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Rotor for application in drive motor

A technology for driving motors and rotors, which is applied in the field of rotors with stacked rotor cores, which can solve the problems of reduced torque density, reduced performance of driving motors, and reduced efficiency, and achieve the effects of minimizing leakage, reducing quantity, and reducing leakage

Pending Publication Date: 2021-06-18
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the leakage of magnetic flux increases at the position where the fixed pawl is provided, the torque density decreases, and therefore, the performance of the drive motor decreases
In the case of increasing the amount of permanent magnets used to compensate for the reduction in the torque of the drive motor, the material cost of the drive motor increases, resulting in a decrease in cost competitiveness
In the case where the amount of current is increased to compensate for the reduction in torque of the drive motor, the cost of the inverter element increases and thus the efficiency decreases

Method used

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  • Rotor for application in drive motor
  • Rotor for application in drive motor
  • Rotor for application in drive motor

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Embodiment Construction

[0028] Advantages and features of the present disclosure and a method of achieving the advantages and features will be apparent from the accompanying drawings and the embodiments to be described in detail below. However, the present disclosure is not limited to the embodiments to be disclosed below, and can be implemented in various embodiments. The embodiments are provided in order to fully disclose the present disclosure and to clearly understand the scope of the present disclosure to those having ordinary skill in the art to which the present disclosure pertains. However, the scope of the present disclosure should be limited only by the claims. The same reference numerals refer to the same constituent elements throughout the specification.

[0029] Also, the terms first, second, etc. are used throughout this specification in order to distinguish constituent elements having the same name. In the following description, it is not necessary to impose any limitation on the ord...

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PUM

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Abstract

Provided is a rotor for application in a drive motor that includes multiple cores of the rotor that define a plurality of slots into each of which a permanent magnet is inserted, in which the cores of the rotor include a first core in which fixation jaws for holding in place one surface of the permanent magnet and the other surface opposite to the one surface in a direction of extension of the permanent magnet are disposed, and a second core in which fixation jaws for holding in place one surface of the one surface of the permanent magnet and the other surface opposite to the one surface in the direction of the extension of the permanent magnet are disposed.

Description

technical field [0001] The present disclosure relates to a rotor stacked with rotor cores each having fixing claws for fixing permanent magnets in place. Specifically, the present disclosure relates to a rotor for driving a motor in which the rotor core has different numbers of fixing claws. Background technique [0002] Drive motors used in environmentally friendly vehicles are required to have high efficiency and output density. In particular, electric vehicles (EVs) require all of the vehicle's power from the drive motor, thus further increasing the required drive motor torque and output. In the past, electric vehicles were limited to passenger cars, but now, electric vehicles include sports cars, trucks, buses, and more. Therefore, the required torque and output are further increased. However, in order to provide high levels of torque and output within the limited space of a vehicle, the drive motor must be designed to be smaller. [0003] Generally, embedded permane...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/28
CPCH02K1/276H02K1/28H02K1/2766Y02T10/64H02K21/14B60L2220/10H02K15/03H02K21/16H02K1/30
Inventor 朴庚秀李政祐
Owner HYUNDAI MOTOR CO LTD
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