Intelligent charging device for electric vehicles

A technology for intelligent charging and electric vehicles, applied in electric vehicles, battery circuit devices, circuit devices, etc., can solve the problems of low degree of intelligence of the charging system, low market penetration rate of electric vehicles, and damage to the life of battery packs, so as to improve the overall The effect of management level, shortened charging time, low power consumption

Inactive Publication Date: 2011-11-09
泰邺电子(苏州)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the on-board charging system for electric vehicles in China (including the F3E electric vehicle already on the market by BYD) is still an ordinary charging system. An important reason for the low penetration rate of the electric vehicle market
[0003] The large-scale fast charging stations currently planned to be built in China are similar to the refueling piles in gas stations. Theoretically, 70% to 80% of the electricity can be charged in a few minutes by using the fast charging method, but its essence is extensive constant voltage and high current power supply. It will cause damage to the life of the battery pack or even directly damage the battery pack

Method used

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Embodiment Construction

[0016] Such as figure 1 The electric vehicle intelligent charging device shown includes an AC grid interface module, which is different in that: the output end of the AC grid interface module is connected to the input end of the AC-DC rectifier module, and the AC-DC The output end of the rectifier module is connected to the input end of the DC-AC high-frequency isolation module; the output end of the DC-AC high-frequency isolation module is connected to the input end of the AC-DC output module; the output of the AC-DC output module The terminal is connected to the charging interface module.

[0017] In view of a preferred embodiment of the present invention, power electronic switching devices are all provided in the AC-DC rectification module, DC-AC high-frequency isolation module and AC-DC output module. With this, the range of electric energy conversion power that can be realized can reach tens of kilowatts, which fully meets the needs of fast charging of large-capacity bat...

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Abstract

The invention relates to an intelligent charging device for electric vehicles. The intelligent charging device comprises an AC power grid interface module, and is characterized in that: the output end of the AC power grid interface module is connected with the input end of an AC-DC rectification module; the output end of the AC-DC rectification module is connected to the input end of a DC-AC high frequency isolation module; the output end of the DC-AC high frequency isolation module is connected to the input end of an AC-DC output module; and the output end of the AC-DC output module is connected with a charging interface module. The intelligent charging device for the electric vehicles improves conversion efficiency by adopting a zero-current switching (ZCS) technology, simultaneously reduces harmonic pollutions to a power grid and increases a power factor by adopting a pulse width modulation (PWM) rectification technology, and has two-way energy flow and control capability to reduce the wasting of electric energy.

Description

technical field [0001] The invention relates to a charging device, in particular to an electric vehicle intelligent charging device. Background technique [0002] At present, the on-board charging system for electric vehicles in China (including the F3E electric vehicle already on the market by BYD) is still an ordinary charging system. This is an important reason for the low market penetration rate of electric vehicles. [0003] The large-scale fast charging stations currently planned to be built in China are similar to the refueling piles in gas stations. Theoretically, 70% to 80% of the electricity can be charged in a few minutes by using the fast charging method, but its essence is extensive constant voltage and high current power supply. It will cause damage to the life of the battery pack or even directly damage the battery pack. Contents of the invention [0004] The object of the present invention is to provide an electric vehicle intelligent charging device in o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/04H02H7/18
Inventor 刘正文
Owner 泰邺电子(苏州)有限公司
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