CN212588228U

CN212588228U - Motor of integrated controller

Info

Publication number: CN212588228U
Application number: CN202021876920.7U
Authority: CN
Inventors: 赵振涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-02-23
Anticipated expiration: 2030-09-01

Abstract

The utility model discloses a motor of an integrated controller, which comprises a motor stator rotating shaft, wherein a cavity is arranged in the middle of the motor stator rotating shaft; the motor controller circuit board is placed in a rotating shaft cavity of the motor stator, so that the space occupied by the controller is reduced, and meanwhile, the lead-out of a wire harness is reduced; the MOS tube is arranged in the heat conduction module, so that the heat dissipation capacity is improved, the miniaturization of the controller is conveniently realized, and the controller can be integrated into a rotating shaft of the motor. By adopting the motor of the integrated controller, the heat dissipation channel of the power device is optimized; and through integrating the controller to the motor shaft, more device spaces are provided for the battery, and longer cruising ability can be provided for products.

Description

Motor of integrated controller

Technical Field

The utility model relates to an integration of a motor and a control system; power devices including motor products are used. To the miniaturization of motor drive systems: arranging a controller circuit board in a rotating shaft of a motor; the ceramic-based circuit board with good heat dissipation effect is adopted, and the power device is firstly welded on the ceramic-based circuit board to form the power device module.

Background

With the advance of technology, power tubes are used in electronic products in large quantities. MOS tubes are commonly used; the MOS transistor is also called as a field effect transistor; it has many uses, mainly used as switch component. MOS transistors are used in large numbers in motor control.

The MOS transistor generates heat during the controlled switching process, and the heat generation is disadvantageous to the product and the component itself. The solution is mainly two aspects: firstly, the conduction resistance of the MOS tube is reduced, and the method has technical limitation; secondly, the heat sink is additionally arranged outside, so that the cost and the product volume are increased, and an additional production process is required for completion.

The ceramic-based circuit board is a special process board in which copper foil is directly bonded to the surface of a ceramic substrate at high temperature. The prepared composite substrate has excellent electrical insulation performance and high heat conduction characteristic. The ceramic-based circuit board comprises a ceramic base layer and a circuit layer.

In the motor control systems of the existing electric scooter and electric bicycle, the controller is independent, and the controller is independently arranged and occupies space; the communication and control of the controller and the motor are realized by leading out and connecting wires; especially, the electric scooter and the low-power electric bicycle have limited space, and the controller occupies the installation space of the battery.

Disclosure of Invention

In view of the above problems, the present invention is directed to a motor with an integrated controller, in which a motor driver circuit board is mounted in a cavity in the middle of a motor stator rotating shaft; the miniaturization of the controller is conveniently realized through a modular device of the power device, so that the controller can be integrated into a rotating shaft of the motor.

In order to realize the technical purpose, the utility model discloses a motor of an integrated controller, which comprises a motor stator rotating shaft, wherein a cavity is arranged in the middle of the motor stator rotating shaft; the motor stator rotating shaft cavity is arranged in the motor stator rotating shaft cavity; the MOS transistor further comprises two or more than two groups of MOS transistors; the MCU is welded on a circuit layer of the controller circuit board and is correspondingly connected with input driving pins of two or more than two groups of MOS tubes respectively; the winding coil is correspondingly connected with the driving output pins of two or more than two groups of MOS tubes. The controller circuit is electrically connected to an external battery via a wiring harness 6.

Preferably, the controller further comprises a ceramic-based circuit board, and a set of two or more than two MOS transistors soldered on the circuit layer of the ceramic-based circuit board and connected to a set of metal pins soldered on the ceramic-based circuit board, and the other ends of the set of metal pins are soldered on the circuit layer of the controller circuit board; and the driving output pins of the two or more than two groups of MOS tubes are correspondingly connected with the winding coil of the motor through corresponding pins of a group of metal pins welded on the ceramic-based circuit board.

Preferably, the ceramic-based circuit board used may be a metal-based circuit board.

