KR101393156B1 - Eletronic Control Unit of Electric Power Steering Apparatus and Electric Power Steering Apparatus for Vehicle having The Same - Google Patents

Eletronic Control Unit of Electric Power Steering Apparatus and Electric Power Steering Apparatus for Vehicle having The Same Download PDF

Info

Publication number
KR101393156B1
KR101393156B1 KR1020100025685A KR20100025685A KR101393156B1 KR 101393156 B1 KR101393156 B1 KR 101393156B1 KR 1020100025685 A KR1020100025685 A KR 1020100025685A KR 20100025685 A KR20100025685 A KR 20100025685A KR 101393156 B1 KR101393156 B1 KR 101393156B1
Authority
KR
South Korea
Prior art keywords
circuit board
printed circuit
metal
metal printed
main printed
Prior art date
Application number
KR1020100025685A
Other languages
Korean (ko)
Other versions
KR20110106575A (en
Inventor
최대근
Original Assignee
주식회사 만도
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 만도 filed Critical 주식회사 만도
Priority to KR1020100025685A priority Critical patent/KR101393156B1/en
Publication of KR20110106575A publication Critical patent/KR20110106575A/en
Application granted granted Critical
Publication of KR101393156B1 publication Critical patent/KR101393156B1/en

Links

Images

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)

Abstract

The present invention relates to an electronic control apparatus for an electric steering system and an electric steering system for an automotive vehicle having the same, and a metal printed circuit board on which a field effect transistor is mounted is horizontally arranged on a main printed circuit board, This eliminates the need for a jig or an additional process for joining the metal printed circuit board to the main printed circuit board, thereby improving manufacturing and assembling properties and reducing manufacturing costs. The metal printed circuit board and the main printed circuit board It is possible to prevent breakage of the field effect transistor due to the high temperature and to prevent errors, and to reduce the weight and cost of the electronic control device and to maximize the heat dissipation effect by applying and bonding insulation grease with good heat dissipation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric control device for an electric motor,

The present invention relates to an electronic control device of an electric steering system. More specifically, a metal printed circuit board on which a field effect transistor is mounted is horizontally arranged on a main printed circuit board and directly mounted on a heat sink, thereby eliminating the need for a jig or an additional process for connecting the metal printed circuit board to the main printed circuit board This prevents the damage of the field effect transistor due to the high temperature, because it improves the manufacturability and assemblability and reduces the manufacturing cost, and by applying insulating grease with good insulation and heat dissipation between these metal printed circuit boards and the main printed circuit board and the heat sink. The present invention relates to an electronic control device for an electric steering system and an electric steering system for an automobile having the same, which can prevent errors and maximize heat dissipation while reducing the weight and cost of the electronic control system.

2. Description of the Related Art [0002] In general, a hydraulic steering apparatus (HPS) using a hydraulic pressure of a hydraulic pump is used as a steering apparatus of an automobile. However, Electric Power Steering Apparatus (EPS) using an electric motor has gradually become popular since the 1990s.

In the case of the hydraulic steering system, the hydraulic pump, which is the power source for supplying the steering assist power, is always driven by the engine and thus consumes energy regardless of whether the steering wheel is rotated. In the case of the electric steering system, When the steering torque is generated, the motor supplies the steering assist power proportional to the generated steering torque. Thus, using an electric steering system can improve energy efficiency compared to using a hydraulic steering system.

FIG. 1 is a schematic view of a general electric steering system, and FIG. 2 is a perspective view showing a state where a conventional electronic control system is mounted on the electric steering system.

As shown in these figures, generally, an electric steering apparatus includes a steering system 100 that extends from a steering wheel 101 to both wheels 108, and an auxiliary power mechanism (not shown) that supplies steering assist power to the steering system 100. [ (120).

The steering system 100 is connected to the steering wheel 101 at the upper end and the lower end is connected to the pinion shaft 104 via the pair of universal joints 103 to be connected to the steering shaft 102 ). The pinion shaft 104 is connected to the rack bar 109 via the rack-and-pinion mechanism unit 105 and both ends of the rack bar 109 are connected to the wheel 108 via the tie rod 106 and the knuckle arm 107 .

