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Charging management control method for electric automobile

An electric vehicle and charging management technology, applied in electric vehicle charging technology, electric vehicles, electric traction, etc., can solve the problems of low-voltage battery power loss and inability to replenish low-voltage battery, and achieve a high degree of intelligence.

Active Publication Date: 2018-11-09
CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

But the low-voltage batteries of different models of electric vehicles may have different rated voltages, such as: 12V or 24V; When charging, the low-voltage battery is replenished, which causes the low-voltage battery to lose power

Method used

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  • Charging management control method for electric automobile

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Embodiment Construction

[0019] Attached below figure 1 The present invention is further described.

[0020] A charging management control method for an electric vehicle. After the charging gun of the charging pile is connected to the electric vehicle, the charging management control is performed through the following steps:

[0021] 1) The vehicle controller automatically enters the charging mode; it should be understood that the vehicle controller has various modes such as low-voltage mode, driving mode, and charging mode, and only when the vehicle controller enters the charging mode is it allowed to charge the electric vehicle. Charging; the vehicle controller will automatically enter the charging mode when it detects that a charging cable is connected.

[0022] 2) BMS judges the charging pile type;

[0023] 3) When the charging pile is a DC charging pile, measure the low-voltage supplementary voltage of the DC charging pile and determine whether it is the same as the rated voltage of the low-vol...

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Abstract

The invention relates to the field of electric control of electric automobiles, and aims to provide a charging management control method for an electric automobile capable of effectively avoiding lackof electricity of a low voltage storage battery. The technical scheme is that the charging management control method for the electric automobile includes the following steps: a vehicle controller automatically enters a charging mode; a BMS judges a type of a charging pile; when the charging pile is a direct current charging pile, a low voltage supplementary electricity voltage of the direct current charging pile is measured; when the low voltage supplementary electricity voltage of the direct current charging pile is identical to a rated voltage of the low voltage storage battery of the electric mobile, the low voltage battery is directly charged by a low voltage supplementary electricity interface of the direct current charging pile; and when the low voltage supplementary electricity voltage of the direct current charging pile is different from the rated voltage of the low voltage storage battery of the electric mobile, a direct current converter of the electric automobile is startedand converts high-voltage power of a high-voltage power storage battery into low-voltage power corresponding to the low-voltage storage battery, and electricity is supplemented to the low-voltage storage battery. The charging management control method enables the lack of electricity of the low voltage storage battery to be avoided.

Description

technical field [0001] The invention relates to the field of electronic control of electric vehicles, in particular to a charging management and control method for electric vehicles. Background technique [0002] With the continuous aggravation of energy crisis and environmental problems, electric vehicles using new energy sources have received more and more attention. Electric vehicles can be charged by direct current or alternating current. DC charging is to charge electric vehicles directly through DC charging piles; AC charging is to install on-board chargers on electric vehicles, and the on-board charger converts the alternating current transmitted by the AC charging piles into direct current to charge electric vehicles. [0003] The electric vehicle is equipped with a low-voltage battery that supplies power to the control system and a high-voltage power battery that supplies power to the drive system. When the electric vehicle is charged through a DC charging pile, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/18
CPCY02T10/70Y02T10/7072Y02T90/12Y02T90/14Y02T90/16
Inventor 廖绍文盛旺陈俊兵何伟陈一军刘小飞
Owner CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
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