Method for preventing motor rotation blockage of automotive electric trunk and position sensor used thereby

A technology of motor stall and current sensor, applied in electromechanical devices, emergency protection circuit devices, electrical components, etc., can solve the problems of motor stall, trunk motor stall, stuck trunk lid, etc., to prevent stall , The effect of perfect control and accurate judgment

Active Publication Date: 2010-12-15
CHERY AUTOMOBILE CO LTD
View PDF3 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For the convenience of users, electric trunks with automatic opening and closing functions have appeared on some mid-to-high-end cars, but some functions of this kind of electric trunks have not been perfected, for example, how to prevent the trunk motor from stalling
During the opening and closing process of the trunk lid, obstacles may be encountered and cause the motor to stall. This involves the obstacle detection and anti-pinch control of the trunk. The pinch control can refer to the anti-pinch control method of the electric window, but t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preventing motor rotation blockage of automotive electric trunk and position sensor used thereby
  • Method for preventing motor rotation blockage of automotive electric trunk and position sensor used thereby
  • Method for preventing motor rotation blockage of automotive electric trunk and position sensor used thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In the method for preventing the motor of an electric trunk of an automobile from stalling in this embodiment, the opening and closing device of the electric trunk is composed of a control unit, a sensor and a transmission mechanism, the transmission mechanism includes a motor and a hinge, and the sensor includes a A position sensor for the position of the case cover and a current sensor for detecting the current of the motor, the control unit receives signals from the position sensor and the current sensor, and controls the operation of the motor, specifically including the following steps:

[0025] First, according to whether the opening angle of the trunk lid is greater than 10 degrees, the opening process is divided into the initial opening stage (the opening angle is less than or equal to 10 degrees) and the opening stable stage (the opening angle is greater than 10 degrees), and corresponding to the initial opening stage. The average value of the initial current an...

Embodiment 2

[0028] Such as figure 2 As shown, the difference from Embodiment 1 is that in this embodiment, during the opening process of the trunk lid, the control unit selects the corresponding average current value according to the position of the trunk lid to compare with the current value of the motor. When the difference between the two exceeds The current threshold at this stage, the control unit continuously samples the information of the position sensor, if the position of the trunk lid obtained by continuous sampling is the same, it means that the trunk lid encounters an obstacle, the control unit controls the motor to reverse, otherwise continue to execute the original The opening action to prevent misjudgment.

Embodiment 3

[0030]In the method for preventing the motor of an electric trunk of an automobile from stalling in this embodiment, the opening and closing device of the electric trunk is composed of a control unit, a sensor and a transmission mechanism, the transmission mechanism includes a motor and a hinge, and the sensor includes a A position sensor for the position of the case cover and a current sensor for detecting the current of the motor, the control unit receives signals from the position sensor and the current sensor, and controls the operation of the motor, specifically including the following steps:

[0031] First, according to whether the opening angle of the trunk lid is greater than 90 degrees, the closing process is divided into the initial stage of closing (the opening angle is greater than 90 degrees) and the stable stage of closing (the opening angle is less than or equal to 90 degrees), and corresponding to the initial stage of closing. The current average value and the i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention aims to provide a method for preventing motor rotation blockage of an automotive electric trunk and a position sensor used thereby so as to avoid the rotation blockage of a motor, guarantee the safe use of the electric trunk and meet requirements on humanized automobile design. In the method for preventing the motor rotation blockage of the automotive electric trunk of the invention, an opening and closing device of the electric trunk consists of a control unit, a sensor and a transmission mechanism, wherein the transmission mechanism comprises the motor and a hinge; the sensor comprises the position sensor for detecting the position of an electronic trunk lid and a current sensor for detecting the current volume of the motor; and the control unit judges whether the movement of the electronic trunk lid is obstructed by a barrier according to signals of the position sensor and the current sensor, so that the rising, descending or stop actions of the electronic trunk are controlled, the motor rotation blockage of the automotive electric trunk is effectively prevented, and barrier detection and anti-clamping of the electric trunk are realized. Thus, the safe use of the electric trunk is guaranteed and the requirements on the humanized automobile design are met.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to a method for preventing motor lock-up of an electric trunk of an automobile with automatic opening and closing functions. Background technique [0002] For the convenience of users, electric trunks with automatic opening and closing functions appear on some middle and high-end cars at present, but some functions of this kind of electric trunks have not been perfected, such as how to prevent the trunk motor from stalling. During the opening and closing process of the trunk lid, obstacles may be encountered and cause the motor to stall. This involves the obstacle detection and anti-pinch control of the trunk. The pinch control can refer to the anti-pinch control method of the electric window, but the movement of the trunk is different from the linear motion of the window. The opening angle of the trunk must be considered. In addition to the friction of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02H7/085H02K29/08
Inventor 李芳珍李娟娟周宏
Owner CHERY AUTOMOBILE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap