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Charging method based on intelligent electric automobile charging system

A technology for electric vehicles and intelligent charging, which is applied in the direction of electric vehicle charging technology, electric vehicles, and secondary battery charging/discharging, etc. Adverse effects, lithium-ion battery over (under) voltage and other problems, to achieve the effect of optimizing the charging process, avoiding impact, and reducing wiring

Active Publication Date: 2014-12-24
YUEQING BADA OPTICAL ELECTRICAL TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is precisely because there are always differences in the characteristics of individual batteries, it is easy to cause over (under) voltage of some lithium-ion battery cells during the charging (discharging) process, resulting in some batteries being fully charged (discharged) and some batteries then it is not full (discharged)
This will seriously affect the service life of the battery, and then adversely affect the overall use and life of the lithium-ion battery pack, making the performance of the battery pack not reach the original level of the single battery, resulting in a shortened service life of several times or even a dozen times

Method used

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  • Charging method based on intelligent electric automobile charging system
  • Charging method based on intelligent electric automobile charging system
  • Charging method based on intelligent electric automobile charging system

Examples

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Embodiment Construction

[0023] figure 1 It is a block diagram showing an electric vehicle intelligent charging system according to the present invention, and the electric vehicle intelligent charging system includes: an AC / DC converter 2 connected to a distribution network 1 for converting the alternating current of the distribution network 1 into direct current, the AC / DC converter 2 includes a current conversion module and a PWM pulse width modulation module, the current conversion module rectifies and transforms the input 220V mains power to obtain a certain charging current, and the PWM pulse width modulation module controls signal to control the output of the AC / DC converter 2; the harmonic detection module 4 is used to detect the harmonics injected into the distribution network by the charging system in real time; the filter module 4 is used to eliminate the harmonics injected into the distribution network 1 by the charging system in real time Multiple charging modules 5 are used to charge mult...

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Abstract

The invention relates to a charging method based on an intelligent electric automobile charging system. By means of the method, the state of a single lithium ion battery of an electric automobile battery pack is detected in the charging process, balanced and self-adaptive charging is carried out according to the state of the battery and the state of a power distribution network, and the service life of the battery is prolonged. The system is further provided with a filter, and therefore harmonic waves injected into the power distribution network in the charging process can be reduced.

Description

technical field [0001] The invention relates to an intelligent charging method for an electric vehicle. Background technique [0002] Electric vehicles can reduce human's dependence on oil resources. With the depletion of global oil resources, electric vehicles are favored compared with traditional fuel vehicles. After the large-scale application of electric vehicles, it will bring new challenges to the development of charging facilities and the operation of the power grid: new load growth will be triggered; the existence of nonlinear components such as rectifiers in chargers will cause a large amount of power harmonic pollution, resulting in power The quality is deteriorating day by day, increasing the difficulty of distribution network operation and management. [0003] Under the background of smart grid, intelligent management of electric vehicle charging can avoid the adverse impact of electric vehicle charging demand on the grid and improve the operation efficiency of ...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44B60L11/18
CPCY02E60/10Y02T10/70Y02T90/16
Inventor 邓亮戈周洪全鲜景润李果
Owner YUEQING BADA OPTICAL ELECTRICAL TECH CO LTD
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