37results about How to "Guaranteed not to lose magnetism" patented technology

The invention provides a production method for an embedded permanent magnet rotor of a tangential and radial resultant magnetic field driving motor, and belongs to the technical field of automobile motor electric appliances. Pieces of rectangular permanent magnet steel are embedded into radial rectangular grooves and second tangential rectangular grooves of a rotor iron core respectively. Due to the fact that the tangential and radial resultant magnetic field driving motor is of a rotor magnetic bypass structure, the problem that irreversible demagnetization is generated when the permanent magnet steel bears the action of the armature reaction of an impact current can be effectively avoided, it is ensured that demagnetization does not happen on the permanent magnet steel, the magnetic field of the rotor of the driving motor is supplied by both the tangential magnetic field and the radial magnetic field, the magnetic field intensity is large, output power is high, and the embedded permanent magnet rotor has the advantages of being high in efficiency and power density, compact in structure, reliable in work and the like.

The invention provides a production method for a hub motor rotor with embedded radial permanent magnet steel and embedded tangential permanent magnet steel, and belongs to the technical field of automobile motors and electrical appliances. Rectangular permanent magnet steel is embedded in a radial rectangular groove and a second tangential rectangular groove of a rotor core respectively to form an embedded permanent magnet rotor. The structure is a rotor magnetic bypass structure, the problem that irreversible demagnetization happens to the permanent magnet steel under the action of armature reaction of impulse current can be effectively prevented, it is guaranteed that the permanent magnet steel does not lose magnetism, and meanwhile a hub drive motor rotor field is jointly provided by a radial magnetic field and a tangential magnetic field. Besides, the hub motor rotor with the embedded radial permanent magnet steel and the embedded tangential permanent magnet steel has the advantages that magnetic field intensity is high, output power is high, efficiency is high, power density is high, the structure is compact, and working is reliable.

The invention provides a built-in permanent magnet steel hub driving motor of an electric vehicle and belongs to the technical field of automobile motor electric appliances. The built-in permanent magnet steel hub driving motor of the electric vehicle consists of a front end cover, a rear end cover, a hub casing, a rotor, a stator, a stator support and a shaft. Two pieces of completely-identical rectangular permanent magnet steel are respectively placed in two rectangular grooves forming a shape of a regular Chinese character 'ba' of a rotor iron core to form an N-pole, the other two pieces of completely-identical rectangular permanent magnet steel are respectively placed in a regular Chinese character 'ba' shaped groove formed by the other two adjacent rectangular grooves of the rotor iron core to form an S-pole, the rest can be done in the same manner to form the permanent magnet rotor with N-poles and S-poles arranged at intervals, the structure is a rotor magnetic bypass structure and can effectively prevent the permanent magnet steel from producing irreversible demagnetization under the armature reaction effect of impact current, and excitation loss of the permanent magnet steel is ensured. A rotor magnetic field of the hub driving motor is provided by the permanent magnet steel without electro-magnetic windings, electric energy consumption is low, carbon brushes and mechanical commutators are not adopted, and the failure rate is low.

The invention provides a built-in tangential permanent magnet steel hub driving motor of an electric vehicle and belongs to the technical field of automobile motor electric appliances. The built-in tangential permanent magnet steel hub driving motor of the electric vehicle consists of a shaft, a front end cover, a rear end cover, a hub casing, a rotor, a stator and a stator support. A first piece of rectangular permanent magnet steel and the other piece of rectangular permanent magnet steel are sequentially installed in radial rectangular grooves of a rotor iron core in a mode that an N-pole of the first piece of rectangular permanent magnet steel is opposite to an N-pole of the other piece of rectangular permanent magnet steel, and an S-pole of the first piece of rectangular permanent magnet steel is opposite to an S-pole of the other piece of rectangular permanent magnet steel, a tangential permanent magnet rotor with N-poles and S-poles arranged at intervals is formed, the structure is a rotor magnetic bypass structure and can effectively prevent the permanent magnet steel from producing irreversible demagnetization under the armature reaction effect of impact current, and excitation loss of the permanent magnet steel is ensured. A rotor magnetic field of the hub driving motor is provided by the permanent magnet steel without electro-magnetic windings, electric energy consumption is low, carbon brushes and mechanical commutators are not adopted, the failure rate is low, and the built-in tangential permanent magnet steel hub driving motor has high-efficiency, high-power-density and remarkable magnetic focusing effect and can provided enough power for the electric vehicle.

