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Charging control method for low-voltage storage battery of electric vehicle and electric vehicle

A charging control method and low-voltage storage battery technology, which are applied in the field of vehicles, can solve problems such as low-voltage storage battery loss, and achieve the effect of ensuring service life and reducing the normal operation of vehicles

Inactive Publication Date: 2016-11-09
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is easy to cause the risk of low-voltage battery loss in the case of parking, especially when the vehicle is left for a long time

Method used

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  • Charging control method for low-voltage storage battery of electric vehicle and electric vehicle
  • Charging control method for low-voltage storage battery of electric vehicle and electric vehicle
  • Charging control method for low-voltage storage battery of electric vehicle and electric vehicle

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] The method for controlling the charging of a low-voltage battery of an electric vehicle and the electric vehicle according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0032] figure 1 is a flowchart of a low-voltage storage battery charging control method for an electric vehicle according to an embodiment of the present invention, wherein the electric vehicle includes a high-voltage power supply such as a power battery, a low-voltage storage battery, and...

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Abstract

The invention discloses a charging control method for a low-voltage storage battery of an electric vehicle. The electric vehicle comprises a high-voltage power supply, the low-voltage storage battery and a power supply converter. The power supply converter is connected with the high-voltage power supply and the low-voltage storage battery. The charging control method comprises the following steps that current operating modes of the electric vehicle are detected by a whole vehicle controller of the electric vehicle, wherein the operating modes comprise the driving mode and the parking mode; if the electric vehicle is in the parking mode, the whole vehicle controller obtains electric quantity information of the low-voltage storage battery at preset time intervals after the high-voltage power supply stops high voltage output; and when the electric quantity of the low-voltage storage battery is lower than a charging threshold value lower limit, the whole vehicle controller controls start-up of the power supply converter to convert high voltage electricity into low voltage electricity in order to charge the low-voltage storage battery. The charging control method for the low-voltage storage battery can lower a power-lack risk which occurs in the low-voltage storage battery when the electric vehicle is in the parking mode. The invention further discloses the electric vehicle.

Description

technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to a charging control method for a low-voltage storage battery of an electric vehicle and an electric vehicle. Background technique [0002] Electric vehicles include high-voltage and low-voltage on-board power systems. The high-voltage power system is mainly used to provide the driving power of the vehicle, while the low-voltage power system is mainly used to provide power output for the low-voltage electrical appliances of the vehicle. At present, the voltage level of the low-voltage power supply system is usually 12V or 24V, and the most commonly used low-voltage power supply system is a lead-acid battery. [0003] During normal driving of the vehicle, the on-board power conversion module such as a power converter is usually activated to output low voltage. The output low voltage supplies power to the low-voltage system of the vehicle on the one hand, and charges the...

Claims

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Application Information

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IPC IPC(8): B60L11/18
CPCB60L58/20Y02T10/70
Inventor 曹敏伟张凯马博吴杰伟
Owner BEIJING ELECTRIC VEHICLE
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