CN109229202B - Electric power steering device of new energy automobile - Google Patents

Electric power steering device of new energy automobile Download PDF

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Publication number
CN109229202B
CN109229202B CN201811340974.9A CN201811340974A CN109229202B CN 109229202 B CN109229202 B CN 109229202B CN 201811340974 A CN201811340974 A CN 201811340974A CN 109229202 B CN109229202 B CN 109229202B
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China
Prior art keywords
steering
sensor
power
assisted
fault
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Application number
CN201811340974.9A
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Chinese (zh)
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CN109229202A (en
Inventor
龚琼
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JIANGSU TIANLONG VEHICLE PARTS Co.,Ltd.
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Jiangsu Tianlong Vehicle Parts Co ltd
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Priority to CN201811340974.9A priority Critical patent/CN109229202B/en
Publication of CN109229202A publication Critical patent/CN109229202A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/04Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/0481Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D5/00Power-assisted or power-driven steering
    • B62D5/04Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/0481Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
    • B62D5/0496Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures by using a temperature sensor

Abstract

The invention relates to the technical field of steering systems, in particular to an electric power steering device of a new energy automobile, which comprises a steering power-assisted mechanism, an electric power-assisted module and a safety detection module, wherein the steering power-assisted mechanism comprises a steering wheel, the steering wheel is connected with a steering input shaft, the steering input shaft is connected with a rack-and-pinion steering gear, the rack-and-pinion steering gear is connected with a steering tie rod, the steering tie rod is connected with wheels, the steering input shaft is connected with a speed reducing mechanism, the left side of the speed reducing mechanism is connected with a clutch, the left side of the clutch is connected with a power-assisted motor, the electric power-assisted module comprises an ECU (electronic control unit), a corner sensor, a torque sensor, a speed sensor and a storage battery, the safety detection module comprises a fault detection device, a singlechip processor, an alarm and a central control display, the driver can not find the potential safety hazard in time in the driving process.