The invention provides an electric vehicle electromagnetic and built-in permanent magnet combined magnetic pole hybrid excitation drive motor, which belongs to the technical field of electric vehicle motors and appliances. It is composed of a front end cover, a rear end cover, a casing, a rotor, and a stator. The rectangular permanent magnet steel is respectively embedded in the first rectangular slot and the second rectangular slot, which can effectively prevent the permanent magnet steel from being affected by the armature reaction of the impact current. Irreversible demagnetization is generated to ensure that the permanent magnet steel does not lose its magnetism. The magnetic field in the air gap of the drive motor is provided by the permanent magnet steel and the electric excitation winding, with high magnetic field strength and high output power.

The invention provides a salient electromagnetic and embedded permanent magnet hybrid excitation drive motor for electric automobiles, and belongs to the technical field of electric automobile motors and appliances. The drive motor is composed of a front end cover, a rear end cover, a case, a rotor, and a stator. Rectangular permanent magnet steel pieces are embedded into radial rectangular slots, and tile-shaped permanent magnet steel pieces are embedded into circular arc slots. The permanent magnet steel pieces can be effectively prevented from generating irreversible demagnetization under the armature reaction effect of impact current, and that the permanent magnet steel pieces do not lose magnetism is ensured. The magnetic field in the air gap of the drive motor is provided jointly by the permanent magnet steel pieces and an electric excitation winding. The magnetic field is strong, and the output power is high.

The invention provides a radial-tangential permanent magnet and brushless electromagnetism hybrid excitation driving motor, and belongs to the technical field of electric automobile motors and electrical appliances. The radial-tangential permanent magnet and brushless electromagnetism hybrid excitation driving motor is composed of a front end cover, a rear end cover, a casing, a rotor and a stator, and is characterized in that rectangular permanent magnet steel is respectively embedded in first rectangular grooves and second rectangular grooves, so that the permanent magnet steel can be effectively prevented from generating irreversible demagnetization under the action of an armature reaction of impulse current, and the permanent magnet steel is ensured not to be demagnetized. A magnetic field in an air gap of the driving motor is provided by the permanent magnet steel and an electrical excitation winding together, so that the magnet field intensity is great, and the output power is high.

The invention provides a production method for rotor of a permanent magnet driving motor with built-in tangential and combined type radial magnetic fields, and belongs to the technical field of motors and electric appliances of electric automobiles. Rectangular permanent magnet steels are embedded in corresponding first rectangular grooves and second rectangular grooves of the rotor iron core respectively; the magnetic field of each magnetic pole of the rotor of the driving motor is jointly supplied by four permanent magnet steels separately, so that high magnetic field strength and high power density are realized; the structure is a rotor magnetic bypass structure, so that the irreversible demagnetizing of the permanent magnet steels generated under an armature reaction of the impact current can be effectively prevented so as to ensure that the permanent magnet steels are not demagnetized; and in addition, the driving motor has the advantages of high efficiency and high reliability.

The invention provides a production method of a built-in permanent magnet rotor of an electric vehicle hub driving motor and belongs to the technical field of automobile motor electric appliances. Two pieces of completely-identical rectangular permanent magnet steel are respectively placed in two rectangular grooves forming a shape of a regular Chinese character 'ba' of a rotor iron core to form an N-pole, the other two pieces of completely-identical rectangular permanent magnet steel are respectively placed in a regular Chinese character 'ba' shaped groove formed by the other two adjacent rectangular grooves of the rotor iron core to form an S-pole, the rest can be done in the same manner to form the permanent magnet rotor with N-poles and S-poles arranged at intervals, the structure is a rotor magnetic bypass structure and can effectively prevent the permanent magnet steel from producing irreversible demagnetization under the armature reaction effect of impact current, and excitation loss of the permanent magnet steel is ensured. A rotor magnetic field of the hub driving motor is provided by the permanent magnet steel without electro-magnetic windings, electric energy consumption is low, carbon brushes and mechanical commutators are not adopted, and the failure rate is low.

