和第二控制器运行，由于第一控制器与第一定子3电连接，第二控制器与第二定子5电连接，第一控制器和第二控制器通过控制第一定子3和第二定子5中的电流从而控制第一转子4和第二转子6的转速。由于第一转子4和第二转子6均与轴10固定连接，从而共同带动轴10转动并输出扭矩，第一转子4和第二转子6产生的扭矩之和即为轴10的总输出扭矩。当该集成式电机正常工作时，第一控制器和第二控制器分别控制第一转子4和第二转子6产生不同的转速，从而使第一转子4和第二转子6承担不同的扭矩，以利于发挥第一转子4和第二转子6的性能。
由上述可知，当该集成式电机中的第一转子4或第一定子3发生故障时，可由第二控制器控制第二转子6和第二定子5维持运行。同样地，当第二转子6或第二定子5发生故障时，可由第一转子4和第二转子6维持运行。由此提高了该集成式电机的可靠性和安全裕度。此外，由于第一转子和第二转子安装在同一轴上，并和第一定子和第二定子共同安装在同一外壳内，因此该集成式电机结构紧凑，轴向尺寸和重量大大减小。当该集成式电机应用至新能源汽车上时，由于电机是核心驱动单元，因此可提高整车的可靠性并且大大减小整车的重量。
在本发明实施一中，该集成式电机还包括：两个轴承(2、8)，两个轴承(2、8)分别安装在两个端盖(1、9)上，轴10的两端分别固定在两个轴承(2、8)上，由轴承(2、8)支撑轴10以及第一转子4和第二转子6的转动。
在本发明实施一中，轴10上还设置有一轴肩12，第一转子4和第二转子6分别由轴10的两端安装至轴10上，并分别卡在轴肩12的两侧。轴10上设置轴肩12，一方面便于将第一转子4和第二转子6隔离开，另一方面从轴10的两端分别安装第一转子4和第二转子6，操作更为方便。
在本发明实施一中，中部壳体7为一体成型。中部壳体7也可由左壳体和右壳体组合而成，安装第一定子3和第二定子5时操作更为方便，即第一定子3固定在左壳体的内侧壁上，第二定子5固定在右壳体的内侧壁上。
在本发明实施一中，该集成式电机还包括：输出法兰11，输出法兰11安装在轴10的一端，输出法兰11连接集成式电机的输出轴。
在本发明的实施一中，上述集成式电机进一步包括：N个定子、N个转子和N个控制器，N个转子固定安装在轴10上，N个定子固定在中部壳体7上并分别与N个转子的位置对应，N个控制器分别与N个定子电连接，其中，N为自然数。当其中一套或多套对应的定子和转子故障时，剩余的定子和转子维持运行，由此进一步提高该集成式电机的安全裕度和可靠性。
实施例二
图4为本发明实施例二的集成式电机的剖视图。实施例二与实施例一的区别在于，轴10’分为两段：左段13和右段14，左段13的直径小于右段14的直径，左段13和右段14之间形成一卡台15；第二转子6由轴10’的左端安装至轴10’的右段14，第一转子4由轴10’的左端安装至轴10’的左段13并卡在卡台15上。实施例二的其余结构与实施例一类似，此处不再赘述。
综上所述，本发明实施例的有益效果是：本发明实施例提供的一种集成式电机，第一转子和第二转子安装在同一轴上，第一定子和第二定子固定在外壳对应位置的内侧壁上，该集成式电机结构紧凑，轴向尺寸和重量大大减小，并且输出扭矩可通过第一控制器和第二控制器分配，电机的安全裕度和可靠性高。
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等，均包含在本发明的保护范围内。

Claims (8)

  1. 一种集成式电机，所述集成式电机包括：轴、第一定子、第一转子、第二定子、第二转子、第一控制器、第二控制器、电源、外壳，
    所述外壳包括：中部壳体和两个端盖，所述两个端盖安装在所述中部壳体的两端；所述轴的两端分别固定在所述两个端盖上；
    所述第一转子和所述第二转子固定安装在所述轴上，所述第一定子和所述第二定子固定在所述中部壳体内侧壁上并分别与所述第一转子和所述第二转子位置对应；
    所述电源与所述第一控制器和所述第二控制器连接，所述第一控制器与所述第一定子电连接，所述第二控制器与所述第二定子电连接；
    所述第一控制器和所述第二控制器通过控制所述第一定子和所述第二定子中的电流控制所述第一转子和所述第二转子的转速。
  2. 根据权利要求1所述的集成式电机，其特征在于，所述集成式电机还包括：两个轴承，
    所述两个轴承分别安装在所述两个端盖上，所述轴的两端分别固定在所述两个轴承上。
  3. 根据权利要求2所述的集成式电机，其特征在于，所述轴上还设置有一轴肩，所述第一转子和第二转子分别由所述轴的两端安装至所述轴上，并分别卡在所述轴肩的两侧。
  4. 根据权利要求2所述的集成式电机，其特征在于，所述轴分为两段：左段和右段，所述左段的直径小于所述右段的直径，所述左段和所述右段之间形成一卡台；
    所述第二转子由所述轴的左端安装至所述轴的右段，所述第一转子由所述轴的左端安装至所述轴的左段并卡在所述卡台上。
  5. 根据权利要求1所述的集成式电机，其特征在于，所述中部壳体为一体成型。
  6. 根据权利要求1所述的集成式电机，其特征在于，所述中部壳体由左壳体和右壳体组合而成，所述第一定子固定在所述左壳体内侧壁上，所述第二定子固定在所述右壳体内侧壁上。
  7. 根据权利要求3或4所述的集成式电机，其特征在于，所述集成式电机还包括：输出法兰，所述输出法兰安装在所述轴的一端，所述输出法兰连接所述集成 式电机的输出轴。
  8. 根据权利要求1-7任一项所述的集成式电机，其特征在于，所述集成式电机进一步包括：N个定子、N个转子和N个控制器，
    所述N个转子固定安装在所述轴上，所述N个定子固定在所述壳体上并分别与所述N个转子的位置对应，所述N个控制器分别与所述N个定子电连接，其中，N为自然数。
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