TWM493815U - Rotor structure and integrated activation type motor-generator applying the rotor structure - Google Patents

Description

Rotor structure and application of the rotor structure

The present invention relates to a rotor structure and a rotor-type starter motor generator using the rotor structure, in particular a rotor having a special core structure.

In the development of power machinery, the design of Internal Combustion Engine (ICE) with materials, electromechanical and electronic development has promoted the development of hybrid vehicles such as oil and gas, which has been regarded as the height of energy consumption for transportation vehicles. Feasible solution. From a technical point of view, in the engine power architecture, in order to start the internal combustion engine, it is usually necessary to drive the engine to a certain speed through the starter motor and then ignite and actuate, and the generator can start generating electricity to charge the battery after the engine is working normally. However, in the traditional architecture, the engine uses separate starter motors and generators. Although this mechanism is simple, it will result in poor space utilization, which is not conducive to the lightweight design of the car body structure. The Integrated Starter Generator (ISG) integrates the starter motor and generator on the same motor, while achieving motor and generator functions, which increases engine space utilization.

Integrated starter motor generators typically include components such as rotors, stators, magnets, and coils. The magnet is usually inserted into the core of the rotor, such as steel. For example, Taiwanese patent M346976 is to arrange the magnets in a magnetic core in an in-line manner. However, the arrangement of the in-line magnets, the magnetic flux is less concentrated, and the performance of the motor still cannot meet the current needs. Taiwan Patent Publication No. 201328126 proposes a V-shaped arrangement. The arrangement of the V-shaped magnets can generate a higher magnetic flux, thereby improving the performance of the motor, but a sharp magnetic flux changes between the magnetic poles between the magnetic poles, which causes a large surge of back electromotive force. When the back electromotive force value is greater than the voltage given by the driving end, the motor cannot reach the designed rotational speed, which is extremely unfavorable for the motor performance.

This creation aims to solve the surge of counter electromotive force, so that the integrated starter motor generator can maintain the concentrated magnetic flux, but can control the back electromotive force within the range of less than the driving voltage, and reduce the influence of the counter electromotive force surge on the driving.

The main purpose of this creation is to provide a rotor structure. The rotor structure comprises an annular magnetic core and a plurality of magnet groups. The toroidal core includes a plurality of slot groups and a plurality of air slots, and the slot groups are arranged equidistantly and distributed on the toroidal core. The slot group includes a first slot and a second slot, and the first slot and the second slot are arranged in a V shape or a U shape. The air slot is located on the outer wall of the annular core, and the air slot is located between the two slot sets.

Each magnet group includes a first permanent magnet and a second permanent magnet, the first permanent magnet is inserted in the first slot, and the second permanent magnet is inserted in the first Among the two slots. By providing an air groove between the magnetic poles, it is possible to effectively suppress the sharp change of the magnetic flux, reduce the voltage harmonics, and improve the capability of high-speed weakening.

Another object of the present invention is to provide an integrated starter motor generator. The integrated starter motor generator includes the rotor structure described above, a stator, a shaft, and a winding set. The stator system is composed of a plurality of stator modules, and surrounds the rotor structure, and an insertion groove is formed between the two stator modules. Each winding group is located in the insertion groove, and the coils in each winding group are connected to each other. This can effectively increase the slot ratio, reduce the length of the end line, and improve manufacturability.

10‧‧‧Ring core

11‧‧‧Slot group

111‧‧‧First slot

113‧‧‧second slot

115‧‧‧First side wall

117‧‧‧ second side wall

13‧‧‧Air trough

131‧‧‧ bottom

133‧‧‧ first wall

135‧‧‧ second wall

20‧‧‧ Magnet group

21‧‧‧First permanent magnet

23‧‧‧Second permanent magnet

30‧‧‧Rotor cover

40‧‧‧Rotor bushing

50‧‧‧Resolver

55‧‧‧Center through hole

60‧‧‧Resolver retaining ring

70‧‧‧ Stator

71‧‧‧Station Module

73‧‧‧Insert slot

75‧‧‧ Winding group

80‧‧‧ shaft assembly

85‧‧‧ shaft

90‧‧‧Shell

C‧‧‧ Center

D‧‧‧ axis

Figure 1 is a top view of the created annular core.

Fig. 2 is a partial enlarged view of Fig. 1.

Figure 3 is a combined perspective view of the rotor structure of the present invention.

Figure 4 is an exploded view of the inventive integrated starter motor generator.

Figure 5 is a combination of the creation of an integrated starter motor generator.

Referring to Fig. 1, Fig. 2, and Fig. 3, respectively, a top view of the annular core is created, a partial enlarged view of Fig. 1, and a combined perspective view of the rotor structure of the present invention. The rotor structure of the present invention comprises an annular core 10 and a plurality of magnet groups 20. As shown in FIG. 1, the annular core 10 includes a plurality of slot groups 11 and a plurality of air slots 13. The slot groups 11 are arranged equidistantly in a ring shape. Each slot group 11 includes a first slot 111 and a second slot 113. The first slot 111 and the second slot 113 are arranged in a V shape or a U shape. The angle between the first slot 111 and the second slot 113 is 115° to 140° or 150° to 170°. The first slot 111 and the second slot 113 may or may not communicate with each other. The toroidal core 10 can be implemented using a silicon steel sheet. The air groove 13 is located on the outer wall of the annular core 10 and can be formed by digging the annular core 10.