The invention provides an invisible composite magnetic pole and brushless electromagnetic drive motor, and belongs to the technical field of electric automobile motors and appliances. The drive motor is composed of a front end cover, a rear end cover, a case, a rotor, and a stator. Rectangular permanent magnet steel pieces are respectively embedded into first rectangular slots and second rectangular slots. The permanent magnet steel pieces can be effectively prevented from generating irreversible demagnetization under the armature reaction effect of impact current, and that the permanent magnet steel pieces do not lose magnetism is ensured. The magnetic field in the air gap of the drive motor is provided jointly by the permanent magnet steel pieces and an electric excitation winding. The generated magnetic field directly faces the air gap, and there is less magnetic flux leakage.

The invention provides a combined-type permanent magnet pole drive motor rotor production method, and belongs to the technical field of electric car motor and electric appliances. Permanent magnet steels are respectively embedded into a rectangular radial groove and an arc-shaped groove of a rotor core. The structure is a rotor magnetic bypass structure, can effectively prevent the permanent magnet steels from causing irreversible demagnetization under the armature reaction of an impact current, and guarantees that the permanent magnet steels are not demagnetized. Meanwhile, the magnetic field of each magnetic pole of the drive motor rotor is provided by three permanent magnet steels, and is large in intensity. The method is high in output power, is high in efficiency, is high in power density, and is high in reliability.

The invention provides a method for producing a built-in biradial permanent magnet steel resultant magnetic field driving motor rotor and belongs to the technical field of electric automobile motors and electric equipment.Rectangular permanent magnet steel is embedded in a first rectangular groove and a second rectangular groove of a rotor core.A rotor magnetic bypass structure is adopted, irreversible demagnetization of permanent magnet steel caused under the armature reaction of impulse current can be effectively prevented, and loss of excitation of permanent magnet steel is avoided; meanwhile, the magnetic field of the driving motor rotor is provided by biradial permanent magnet steel, magnetic field intensity is high, output power is high, and the driving motor rotor has the advantages of being high in efficiency, high in power density, compact in structure, reliable in work and the like.

The invention provides a biradial permanent magnet and brushless electromagnetic hybrid excitation drive motor, and belongs to the technical field of electric car motor appliances. The drive motor consists of a front end cover, a rear end cover, a motor case, a rotor, and a stator. Rectangular permanent magnet steels are respectively embedded into a first rectangular groove and a second rectangular groove. The drive motor can effectively prevent the permanent magnet steels from causing irreversible demagnetization under the action of armature reaction of an impact current, and guarantees that the permanent magnet steels are not demagnetized. A magnetic field in a gap of the drive motor is provided by the permanent magnet steels and an excitation winding, and is high in intensity. The output power is high.

The invention provides a production method of a drive motor rotor embedded with rare-earth permanent magnet steel for an electric automobile, and belongs to the technical field of electric automobile motors and electric appliances. Rectangular permanent magnet steel is embedded into rectangular radial slots and rectangular tangential slots of a rotor core respectively; a magnetic field of the drive motor rotor is provided by three pieces of permanent magnet steel; the magnetic field is high in strength; the power density is high; and the structure is a rotor flux bypass structure. The problem that the permanent magnet steel generates irreversible demagnetization under the effect of armature reaction of an impulse current can be effectively solved; the condition that the permanent magnet steel is not demagnetized is ensured; an electrical exciting winding is avoided; electric energy consumption is low; a carbon brush or a mechanical commutator is avoided; the fault rate is low; and the drive motor rotor has the characteristics of being compact in structure, reliable to work and the like.