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

Composite power system of electric vehicle DC-DC converter and control method

A DC-DC, electric vehicle technology, applied in electric vehicles, electric traction, vehicle energy storage, etc., can solve problems such as system cost increase, achieve high efficiency, and achieve the effect of high-efficiency work

Inactive Publication Date: 2014-08-27
XI AN JIAOTONG UNIV
View PDF6 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A composite power supply generally includes one or more DC-DC converters, but multiple DC-DC converters will increase the cost of the system; existing patents or related products only have one DC-DC converter, batteries and supercapacitors Only one can work alone without the DC-DC converter, which does not solve the problem that both the battery and the supercapacitor can work alone without the DC-DC converter.

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
  • Composite power system of electric vehicle DC-DC converter and control method
  • Composite power system of electric vehicle DC-DC converter and control method
  • Composite power system of electric vehicle DC-DC converter and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention is described in further detail below in conjunction with accompanying drawing:

[0038] refer to figure 1 , the composite power supply system of the electric vehicle DC-DC converter according to the present invention includes a first MOS transistor SW1, a second MOS transistor SW2, a third MOS transistor SW3, a first diode D1, a second diode D2, The third diode D3, the battery pack, the super capacitor UC, the DC-DC converter, the motor inverter 1, the DSP controller 5, the first voltage acquisition circuit 4, the second voltage acquisition circuit 2 and the current acquisition circuit 3, The DC-DC converter includes an energy storage inductance L, a fourth MOS transistor SW4, a fifth MOS transistor SW5, a fourth diode D4, and a fifth diode D5; the anode of the battery pack and the third MOS transistor SW3 The drain of the third MOS transistor SW3 is connected to one end of the energy storage inductor L and the source of the second MOS transistor ...

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 a composite power system of an electric vehicle DC-DC converter and a control method. The composite power system comprises a first MOS tube, a second MOS tube, a third MOS tube, a first diode, a second diode, a third diode, the DC-DC converter, a battery pack, a super capacitor, a motor inverter and a DSP controller which is used for controlling the first MOS tube, the second MOS tube, the third MOS tube and the DC-DC converter. A composite power source is connected or disconnected by controlling the MOS tubes and works efficiently according to different schemes and in different modes according to the magnitude of power, and both the super capacitor and the battery pack can work independently without passing through the DC-DC converter. The composite power system of the electric vehicle DC-DC converter and the control method improve the independent working efficiency of two common power sources; when the DC-DC converter works in a boosting mode, highest-power output is realized and high-efficiency work of the composite power system is realized.

Description

technical field [0001] The invention belongs to the field of vehicle-mounted power supplies for electric vehicles, and relates to a composite power supply system and a control method for DC-DC converters of electric vehicles. Background technique [0002] With the increasingly prominent energy crisis and increasingly serious environmental pollution, people's awareness of energy conservation, emission reduction and sustainable development has been continuously enhanced. With the rapid development of the automobile industry, the R&D and production of green and environmentally friendly new energy vehicles have attracted more and more attention from all over the world, and zero-emission electric vehicles are an inevitable trend in the development of new energy vehicles. [0003] Battery packs for electric vehicles have the characteristics of high energy density but relatively low power density. Only the battery pack cannot meet the high power output requirements of the car unde...

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 Applications(China)
IPC IPC(8): B60L11/18
CPCY02T10/7005Y02T10/7241Y02T10/7022Y02T10/7216Y02T10/72
Inventor 王斌徐俊曹秉刚续丹
Owner XI AN JIAOTONG UNIV
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