Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An electric vehicle DC conversion control system and its control method

A DC conversion and control system technology, applied in electric vehicles, control/regulation systems, electric vehicle charging technology, etc., can solve the problems that DC converters cannot adapt to remote control requirements, achieve high reliability, improve safety, reduce Effects of Electromagnetic Interference

Active Publication Date: 2021-10-22
DONGFENG AUTOMOBILE COMPANY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that the DC converter in the prior art cannot meet the requirements of remote control, and to provide a DC conversion control system and its control method for electric vehicles that can meet the requirements of remote control

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
  • An electric vehicle DC conversion control system and its control method
  • An electric vehicle DC conversion control system and its control method
  • An electric vehicle DC conversion control system and its control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] A DC conversion control system for an electric vehicle. The DC conversion control system includes: a DCDC converter 1, a power battery 2, a storage battery 3 and a VCM4. The positive pole of the power battery 2 is connected to the positive pole input terminal of the DCDC converter 1 through a charging relay 5 The positive pole of the power battery 2 is connected to the positive input terminal of the DCDC converter 1 through the resistor 6 and the pre-charging relay 7 in turn, the negative pole of the power battery 2 is connected to the negative input terminal of the DCDC converter 1, and the charging relay 5 and the control terminals of the pre-charging relay 7 are connected to the control signal output terminal of VCM4; the positive pole of the battery 3 is connected to the positive pole output terminal of the DCDC converter 1, and the positive pole of the battery 3 is connected to the DCDC converter 1 through a fuse. The positive pole of the low-voltage power supply is...

Embodiment 2

[0135] Embodiment 2 is basically the same as Embodiment 1, and its difference is:

[0136] The DCDC converter 1 includes: an incoming EMI filter 11, a full-bridge circuit 12, an outgoing EMI filter 13 and a DSP controller 14, and the input of the DCDC converter 1 passes through the incoming EMI filter 11 It is electrically connected to the input end of the full bridge circuit 12, the output end of the DCDC converter 1 is electrically connected to the output end of the full bridge circuit 12 through the output EMI filter 13, and the control of the DSP controller 14 The signal output end is connected with the signal input end of the control circuit 15, and the MOS signal output end of the control circuit 15 is connected with the signal input end of the MOS drive circuit 151, and the MOS drive circuit 151 controls to move to the full bridge circuit 12 On-off of the MOS tube, the SR signal output end of the control circuit 15 is connected to the signal input end of the SR drive ci...

Embodiment 3

[0138] Embodiment 3 is basically the same as Embodiment 2, and its difference is:

[0139] The input voltage detection port is arranged on the connection line between the incoming EMI filter 11 and the full bridge circuit 12, and the input voltage detection port is connected with the signal input end of the input voltage detection circuit 16. The signal output end of the circuit 16 is connected with the input voltage detection signal end of the DSP controller 14 through the isolation integrated circuit 10; the input current detection port is arranged on the connecting line between the incoming EMI filter 11 and the full bridge circuit 12 , the input current detection port is connected to the signal input end of the input current detection circuit 17, and the signal output end of the input current detection circuit 17 is connected to the input current detection signal end of the DSP controller 14 through the isolation integrated circuit 10; The output line of described outlet EMI...

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

A DC conversion control system for an electric vehicle. The DC conversion control system includes: a DCDC converter, a power battery, a storage battery and a VCM. The positive pole of the power battery is connected to the positive input end of the DCDC converter through a charging relay. The positive pole is connected to the positive input terminal of the DCDC converter through a resistor and the pre-charging relay in turn, the negative pole of the power battery is connected to the negative pole input terminal of the DCDC converter, and the positive pole of the storage battery is connected to the positive pole output terminal of the DCDC converter. The positive pole of the battery is connected to the IGN_ON terminal of the DCDC converter through the insurance and the ON gear switch in turn, the negative pole of the battery is connected to the negative output terminal of the DCDC converter, and the VCM is connected to the DCDC converter signal through the CAN bus. This design can not only realize the remote wake-up and direct wake-up of the DCDC converter, but also has strict control logic and high reliability.

Description

technical field [0001] The invention relates to a DC conversion control system of an electric vehicle and a control method thereof, and is particularly suitable for DC-DC conversion of an electric vehicle. Background technique [0002] With the popularization of new energy vehicles, especially the promotion of pure electric vehicles, the power supply method of vehicle electrical appliances has changed. Different from the power supply method of the traditional fuel vehicle generator, the pure electric vehicle uses a DCDC (direct current to direct current converter) to convert the high voltage power of the power battery into low voltage power, and finally supplies power to the low voltage electrical appliances of the vehicle. According to the adjustment of the national energy policy, there are more and more pure electric vehicles on the market, so DCDC has also been widely used, so the research of DC conversion has become the focus of the design work of new energy vehicles. ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/00H02M1/32H02M1/36H02M1/44H02J7/00B60L58/10B60R16/023
CPCB60R16/0232B60L58/10H02J7/0029H02M1/32H02M1/36H02M1/44H02M3/00H02M1/0003H02M1/325Y02T10/70Y02T90/167Y04S30/12
Inventor 肖聪窦明佳汪斌刘新吴龙王为才徐远林凌
Owner DONGFENG AUTOMOBILE COMPANY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com