The beneficial effects of this technical scheme are: the heat dissipation channels of a plurality of MOS tubes in the controller circuit can be optimized, the working efficiency of the MOS tubes is enhanced, and the size of the controller circuit board is reduced; simultaneously, the workload required by production is reduced; through integrated controller to the motor shaft in, saved product space, provide more spaces for the battery, increase the duration of products such as electric scooter, electric bicycle.

Drawings

Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention.

Fig. 2 is a schematic diagram of the structure in the cavity of the rotating shaft of the MOS transistor with the ceramic-based circuit board device.

Fig. 3 is a reference circuit diagram of a MOS transistor portion of a three-phase driving circuit according to a second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the motor of the integrated controller of the present invention includes a motor stator rotating shaft 1, and a cavity 11 is disposed in the middle of the motor stator rotating shaft 1; the motor stator shaft cavity comprises a motor stator shaft cavity body 11, and is characterized by also comprising a controller circuit board 2, wherein the controller circuit board 2 is placed in the motor stator shaft cavity body 11; the device also comprises two or more than two groups of MOS tubes 3; the MCU4 is further included, the MCU4 is welded on the circuit layer of the controller circuit board 2 and is respectively and correspondingly connected with the input driving pins of two or more groups of MOS tubes 3; the motor further comprises a winding coil 5 of the motor, and the winding coil 5 is correspondingly connected with the driving output pins of two or more than two groups of MOS tubes 3.

As shown in fig. 2, a schematic diagram of the structure inside the cavity of the rotating shaft of the MOS transistor of the ceramic-based circuit board device is shown. The controller also comprises a ceramic-based circuit board 7, and two or more than two groups of MOS (metal oxide semiconductor) tubes 3 which are welded on the circuit layer of the ceramic-based circuit board 7 and correspondingly connected with a group of metal pins 8 welded on the ceramic-based circuit board 7, wherein the other ends of the group of metal pins 8 are welded on the circuit layer of the controller circuit board 2; the driving output pins of a group of two or more than two MOS tubes 3 are correspondingly connected with the winding coil 5 of the motor through corresponding pins of a group of metal pins 8 welded on the ceramic-based circuit board 7. The ceramic substrate layer side of the ceramic substrate circuit board 7 is attached to the cavity 11 of the motor stator rotating shaft 1, and a heat dissipation channel is established through the metal motor stator rotating shaft 1.

As shown in fig. 3, a reference circuit diagram of a MOS transistor portion of a three-phase driving circuit according to a second embodiment of the present invention is shown. Comprises six MOS devices; the motor driving circuit is widely used in a motor driving circuit and is applied to a variable frequency controller.

The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.

Claims

1. An integrated controller motor, comprising: the motor stator comprises a motor stator rotating shaft, wherein a cavity is arranged in the middle of the motor stator rotating shaft; the motor stator rotating shaft cavity is arranged in the motor stator rotating shaft cavity; the MOS transistor further comprises two or more than two groups of MOS transistors; the MCU is welded on a circuit layer of the controller circuit board and is correspondingly connected with input driving pins of two or more than two groups of MOS tubes respectively; the winding coil is correspondingly connected with the driving output pins of two or more than two groups of MOS tubes.

2. The controller-integrated motor according to claim 1, wherein: the controller also comprises a ceramic-based circuit board and two or more than two groups of MOS (metal oxide semiconductor) tubes, wherein the two or more than two groups of MOS tubes are welded on the circuit layer of the ceramic-based circuit board and are correspondingly connected with one group of metal pins welded on the ceramic-based circuit board, and the other ends of the group of metal pins are welded on the circuit layer of the controller circuit board; and the driving output pins of the two or more than two groups of MOS tubes are correspondingly connected with the winding coil of the motor through corresponding pins of a group of metal pins welded on the ceramic-based circuit board.

3. The controller-integrated motor according to claim 2, wherein: the ceramic-based circuit board used can be replaced with a metal-based circuit board.