Description

Electric power steering device of new energy automobile
Technical Field
The invention relates to the technical field of steering systems, in particular to an electric power steering device of a new energy automobile.
Background
The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure. The new energy automobile comprises a pure electric automobile, a range-extended electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile, other new energy automobiles and the like.
At present, the so-called hydraulic power-assisted or electric power-assisted steering system which realizes the power-assisted steering of the vehicle by means of the external force provided by hydraulic pressure or a motor is widely used on various vehicles, and the practical range of the electric power-assisted steering system is gradually expanded due to the characteristics of convenient control, quick response, low energy consumption and the like. However, the conventional electric power steering device is lack of fault detection and safety early warning, so that a driver cannot find the fault in time in the driving process, and potential safety hazards exist.
In order to solve the problem that a driver cannot find the electric power steering device in time in the driving process due to the lack of fault detection and safety early warning, the electric power steering device of the new energy automobile is designed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses an electric power steering device of a new energy automobile, which can solve the problem that the existing electric power steering device is lack of fault detection and safety early warning, so that a driver cannot find the fault in time in the driving process, and the potential safety hazard exists.
The invention is realized by the following technical scheme: the electric power-assisted steering device of the new energy automobile comprises a steering power-assisted mechanism, an electric power-assisted module and a safety detection module, wherein the steering power-assisted mechanism comprises a steering wheel, the bottom of the steering wheel is rotatably connected with a steering input shaft, the bottom of the steering input shaft is connected with a rack and pinion steering gear, the left side and the right side of the rack and pinion steering gear are both connected with steering tie rods, one sides of the two sets of the steering tie rods, which are far away from each other, are both connected with wheels, the steering input shaft is connected with a speed reducing mechanism, the speed reducing mechanism is positioned above the rack and pinion steering gear, the left side of the speed reducing mechanism is connected with a clutch, the left side of the clutch is connected with a power-assisted motor, the electric power-assisted module comprises an ECU controller, a corner sensor, a torque sensor, a speed sensor and a storage battery, and the, the safety detection module comprises a fault detection device, a single chip microcomputer processor, an alarm and a central control display screen, the fault detection device, the alarm and the central control display screen are respectively electrically connected with the single chip microcomputer processor, and the fault detection device is respectively electrically connected with the storage battery, the ECU controller and the power-assisted motor.
Preferably, the clutch is a single-plate dry electromagnetic clutch, and the clutch is configured such that when the vehicle speed reaches a predetermined value, the clutch is disengaged to temporarily stop the assist action of the assist motor, and when the motor fails, the clutch is automatically disengaged.
Preferably, reduction gears is worm gear reduction gear, and the worm wheel adopts the nylon materials, sets up like this and can make assist drive device's structure compacter, and impact load is little, the transmission is steady, the noise is low.
Preferably, the torque sensor is a non-contact torque sensor, so that the torque sensor can be smaller in size and higher in torque transmission precision.
Preferably, a temperature sensor, a voltage sensor, a current sensor and an electric leakage sensor are arranged in the fault detection device, so that the fault detection device can detect fault information of the storage battery, the ECU controller and the power-assisted motor in different aspects.
Preferably, the alarm comprises a warning light and a buzzer, and the arrangement is such that the alarm can give an alarm in different ways.
Preferably, the central control display screen can display a plurality of different fault codes, and the arrangement enables the central control display screen to display different fault codes, so that a driver can judge different faults.
The invention has the beneficial effects that: the invention has reasonable structure design, when a steering wheel in a steering power-assisted mechanism starts to rotate, a steering input shaft is driven to rotate, a rotation angle sensor and a torque sensor in an electric power-assisted module transmit the rotation angle and the torque of the steering input shaft to an ECU controller, a vehicle speed sensor transmits the real-time vehicle speed to the ECU controller, the ECU controller controls a power-assisted motor and a clutch to start to work under the power supply of a storage battery, the power-assisted motor and the clutch start to work and transmit the power to a speed reducing mechanism, the speed reducing mechanism plays a role in reducing the power and transmits the power to the steering input shaft and a rack and pinion steering gear, the rack and pinion steering gear drives a tie rod to work, the tie rod swings left and right to drive wheels to swing left and right, and the effect of steering power assistance is achieved, and meanwhile, a temperature sensor, a voltage sensor and a, The current sensor and the electric leakage sensor can detect the temperature, the voltage and the current of a storage battery, an ECU controller and an electric power-assisted motor in the power-assisted steering device in real time, and can detect whether the storage battery has the electric leakage condition or not, then the detected information is sent to the single chip processor, and the single chip processor processes the information, then the warning light in the alarm is controlled to flash and the buzzer starts to sound, so as to remind the driver, meanwhile, the singlechip processor can generate different fault codes according to the processed fault information and send the fault codes to the central control display screen for display, the driver can analyze the position of the fault and the reason of the fault through the fault code displayed on the central control display screen, and then the driver can take safety measures in time, so that traffic accidents are avoided.
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, 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 the drawings without creative efforts.
FIG. 1 is a schematic structural view of the invention;
FIG. 2 is a schematic view of the steering assist mechanism of the invention;
FIG. 3 is a schematic view of an inventive electric assist module;
FIG. 4 is a schematic diagram of the inventive security detection module;
FIG. 5 is a schematic view of the steering principle of the invention;
fig. 6 is a schematic diagram of the safety detection principle of the invention.
The reference numbers are as follows: 1-steering power-assisted mechanism, 101-steering wheel, 102-steering input shaft, 103-rack and pinion steering gear, 104-steering tie rod, 105-wheel, 106-speed reducing mechanism, 107-clutch, 108-power-assisted motor, 2-electric power-assisted module, 201-ECU controller, 202-corner sensor, 203-torque sensor, 204-speed sensor, 205-storage battery, 3-safety detection module, 301-fault detection device, 302-single chip processor, 303-alarm and 304-central control display screen.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to FIGS. 1-6: the utility model provides a new energy automobile electric power assisted steering device which characterized in that: the steering power-assisted mechanism 1 comprises a steering power-assisted mechanism 1, an electric power-assisted module 2 and a safety detection module 3, wherein the steering power-assisted mechanism 1 comprises a steering wheel 101, the bottom of the steering wheel 101 is rotatably connected with a steering input shaft 102, the bottom of the steering input shaft 102 is connected with a rack and pinion steering gear 103, the left side and the right side of the rack and pinion steering gear 103 are both connected with steering tie rods 104, one sides of the two groups of steering tie rods 104, which are far away from each other, are both connected with wheels 105, the steering input shaft 102 is connected with a speed reducing mechanism 106, the speed reducing mechanism 106 is positioned above the rack and pinion steering gear 103, the speed reducing mechanism 106 is a worm and gear reducing device, a worm gear is made of nylon materials, the arrangement can enable the structure of the power-assisted mechanism to be more compact, the impact load to be small, the transmission to be stable, the noise to be, the clutch 107 is separated, the boosting action of the boosting motor 108 is temporarily stopped, and when the motor fails, the clutch 107 can also be automatically separated, the boosting motor 108 is connected to the left side of the clutch 107, the electric boosting module 2 comprises an ECU controller 201, a rotation angle sensor 202, a torque sensor 203, a speed sensor 204 and a storage battery 205, the boosting motor 108, the rotation angle sensor 202, the torque sensor 203, the speed sensor 204 and the storage battery 205 are respectively and electrically connected with the ECU controller 201, the safety detection module 3 comprises a fault detection device 301, a single chip processor 302, an alarm 303 and a central control display screen 304, a temperature sensor, a voltage sensor, a current sensor and an electric leakage sensor are arranged in the fault detection device 301, so that the fault detection device 301 can detect fault information of different aspects of the storage battery 205, the ECU controller 201 and the boosting motor 108, and siren 303 includes warning light and bee calling organ, set up like this and can make siren 303 send out the police dispatch newspaper through the mode of difference, and well accuse display screen 304 can show a plurality of different fault codes, set up like this and make well accuse display screen 304 can be through showing different fault codes, thereby make the driver can judge different trouble, and fault detection device 301, electrical connection between siren 303 and well accuse display screen 304 respectively and singlechip treater 302, and battery 205, ECU controller 201 and helping hand motor 108 respectively with fault detection device 301 electrical connection.
When the invention is used, when a steering wheel 101 in a steering power-assisted mechanism 1 starts to rotate, a steering input shaft 102 is driven to rotate, a rotation angle sensor 202 and a torque sensor 203 in an electric power-assisted module 2 transmit the rotation angle and the torque of the steering input shaft 102 to an ECU controller 201, a vehicle speed sensor 204 transmits the real-time vehicle speed to the ECU controller 201, the ECU controller 201 controls a power-assisted motor 108 and a clutch 107 to start to work under the power supply of a storage battery 205, the power-assisted motor 108 and the clutch 107 start to work and transmit the power to a speed reducing mechanism 106, the speed reducing mechanism 106 plays a speed reducing role in the power and transmits the power to the steering input shaft 102 and a rack-and-pinion steering gear 103, the rack-pinion steering gear 103 drives a steering tie rod 104 to work, the steering tie rod 104 swings left and right to drive wheels 105 to swing left and right to further achieve the effect of steering power assistance, meanwhile, the temperature sensor, the voltage sensor, the current sensor and the electric leakage sensor in the fault detection device 301 can detect the temperature, the voltage and the current of the storage battery 205, the ECU controller 201 and the power-assisted motor 108 in the power-assisted steering device in real time, can detect whether the electric leakage condition of the storage battery 205 occurs or not, then sends the detected information to the singlechip processor 302, the singlechip processor 302 processes the information, then controls the warning lamp in the alarm 303 to flash and the buzzer to sound, so as to remind a driver, meanwhile, the singlechip processor 302 can generate different fault codes according to the processed fault information and send the fault codes to the central control display screen 304 for displaying, so that the driver can analyze the position where the fault occurs and the reason of the fault through the fault codes displayed on the central control display screen 304, and then the driver can take safety measures in time, thereby avoiding the occurrence of traffic accidents.
The vehicle speed sensor, the rotation angle sensor, the torque sensor, the temperature sensor, the voltage sensor, the current sensor, the leakage sensor, the single-chip processor, the storage battery, the ECU controller and the power assisting motor mentioned in the above embodiments are all mature technologies mastered by those skilled in the art, and in the present embodiment, only the vehicle speed sensor, the rotation angle sensor, the torque sensor, the temperature sensor, the voltage sensor, the current sensor, the leakage sensor, the single-chip processor, the storage battery, the ECU controller.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (1)