The rack-and-pinion mechanism portion 105 is formed by interlocking the pinion gear 111 formed at the lower end of the pinion shaft 104 and the rack gear 112 formed at one side of the outer circumferential surface of the rack bar 109. The rotational motion of the pinion shaft 104 is changed to the linear motion of the rack bar 109 through the rack-and-

Therefore, when the driver operates the steering wheel 101, the pinion shaft 104 rotates, and the rack bar 109 linearly moves in the axial direction as the pinion shaft 104 rotates, and the linear motion of the rack bar 109 So that the wheel is steered through the tie rod 106 and the knuckle arm 107.

The auxiliary power mechanism 120 includes a torque sensor 121 that senses a steering torque applied by the driver to the steering wheel 101 and outputs an electric signal proportional to the detected steering torque, An electronic control unit (ECU) 123 for generating a control signal based on the electric signal, a motor 130 for generating a steering assist power based on the control signal transmitted from the electronic control unit 123, And a speed reducer 113 composed of a worm shaft and a worm wheel so as to transmit the steering assist power generated by the motor 130 to the steering shaft 102.

In this electric power steering system, the electronic control device 123 is one of the core parts of the electric steering system. The electronic control unit 123 analyzes an electric signal transmitted from an external sensor and grasps the driver's intention to steer the vehicle and the driving situation of the vehicle and calculates the control current amount of the motor by using various logic And controls the motor.

As shown in FIG. 2, the conventional electronic control unit 123 includes a heat sink 210 and a printed circuit board (PCB) 230, And a lid 240.

The main printed circuit board 230 includes a capacitor, a shunt resistor, a field effect transistor (FET) 225 mounted on the metal printed circuit board 220, a coil, a microcomputer, , Relay, current sensor, and power connector.

The lid 240 is disposed at a predetermined distance from the main printed circuit board 230, and is formed of metal. When the electronic control unit 123 is driven, the heat sink 210 generates heat from a plurality of heat generating components mounted therein, for example, the field effect transistor 225. At this time, It is a device for radiating into the air.

The heat dissipation plate 210 is made of a metal material such as aluminum or copper having good thermal conductivity because it needs to dissipate heat rapidly. The heat sink 210 is coupled to the main printed circuit board 230 and the cover 240 by fastening means such as bolts.

In such a conventional electronic control device, since the metal printed circuit board is vertically coupled to the main printed circuit board, a jig or a process for the metal printed circuit board is further required, which lowers manufacturability and assemblability and raises manufacturing costs.

In addition, although a large amount of heat is generated in the metal printed circuit board on which the field effect transistor is mounted as the current required for driving the motor flows, there is a problem that the heat dissipating effect on the vertical lamination structure between the metal printed circuit board and the heat sink is deteriorated.

In addition, heat dissipation of the metal printed circuit board is not properly performed, and the expensive field effect transistor is damaged or an error occurs.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a metal printed circuit board on which a field effect transistor is mounted, It is possible to improve the manufacturability and assemblability and reduce the manufacturing cost, and by applying insulating grease having good insulation and heat dissipation between the metal printed circuit board and the main printed circuit board and the heat sink, The object of the present invention is to prevent breakage of a field effect transistor due to high temperature, to prevent errors, and to reduce the weight and cost of an electronic control device while maximizing heat dissipation effect.

In order to achieve the above object, according to an embodiment of the present invention, there is provided an electronic control apparatus for an electric steering system including a heat sink, a shunt resistor, a main printed circuit board and a metal printed circuit board, And an electronic control unit of the electric motor-driven steering system is arranged in parallel with the printed circuit board.

According to another embodiment of the present invention, there is provided a motor vehicle including a motor generating a steering assist power based on a control signal transmitted from an electronic control device including a heat sink, a shunt resistor, a main printed circuit board and a metal printed circuit board Wherein the electronic control device is arranged such that the metal printed circuit board is arranged in parallel with the main printed circuit board.

