阅读说明：本技术 一种集成非晶合金与硅钢为定子铁芯的电机 (Motor with stator core made of integrated amorphous alloy and silicon steel ) 是由 沈军 余得贵 魏宇 于 2019-11-06 设计创作，主要内容包括：一种集成非晶合金与硅钢为定子铁芯的电机,包括电机壳体,电机壳体内设置有定子、转子,所述定子包括第一定子、第二定子,第一定子、第二定子相互独立设置,第一定子由非晶合金制成,第一定子上连接有非晶定子绕组,第二定子由硅钢制成,第二定子上连接有硅钢定子绕组；第一定子、第二定子外侧均与电机壳体内侧固定连接,电机壳体中心位置轴承连接有转轴,转轴外侧套接有转子,所述转子包括第一转子、第二转子,第一转子、第二转子分别与第一定子、第二定子的位置相对应,第一转子与第一定子之间、第二转子与第二定子之间均设置有气隙。(A motor integrating amorphous alloy and silicon steel as a stator core comprises a motor shell, wherein a stator and a rotor are arranged in the motor shell, the stator comprises a first stator and a second stator, the first stator and the second stator are arranged independently, the first stator is made of amorphous alloy, an amorphous stator winding is connected to the first stator, the second stator is made of silicon steel, and a silicon steel stator winding is connected to the second stator; the outer sides of the first stator and the second stator are fixedly connected with the inner side of the motor shell, a rotating shaft is connected to the center of the motor shell through a bearing, a rotor is sleeved on the outer side of the rotating shaft and comprises a first rotor and a second rotor, the first rotor and the second rotor correspond to the first stator and the second stator in position respectively, and air gaps are formed between the first rotor and the first stator and between the second rotor and the second stator.)

1. The utility model provides an integrated metallic glass and silicon steel are stator core's motor, includes motor casing, is provided with stator, rotor in the motor casing, its characterized in that: the stator comprises a first stator and a second stator which are arranged independently, the first stator is made of amorphous alloy, an amorphous stator winding is connected to the first stator, the second stator is made of silicon steel, and a silicon steel stator winding is connected to the second stator; the outer sides of the first stator and the second stator are fixedly connected with the inner side of the motor shell, a rotating shaft is connected to the center of the motor shell through a bearing, a rotor is sleeved on the outer side of the rotating shaft and comprises a first rotor and a second rotor, the first rotor and the second rotor correspond to the first stator and the second stator in position respectively, and air gaps are formed between the first rotor and the first stator and between the second rotor and the second stator.

2. The motor of claim 1 in which the stator core is formed of an integrated amorphous alloy and silicon steel, wherein: the first stator is an iron-based amorphous alloy stator, and the second stator is a silicon steel stator.

3. The motor of claim 2 in which the stator core is formed of an integrated amorphous alloy and silicon steel, wherein: the iron-based amorphous alloy stator is made of an iron-based amorphous alloy lamination subjected to heat treatment.

4. The motor of claim 1 in which the stator core is formed of an integrated amorphous alloy and silicon steel, wherein: the first rotor and the second rotor are both cast copper rotors.

5. The motor of claim 1 in which the stator core is formed of an integrated amorphous alloy and silicon steel, wherein: the motor shell is internally provided with a speed measuring gear, a speed sensor and a temperature sensor which are all connected with a controller circuit for controlling the motor to run.

Technical Field

The invention relates to the field of new energy automobiles, in particular to a motor with stator cores made of integrated amorphous alloy and silicon steel.

Background

The driving motor meeting the requirements of various new energy vehicles has been developed independently in China, part of performance indexes of the driving motor reach the international advanced level of the same power level, certain gaps still exist between the peak rotating speed, the power density and the efficiency and the foreign technology, and the continuous development and optimization of a novel motor and a driving system thereof which are more efficient, more reliable and higher in cost performance are still important and necessary. The motor work efficiency of the pure amorphous iron core is higher than that of the silicon steel iron core, the magnetic conductivity of the iron-based amorphous alloy material is about 6 times that of the silicon steel at power frequency, so that the exciting current can be lower than that of the silicon steel iron core motor when the amorphous iron core motor is designed, and further the copper consumption of the motor can be reduced to a certain extent. In the application frequency range of the motor, the magnetic permeability of the iron-based amorphous alloy is hardly changed along with the increase of the frequency, and the magnetic permeability of the silicon steel is reduced along with the increase of the frequency, so that the amorphous iron core motor has more obvious advantages under high frequency. The amorphous motor is more energy-saving and efficient than a silicon steel motor, and the high rotating speed, the high power density or the high torque density of the motor can be realized more easily by improving the frequency on the premise of ensuring the high efficiency of the motor. However, the motor with the pure amorphous iron core has a magnetostrictive effect, so that the magnetic induction intensity is high, and the noise is high during working when the motor is high in frequency, which is unacceptable in a new energy automobile.

