Electric automobile, and operation signal sampling method and AD conversion system thereof

A technology of electric vehicles and sampling systems, applied in the direction of analog-to-digital converters, etc., can solve the problems of reducing the performance of electric vehicles, abnormal stop of vehicles, and easy triggering of malfunctions, etc., to achieve high reliability, improve reliability, and improve sampling accuracy Effect

Inactive Publication Date: 2015-01-21
BYD CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sampling accuracy of the control chip ECU can reach up to 5%, and there is no room for improvement.
It can be seen that in the prior art, the improvement is mainly the accuracy of the peripheral channel, and even an accuracy rate of one-thousandth can be achieved. However, if the 5% sampling accuracy (ie, linear distortion) of the control chip ECU

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
  • Electric automobile, and operation signal sampling method and AD conversion system thereof
  • Electric automobile, and operation signal sampling method and AD conversion system thereof
  • Electric automobile, and operation signal sampling method and AD conversion system thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.

[0019] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and are not intended to limit the invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplificat...

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 discloses an operation signal sampling method of an electric automobile. The method comprises the steps that a sampling system for sampling operation signals of electric automobile is verified to obtain a sampling mathematic model of the sampling system; the sampling system obtains analog operation signals of the electric mobile and corrects the analog operation signals according to the sampling mathematic model; and the corrected analog operation signals are converted to digital operation signals. According to the operation signal sampling method, system errors of an AD sampling circuit of the electric automobile can be reduced, the operation signal sampling precision is improved, the electric automobile can be controlled more accurately, and the reliability of the electric automobile is improved. The invention also discloses an AD conversion system of the electric automobile as well as the electric automobile with the AD conversion system.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a sampling method of an operating signal of an electric vehicle, an AD conversion system of the electric vehicle, and an electric vehicle with the AD conversion system. Background technique [0002] During the operation of electric vehicles, it is necessary to collect analog signals such as bus voltage, phase line current, and accelerator brake of electric vehicles for processing. The accuracy of the collected data directly affects the control accuracy and judgment of the control chip. However, the ADC of electric vehicles ( Analog-to-Digital Converter (analog / digital conversion) sampling system has systematic errors, and sometimes even causes misjudgment by the control chip. For example, if the bus voltage value collected is higher than the actual voltage value, the circuit protection circuit may be triggered in advance, such as causing Malfunction of over-voltage protection...

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): H03M1/12
Inventor 黄炳健郭彩芳王伟群
Owner BYD 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