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Pulse width modulation (PWM) rectification, variable-voltage and variable-current pulse charging system of electric vehicle

An electric vehicle and pulse charging technology, applied in electric vehicle charging technology, electric vehicles, battery circuit devices, etc., can solve the problems of shortening the battery life, limited power processing capacity, and inability to promote, and achieves the reduction of harmonic content, The effect of shortening the charging time and suitable for large-scale promotion

Inactive Publication Date: 2011-09-14
CHENGDU QINCHUAN IOT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the electric vehicle on-board charger, its advantage is that whenever the battery needs to be charged, as long as there is an available power socket, it can be charged, but its disadvantage is that the power handling capacity is limited due to the limited space on the vehicle. It can provide low current and slow charging, and the charging time is generally longer. If the traditional charging technology is used, the battery of an electric vehicle needs at least 12 hours for a single charge, and the traditional charging method is too simple to charge, which often shortens the service life of the battery. It is conceivable that charging electric vehicles with traditional technology cannot be promoted at all

Method used

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  • Pulse width modulation (PWM) rectification, variable-voltage and variable-current pulse charging system of electric vehicle
  • Pulse width modulation (PWM) rectification, variable-voltage and variable-current pulse charging system of electric vehicle
  • Pulse width modulation (PWM) rectification, variable-voltage and variable-current pulse charging system of electric vehicle

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Embodiment 1

[0030] Such as figure 1As shown, an electric vehicle PWM rectification and variable voltage and current pulse charging system provided by the present invention includes a rectification module and a charging module, and the rectification module is connected to the AC power grid and the charging module respectively. The rated voltage of the AC power grid in this embodiment The voltage is 380V, and the charging system also includes a DC charging management module, wherein the charging module is composed of a DC input module and a DC output module, and the rectifier module, the DC input module, the DC output module and the DC charging management module are all connected to each other. Independent modules, they are all connected together through the network bus; the functions of the four independent modules are as follows: the rectifier module rectifies and filters the AC input from the power supply, and forms a stable DC output voltage to provide subsequent DC The conversion modul...

Embodiment 2

[0036] Such as figure 1 As shown, an electric vehicle PWM rectification and variable voltage and current pulse charging system provided by the present invention includes a rectification module and a charging module, and the rectification module is connected to the AC power grid and the charging module respectively. The rated voltage of the AC power grid in this embodiment The voltage is 380V, and the charging system also includes a DC charging management module, wherein the charging module is composed of a DC input module and a DC output module, and the rectifier module, the DC input module, the DC output module and the DC charging management module are all connected to each other. Independent modules, they are all connected together through the network bus; the functions of the four independent modules are as follows: the rectifier module rectifies and filters the AC input from the power supply, and forms a stable DC output voltage to provide subsequent DC The conversion modu...

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Abstract

The invention discloses a pulse width modulation (PWM) rectification, variable-voltage and variable-current pulse charging system of an electric vehicle and belongs to a large-size storage battery charging system. The system comprises a rectification module, a charging module and a direct current charging management module; the rectification module is respectively connected with an alternating current power grid and the charging module; the charging module consists of a direct current input module and a direct current output module; the rectification module, the direct current input module, the direct current output module and the direct current charging management module are mutually-independent modules and are contacted together through network buses. The PWM rectification, variable-voltage and variable-current pulse charging system of the electric vehicle has a simple structure, a small size and wide application ranges, can be applied to the charging of all lead-zinc storage batteries, and is applicable for large-scale promotion. Moreover, the charging time of the storage batteries is greatly shortened.

Description

technical field [0001] The invention relates to a large storage battery charging system, more specifically a PWM rectification and variable voltage and variable current pulse charging system for an electric vehicle. Background technique [0002] At present, electric vehicles are not an unfamiliar term. Compared with internal combustion vehicles, electric vehicles have obvious advantages: less pollution and less noise, so the development of electric vehicles is quite rapid. The power supply of electric vehicles is powered by large batteries, so The technology of charging the storage battery is very important. The power of ordinary household charging devices is very small, and the charging speed is not very high, so the charging time is generally longer, but this charging device is not suitable for electric vehicles. The commercial charging device used for charging electric vehicles must meet the requirements of low battery loss, low pollution, and fast speed. Since the large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/04H02J3/01H02J3/18
CPCY02T90/169Y02E40/30Y04S30/14Y02T90/167Y02E40/40
Inventor 邵泽华牟慧文魏小军
Owner CHENGDU QINCHUAN IOT TECH CO LTD
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