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US 10,374,494 B2Granted
Circuit board, motor and electronic power steering system
AssigneeLG Innotek Co., Ltd.
InventorJin Su Pyeon
Life of this patent
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Abstract
The present disclosure provides techniques for securing a running stability of a vehicle, whereby danger of safety accident can be significantly reduced during operation of a vehicle by enabling a minimum number of Hall elements to be driven even during damage to a power terminal or to a ground unit due to defect in circuit by separately forming a power terminal supplying a power to a plurality of magnetic elements in a plurality of numbers.
Claims13
A circuit board, comprising:
- a first magnetic element part;
- a second magnetic element part spaced from the first magnetic element part;
- a first power terminal electrically connected to the first magnetic element part;
- and
- a second power terminal spaced from the first power terminal and electrically connected to the second magnetic element part,
- wherein the first magnetic element part comprises a plurality of magnetic elements, and the second magnetic element part comprises a plurality of magnetic elements,
- wherein the plurality of magnetic elements of the first magnetic element part is disposed along a first circular arc having a first radius, and the plurality of magnetic elements of the second magnetic element part is disposed along a second circular arc having a second radius greater than the first radius, and
- wherein the first circular arc and the second circular arc are concentric.
5 more elements
A motor, comprising:
- a circuit board;
- a housing accommodated to the circuit board;
- a stator fixed to the housing;
- a rotor disposed at an inner side of the stator to rotate through an electric interaction with the stator;
- a rotation shaft rotating integrally with the rotor;
- and
- a sensing magnet disposed at the rotation shaft,
- wherein the circuit board comprises:
- a first magnetic element part;
- a second magnetic element part spaced from the first magnetic element part;
- a first power terminal electrically connected to the first magnetic element part;
- and
- a second power terminal electrically connected to the second magnetic element part spaced from the first power terminal, and wherein the first and second magnetic element parts of the circuit board detect the sensing magnet,
- wherein the first magnetic element part comprises a plurality of magnetic elements, and the second magnetic element part comprises a plurality of magnetic elements,
- wherein the plurality of magnetic elements of the first magnetic element part is disposed along a first circular arc having a first radius, and the plurality of magnetic elements of the second magnetic element part is disposed along a second circular arc having a second radius greater than the first radius, and
- wherein the first circular arc and the second circular arc are concentric.
13 more elements
An electronic power steering system, comprising:
- a motor;
- and
- an electronic controller driving the motor in response to an operating condition of a vehicle, and
- wherein the motor comprises:
- a circuit board;
- a housing accommodated to the circuit board;
- a stator fixed to the housing;
- a rotor disposed at an inner side of the stator to rotate through an electric interaction with the stator;
- a rotation shaft rotating integrally with the rotor;
- and
- a sensing magnet disposed at the rotation shaft;
- wherein the circuit board comprises:
- a first magnetic element part;
- a second magnetic element part spaced from the first magnetic element part;
- a first power terminal electrically connected to the first magnetic element part;
- and
- a second power terminal electrically connected to the second magnetic element part spaced apart from the first power terminal, and wherein the first and second magnetic element parts of the circuit board detect the sensing magnet,
- wherein the first magnetic element part comprises a plurality of magnetic elements, and the second magnetic element part comprises a plurality of magnetic elements,
- wherein the plurality of magnetic elements of the first magnetic element part is disposed along a first circular arc having a first radius, and the plurality of magnetic elements of the second magnetic element part is disposed along a second circular arc having a second radius greater than the first radius, and
- wherein the first circular arc and the second circular arc are concentric.
17 more elements
Dependencies are inferred from the claim text.