According to the present invention, a metal printed circuit board on which a field effect transistor is mounted is horizontally arranged on the main printed circuit board and directly mounted on the heat sink, thereby requiring a jig or an additional process for coupling the metal printed circuit board to the main printed circuit board So that the manufacturing and assembling properties are improved and the manufacturing cost is reduced.

In addition, it is possible to prevent breakdown of the field effect transistor due to high temperature and to prevent errors, and to reduce the weight and cost of the electronic control device and to maximize the heat radiation effect by applying and bonding insulation grease with good heat dissipation between these boards and the heat sink There is an effect that can be done.

FIG. 1 is a schematic view of a general electric steering apparatus,
2 is an exploded perspective view showing an electronic control unit of a conventional electric power steering apparatus,
3 and 4 are exploded perspective views of the electronic control unit of the electric power steering system according to the embodiment of the present invention, viewed from one side and the other side.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

3 and 4 are exploded perspective views of the electronic control unit of the electric power steering system according to the embodiment of the present invention, viewed from one side and the other side.

As shown in these drawings, an electronic control unit 300 of an electric steering system according to an embodiment of the present invention includes a heat sink 320, a shunt resistor 333, a main printed circuit board 330, A circuit board 340 and a cover 310. The metal printed circuit board 340 is horizontally arranged in parallel with the main printed circuit board 330. [

The terminal 343 of the metal printed circuit board 340 is coupled to the main printed circuit board 330 and the metal substrate of the metal printed circuit board 340 is coupled to the heat sink 320 by the fastening member 350 The metal printed circuit board 340 and the main printed circuit board 330 are arranged horizontally in parallel so that a jig or an additional process for joining the metal printed circuit board 340 to the main printed circuit board 330 is unnecessary The manufacturability and assemblability are improved and the manufacturing cost is reduced.

The cover 310, which is formed of metal, is coupled to the heat sink 320 by a predetermined distance from the main printed circuit board 330.

A component such as a capacitor 331 and a shunt resistor 333, a coil 335, a microcomputer, a relay, a current sensor, and a power connector 337 are mounted on the main printed circuit board 330.

The capacitor 331 absorbs a ripple current included in a current supplied to the motor, the shunt resistor 333 senses a current supplied to the motor, and the coil removes electromagnetic noise , The microcomputer calculates the steering assist power based on the steering torque or the vehicle speed.

The metal printed circuit board 340 has a field effect transistor 345 and other elements mounted on a metal substrate and has a fastening hole 347a for fastening with the heat dissipating plate 320.

The field effect transistor 345 switches the current supplied to the motor according to the magnitude and direction of the steering assist power, and the metal substrate is printed with a field effect transistor 345 and a circuit of the elements.

The heat dissipating plate 320 is a device for dissipating the heat generated in the main printed circuit board 330 and the metal printed circuit board 340 into the air. The heat dissipating plate 320 is connected to the cover 310, (Not shown).

The heat sink 320 is a device for dissipating heat generated from a plurality of internally mounted heat generating components such as the field effect transistor 345 and the like to external air during operation of the electronic control unit 300. The heat sink 320 ) Is made of a metal material such as aluminum or copper, which has good thermal conductivity because it needs to dissipate heat rapidly.

The heat sink 320 has a support surface 325 corresponding to the metal printed circuit board 340 and the main printed circuit board 330 so as to be horizontally aligned and coupled to each other. The circuit board 340 and the main printed circuit board 330 are supported on the support surface 325 while being arranged horizontally with respect to each other.

Insulating grease is applied to the heat sink 320 at the corresponding positions of the shunt resistor 333 and the metal printed circuit board 340 so that the shunt resistor 333 and the metal printed circuit board 340, The heat sink 320, the main printed circuit board 330 and the metal printed circuit board 340 are coupled to the cover 310 while preventing the heat sink 340 from short-circuiting with the heat sink 320 and dissipating heat.

