Abnormality protection device for operation of electric vehicle

A technology for abnormal protection and electric vehicles, applied in electric vehicles, electrical devices, transportation and packaging, etc., can solve problems such as damaged relays, insurance and motor controllers, and large inrush currents, so as to reduce failure rates and avoid inrush currents Effect

Active Publication Date: 2020-06-23
CONTEMPORARY AMPEREX TECH CO
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the operation of the whole vehicle, due to the abnormal power supply voltage of the relay and the vibration, the contacts are abnormally

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
  • Abnormality protection device for operation of electric vehicle
  • Abnormality protection device for operation of electric vehicle
  • Abnormality protection device for operation of electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, various implementation modes of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in this application can also be realized.

[0034] At present, the basic structure of the high-voltage circuit of the main circuit of electric vehicles is as follows: figure 1As shown, the positive pole of the battery pack is represented as BAT+, the negative pole of the battery pack is represented as BAT-, the fuse (Fuse) inside the battery pack is r...

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 embodiment of the invention belongs to the field of new energy vehicles and discloses an abnormality protection device for the operation of an electric vehicle. The device comprises an inner sidevoltage detection module, an outer side voltage detection module, a judgment module and a control module; the inner side voltage detection module is used for detecting the voltage of the first end ofa main positive relay in the high-voltage loop of the electric vehicle and inputting the voltage of the first end of the main positive relay to the judgment module; the outer side voltage detection module is used for detecting and obtaining the voltage of the second end of the main positive relay and inputting the voltage of the second end of the main positive relay to the judgment module; the judgment module is used for outputting a switching-off indication signal to the control module after identifying that the abnormal switching off of the main positive relay according to the voltage of thefirst end of the main positive relay and the voltage of the second end of the main positive relay; and the control module is used for switching off the coil drive of the main positive relay accordingto the switching-off indication signal. Therefore, the situation that the relay is switched on again after being abnormally switched off is avoided, the safe operation of the whole vehicle is guaranteed, and the failure rate of the vehicle is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the field of new energy vehicles, and in particular to an abnormality protection device during operation of an electric vehicle. Background technique [0002] With the increasing popularity of new energy vehicles such as electric vehicles, hybrid electric vehicles (HEV), and plug-in hybrid electric vehicles (PHEV), the safety of new energy vehicles has attracted more and more attention from the industry and users . The failure rate of high-voltage batteries and motor components on new energy vehicles has attracted more and more attention from customers. [0003] The failure rate of main components such as relays, fuses and motor controllers in the battery is too high, and the cost and time of after-sales processing are too long, causing more and more customer complaints. [0004] In the process of researching the existing technology, the inventor found that: in the existing control scheme, when the v...

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): B60L3/00
CPCB60L3/0023
Inventor 马行黄学文
Owner CONTEMPORARY AMPEREX TECH CO
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