As shown in FIG. 1 and FIG. 2, the air slot 13 is located between the two slot groups 11, especially in the adjacent two slot groups 11, adjacent to the first slot 111 and the second slot 113. between. The air groove 13 includes a bottom surface 131, a first wall surface 133 and a second wall surface 135. The first wall surface 133 and the second wall surface 135 are respectively connected to the bottom surface 131, and the first wall surface 133 and the second wall surface 135 are symmetrical with respect to the axis d of the center of the annular magnetic core 10 with respect to the center of the bottom surface. In the adjacent air groove 13 and the slot group 11, the first side wall 115 of the first slot 111 is parallel to the first wall surface 133, and the second side wall 117 of the second slot 113 is parallel to the second wall surface 135. .

As shown in FIG. 3, each magnet group 20 includes a first permanent magnet 21 and a second permanent magnet 23. The first permanent magnet 21 is inserted into the first slot 111, and the second permanent magnet 23 is inserted into the second slot 113. Referring again to Figures 1 and 2, that is, the air groove 13 is placed between the two magnetic poles. The first permanent magnet 21 and the second permanent magnet 23 may be connected or separated from each other. When the first permanent magnet 21 is connected to the second permanent magnet 23, it can be integrally formed.

In addition, the inventive rotor structure further includes a rotor cover 30, a rotor bushing 40, a resolver 50, and a resolver retaining ring 60. The rotor cover 30 may cover the annular core 10 on one or both sides, the rotor bushing 40 is located in the rotor cover 30, the resolver 50 is located on the rotor bushing 40, and the resolver 50 is provided by a rotor bushing 40 and the resolver fixing ring 60 are fixed.

Refer to Figure 4 and Figure 5 for an exploded view of the integrated starter motor generator. The inventive integrated starter motor generator includes the aforementioned rotor structure, stator 70, a plurality of winding sets 75, a shaft assembly 80, and a housing 90, and. The stator 70 is a combination of a plurality of stator modules 71 that surround the rotor structure. An insertion groove 73 is formed between the two stator modules 71 for inserting the winding group 75. The winding groups 75 can be connected in series or in parallel to each other and connected to external power (not shown). The shaft assembly 80 is disposed at the center of the annular core 10 and includes a shaft 85. Referring again to Fig. 3, the shaft 85 passes through the central through hole 55 of the resolver 50 and is fixed by the resolver retaining ring 60 for driving the rotor structure to rotate. The outer casing 90 is used to close the rotor structure, the stator 70, the winding set 75, and to fix the rotating shaft assembly 80.

The technical feature of the rotor structure of the present invention is that by providing the air groove 13 between the magnetic poles in the adjacent two-slot group 11, the magnetic flux can be effectively suppressed, the voltage harmonics can be reduced, and the high-speed weak magnetic field can be improved. .

The integrated starter motor generator is characterized in that the modular stator is used to insert the winding group 75 into the insertion slot 73 between the stator modules 71, which can effectively improve the slot ratio and reduce the length of the end line. Manufacturability.

10‧‧‧Ring core

11‧‧‧Slot group

111‧‧‧First slot

113‧‧‧second slot

13‧‧‧Air trough

C‧‧‧ Center

D‧‧‧ axis

Claims (9)

A rotor structure comprising: a ring core comprising a plurality of slot groups and a plurality of air slots, the slot groups being equidistantly arranged, each slot group comprising a first slot and a second slot And the first slot and the second slot are in communication with each other, the air slots are located on an outer wall of the annular core, and the air slots are located between the two slots; and a plurality of magnet groups, each of the magnets The set includes a first permanent magnet and a second permanent magnet. The first permanent magnet is inserted into the first slot, and the second permanent magnet is inserted into the second slot. The rotor structure of claim 1, wherein the first slot and the second slot in each of the slot groups are V-shaped or U-shaped. The rotor structure of claim 1, wherein the first permanent magnet and the second permanent magnet are integrally formed. The rotor structure of claim 1, wherein the air slot in each of the slot groups and the first slot and the second slot on both sides are not in communication with each other. The rotor structure of claim 1, wherein an angle between the first slot and the second slot of each of the slot sets is 115° to 140° or 150° to 170°. The rotor structure of claim 1, wherein each of the air slots comprises a bottom surface, a first wall surface and a second wall surface, wherein the first wall surface and the second wall surface are respectively connected to the bottom surface, and the first wall surface and the first wall surface The second wall surface is symmetrical with respect to an axis formed by the center of the bottom surface and the center line of the annular core. The rotor structure of claim 6, wherein in the adjacent air slots and slot groups, a first side wall of the first slot is parallel to the first wall surface, and a second slot of the second slot The side wall is parallel to the second wall surface. The rotor structure of claim 1, further comprising at least one rotor cover, a rotor bushing, a resolver, and a resolver retaining ring, the rotor cover covering the annular core with one or both sides, The rotor bushing is fixed in the rotor cover, the resolver is located on the rotor bushing, and the resolver is fixed by the rotor bushing and the resolver fixing ring. An integrated starter motor generator comprising: a rotor structure comprising: a toroidal magnetic core comprising a plurality of slot groups and a plurality of air slots, the slot groups being equidistantly arranged, each of the slot groups comprising a first slot and a second slot, wherein the first slot and the second slot are in communication with each other, the air slots are located on an outer wall of the annular core, and the air slots are located in the two slots And a plurality of magnet groups, each of the magnet groups includes a first permanent magnet and a second permanent magnet, the first permanent magnet is inserted in the first slot, and the second permanent magnet is inserted in the The first slot is composed of a plurality of stator modules, and surrounds the rotor structure, and a slot is formed between the two stator modules; a plurality of winding groups, each of which is located in the insertion slot And the coils in each of the winding groups are connected to each other; an outer casing covering the rotor, the stator, the winding groups; A shaft assembly is fixed to the outer casing and is disposed at a center of the annular magnetic core.