Disclosure of Invention

The invention aims to solve the problems and provides a motor which integrates amorphous alloy and silicon steel into a stator core and has a simple structure and convenience in use.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a motor integrating amorphous alloy and silicon steel as a stator core comprises a motor shell, wherein a stator and a rotor are arranged in the motor shell, the stator comprises a first stator and a second stator, the first stator and the second stator are arranged independently, the first stator is made of amorphous alloy, an amorphous stator winding is connected to the first stator, the second stator is made of silicon steel, and a silicon steel stator winding is connected to the second stator; the outer sides of the first stator and the second stator are fixedly connected with the inner side of the motor shell, a rotating shaft is connected to the center of the motor shell through a bearing, a rotor is sleeved on the outer side of the rotating shaft and comprises a first rotor and a second rotor, the first rotor and the second rotor correspond to the first stator and the second stator in position respectively, and air gaps are formed between the first rotor and the first stator and between the second rotor and the second stator.

Furthermore, the first stator is an iron-based amorphous alloy stator, and the second stator is a silicon steel stator.

Further, the iron-based amorphous alloy stator is made of heat-treated iron-based amorphous alloy laminations.

Further, the first rotor and the second rotor are both cast copper rotors.

Furthermore, a speed measuring gear, a speed sensor and a temperature sensor are arranged in the motor shell, and the speed measuring gear, the speed sensor and the temperature sensor are all connected with a controller circuit for controlling the starting of the motor.

Compared with the prior art, the invention has the advantages and positive effects that:

according to the invention, the first stator made of amorphous alloy and the second stator made of silicon steel are respectively arranged in the motor shell, so that the advantages of the amorphous iron core motor and the advantages of the silicon steel iron core motor are combined. When the new energy automobile is in a low-speed running working condition, the automobile requires that the driving motor has small output torque, low rotating speed and low power, the advantages of the amorphous stator under the low frequency can not be reflected, and meanwhile, the output power of the amorphous stator part is limited, so that the running requirement can be met only by carrying out power-on control on the second stator. Because the amorphous stator has the characteristic of low loss and high frequency that the silicon steel stator does not have, when the new energy automobile is in the high-speed driving working condition, the vehicle requires that the driving motor has small output torque, high rotating speed and low power, therefore only carry on the power-on control to the first stator, the magnetic induction intensity inside the amorphous stator is weak under the high-frequency low-power state, the magnetostrictive effect is small, the noise is low, because of the good high-frequency characteristic of amorphous, the operating efficiency of the motor is still very high at this moment; when the new energy vehicle is in heavy load working conditions such as starting, climbing long slopes and overtaking at high speed, the vehicle requires the motor to keep outputting large torque and high power, and the first stator and the second stator are started to output simultaneously, so that the whole motor outputs maximum torque and maximum power. By combining and applying the stators made of the two materials, the overall efficiency of the driving system is improved, and the peak power density is increased. The amorphous material has much larger magnetic permeability than silicon steel, so that the exciting current of the motor can be reduced to a great extent, further the copper loss of the motor is reduced, and the amount of copper used for windings is reduced, so that the motor efficiency is further improved, and the total cost of the motor is reduced. Meanwhile, the amorphous alloy stator has lower density than silicon steel, so that the weight of the stator of the motor is reduced. In a whole view, the mixed material motor reduces the no-load weight of the new energy automobile, reduces the motor cost, increases the endurance mileage of the new energy automobile and optimizes the full-range working efficiency of the new energy automobile.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present invention by a person skilled in the art without any creative effort, should be included in the protection scope of the present invention.

As shown in fig. 1, a motor with stator core made of integrated amorphous alloy and silicon steel comprises a motor housing 1, wherein a stator and a rotor are arranged in the motor housing 1, the stator comprises a first stator 2 and a second stator 3, the first stator 2 and the second stator 3 are arranged independently, the first stator 2 is an iron-based amorphous alloy stator, and the iron-based amorphous alloy stator is made of iron-based amorphous alloy laminations subjected to heat treatment; the first stator 2 is connected with an amorphous stator winding 10; the second stator 3 is the silicon steel stator, is connected with silicon steel stator winding 4 on the second stator 3, and first stator 2, the 3 outsides of second stator all with 1 inboard fixed connection of motor casing, and 1 central point of motor casing puts and is connected with pivot 8 through bearing 7, and the rotor has been cup jointed in the 8 outsides of pivot, the rotor includes first rotor 5, second rotor 6, and first rotor 5, second rotor 6 are cast copper rotor, and first rotor 5, second rotor 6 are corresponding with the position of first stator 2, second stator 3 respectively, between first rotor 5 and the first stator 2, all be provided with air gap 9 between second rotor 6 and the second stator 3.

