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Electric automobile modularized vehicle-mounted battery charger and charging method thereof

An on-board charger, electric vehicle technology, applied in electric vehicles, battery circuit devices, current collectors, etc., can solve problems such as heavy workload, unfavorable maintenance and standardization, and achieve cost-effective, high-efficiency power conversion and fast protection, Realize the effect of power conversion and fast protection

Inactive Publication Date: 2014-01-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the on-board chargers in the prior art are usually independently developed for electric vehicles with different voltages and capacity levels. This method not only has a large workload, but also is not conducive to maintenance and standardization.

Method used

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  • Electric automobile modularized vehicle-mounted battery charger and charging method thereof
  • Electric automobile modularized vehicle-mounted battery charger and charging method thereof
  • Electric automobile modularized vehicle-mounted battery charger and charging method thereof

Examples

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Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the modular electric vehicle on-board charger of this embodiment includes a charging auxiliary power supply M102, a switching power supply group M103, a linear power supply collection module M104, and a main controller M105. The main control chip of the charger auxiliary power supply M102 adopts a PFC (Power Factor Correction, power factor correction) single-ended forward PWM control chip FAN4800A, which can obtain higher power factor and lower total harmonic distortion. When the charging auxiliary power supply M102 is connected to the ground charging equipment M101, the ground charging The device M101 is a charging pile with an output voltage of 220V AC mains, which enables the charging auxiliary power supply M102 to output ±15V / 0.2A, 5V / 0.5A and 36V / 2A DC power, of which 36V DC power is used by other vehicle equipment. When all the batteries in the vehicle are dead, the necessary on-board equipment can be started, such as the instrument pane...

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Abstract

The invention discloses an electric automobile modularized vehicle-mounted battery charger and a charging method thereof. The vehicle-mounted battery charger comprises an auxiliary charging power source, a switching power package, a linear power collecting module and a main controller. The auxiliary charging power source outputs direct current power used for supplying power for the linear power collecting module and the main controller by being connected with ground charging equipment, the linear power collecting module is respectively connected with the switching power package and the main controller, the switching power package is formed by a plurality of switching power units through series connection and parallel connection, and each switching power unit is connected with the main controller through an RS-485 bus. The main controller is connected with the ground charging equipment through a control guiding circuit, and the main controller is respectively connected with a rechargeable battery module and an instrument panel through CAN buses. The vehicle-mounted battery charger is assembled in a modularized mode, the PFC technology, the ZVS technology, the current double technology and the synchronous rectification technology are applied comprehensively, power factors are improved, and switching losses and electromagnetic interference are reduced.

Description

technical field [0001] The invention relates to an electric vehicle on-board charger and a charging method thereof, in particular to a modular electric vehicle on-board charger and a charging method thereof, belonging to the field of electric vehicle charging. Background technique [0002] The on-board charger is a charging device installed on an electric vehicle, which converts the input AC power into the DC power required by the battery charging system, and its output voltage and current are adjusted according to the charging method and charging process of the battery. Due to the variety of types, voltages and capacity levels of electric vehicles, only the voltage levels include 72V, 144V, 288V, 336V and 384V. Currently, on-board chargers in the prior art are usually independently developed for electric vehicles with different voltages and capacity levels. This method not only has a large workload, but is also not conducive to maintenance and standardization. Contents of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/10
Inventor 李向阳
Owner SOUTH CHINA UNIV OF TECH
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