The support surface 325 of the heat sink 320 is formed at a corresponding position between the shunt resistor 333 and the metal printed circuit board 340. The support surface 325 is coated with insulating grease, The heat sink 320 and the main printed circuit board 330 and the metal printed circuit board 340 are covered by the cover 331 and the metal printed circuit board 340 while preventing the short circuit between the metal printed circuit board 340 and the heat sink 320, 310 < / RTI >

Accordingly, the heat dissipation performance is improved as compared with the conventional electronic control device, the durability life of the expensive parts becomes long, the error due to overheating is reduced, and the cost is reduced.

After the heat sink 320 is joined to the main printed circuit board 330 and the metal printed circuit board 340 by the insulating grease applied to the support surface 325, The insulating grease takes heat from the main printed circuit board 330 and the metal printed circuit board 340 and transfers the heat to the heat sink 320.

Insulated grease is used in the general industry and is made of a material with high insulation and heat conductivity based on silicon, synthetic silicon, urethane, etc., so that a metal printed circuit board with a high- 340 to the heat sink 320 to prevent short-circuiting.

1, the electronic control unit 300 includes a steering wheel 101 for a car, a pinion shaft connected to the steering wheel 100 and having a pinion gear 111 formed on one side thereof, A rack bar 109 having a rack gear 112 engaged with the pinion gear 111 and a torque sensor 121 for sensing a steering torque applied to the steering wheel 101 and outputting an electric signal, A shunt resistor 333, a main printed circuit board 330, a metal printed circuit board 340, and a cover (not shown) to generate a control signal based on an electric signal transmitted from the torque sensor 121. [ 310 and an electric motor 130 for generating a steering assist power based on a control signal transmitted from the electronic control unit 300 .

Here, the electronic control unit 300 is the same as the electronic control unit 300 of the electric steering system according to the embodiment of the present invention, and thus the detailed description thereof will be omitted.

According to the present invention, a metal printed circuit board on which a field effect transistor is mounted is horizontally arranged on the main printed circuit board and directly mounted on the heat sink, thereby requiring a jig or an additional process for coupling the metal printed circuit board to the main printed circuit board So that the manufacturing and assembling properties are improved and the manufacturing cost is reduced.

The metal printed circuit board and the printed circuit board and the heat sink are coated with insulating grease having good insulation and heat dissipation to prevent breakage of the field effect transistor due to high temperature and to prevent errors, It is possible to maximize the heat radiation effect while reducing the cost.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

310: cover 320: heat sink
325: Support surface 330: Main printed circuit board
333: Shunt resistor 340: Metal printed circuit board
345: field effect transistor 350: fastening member

Claims (10)