The mixed stator material driving motor consists of two stators, so that 6 wires are output from the motor and are respectively a silicon steel stator three-phase outgoing wire and an amorphous stator three-phase outgoing wire, the silicon steel stator three-phase outgoing wire is connected with a silicon steel stator driving circuit, and the amorphous stator three-phase outgoing wire is connected with an amorphous stator driving circuit. The motor control is realized by outputting 3 different PWM combinations to drive 6 IGBT power tubes according to a vector control algorithm.

The amorphous stator winding and the silicon steel stator winding are independent windings and are respectively connected with the amorphous stator and the silicon steel stator, the two stators and the windings are not mechanically coupled, and torque coupling is carried out through a rotating shaft. The three-phase outgoing lines are the outgoing lines of the amorphous stator winding and the silicon steel winding. Because the two windings belong to the amorphous stator and the silicon steel stator respectively, the number of turns and the number of parallel windings are different. The material consumption of the amorphous stator and the silicon steel stator is different, and the optimal proportion is obtained by calculation mainly according to the working condition characteristics of the vehicle motor. The end of the motor is also provided with a speed measuring gear, a speed sensor and two temperature sensors, which are necessary signals required for carrying out high-performance motor vector control. The speed measuring gear, the speed sensor and the two temperature sensors are connected with a controller circuit of the control motor.

The invention uses the iron-based amorphous alloy and the silicon steel sheet as the stator core material of the motor together, and the independent winding belonging to the amorphous stator and the independent winding belonging to the silicon steel stator exist in the motor. The two windings are not mechanically coupled. The iron-based amorphous alloy lamination needs certain heat treatment and is suitable for the production and performance exertion of an amorphous radial flux motor.

According to the invention, the first stator made of amorphous alloy and the second stator made of silicon steel are respectively arranged in the motor shell, so that the advantages of the amorphous iron core motor and the advantages of the silicon steel iron core motor are combined. When the new energy automobile is in a low-speed running working condition, the automobile requires that the driving motor has small output torque, low rotating speed and low power, the advantages of the amorphous stator under the low frequency can not be reflected, and meanwhile, the output power of the amorphous stator part is limited, so that the running requirement can be met only by carrying out power-on control on the second stator. Because the amorphous stator has the characteristic of low loss and high frequency that the silicon steel stator does not have, when the new energy automobile is in the high-speed driving working condition, the vehicle requires that the driving motor has small output torque, high rotating speed and low power, therefore only carry on the power-on control to the first stator, the magnetic induction intensity inside the amorphous stator is weak under the high-frequency low-power state, the magnetostrictive effect is small, the noise is low, because of the good high-frequency characteristic of amorphous, the operating efficiency of the motor is still very high at this moment; when the new energy vehicle is in heavy load working conditions such as starting, climbing long slopes and overtaking at high speed, the vehicle requires the motor to keep outputting large torque and high power, and the first stator and the second stator are started to output simultaneously, so that the whole motor outputs maximum torque and maximum power. By combining and applying the stators made of the two materials, the overall efficiency of the driving system is improved, and the peak power density is increased. The amorphous material has much larger magnetic permeability than silicon steel, so that the exciting current of the motor can be reduced to a great extent, further the copper loss of the motor is reduced, and the amount of copper used for windings is reduced, so that the motor efficiency is further improved, and the total cost of the motor is reduced. Meanwhile, the amorphous alloy stator has lower density than silicon steel, so that the weight of the stator of the motor is reduced. In a whole view, the mixed material motor reduces the no-load weight of the new energy automobile, reduces the motor cost, increases the endurance mileage of the new energy automobile and optimizes the full-range working efficiency of the new energy automobile.

The amorphous alloy motor has excellent performance and good market application prospect, has excellent electromagnetic performance compared with the traditional silicon steel sheet motor, and has more outstanding performance advantages particularly in the field of high-speed and high-frequency application. But the amorphous alloy driving motor which can be really used on a new energy automobile is almost not available. Therefore, the motor of the invention combines the silicon steel material and the amorphous alloy as the stator core, so that the amorphous alloy is really applied to the new energy drive motor, and the application of the combined material and the design of a special control system greatly improve the overall efficiency of the drive system and make great contribution to the continuous development of new energy automobiles.