1. The utility model provides a new energy automobile electric power assisted steering device which characterized in that: including steering assist drive device (1), electronic helping hand module (2) and safety inspection module (3), steering assist drive device (1) is including steering wheel (101), steering wheel (101) bottom is rotated and is connected with steering input shaft (102), steering input shaft (102) bottom is connected with rack and pinion steering gear (103), rack and pinion steering gear (103) left and right sides all is connected with tie rod (104), and is two sets of one side that tie rod (104) kept away from each other all is connected with wheel (105), steering input shaft (102) are connected with reduction gears (106), and reduction gears (106) are located rack and pinion steering gear (103) top, reduction gears (106) left side is connected with clutch (107), helping hand motor (108) are connected on clutch (107) left side, electronic helping hand module (2) include ECU controller (201), The safety detection device comprises a rotation angle sensor (202), a torque sensor (203), a speed sensor (204) and a storage battery (205), wherein the electric power-assisted motor (108), the rotation angle sensor (202), the torque sensor (203), the speed sensor (204) and the storage battery (205) are respectively electrically connected with an ECU controller (201), the safety detection module (3) comprises a fault detection device (301), a single-chip microcomputer processor (302), an alarm (303) and a central control display screen (304), the fault detection device (301), the alarm (303) and the central control display screen (304) are respectively electrically connected with the single-chip microcomputer processor (302), and the storage battery (205), the ECU controller (201) and the power-assisted motor (108) are respectively electrically connected with the fault detection device (301); the clutch (107) is a single-plate dry electromagnetic clutch; the speed reducing mechanism (106) is a worm and gear speed reducing device, and a worm gear is made of a nylon material; the torque sensor (203) is a non-contact torque sensor; a temperature sensor, a voltage sensor, a current sensor and a leakage sensor are arranged in the fault detection device (301); the alarm (303) comprises a warning lamp and a buzzer; the central control display screen (304) can display a plurality of different fault codes;
when a steering wheel (101) in a steering power-assisted mechanism (1) starts to rotate, a steering input shaft (102) is driven to rotate, a rotation angle sensor (202) and a torque sensor (203) in an electric power-assisted module (2) transmit rotation angles and torque of the steering input shaft (102) to an ECU controller (201), a vehicle speed sensor (204) transmits real-time vehicle speed to the ECU controller (201), the ECU controller (201) controls a power-assisted motor (108) and a clutch (107) to start to work under the power supply of a storage battery (205), the power-assisted motor (108) and the clutch (107) start to work and transmit power to a speed reducing mechanism (106), the speed reducing mechanism (106) plays a role in reducing the power, then the power is transmitted to the steering input shaft (102) and a rack-and pinion steering gear (103), and a rack-pinion steering gear (103) drives a steering tie rod (104) to work, the steering tie rod (104) swings left and right to drive wheels (105) to swing left and right, so that the steering assistance effect is achieved, meanwhile, a temperature sensor, a voltage sensor, a current sensor and a leakage sensor in the fault detection device (301) can detect the temperature, the voltage and the current of a storage battery (205), an ECU (201) and a power-assisted motor (108) in the steering assistance device in real time, whether the storage battery (205) leaks or not can be detected, then detected information is sent to the single-chip microcomputer processor (302), the single-chip microcomputer processor (302) processes the information, then a warning lamp in the alarm (303) is controlled to flash and a buzzer starts to sound, so that a driver is reminded, meanwhile, the single-chip microcomputer processor (302) can generate different fault codes according to the fault information processed by the single-chip microcomputer, and sends the fault codes to the central control display screen (304) to be displayed, the driver can analyze the position of the fault and the reason of the fault through the fault code displayed on the central control display screen (304), and then the driver can take safety measures in time, so that traffic accidents are avoided.
CN201811340974.9A 2018-11-12 2018-11-12 Electric power steering device of new energy automobile Active CN109229202B (en)

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CN109229202B true CN109229202B (en) 2021-05-25

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Publication number Priority date Publication date Assignee Title
CN110588773A (en) * 2019-09-16 2019-12-20 山东沃华农业科技股份有限公司 Harvester steering control system and harvester thereof
CN114228825A (en) * 2021-12-27 2022-03-25 天津德科智控股份有限公司 Electric power steering control system and method

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