An electronic control unit of an electric steering system including a heat sink, a shunt resistor, a main printed circuit board and a metal printed circuit board,
The metal printed circuit board is arranged in parallel to the main printed circuit board, the terminal of the metal printed circuit board is coupled to the main printed circuit board, and the metal board of the metal printed circuit board is coupled to the heat sink Of the electric steering system. delete The method according to claim 1,
Wherein the heat dissipation plate is provided with a corresponding support surface so that the metal printed circuit board and the main printed circuit board are arranged in parallel. The method according to claim 1,
Wherein the heat sink is coated with insulating grease at a corresponding position of the shunt resistor and the metal printed circuit board to be coupled to the main printed circuit board and the metal printed circuit board. The method of claim 3,
Wherein the support surface of the heat dissipation plate is formed at a corresponding position of the shunt resistor and the metal printed circuit board, and the support surface is coated with insulating grease and is coupled to the main printed circuit board and the metal printed circuit board Electronic control device of electric steering system. A motor-driven steering system of an automobile including a motor for generating a steering assist power based on a control signal transmitted from an electronic control device including a heat sink, a shunt resistor, and a main printed circuit board and a metal printed circuit board,
The electronic control device includes:
The metal printed circuit board is arranged in parallel to the main printed circuit board, the terminal of the metal printed circuit board is coupled to the main printed circuit board, and the metal board of the metal printed circuit board is coupled to the heat sink Electric steering system of an automobile. delete The method according to claim 6,
Wherein the heat dissipation plate is provided with a corresponding support surface so that the metal printed circuit board and the main printed circuit board are arranged side by side and are coupled to each other. The method according to claim 6,
Wherein the heat sink is coated with insulating grease at a corresponding position of the shunt resistor and the metal printed circuit board to be coupled to the main printed circuit board and the metal printed circuit board. 9. The method of claim 8,
Wherein the support surface of the heat dissipation plate is formed at a corresponding position of the shunt resistor and the metal printed circuit board, and the support surface is coated with insulating grease and is coupled to the main printed circuit board and the metal printed circuit board Electric motorized steering of a car.
KR1020100025685A 2010-03-23 2010-03-23 Eletronic Control Unit of Electric Power Steering Apparatus and Electric Power Steering Apparatus for Vehicle having The Same KR101393156B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100025685A KR101393156B1 (en) 2010-03-23 2010-03-23 Eletronic Control Unit of Electric Power Steering Apparatus and Electric Power Steering Apparatus for Vehicle having The Same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100025685A KR101393156B1 (en) 2010-03-23 2010-03-23 Eletronic Control Unit of Electric Power Steering Apparatus and Electric Power Steering Apparatus for Vehicle having The Same

Publications (2)

Publication Number Publication Date
KR20110106575A KR20110106575A (en) 2011-09-29
KR101393156B1 true KR101393156B1 (en) 2014-05-09

Family

ID=44956357

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100025685A KR101393156B1 (en) 2010-03-23 2010-03-23 Eletronic Control Unit of Electric Power Steering Apparatus and Electric Power Steering Apparatus for Vehicle having The Same

Country Status (1)

Country Link
KR (1) KR101393156B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150114046A (en) * 2014-03-31 2015-10-12 대우전자부품(주) Pcb having cooling and grounding
CN109318982B (en) * 2018-08-02 2021-05-25 江苏大学 Parameter matching method for hybrid power steering system

Also Published As

Publication number Publication date
KR20110106575A (en) 2011-09-29

Similar Documents

Publication Publication Date Title
EP1780094B1 (en) Control unit for electric power steering apparatus for automobile
JP4909961B2 (en) Control device for electric power steering
JP5067159B2 (en) Electric power steering device
US20130119908A1 (en) Electronic control unit for electric power steering
US8520394B2 (en) Control device
US20150274197A1 (en) Electronic controller for electric power steering
JP5250329B2 (en) Electric power steering control device and electric power steering device
JP6522358B2 (en) Electric drive device and electric power steering device
WO2021033678A1 (en) Electric powered drive device, and method for assembling electric powered drive device
JP2009078690A (en) Electrical power steering device
JP2013063689A (en) Electric power steering device
KR101393156B1 (en) Eletronic Control Unit of Electric Power Steering Apparatus and Electric Power Steering Apparatus for Vehicle having The Same
JP5229612B2 (en) Electric power steering device
EP2635096B1 (en) Control unit for electric motor and vehicle steering system including the same
KR101204148B1 (en) Electronic Control Unit of Electric Power Steering Apparatus
JP6486250B2 (en) Electric drive
US8981605B2 (en) Motor drive apparatus with substrate fixed, member and rotation angle sensor
JP2012245848A (en) Electric power steering device
JP2013122867A (en) Electric unit
KR20090097365A (en) Electric power steering apparatus
KR101188467B1 (en) Electric Power Steering Apparatus Equipped With One Board Type of Electronic Control Unit
KR102486396B1 (en) Power connector structure of motor and electronic control apparatus having the same
JP6060555B2 (en) CONTROLLER FOR ELECTRIC POWER STEERING DEVICE, ELECTRIC POWER STEERING DEVICE, AND VEHICLE HAVING THE SAME
JP2004009896A (en) Steering device

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20170320

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20190403

Year of fee payment: 6